Panasonic Era-1a Metal Film Chip Resistors Instruction Manual

ERA-1A Metal Film Chip Resistors

Product Information

The Metal Film (Thin Film) Chip Resistors, High Reliability Type
are resistors that offer high reliability, high accuracy, and high
performance. They are stable at high temperature and humidity
conditions. These resistors have low resistance tolerance and
Temperature Coefficient of Resistance, ensuring high accuracy. They
also have low current noise and excellent linearity.

The resistors comply with the reference standards IEC 60115-8,
JIS C 5201-8, JEITA RC-2133C. They are AEC-Q200 compliant (except
ERA1A) and RoHS compliant.

For packaging methods, land pattern, soldering conditions, and
safety precautions, please refer to the data files.

Product Usage Instructions

The Metal Film (Thin Film) Chip Resistors can be used in various
electronic applications. Follow the instructions below for proper
usage:

1. Part Number Explanation

The part number consists of several codes that denote different
specifications:

• E: Indicates the product is a thin film chip
  resistor.
• RA: Denotes the series of the resistor (ERA1A,
  ERA2A, ERA3A, ERA6A, ERA8A).
• Size and Power Rating: The codes 1A, 2A, 3A,
  6A, 8A correspond to different sizes and power ratings of the
  resistors.
• Temp. Coefficient (T.C.R.): The codes R, P, E,
  H represent different temperature coefficients.
• Resistance Tolerance: The codes B, C, D
  indicate different resistance tolerances.
• Resistance Value: The resistance value is
  represented by three or four figures.
• Packaging Method: The code denotes the
  packaging method of the resistor.

2. Resistance Ratings

The resistors have different power ratings and ratings for
limiting element voltage and maximum overload voltage. Refer to the
table below for the specific ratings:

3. Resistance Range

The resistance range of the resistors depends on the specific
part number and is indicated by the resistance value code. The E24
series uses three figures, while the E96 series uses four figures
to represent the resistance value.

4. Packaging Methods

The resistors are available in different packaging methods. The
part number code indicates the packaging method. Refer to the user
manual or data files for details on each packaging method.

Note: Design and specifications are subject to change without
notice. Please contact the factory for the most up-to-date
technical specifications before purchase and use. If you have any
safety concerns regarding the product, please contact us
immediately.

Metal Film (Thin Film) Chip Resistors, High Reliability Type
ERA A type ERA 1A, 2A, 3A, 6A, 8A series

Features

High reliability

: Stable at high temperature and humidity

(85 85 %RH rated load, Category temperature range : ­55 to +155 )

High accuracy

: Low resistance tolerance and Temperature Coefficient of Resistance

High performance

: Low current noise, excellent linearity

Reference standard : IEC 60115-8, JIS C 5201-8, JEITA RC-2133C

AEC-Q200 compliant (except ERA1A)

RoHS compliant

As for packaging methods, land pattern, soldering conditions and safety precautions, please see data files.

Explanation of part numbers

E24 series

1

2

3

4

5

6

7

E RA 3 AEB

8

9

10

11

102V

Product code
Thin film chip resistors

Size, Power rating

Code inch size Power rating

1A 0201 0.05 W

2A 0402 0.063 W

3A 0603

0.1 W

6A 0805 0.125 W

8A 1206 0.25 W

Temp. coefficient

Code

T.C.R.

R

±10×10-6/K

P

±15×10-6/K

E

±25×10-6/K

H

±50×10-6/K

K ±100×10-6/K

Resistance tolerance

Code Tolerance

W ±0.05 %

B

±0.1 %

C

±0.25 %

D

±0.5 %

Resistance value
Consist of three figures for E24 series resistance value. The first two digits are significant figures of resistance and the third one denotes number of zeros following. (example) 102 : 1 k

Code

Packaging methods

Packaging

Part No.

C

Pressed carrier taping 2 mm pitch, 15,000 pcs

ERA1A

X

Punched carrier taping 2 mm pitch, 10,000 pcs

ERA2A

ERA3A

V

Punched carrier taping 4 mm pitch, 5,000 pcs

ERA6A

ERA8A

E96 series and other Resistance values

1

2

3

4

5

6

7

8

9

10

11

12

ERA3 AEB 1 0 5 1 V

Product Code
Thin film chip resistors

Size, Power rating

Code inch size Power rating

1A 0201 0.05 W

2A 0402 0.063 W

3A 0603

0.1 W

6A 0805 0.125 W

8A 1206 0.25 W

Temp. coefficient

Code

T.C.R.

