RC1608F37R4CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F37R4CS is a 37.4 Ohms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format with 0.1W power rating. This component is classified as Active product status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). The part is designed for general-purpose applications requiring moisture-resistant thick film construction across industrial and commercial temperature ranges (-55°C to 155°C). Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and application-specific feature options such as automotive AEC-Q200 qualification.

Key Parameters

Parameter	Value
Resistance	37.4 Ohms
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
Terminations	2
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F37R4CS is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Resistance value: 37.4 Ohms
Tolerance: ±1%
Power rating: 0.1W (1/10W)
Package: 0603 (1608 Metric)
Composition: Thick Film
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C
Number of terminations: 2
RoHS3 compliance
MSL rating: 1 (Unlimited)

All identified substitute parts meet these mandatory parameters. Substitute parts are further categorized by feature differentiation:

Direct Equivalent (RC0603FR-0737R4L): Manufactured by YAGEO with identical moisture-resistant thick film construction and matching dimensional specifications.

Automotive-Qualified Substitutes (CRCW060337R4FKEA, ERJ-3EKF37R4V, RMCF0603FT37R4): Manufactured by Vishay Dale, Panasonic Electronic Components, and Stackpole Electronics Inc respectively. These parts include AEC-Q200 automotive qualification in addition to all mandatory parameters, with minor dimensional variations within acceptable tolerances.

Parameter Comparison

Parameter	RC1608F37R4CS (Samsung)	RC0603FR-0737R4L (YAGEO)	CRCW060337R4FKEA (Vishay Dale)	ERJ-3EKF37R4V (Panasonic)	RMCF0603FT37R4 (Stackpole)
Resistance	37.4 Ohms	37.4 Ohms	37.4 Ohms	37.4 Ohms	37.4 Ohms
Tolerance	±1%	±1%	±1%	±1%	±1%
Power Rating	0.1W	0.1W	0.1W	0.1W	0.1W
Package	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)	0603 (1608 Metric)
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
Length	0.063" (1.60mm)	0.063" (1.60mm)	0.061" (1.55mm)	0.063" (1.60mm)	0.061" (1.55mm)
Width	0.031" (0.80mm)	0.031" (0.80mm)	0.033" (0.85mm)	0.031" (0.80mm)	0.031" (0.80mm)
Height (Max)	0.022" (0.55mm)	0.022" (0.55mm)	0.020" (0.50mm)	0.022" (0.55mm)	0.022" (0.55mm)
Automotive Rating	None	None	AEC-Q200	AEC-Q200	AEC-Q200
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

RC0603FR-0737R4L (YAGEO): Direct equivalent substitute with identical electrical and mechanical specifications. Suitable for applications requiring standard industrial-grade thick film resistor performance without automotive qualification requirements. High inventory availability (95,891 pcs) supports supply chain continuity.

CRCW060337R4FKEA (Vishay Dale): Appropriate for automotive and mission-critical applications requiring AEC-Q200 qualification. Dimensional variation (0.020" maximum height vs. 0.022") requires PCB layout verification for high-density assemblies. Inventory level (15,578 pcs) supports production requirements.

ERJ-3EKF37R4V (Panasonic Electronic Components): Automotive-qualified substitute with dimensional specifications matching the primary part. Highest inventory availability (75,636 pcs) among automotive-qualified options. Suitable for automotive and industrial applications with AEC-Q200 compliance requirements.

RMCF0603FT37R4 (Stackpole Electronics Inc): Automotive-qualified alternative with dimensional specifications compatible with standard 0603 PCB layouts. Inventory level (10,451 pcs) supports moderate production volumes. Appropriate for automotive applications requiring AEC-Q200 certification.

All substitute parts maintain RoHS3 compliance, unlimited MSL rating, and identical electrical performance characteristics. Selection should be based on application requirements (automotive vs. industrial), supply chain availability, and design qualification status.

Frequently Asked Questions (FAQ)

Q: Can RC0603FR-0737R4L replace RC1608F37R4CS in any application?

A: RC0603FR-0737R4L is a direct electrical and mechanical equivalent. Both parts share identical resistance (37.4 Ohms), tolerance (±1%), power rating (0.1W), package (0603), temperature coefficient (±100ppm/°C), and operating range (-55°C ~ 155°C). Substitution is valid for all applications where the primary part is specified, provided no automotive qualification requirement exists.

Q: What is the difference between automotive-qualified and non-automotive substitutes?

A: CRCW060337R4FKEA, ERJ-3EKF37R4V, and RMCF0603FT37R4 include AEC-Q200 automotive qualification certification. This qualification indicates compliance with automotive industry reliability and quality standards. The RC0603FR-0737R4L does not carry automotive qualification. Selection depends on application classification: automotive applications require AEC-Q200 qualified parts; industrial applications may use either qualified or non-qualified parts.

Q: Are there dimensional differences between substitute parts?

A: Minor dimensional variations exist. CRCW060337R4FKEA and RMCF0603FT37R4 have length of 0.061" (1.55mm) compared to 0.063" (1.60mm) for the primary part and RC0603FR-0737R4L. CRCW060337R4FKEA has width of 0.033" (0.85mm) versus 0.031" (0.80mm) for other parts. CRCW060337R4FKEA has maximum height of 0.020" (0.50mm) versus 0.022" (0.55mm) for other parts. These variations are within standard 0603 package tolerances and do not affect electrical performance. High-density PCB layouts should verify clearance specifications.

Q: Do all substitute parts have the same moisture sensitivity level?

A: All parts, including the primary RC1608F37R4CS and all substitutes, have MSL rating of 1 (Unlimited). This indicates no moisture sensitivity restrictions and no special storage or handling requirements prior to soldering.

Q: Which substitute part offers the best supply chain availability?

A: ERJ-3EKF37R4V (Panasonic) offers the highest inventory level at 75,636 pcs, followed by RC0603FR-0737R4L (YAGEO) at 95,891 pcs. Both parts support high-volume production requirements. RMCF0603FT37R4 (Stackpole) and CRCW060337R4FKEA (Vishay Dale) have lower inventory levels but remain suitable for moderate production volumes.

Q: Are all parts RoHS3 compliant?

A: All parts listed—RC1608F37R4CS, RC0603FR-0737R4L, CRCW060337R4FKEA, ERJ-3EKF37R4V, and RMCF0603FT37R4—are RoHS3 compliant and REACH unaffected. No environmental or regulatory restrictions apply to substitution.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message