ERJ-S08F4991V Equivalent & Substitute Parts

Part Overview

The ERJ-S08F4991V is a 4.99 kOhm ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Panasonic Electronic Components. This part features anti-sulfur coating and automotive AEC-Q200 qualification, making it suitable for automotive and harsh environment applications. The part is currently active in production with 710 units in stock.

Substitute parts become necessary when the primary part reaches end-of-life status, inventory constraints occur, or design requirements necessitate alternative qualified sources. The ERJ-S08F4991V can be replaced with functionally equivalent resistors that maintain identical electrical specifications and package compatibility.

Key Parameters

Parameter	Value
Resistance	4.99 kOhms
Tolerance	±1%
Power Rating	0.25W (1/4W)
Package / Case	1206 (3216 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Automotive Rating	AEC-Q200
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S08F4991V is determined by strict equivalence across the following parameters:

Resistance value: 4.99 kOhms (exact match required)
Tolerance: ±1% (exact match required)
Power rating: 0.25W minimum (equal or higher acceptable)
Package: 1206 (3216 Metric) (exact match required)
Composition: Thick Film (exact match required)
Temperature coefficient: ±100ppm/°C (exact match required)
Operating temperature range: -55°C ~ 155°C minimum (equal or wider acceptable)
RoHS compliance: ROHS3 Compliant (required for new designs)
Moisture sensitivity: MSL 1 (required)

All substitute parts listed below meet these criteria. Parts with automotive AEC-Q200 qualification provide direct functional equivalence for automotive applications. Parts without AEC-Q200 rating remain electrically equivalent but lack automotive qualification.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	AEC-Q200	RoHS	Product Status	Inventory
ERJ-S08F4991V	Panasonic	4.99 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Yes	ROHS3	Active	710
ERJ-8ENF4991V	Panasonic	4.99 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Yes	ROHS3	Not For New Designs	16061
CRG1206F4K99	TE Connectivity	4.99 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	No	ROHS3	Active	826
AC1206FR-074K99L	YAGEO	4.99 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Yes	ROHS3	Active	8929
CR1206-FX-4991ELF	Bourns Inc.	4.99 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	No	ROHS3	Active	79753
CRCW12064K99FKEA	Vishay Dale	4.99 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Yes	ROHS3	Active	68193
CRCW12064K99FKEAHP	Vishay Dale	4.99 kΩ	±1%	0.75	1206	±100ppm/°C	-55~155°C	Yes	ROHS3	Active	48506
CRCW12064K99FKTA	Vishay Dale	4.99 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Yes	RoHS non-compliant	Active	27911
RC1206FR-074K99L	YAGEO	4.99 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	No	ROHS3	Active	62095
RMCF1206FG4K99	Stackpole Electronics	4.99 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Yes	ROHS3	Active	14948
RMCF1206FT4K99	Stackpole Electronics	4.99 kΩ	±1%	0.25	1206	±100ppm/°C	-55~155°C	Yes	ROHS3	Active	92992

Engineering Selection Recommendations

For new designs and production applications, select from parts with Active product status and ROHS3 compliance. The following parts provide direct equivalence with automotive qualification:

AC1206FR-074K99L (YAGEO), CRCW12064K99FKEA (Vishay Dale), RMCF1206FG4K99 (Stackpole Electronics), and RMCF1206FT4K99 (Stackpole Electronics) are all active, AEC-Q200 qualified, and ROHS3 compliant alternatives to the ERJ-S08F4991V.

For applications requiring higher power dissipation within the same package footprint, CRCW12064K99FKEAHP (Vishay Dale) provides 0.75W rating while maintaining all other electrical and compliance specifications.

The ERJ-8ENF4991V (Panasonic) is electrically equivalent but marked "Not For New Designs," making it unsuitable for new product development despite high inventory availability.

CRCW12064K99FKTA (Vishay Dale) is not ROHS3 compliant and should not be used in applications requiring RoHS compliance.

CRG1206F4K99 (TE Connectivity), CR1206-FX-4991ELF (Bourns Inc.), and RC1206FR-074K99L (YAGEO) lack AEC-Q200 automotive qualification and are suitable only for non-automotive applications.

Frequently Asked Questions (FAQ)

Q: Can ERJ-8ENF4991V replace ERJ-S08F4991V in new designs?

A: No. The ERJ-8ENF4991V is marked "Not For New Designs" by the manufacturer. Although electrically equivalent, it should not be used in new product development. Select from active status alternatives instead.

Q: What is the difference between CRCW12064K99FKEA and CRCW12064K99FKEAHP?

A: Both parts are identical except for power rating. CRCW12064K99FKEA is rated 0.25W, while CRCW12064K99FKEAHP is rated 0.75W. The higher power rating part can dissipate more heat in the same 1206 package footprint. Use the higher power rating only if thermal requirements demand it.

Q: Are all substitute parts suitable for automotive applications?

A: No. Only parts with AEC-Q200 qualification are suitable for automotive use. These include: AC1206FR-074K99L, CRCW12064K99FKEA, CRCW12064K99FKEAHP, CRCW12064K99FKTA, RMCF1206FG4K99, and RMCF1206FT4K99. Parts without AEC-Q200 rating (CRG1206F4K99, CR1206-FX-4991ELF, RC1206FR-074K99L) are for general industrial use only.

Q: Does CRCW12064K99FKTA meet RoHS requirements?

A: No. CRCW12064K99FKTA is RoHS non-compliant and REACH affected. It should not be used in applications requiring RoHS3 compliance. Select CRCW12064K99FKEA or CRCW12064K99FKEAHP instead.

Q: Can I use a non-AEC-Q200 part in an automotive circuit?

A: No. Automotive applications require AEC-Q200 qualification. Using non-qualified parts violates automotive design standards and may cause field failures. Select only AEC-Q200 qualified alternatives for automotive designs.

Q: Are there physical size differences between substitute parts?

A: All parts use the 1206 (3216 Metric) package, but individual manufacturers specify slightly different maximum dimensions. Typical variations range from 0.122" to 0.126" length and 0.061" to 0.063" width, with heights from 0.024" to 0.030". These variations are within standard PCB design tolerances and do not affect interchangeability.

Q: Which substitute has the highest inventory availability?

A: CR1206-FX-4991ELF (Bourns Inc.) has 79,753 units in stock, followed by RMCF1206FT4K99 (Stackpole Electronics) with 92,992 units. However, inventory levels should not override compliance and qualification requirements for your application.

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