R

±10×10-6/K

P

±15×10-6/K

E

±25×10-6/K

H

±50×10-6/K

K ±100×10-6/K

Resistance tolerance

Code Tolerance

W ±0.05 %

B

±0.1 %

C

±0.25 %

D

±0.5 %

Resistance value
Consist of four figures for E96 series resistance value. The first three digits are significant figures of resistance and the fourth one denotes number of zeros following. (example) 1051 : 1.05 k

Code

Packaging methods

Packaging

Part No.

C

Pressed carrier taping 2 mm pitch, 15,000 pcs

ERA1A

X

Punched carrier taping 2 mm pitch, 10,000 pcs

ERA2A

ERA3A

V

Punched carrier taping 4 mm pitch, 5,000 pcs

ERA6A

ERA8A

Note : Duplicated resistance values as E24 series part umbers shall follow E24 part numbers. (apply three digit resistance value)
Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately.

1-Jul-21

Metal Film (Thin Film) Chip Resistors, High Reliability Type

Ratings

Part No. (inch size)

Power rating*1
(85 ) (W)

ERA1A (0201)

0.05

ERA2A (0402)

0.063

ERA3A (0603)

0.1

ERA6A (0805)

0.125

ERA8A (1206)

0.25

Limiting element voltage*2
(V) 25
50
75
100
150

Maximum overload voltage*3
(V) 50
100
150
200
300

Part No. Resistance

(detail)

tolerance (%)

ERA1AEB ERA1AEC ERA1ARC ERA1ARB ERA1ARW ERA2AKD ERA2AED ERA2AEC ERA2AEB ERA2APC ERA2APB ERA2ARC ERA2ARB ERA3AHD ERA3AED ERA3AEC ERA3AEB ERA3APC ERA3APB ERA3ARC ERA3ARB ERA3ARW ERA6AHD ERA6AED ERA6AEC ERA6AEB ERA6APC ERA6APB ERA6ARC ERA6ARB ERA6ARW ERA8AHD ERA8AED ERA8AEC ERA8AEB ERA8APC ERA8APB ERA8ARC ERA8ARB ERA8ARW

±0.1 ±0.25 ±0.25 ±0.1 ±0.05 ±0.5 ±0.5 ±0.25 ±0.1 ±0.25 ±0.1 ±0.25 ±0.1 ±0.5 ±0.5 ±0.25 ±0.1 ±0.25 ±0.1 ±0.25 ±0.1 ±0.05 ±0.5 ±0.5 ±0.25 ±0.1 ±0.25 ±0.1 ±0.25 ±0.1 ±0.05 ±0.5 ±0.5 ±0.25 ±0.1 ±0.25 ±0.1 ±0.25 ±0.1 ±0.05

T.C.R.
(×10-6/K)
±25 ±10 ±100 ±25 ±15 ±10 ±50 ±25 ±15 ±10 ±50 ±25 ±15 ±10 ±50 ±25 ±15 ±10

Resistance range*4 *5
()

Category temperature
range ()

AEC-Q200 Grade

100 to 10 k (E24,E96)

100 to 10 k (E24,E96)

1 k to 10 k 10 to 46.4

(E24,E96) (E24,E96)

47 to 100 k (E24,E96) 200 to 47 k (E24,E96)

Grade 1

200 to 47 k 10 to 46.4

(E24,E96) (E24,E96)

47 to 330 k (E24,E96)

470 to 100 k (E24,E96)

­55 to +155 1 k to 100 k (E24,E96)

10 to 46.4

(E24,E96)

47 to 1 M

(E24,E96)

470 to 100 k (E24,E96)

Grade 0

1 k to 100 k (E24,E96)

10 to 46.4

(E24,E96)

47 to 1 M

(E24,E96)

470 to 100 k (E24,E96)

1 k to 100 k (E24,E96)

*1: Use it on the condition that the case temperature is below the upper category temperature. *2: Rated Continuous Working Voltage (RCWV) shall be determined from RCWV=Power Rating × Resistance Values,
or Limiting Element Voltage listed above, whichever less. *3: Overload Test Voltage (OTV) shall be determined from OTV=Specified Magnification (2.5) × RCWV or Maximum Overload
Voltage listed above, whichever less. *4: E192 series resistance values are also available. Please contact us for details. *5: Duplicated resistance values between E96, E192 and E24 series shall follow E24 Part Numbers.
(apply three digit resistance value)

Power derating curve

-55 100

85

For resistors operated in ambient temperatures
80
above 85 , power rating shall be derated in

accordance with the figure on the right.

