ERJ-S06F21R5V Equivalent & Substitute Parts

Part Overview

The ERJ-S06F21R5V is a 21.5 Ohm ±1% 1/8W thick film chip resistor in 0805 (2012 Metric) package manufactured by Panasonic Electronic Components. This part is rated for automotive applications under AEC-Q200 and features anti-sulfur construction. The part is active and widely available with 719 units in current stock. Equivalent and substitute parts are identified when identical electrical specifications, mechanical dimensions, and compliance ratings are maintained across different manufacturers.

Key Parameters

Parameter	Value
Resistance	21.5 Ohms
Tolerance	±1%
Power Rating	0.125W (1/8W)
Package / Case	0805 (2012 Metric)
Composition	Thick Film
Temperature Coefficient	±100ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Ratings	AEC-Q200 (Automotive)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the ERJ-S06F21R5V is determined by strict equivalence across the following parameters:

Resistance value: 21.5 Ohms
Tolerance: ±1%
Power rating: 0.125W (1/8W)
Package: 0805 (2012 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C
RoHS compliance: ROHS3
Moisture sensitivity: MSL 1

All identified substitute parts meet these core electrical and mechanical requirements. Variations in physical height and specific feature sets (such as anti-sulfur vs. moisture-resistant construction) do not affect functional substitutability when these parameters are matched.

Parameter Comparison

Parameter	ERJ-S06F21R5V	ERJ-6ENF21R5V	CRCW080521R5FKEA	RC0805FR-0721R5L	RMCF0805FT21R5
Manufacturer	Panasonic	Panasonic	Vishay Dale	YAGEO	Stackpole Electronics
Resistance	21.5 Ohms	21.5 Ohms	21.5 Ohms	21.5 Ohms	21.5 Ohms
Tolerance	±1%	±1%	±1%	±1%	±1%
Power Rating	0.125W	0.125W	0.125W	0.125W	0.125W
Package	0805	0805	0805	0805	0805
Composition	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C	±100ppm/°C
Operating Temperature	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C	-55°C ~ 155°C
RoHS Status	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3
MSL Rating	1	1	1	1	1
Height - Seated (Max)	0.028" (0.70mm)	0.028" (0.70mm)	0.020" (0.50mm)	0.024" (0.60mm)	0.026" (0.65mm)
Packaging	Tape & Reel	Tape & Reel	Tape & Reel	Tape & Reel	Tape & Reel

Engineering Selection Recommendations

All four substitute parts are functionally equivalent to the ERJ-S06F21R5V based on electrical specifications and compliance certifications. Selection among these alternatives should be based on:

Automotive Applications: ERJ-6ENF21R5V, CRCW080521R5FKEA, and RMCF0805FT21R5 carry explicit AEC-Q200 automotive ratings. RC0805FR-0721R5L does not list AEC-Q200 certification and is suitable for non-automotive applications.

Feature Requirements: ERJ-S06F21R5V and RMCF0805FT21R5 are specified for automotive use. ERJ-6ENF21R5V is also automotive-rated. RC0805FR-0721R5L is specified as moisture-resistant without automotive qualification.

Availability: ERJ-6ENF21R5V has the highest inventory (68,018 units), followed by CRCW080521R5FKEA (20,866 units), RMCF0805FT21R5 (3,300 units), and RC0805FR-0721R5L (1,639 units).

Physical Dimensions: All parts fit the 0805 package footprint. Height variations range from 0.020" to 0.028", which are within typical PCB assembly tolerances for this package class.

Frequently Asked Questions (FAQ)

Q: Can ERJ-6ENF21R5V replace ERJ-S06F21R5V directly? A: Yes. Both parts are manufactured by Panasonic, share identical electrical specifications (21.5 Ohms ±1%, 0.125W), operate across -55°C to 155°C, and carry AEC-Q200 automotive certification. The primary difference is the series designation (ERJ-6EN vs. ERJ-S06) and feature set (standard automotive vs. anti-sulfur construction).

Q: Is CRCW080521R5FKEA suitable for automotive applications? A: Yes. CRCW080521R5FKEA is manufactured by Vishay Dale and carries AEC-Q200 automotive qualification. It meets all electrical and mechanical requirements for automotive circuit applications.

Q: What is the significance of the height difference between substitute parts? A: Height variations (0.020" to 0.028") are within standard tolerances for 0805 package components and do not affect PCB assembly compatibility. All parts are designed for standard pick-and-place equipment and reflow soldering processes.

Q: Can RC0805FR-0721R5L be used in automotive circuits? A: RC0805FR-0721R5L does not carry AEC-Q200 automotive certification. It is suitable for industrial and consumer applications where automotive qualification is not required. For automotive applications, use ERJ-6ENF21R5V, CRCW080521R5FKEA, or RMCF0805FT21R5.

Q: Are all substitute parts RoHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity ratings, matching the original ERJ-S06F21R5V specification.

Q: What does the ±100ppm/°C temperature coefficient mean for circuit performance? A: The temperature coefficient specifies resistance change per degree Celsius. At ±100ppm/°C, a 21.5 Ohm resistor will change by approximately 0.00215 Ohms per degree Celsius across the -55°C to 155°C operating range. All substitute parts share this specification.

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