RC1608F2613CS Equivalent & Substitute Parts Reference

Part Overview

The RC1608F2613CS is a 261 kOhms ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.1W (1/10W) power dissipation in a 0603 (1608 Metric) surface-mount package. This component is classified as Active product status with moisture-resistant construction and operates across the temperature range of -55°C to 155°C. The part is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain optimization requires alternative sourcing, or when design specifications permit functional alternatives from qualified manufacturers. All substitute parts listed maintain identical electrical specifications and mechanical compatibility within the defined tolerance parameters.

Key Parameters

Parameter	Value	Unit	Substitution Criticality
Resistance Value	261	kOhms	Critical - Must Match Exactly
Tolerance	±1%	Percent	Critical - Must Match Exactly
Power Rating	0.1	Watts (1/10W)	Critical - Must Match or Exceed
Package / Case	0603 (1608 Metric)	Metric	Critical - Physical Compatibility
Composition	Thick Film	Type	Critical - Performance Characteristics
Temperature Coefficient	±100	ppm/°C	Critical - Stability Parameter
Operating Temperature Range	-55 to 155	°C	Critical - Environmental Compatibility
Moisture Resistance	Yes	Feature	Important - Environmental Protection
Number of Terminations	2	Count	Critical - Electrical Connectivity
RoHS Status	ROHS3 Compliant	Certification	Important - Regulatory Compliance
MSL Rating	1 (Unlimited)	Level	Important - Storage & Handling

Substitute Part Grouping Explanation

Substitution logic for the RC1608F2613CS is based on strict electrical and mechanical parameter matching. All substitute parts must satisfy the following criteria:

Mandatory Matching Parameters:

Resistance value: 261 kOhms (exact match)
Tolerance: ±1% (exact match)
Power rating: 0.1W minimum (equal or greater acceptable)
Package: 0603 (1608 Metric) form factor
Composition: Thick film construction
Temperature coefficient: ±100ppm/°C
Operating temperature range: -55°C to 155°C minimum
Number of terminations: 2
Moisture sensitivity level: MSL 1 or better

Acceptable Variations:

Packaging format (Cut Tape vs. Tape & Reel) does not affect electrical or mechanical compatibility
Manufacturer differences are acceptable provided all electrical parameters match
Physical dimensions may vary within ±0.005" (0.127mm) for length and width while maintaining 0603 package classification
Height variations within ±0.002" (0.051mm) are acceptable for PCB assembly compatibility
Automotive AEC-Q200 qualification is an enhancement feature, not a requirement for substitution

Compliance Considerations:

ROHS3 compliance is preferred but not mandatory for substitution eligibility
REACH status variations are noted but do not prevent substitution in non-regulated applications
All parts maintain ECCN EAR99 and HTSUS 8533.21.0030 classifications

Parameter Comparison

Manufacturer	Part Number	Resistance (kOhms)	Tolerance (%)	Power (W)	Package	Temp Coeff (ppm/°C)	Op Temp (°C)	Moisture Resistant	AEC-Q200	RoHS3	Packaging Format
Samsung Electro-Mechanics	RC1608F2613CS	261	±1	0.1	0603	±100	-55 to 155	Yes	No	Yes	Cut Tape (CT)
Bourns Inc.	CR0603-FX-2613ELF	261	±1	0.1	0603	±100	-55 to 155	Yes	No	Yes	Tape & Reel (TR)
YAGEO	RC0603FR-07261KL	261	±1	0.1	0603	±100	-55 to 155	Yes	No	Yes	Tape & Reel (TR)
YAGEO	AC0603FR-07261KL	261	±1	0.1	0603	±100	-55 to 155	Yes	Yes	Tape & Reel (TR)
Vishay Dale	CRCW0603261KFKEA	261	±1	0.1	0603	±100	-55 to 155	No	Yes	Cut Tape (CT) & Digi-Reel®
Vishay Dale	CRCW0603261KFKTA	261	±1	0.1	0603	±100	-55 to 155	No	Yes	Tape & Reel (TR)
Panasonic Electronic Components	ERJ-3EKF2613V	261	±1	0.1	0603	±100	-55 to 155	No	Yes	Tape & Reel (TR)
Stackpole Electronics Inc	RMCF0603FT261K	261	±1	0.1	0603	±100	-55 to 155	No	Yes	Tape & Reel (TR)

Engineering Selection Recommendations

Direct Equivalent (Highest Compatibility):

CR0603-FX-2613ELF (Bourns Inc.) is the primary direct equivalent. This part maintains identical electrical specifications, moisture-resistant construction, and ROHS3 compliance with the RC1608F2613CS. The only difference is packaging format (Tape & Reel vs. Cut Tape), which does not affect electrical performance or PCB assembly compatibility. This part is suitable for direct substitution in all applications.

RC0603FR-07261KL (YAGEO) is a secondary direct equivalent with identical specifications and moisture-resistant features. ROHS3 compliance and MSL 1 rating match the primary part exactly. This part is suitable for direct substitution in all applications.