60

Rated load (%)

40

20 155
0 -60 -40 -20 0 20 40 60 80 100 120 140 160 180
Ambient temperature ()

Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately.

1-Jul-21

Construction

Metal Film (Thin Film) Chip Resistors, High Reliability Type

Protective coating

Electrode (Inner)

Alumina substrate High reliability metal film

Electrode (Middle) Electrode (Outer)

*0201/0402 size or E96 series do not have value markings.

Dimensions (not to scale)
W

L a

Part No.
ERA1A ERA2A ERA3A ERA6A ERA8A

L 0.60±0.03 1.00±0.10 1.60±0.20 2.00±0.20 3.20±0.20

T b
W 0.30±0.03 0.50+0.10/-0.05 0.80±0.20 1.25±0.10 1.60+0.05/-0.15

Dimensions a
0.15±0.05 0.15±0.10 0.30±0.20 0.40±0.25 0.50±0.25

b 0.15±0.05 0.25±0.10 0.30±0.20 0.40±0.25 0.50±0.25

T 0.23±0.03 0.35±0.05 0.45±0.10 0.50±0.10 0.60±0.10

Unit : mm Mass (Weight)
(Reference) (g/1000 pcs)
0.14 0.6 2 4 8

Performance
Test Item
Resistance
T. C. R.
Overload Resistance to soldering heat Rapid change of temperature High temperature
exposure Damp heat, Steady state
Load life in humidity
Endurance at 85

Performance requirements R Within specified
tolerance Within specified
T. C. R. R<47 : ±0.5 % R47 : ±0.1 % R<47 : ±0.5 % R47 : ±0.1 % R<47 : ±0.5 % R47 : ±0.1 % R<47 : ±0.5 % R47 : ±0.1 % R<47 : ±0.5 % R47 : ±0.1 %
R<47 : ±0.5 % R47 : ±0.1 %
R<47 : ±0.5 % R47 : ±0.1 %

Test conditions
20
+25 / +125
Rated voltage x 2.5, 5 s
270 , 10 s ERA1A, 2A : ­55 (30 min.) / +125 (30 min.),1000 cycles ERA3A, 6A, 8A : ­55 (30 min.) / +155 (30 min.),1000 cycles
+155 , 1000 h
85 , 85 %RH, 1000 h 85 , 85%RH, 10% rated power, 1.5 h ON / 0.5 h OFF cycle, 1000 h Max. test voltage : ERA2A : 15.8 V, ERA3A : 23.7 V, ERA6A : 31.6 V,
ERA8A : 47.4 V 85, Rated voltage, 1.5 h ON / 0.5 h OFF cycle, 1000 h

Design and specifications are each subject to change without notice. Ask factory for the current technical specifications before purchase and/or use. Should a safety concern arise regarding this product, please be sure to contact us immediately.

