RC1608F1871CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F1871CS is a 1.87 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format. This surface mount device is rated for 0.1W (1/10W) power dissipation and operates across the temperature range of -55°C to 155°C. The component is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and is currently in active production status with 630 pieces available in inventory.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain optimization is required, or when design specifications allow for alternative qualified sources that meet identical electrical and mechanical parameters.

Key Parameters

Parameter	Value
Resistance	1.87 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
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant
Number of Terminations	2

Substitute Part Grouping Explanation

Substitution eligibility for the RC1608F1871CS is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match Exactly):

Resistance value: 1.87 kOhms
Tolerance: ±1%
Power rating: 0.1W (1/10W)
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C ~ 155°C

Mechanical Parameters (Must Match Exactly):

Package type: 0603 (1608 Metric)
Number of terminations: 2
Composition: Thick Film

Compliance Parameters (Must Match or Exceed):

RoHS Status: ROHS3 Compliant minimum
Moisture Sensitivity Level: 1 (Unlimited)

All substitute parts listed below meet these criteria. Parts are grouped into two categories: Direct Equivalents (identical specifications across all parameters) and Similar Parts (identical electrical and mechanical specifications with additional automotive qualification features).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Package	Temp Coeff	Op Temp Range	RoHS Status	MSL	Automotive AEC-Q200	Inventory (Pcs)
RC1608F1871CS	Samsung Electro-Mechanics	1.87 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	No	630
CR0603-FX-1871ELF	Bourns Inc.	1.87 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	No	58939
RC0603FR-071K87L	YAGEO	1.87 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	No	168099
AC0603FR-071K87L	YAGEO	1.87 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Yes	8620
CRCW06031K87FKEA	Vishay Dale	1.87 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Yes	29062
CRCW06031K87FKTA	Vishay Dale	1.87 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	RoHS Non-compliant	1	Yes	5932
ERJ-3EKF1871V	Panasonic Electronic Components	1.87 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Yes	92593
RMCF0603FT1K87	Stackpole Electronics Inc	1.87 kΩ	±1%	0.1	0603	±100ppm/°C	-55°C ~ 155°C	ROHS3	1	Yes	88805

Engineering Selection Recommendations

Direct Equivalents (Non-Automotive):

CR0603-FX-1871ELF (Bourns Inc.) and RC0603FR-071K87L (YAGEO) are direct functional equivalents to the RC1608F1871CS. Both parts maintain identical electrical specifications, mechanical dimensions, and ROHS3 compliance. These parts are suitable for applications where automotive qualification is not required. RC0603FR-071K87L offers the highest inventory availability at 168,099 pieces.

Automotive-Qualified Alternatives:

AC0603FR-071K87L (YAGEO), CRCW06031K87FKEA (Vishay Dale), ERJ-3EKF1871V (Panasonic Electronic Components), and RMCF0603FT1K87 (Stackpole Electronics Inc) are all AEC-Q200 qualified alternatives. These parts meet all electrical and mechanical specifications of the primary part while providing additional automotive-grade reliability certification. Selection among these options depends on design requirements for automotive qualification and inventory availability.

Compliance Consideration:

CRCW06031K87FKTA (Vishay Dale, Cut Tape packaging) is RoHS non-compliant and REACH affected. This part is not suitable for applications requiring ROHS3 compliance and should only be selected when legacy design requirements explicitly permit non-compliant components.

Packaging Consideration:

All substitute parts are available in Tape & Reel (TR) packaging except CRCW06031K87FKTA, which is supplied in Cut Tape (CT) & Digi-Reel format. Packaging selection should align with manufacturing assembly requirements and volume specifications.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC1608F1871CS with any of the listed parts without design modification?

A: Yes, for CR0603-FX-1871ELF and RC0603FR-071K87L. These parts are direct equivalents with identical electrical and mechanical specifications. For automotive-qualified parts (AC0603FR-071K87L, CRCW06031K87FKEA, ERJ-3EKF1871V, RMCF0603FT1K87), substitution is also valid from an electrical and mechanical standpoint; however, design documentation should reflect the change in manufacturer and any additional certifications gained.

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

A: The RC1608F1871CS is a standard industrial-grade resistor. The automotive-qualified substitutes (marked with AEC-Q200 rating) undergo additional qualification testing and reliability screening required for automotive applications. All parts maintain identical resistance, tolerance, power rating, temperature coefficient, and operating temperature range. The automotive versions provide enhanced reliability documentation suitable for automotive supply chains.

Q: Are there dimensional differences between substitute parts?

A: All parts conform to the 0603 (1608 Metric) package standard. Minor dimensional variations exist within tolerance: most parts measure 0.063" L x 0.031" W (1.60mm x 0.80mm), while CRCW06031K87FKEA measures 0.061" L x 0.033" W (1.55mm x 0.85mm) and CRCW06031K87FKTA measures 0.063" L x 0.033" W (1.60mm x 0.85mm). These variations remain within 0603 package specifications and do not affect PCB footprint compatibility.

Q: Which substitute part has the best inventory availability?

A: RC0603FR-071K87L (YAGEO) offers the highest inventory at 168,099 pieces. For automotive-qualified alternatives, ERJ-3EKF1871V (Panasonic) provides 92,593 pieces and RMCF0603FT1K87 (Stackpole) provides 88,805 pieces.

Q: Should I use CRCW06031K87FKTA if it is less expensive?

A: CRCW06031K87FKTA is RoHS non-compliant and REACH affected. Selection of this part is only appropriate if your design specifications explicitly permit non-compliant components and your supply chain documentation allows legacy component sourcing. For new designs or applications requiring ROHS3 compliance, use CRCW06031K87FKEA (Tape & Reel, ROHS3 compliant) instead.

Q: What is MSL 1 (Unlimited) moisture sensitivity?

A: MSL 1 indicates the component has unlimited shelf life under standard storage conditions (23°C ± 2°C, 45% ± 5% relative humidity) without requiring special moisture-barrier packaging or baking procedures prior to assembly. All listed parts carry MSL 1 rating.

Q: Can I mix different manufacturers' parts in the same production batch?

A: Yes. All listed parts meet identical electrical specifications (1.87 kΩ ±1%, 0.1W, ±100ppm/°C, -55°C ~ 155°C) and mechanical requirements (0603 package, 2 terminations, thick film composition). From a functional standpoint, mixing manufacturers is acceptable. However, design documentation and traceability records should reflect any manufacturer changes for quality and compliance purposes.

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