Qualified Alternatives (Enhanced Features):

AC0603FR-07261KL (YAGEO), CRCW0603261KFKEA (Vishay Dale), CRCW0603261KFKTA (Vishay Dale), ERJ-3EKF2613V (Panasonic Electronic Components), and RMCF0603FT261K (Stackpole Electronics Inc) all meet the core electrical and mechanical requirements. These parts carry AEC-Q200 automotive qualification, which exceeds the base specification of the RC1608F2613CS.

Compliance Notes:

CRCW0603261KFKTA is marked as RoHS non-compliant with REACH Affected status. This part is electrically and mechanically equivalent but restricted in applications requiring ROHS3 compliance or REACH compliance.

All other substitute parts maintain ROHS3 compliance and REACH Unaffected status, matching or exceeding the regulatory posture of the primary part.

Selection Criteria by Application:

For general industrial applications requiring direct replacement: CR0603-FX-2613ELF or RC0603FR-07261KL.

For automotive or high-reliability applications: AC0603FR-07261KL, CRCW0603261KFKEA, ERJ-3EKF2613V, or RMCF0603FT261K.

For applications with strict regulatory requirements: Avoid CRCW0603261KFKTA; select from ROHS3-compliant alternatives.

Frequently Asked Questions (FAQ)

Q: Can I substitute RC1608F2613CS with any of the listed parts without circuit redesign?

A: Yes. All listed substitute parts maintain identical resistance value (261 kOhms), tolerance (±1%), power rating (0.1W), package form factor (0603), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). Electrical performance and PCB footprint compatibility are preserved. No circuit redesign is required.

Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?

A: Cut Tape and Tape & Reel are packaging and delivery formats only. They do not affect the electrical specifications or physical dimensions of the component itself. Cut Tape is suitable for manual assembly or small-volume production. Tape & Reel is optimized for automated pick-and-place assembly in high-volume manufacturing. The component performance is identical regardless of packaging format.

Q: Why do some substitute parts list AEC-Q200 qualification while the primary part does not?

A: AEC-Q200 is an automotive industry qualification standard that certifies component reliability under automotive operating conditions. The primary RC1608F2613CS does not carry this certification, but several substitutes do. AEC-Q200 qualification is an enhancement feature that does not change the core electrical specifications. Parts with AEC-Q200 are suitable for automotive applications; parts without it are suitable for general industrial applications. Both types are electrically equivalent.

Q: Is moisture resistance a critical parameter for substitution?

A: Moisture resistance is an important feature that affects long-term reliability in humid environments. The primary part RC1608F2613CS includes moisture-resistant construction. CR0603-FX-2613ELF and RC0603FR-07261KL also include this feature. Other substitutes (CRCW0603261KFKEA, CRCW0603261KFKTA, ERJ-3EKF2613V, RMCF0603FT261K) do not explicitly list moisture resistance. For applications in high-humidity or marine environments, CR0603-FX-2613ELF or RC0603FR-07261KL are preferred.

Q: What does MSL 1 (Unlimited) mean?

A: MSL (Moisture Sensitivity Level) 1 indicates the lowest moisture sensitivity classification. MSL 1 components have unlimited shelf life and do not require special moisture-controlled storage or baking procedures before soldering. All listed parts maintain MSL 1 rating, ensuring consistent handling requirements.

Q: Can I use CRCW0603261KFKTA in a RoHS-regulated application?

A: No. CRCW0603261KFKTA is marked as RoHS non-compliant with REACH Affected status. This part is not suitable for applications requiring ROHS3 compliance or REACH compliance. Select from the ROHS3-compliant alternatives: CR0603-FX-2613ELF, RC0603FR-07261KL, AC0603FR-07261KL, CRCW0603261KFKEA, ERJ-3EKF2613V, or RMCF0603FT261K.

Q: Are there physical dimension differences between substitute parts?

A: Minor physical dimension variations exist within the 0603 package classification. The primary part measures 0.063" L × 0.031" W (1.60mm × 0.80mm) with maximum seated height of 0.022" (0.55mm). CRCW0603261KFKEA measures 0.061" L × 0.033" W (1.55mm × 0.85mm) with 0.020" (0.50mm) height. CRCW0603261KFKTA measures 0.063" L × 0.033" W (1.60mm × 0.85mm) with 0.020" (0.50mm) height. RMCF0603FT261K measures 0.061" L × 0.031" W (1.55mm × 0.80mm) with 0.022" (0.55mm) height. These variations remain within standard 0603 package tolerances and do not affect PCB assembly compatibility.

Q: Which substitute part has the highest inventory availability?

A: RC0603FR-07261KL (YAGEO) has the highest inventory with 250,949 pieces in stock. CR0603-FX-2613ELF (Bourns Inc.) has 36,003 pieces. ERJ-3EKF2613V (Panasonic) has 62,440 pieces. For applications requiring immediate availability, RC0603FR-07261KL is the optimal choice.

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