1-Jul-21

Guidelines and precautions regarding the technical information and use of our products
described in this online catalog.
If you want to use our products described in this online catalog for applications requiring special qualities or reliability, or for applications where the failure or malfunction of the products may directly jeopardize human life or potentially cause personal injury (e.g. aircraft and aerospace equipment, traffic and transportation equipment, combustion equipment, medical equipment, accident prevention, anti-crime equipment, and/or safety equipment), it is necessary to verify whether the specifications of our products fit to such applications. Please ensure that you will ask and check with our inquiry desk as to whether the specifications of our products fit to such applications use before you use our products.
The quality and performance of our products as described in this online catalog only apply to our products when used in isolation. Therefore, please ensure you evaluate and verify our products under the specific circumstances in which our products are assembled in your own products and in which our products will actually be used.
Please ensure the safety by means of protection circuit, redundant circuit etc. in your system design in order to prevent the occurrence of life crisis and other serious damages due to the failure of our products.
The products and product specifications described in this online catalog are subject to change for improvement without prior notice. Therefore, please be sure to request and confirm the latest product specifications which explain the specifications of our products in detail, before you finalize the design of your applications, purchase, or use our products.
The technical information in this online catalog provides examples of our products’ typical operations and application circuits. We do not guarantee the non-infringement of third party’s intellectual property rights and we do not grant any license, right, or interest in our intellectual property.
If any of our products, product specifications and/or technical information in this online catalog is to be exported or provided to non-residents, the laws and regulations of the exporting country, especially with regard to security and export control, shall be observed.
<Regarding the Certificate of Compliance with the EU RoHS Directive/REACH Regulations>
The switchover date for compliance with the RoHS Directive/REACH Regulations varies depending on the part number or series of our products.
When you use the inventory of our products for which it is unclear whether those products are compliant with the RoHS Directive/REACH Regulation, please select “Sales Inquiry” in the website inquiry form and contact us.
Please note that we do not owe any liability and responsibility if our products are used beyond the description of this catalog or without complying with precautions in this catalog.
25-Nov-22

Fixed Resistors

Application Guidelines (Fixed Resistors)

Safety precautions

· When using our products, no matter what sort of equipment they might be used for, be sure to make a written agreement on the specifications with us in advance. The design and specifications in this catalog are subject to change without prior notice.
· Do not use the products beyond the specifications described in this catalog. · This catalog explains the quality and performance of the products as individual components. Before use, check
and evaluate their operations when installed in your products under the actual conditions for use. · Install the following systems for a failsafe design to ensure safety if these products are to be used in equipment
where a defect in these products may cause the loss of human life or other significant damage, such as damage to vehicles (automobile, train, vessel), traffic lights, medical equipment, aerospace equipment, electric heating appliances, combustion/gas equipment, rotating equipment, and disaster/crime prevention equipment. Systems equipped with a protection circuit and a protection device. Systems equipped with a redundant circuit or other system to prevent an unsafe status in the event of a single fault. Systems equipped with an arresting the spread of fire or preventing glitch.
Precautions for use

· These products are designed and manufactured for general and standard use in general elec tron ic equipment.

(e.g. AV equipment, home electric appliances, office equipment, information and communication equipment)

For applications in which special quality and reliability are required, or if the failure or malfunction of the

products may directly jeopardize life or cause threat of personal injury (such as for aircraft and aerospace

equipment, traffic and transport equipment, combustion equipment, medical equipment, accident prevention

and anti-theft devices, and safety equipment), please be sure to consult with our sales representative in

advance and to exchange product specifications which conform to such applications.

· These products are not intended for use in the following special conditions. Before using the products, carefully

check the effects on their quality and performance, and determine whether or not they can be used.

1. In liquid, such as water, oil, chemicals, or organic solvent.

2. In direct sunlight, outdoors, or in dust.

3. In salty air or air with a high concentration of corrosive gas, such as Cl2, H2S, NH3, SO2, or NOX .

4. Electric Static Discharge (ESD) Environment.

These components are sensitive to static electricity and can be damaged under static shock (ESD).

Please take measures to avoid any of these environments.

Smaller components are more sensitive to ESD environment.

5. Electromagnetic and Radioactive Environment.

Avoid any environment where strong electromagnetic waves and radiation exist.

6. In an environment where these products cause dew condensation.

7. Sealing or coating of these products or a printed circuit board on which these products are mounted, with

resin or other materials.

· These products generate Joule heat when energized. Carefully position these products so that their heat will

not affect the other components.

· Carefully position these products so that their temperatures will not exceed the category temperature range

due to the effects of neighboring heat-generating components. Do not mount or place heat-generating

components or inflammables, such as vinyl-coated wires, near these products.

· Note that non-cleaning solder, halogen-based highly active flux, or water-soluble flux may deteriorate the

performance or reliability of the products.

· Carefully select a flux cleaning agent for use after soldering. An unsuitable agent may deteriorate the

performance or reliability. In particular, when using water or a water-soluble cleaning agent, be careful not to

leave water residues. Otherwise, the insulation performance may be deteriorated.

