ERJ-S03F4023V Equivalent & Substitute Parts

Part Overview

The ERJ-S03F4023V is a 402 kOhms ±1% 0.1W thick film chip resistor in 0603 (1608 Metric) package manufactured by Panasonic Electronic Components. This part features anti-sulfur coating and automotive AEC-Q200 qualification, designed for applications requiring high reliability in harsh environments. The part is currently active in production with 839 units in stock.

Substitute parts are identified when equivalent electrical and mechanical specifications are required due to supply constraints, design flexibility, or manufacturing preferences while maintaining functional compatibility.

Key Parameters

Parameter	Value
Resistance	402 kOhms
Tolerance	±1%
Power Rating	0.1W (1/10W)
Package / Case	0603 (1608 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Number of Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the ERJ-S03F4023V are qualified based on the following criteria:

Electrical Parameters (Must Match):

Resistance value: 402 kOhms
Tolerance: ±1%
Power rating: 0.1W (1/10W)
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match):

Package / Case: 0603 (1608 Metric)
Number of terminations: 2
Moisture Sensitivity Level: 1 (Unlimited)

Compliance Parameters:

RoHS Status: ROHS3 Compliant (preferred)
REACH Status: REACH Unaffected (preferred)

All identified substitute parts meet these core electrical and mechanical requirements. Variations in physical dimensions (length, width, height) within the 0603 package specification and differences in specific features (anti-sulfur coating, moisture resistance) do not affect functional substitutability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op. Temp Range	RoHS Status	Inventory (Pcs)
ERJ-S03F4023V	Panasonic Electronic Components	402 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	839
ERJ-3EKF4023V	Panasonic Electronic Components	402 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	84622
AC0603FR-07402KL	YAGEO	402 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	14782
CR0603-FX-4023ELF	Bourns Inc.	402 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	29781
CRCW0603402KFKEA	Vishay Dale	402 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	28213
CRCW0603402KFKTA	Vishay Dale	402 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	RoHS non-compliant	5914
RC0603FR-07402KL	YAGEO	402 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	1662746
RMCF0603FT402K	Stackpole Electronics Inc	402 kOhms	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3 Compliant	46305

Engineering Selection Recommendations

Primary Substitutes (ROHS3 Compliant, REACH Unaffected):

ERJ-3EKF4023V, AC0603FR-07402KL, CR0603-FX-4023ELF, CRCW0603402KFKEA, RC0603FR-07402KL, and RMCF0603FT402K are functionally equivalent to the ERJ-S03F4023V. All meet the specified electrical parameters, package requirements, and environmental compliance standards. Selection among these parts may be based on availability, supply chain preferences, or specific feature requirements (anti-sulfur coating, moisture resistance, automotive qualification).

Secondary Substitute (Compliance Consideration):

CRCW0603402KFKTA is electrically and mechanically equivalent but carries RoHS non-compliant and REACH Affected status. This part is suitable only for applications where legacy compliance status is acceptable or required.

Availability Consideration:

RC0603FR-07402KL offers the highest inventory level (1,662,746 units) among all substitutes, providing supply security for high-volume applications.

Frequently Asked Questions (FAQ)

Q: Can ERJ-3EKF4023V replace ERJ-S03F4023V directly?

A: Yes. Both parts share identical electrical specifications (402 kOhms ±1%, 0.1W), temperature characteristics (±100ppm/°C, -55°C ~ 155°C), and 0603 package footprint. The primary difference is the series designation (ERJ-3EK vs. ERJ-S03) and anti-sulfur coating on the ERJ-S03F4023V. Functional substitution is valid.

Q: What is the difference between YAGEO AC0603FR-07402KL and RC0603FR-07402KL?

A: Both are YAGEO 402 kOhms ±1% 0603 resistors with identical electrical and mechanical specifications. The primary difference is packaging: AC0603FR-07402KL is supplied in Tape & Reel (TR), while RC0603FR-07402KL is supplied in Cut Tape (CT) & Digi-Reel. Electrical performance is equivalent.

Q: Is CRCW0603402KFKTA suitable for new designs?

A: CRCW0603402KFKTA meets all electrical and mechanical requirements but is RoHS non-compliant and REACH Affected. Use is restricted to applications where legacy compliance status is explicitly permitted or required by design specifications.

Q: Do all substitutes support automotive applications?

A: ERJ-3EKF4023V, AC0603FR-07402KL, CRCW0603402KFKEA, CRCW0603402KFKTA, and RMCF0603FT402K carry AEC-Q200 automotive qualification. CR0603-FX-4023ELF and RC0603FR-07402KL do not list AEC-Q200 rating. For automotive applications requiring AEC-Q200 certification, select from the qualified parts.

Q: Are there dimensional differences between substitutes?

A: All parts conform to the 0603 (1608 Metric) package specification. Minor variations in length, width, and height exist within package tolerance. Maximum seated heights range from 0.020" to 0.022" (0.50mm to 0.55mm). These variations are within standard PCB design tolerances and do not affect footprint compatibility.

Q: What is the significance of anti-sulfur coating on ERJ-S03F4023V?

A: Anti-sulfur coating protects against sulfur-induced corrosion in high-sulfur environments. This feature is specific to the ERJ-S03F4023V and ERJ-3EKF4023V series. Other substitutes do not specify this coating but offer moisture resistance as an alternative protective feature.

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