RC3216F37R4CS 37.4 Ohm 1% 1/4W 1206 Chip Resistor Equivalent & Substitute Parts

Part Overview

The RC3216F37R4CS is a 37.4 Ohm ±1% 0.25W thick film chip resistor manufactured by Samsung Electro-Mechanics in 1206 (3216 Metric) package format. This component is classified as Active product status with moisture resistant characteristics and ROHS3 compliance. The part operates across -55°C to 155°C temperature range with ±100ppm/°C temperature coefficient. Equivalent and substitute parts are identified based on matching electrical specifications, package dimensions, and environmental ratings to ensure direct functional replacement in circuit applications.

Key Parameters

Parameter	Specification
Resistance Value	37.4 Ohms
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
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the RC3216F37R4CS are classified based on strict electrical and mechanical parameter matching. The primary substitution criteria are:

Critical Parameters for Substitution:

Resistance value: 37.4 Ohms (exact match required)
Tolerance: ±1% (exact match required)
Package format: 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 (exact match required)
RoHS compliance: ROHS3 (exact match required)

Direct Equivalent: RC1206FR-0737R4L (YAGEO) provides identical electrical and mechanical specifications with equivalent moisture resistant characteristics.

Upgrade Substitute: AC1206FR-0737R4L (YAGEO) maintains all core electrical parameters while adding automotive AEC-Q200 qualification, suitable for applications requiring enhanced reliability standards.

Similar Substitutes: CRCW120637R4FKEA and CRCW120637R4FKEAHP (Vishay Dale) and ERJ-8ENF37R4V (Panasonic) provide equivalent electrical performance with automotive AEC-Q200 ratings. CRCW120637R4FKEAHP features increased power rating (0.75W) for applications requiring higher pulse withstanding capability.

Parameter Comparison

Parameter	RC3216F37R4CS (Samsung)	RC1206FR-0737R4L (YAGEO)	AC1206FR-0737R4L (YAGEO)	CRCW120637R4FKEA (Vishay)	CRCW120637R4FKEAHP (Vishay)	ERJ-8ENF37R4V (Panasonic)
Resistance	37.4 Ohms	37.4 Ohms	37.4 Ohms	37.4 Ohms	37.4 Ohms	37.4 Ohms
Tolerance	±1%	±1%	±1%	±1%	±1%	±1%
Power Rating	0.25W	0.25W	0.25W	0.25W	0.75W	0.25W
Package	1206	1206	1206	1206	1206	1206
Composition	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film	Thick Film
Temperature Coefficient	±100ppm/°C	±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	-55°C ~ 155°C
RoHS Status	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3	ROHS3
Automotive Rating	None	None	AEC-Q200	AEC-Q200	AEC-Q200	AEC-Q200
Product Status	Active	Active	Active	Active	Active	Not For New Designs

Engineering Selection Recommendations

For Direct Replacement (Equivalent Functionality): RC1206FR-0737R4L (YAGEO) is the primary direct equivalent, maintaining identical electrical specifications and package dimensions. Both parts are Active status with ROHS3 compliance and unlimited moisture sensitivity rating. This substitute is suitable for applications where automotive qualification is not required.

For Upgraded Applications (Enhanced Reliability): AC1206FR-0737R4L (YAGEO) is recommended for designs requiring automotive-grade components. This part adds AEC-Q200 qualification while preserving all core electrical parameters of the original RC3216F37R4CS. Selection of this upgrade is appropriate for automotive, industrial, or mission-critical applications.

For Automotive and Industrial Applications: CRCW120637R4FKEA (Vishay Dale) provides AEC-Q200 automotive qualification with identical electrical specifications. This part is suitable for automotive circuit designs and industrial environments requiring enhanced reliability standards.

For High-Reliability Pulse Applications: CRCW120637R4FKEAHP (Vishay Dale) features increased power rating (0.75W versus 0.25W) while maintaining 1206 package format and AEC-Q200 qualification. This part is selected when circuit design requires pulse withstanding capability or higher transient energy dissipation within the same package footprint.

Not Recommended for New Designs: ERJ-8ENF37R4V (Panasonic) carries "Not For New Designs" product status. While electrically equivalent with AEC-Q200 rating, this part should not be selected for new product development. Existing designs currently using this part may continue operation, but migration to active-status alternatives is recommended for long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can RC1206FR-0737R4L directly replace RC3216F37R4CS without circuit modification?

A: Yes. RC1206FR-0737R4L is a direct equivalent with identical resistance value (37.4 Ohms), tolerance (±1%), power rating (0.25W), package format (1206), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). No circuit modification is required.

Q: What is the difference between AC1206FR-0737R4L and RC1206FR-0737R4L?

A: Both parts share identical electrical specifications and package format. AC1206FR-0737R4L includes automotive AEC-Q200 qualification, making it suitable for automotive applications. RC1206FR-0737R4L does not carry automotive qualification. Selection depends on application requirements.

Q: Can CRCW120637R4FKEAHP be used as a direct substitute for RC3216F37R4CS?

A: CRCW120637R4FKEAHP is electrically compatible but features increased power rating (0.75W versus 0.25W). The 1206 package dimensions remain identical. This part is suitable for replacement when circuit design permits higher power dissipation or requires pulse withstanding capability. Verify circuit board layout accommodates the slightly different height specification (0.65mm versus 0.66mm).

Q: Why is ERJ-8ENF37R4V marked "Not For New Designs"?

A: ERJ-8ENF37R4V carries "Not For New Designs" status, indicating the manufacturer has discontinued active development and recommends alternative parts for new product development. Existing designs may continue using this part, but new designs should select from active-status alternatives such as RC1206FR-0737R4L, AC1206FR-0737R4L, or CRCW120637R4FKEA.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (RC1206FR-0737R4L, AC1206FR-0737R4L, CRCW120637R4FKEA, CRCW120637R4FKEAHP, and ERJ-8ENF37R4V) are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1), matching the original RC3216F37R4CS specification.

Q: What are the physical dimension differences between substitute parts?

A: Length dimensions vary slightly: RC3216F37R4CS and ERJ-8ENF37R4V measure 0.126" (3.20mm), while RC1206FR-0737R4L, AC1206FR-0737R4L, CRCW120637R4FKEAHP measure 0.122" (3.10mm), and CRCW120637R4FKEA measures 0.126" (3.20mm). Height specifications range from 0.024" to 0.028" (0.60mm to 0.70mm). These variations are within standard 1206 package tolerance and do not affect PCB layout compatibility.

Q: Which substitute part offers the best long-term supply availability?

A: RC1206FR-0737R4L (YAGEO) and AC1206FR-0737R4L (YAGEO) are recommended for long-term availability. Both parts are Active status with high inventory levels (44,342 and 26,071 units respectively). CRCW120637R4FKEA (Vishay Dale) also maintains Active status with substantial inventory (25,009 units).

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