· Do not apply flux to these products after soldering. The activity of flux may be a cause of failures in these

products.

· Refer to the recommended soldering conditions and set the soldering condition. High peak temperature or

long heating time may impair the performance or the reliability of these products.

· Recommended soldering condition is for the guideline for ensuring the basic characteristics of the products,

not for the stable soldering conditions. Conditions for proper soldering should be set up according to individual

conditions.

· Do not reuse any products after removal from mounting boards.

· Do not drop these products. If these products are dropped, do not use them. Such products may have

received mechanical or electrical damage.

· If any doubt or concern to the safety on these products arise, make sure to inform us immediately and

conduct technical examinations at your side.

01-Oct-19

Fixed Resistors
Precautions for storage
The performance of these products, including the solderability, is guaranteed for a year from the date of arrival at your company, provided that they remain packed as they were when delivered and stored at a temperature of 5 °C to 35 °C and a relative humidity of 45 % to 85 %. Even within the above guarantee periods, do not store these products in the following conditions. Otherwise, their electrical performance and/or solderability may be deteriorated, and the packaging materials (e.g. taping materials) may be deformed or deteriorated, resulting in mounting failures. 1. In salty air or in air with a high concentration of corrosive gas, such as Cl2, H2S, NH3, SO2, or NOX . 2. In direct sunlight.
Package markings Package markings include the product number, quantity, and country of origin. In principle, the country of origin should be indicated in English.
AEC-Q200 Compliant
The products are tested based on all or part of the test conditions and methods defined in AEC-Q200. Please consult with Panasonic for the details of the product specification and specific evaluation test results, etc., and please review and approve Panasonic’s product specification before ordering.
01-Oct-19

Surface Mount Resistors
Application Guidelines (Surface Mount Resistors)
The following are precautions for individual products. Please also refer to the common precautions for Fixed Resistors in this catalog.
1. Take measures against mechanical stress during and after mounting of Surface Mount Resistors (hereafter called the resistors) so as not to damage their electrodes and protective coatings. Be careful not to misplace the resistors on the land patterns. Otherwise, solder bridging may occur.
2. Keep the rated power and ambient temperature within the specified derating curve. Some circuit boards, wiring patterns, temperatures of heat generated by adjacent components, or ambient temper a tures can become factors in the rise of the temperature of the resistors, regardless of the level of power applied. Therefore, check the conditions before use and op timize them so as not to damage the boards and peripheral components. Make sure to contact us before using the resistors under special conditions.
3. If a transient load (heavy load in a short time) like a pulse is expected to be applied, check and evaluate the operations of the resistors when installed in your products before use. Never exceed the rated power. Otherwise, the performance and/or reliability of the resistors may be impaired.
4. Transient voltage If there is a possibility that the transient phenomenon (significantly high voltage applied in a short time) may occur or that a high voltage pulse may be applied, make sure to evaluate and check the characteristics of resistors mounted on your product rather than only depending on the calculated power limit or steady-state conditions.
5. If the resistors are to be used in high frequency circuits, carefully check the operation before use. Such circuits change the electrical characteristics of the resistors.
6.Before using halogen-based or other high-activity flux, check the possible effects of the flux residues on the performance and reliability of the resistors.
7. When soldering with a soldering iron, never touch the resistors’bodies with the tip of the soldering iron. When using a soldering iron with a high temperature tip, finish soldering as quickly as possible (within three seconds at 350 °C max.).
8. Mounting of the resistors with excessive or insufficient wetting amount of solder may affect the connection reliability or the performance of the resistors. Carefully check the effects and apply a proper amount of solder for use.
9. When the resistors’ protective coatings are chipped, flawed, or removed, the characteristics of the resistors may be impaired. Take special care not to apply mechanical shock during automatic mounting or cause damage during handling of the boards with the resistors mounted.
10. Do not apply shock to the resistors or pinch them with a hard tool (e.g. pliers and tweezers). Otherwise, the resistors’ protective coatings and bodies may be chipped, affecting their performance.
11. Avoid excessive bending of printed circuit boards in order to protect the resistors from abnormal stress. 12. Do not immerse the resistors in solvent for a long time.
Before using solvent, carefully check the effects of immersion. 13. Do not apply excessive tension to the terminals.
01-Oct-19