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RC1608F3091CS Equivalent & Substitute Parts Reference
Part Overview
The RC1608F3091CS is a 3.09 kOhms ±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 moisture-resistant construction and unlimited moisture sensitivity level (MSL 1). The part is ROHS3 compliant and REACH unaffected, suitable for general industrial and commercial applications requiring precision resistive elements in compact surface-mount form factors.
Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when supply chain optimization requires alternative sourcing, or when design flexibility permits selection from multiple qualified manufacturers meeting identical electrical and mechanical specifications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Resistance | 3.09 | kOhms |
| Tolerance | ±1 | % |
| Power Rating | 0.1 | W (1/10W) |
| Package / Case | 0603 (1608 Metric) | — |
| Composition | Thick Film | — |
| Temperature Coefficient | ±100 | ppm/°C |
| Operating Temperature Range | -55 to 155 | °C |
| Moisture Resistance | Yes | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
| Number of Terminations | 2 | — |
Substitute Part Grouping Explanation
Substitution eligibility for the RC1608F3091CS is determined by strict equivalence across the following critical parameters:
Mandatory Matching Parameters:
- Resistance value: 3.09 kOhms
- Tolerance: ±1%
- Power rating: 0.1W (1/10W)
- Package: 0603 (1608 Metric)
- Composition: Thick Film
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C to 155°C
- Moisture resistance: Required
- RoHS compliance: ROHS3 Compliant
- Moisture sensitivity level: 1 (Unlimited)
- Termination count: 2
All substitute parts listed below meet these mandatory parameters. Substitute parts are grouped into two categories:
Direct Substitutes: Parts with identical specifications and no additional certifications beyond base requirements.
Similar Substitutes: Parts meeting all mandatory parameters with additional automotive AEC-Q200 qualification. These parts are suitable for applications where the original part is specified, as AEC-Q200 certification represents enhanced reliability screening and does not restrict use in non-automotive applications.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance (kOhms) | Tolerance (%) | Power (W) | Package | Temp Coeff (ppm/°C) | Op Temp (°C) | Moisture Resistant | AEC-Q200 | RoHS3 | MSL | Packaging Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RC1608F3091CS | Samsung Electro-Mechanics | 3.09 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | Yes | — | Yes | 1 | Cut Tape (CT) |
| CR0603-FX-3091ELF | Bourns Inc. | 3.09 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | Yes | — | Yes | 1 | Cut Tape (CT) & Digi-Reel® |
| RC0603FR-073K09L | YAGEO | 3.09 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | Yes | — | Yes | 1 | Tape & Reel (TR) |
| AC0603FR-073K09L | YAGEO | 3.09 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | Yes | Yes | Yes | 1 | Tape & Reel (TR) |
| CRCW06033K09FKEA | Vishay Dale | 3.09 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | — | Yes | Yes | 1 | Tape & Reel (TR) |
| ERJ-3EKF3091V | Panasonic Electronic Components | 3.09 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | — | Yes | Yes | 1 | Tape & Reel (TR) |
| RMCF0603FG3K09 | Stackpole Electronics Inc | 3.09 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | — | Yes | Yes | 1 | Tape & Reel (TR) |
| RMCF0603FT3K09 | Stackpole Electronics Inc | 3.09 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | — | Yes | Yes | 1 | Tape & Reel (TR) |
Engineering Selection Recommendations
Direct Substitute Selection:
CR0603-FX-3091ELF (Bourns Inc.) is the primary direct substitute, offering identical electrical and mechanical specifications with Cut Tape and Digi-Reel® packaging options. This part maintains feature parity with the original RC1608F3091CS without additional certifications.
RC0603FR-073K09L (YAGEO) is a direct electrical equivalent available in Tape & Reel packaging, suitable for high-volume automated assembly operations.
Automotive-Qualified Substitute Selection:
AC0603FR-073K09L (YAGEO), CRCW06033K09FKEA (Vishay Dale), ERJ-3EKF3091V (Panasonic Electronic Components), RMCF0603FG3K09 (Stackpole Electronics Inc), and RMCF0603FT3K09 (Stackpole Electronics Inc) all meet mandatory specifications with AEC-Q200 automotive qualification. These parts are functionally interchangeable with the original part and provide enhanced reliability documentation suitable for applications requiring automotive-grade component traceability.
RMCF0603FT3K09 demonstrates highest inventory availability (122,553 pieces) among automotive-qualified alternatives, supporting extended production runs and supply chain continuity.
Packaging Considerations:
Selection between Cut Tape (CT) and Tape & Reel (TR) packaging depends on assembly methodology. Cut Tape format suits manual or low-volume pick-and-place operations. Tape & Reel format optimizes automated high-speed assembly lines. Both formats maintain identical electrical performance and component reliability.
Frequently Asked Questions (FAQ)
Q: Can AC0603FR-073K09L replace RC1608F3091CS in non-automotive applications?
A: Yes. AEC-Q200 certification represents additional reliability screening and qualification. Parts meeting automotive standards are fully compatible with general industrial and commercial applications. The automotive qualification does not restrict component use outside automotive environments.
Q: What is the difference between Cut Tape and Tape & Reel packaging?
A: Cut Tape (CT) packaging provides individual component strips suitable for manual assembly or low-volume production. Tape & Reel (TR) packaging supplies components on continuous reels optimized for automated pick-and-place equipment. Electrical and mechanical specifications remain identical between packaging formats.
Q: Are all listed substitutes interchangeable without circuit redesign?
A: Yes. All substitute parts listed meet identical mandatory parameters: 3.09 kOhms ±1% resistance, 0.1W power rating, 0603 package, ±100ppm/°C temperature coefficient, -55°C to 155°C operating range, and ROHS3 compliance. Direct PCB substitution is supported without design modification.
Q: What does Moisture Sensitivity Level (MSL) 1 mean?
A: MSL 1 indicates unlimited shelf life without moisture bake-out requirements. Components rated MSL 1 do not require special moisture control during storage, handling, or assembly, simplifying supply chain logistics and manufacturing processes.
Q: Why do some substitutes list automotive AEC-Q200 qualification?
A: AEC-Q200 is an automotive industry standard defining enhanced component qualification, reliability testing, and traceability requirements. Manufacturers voluntarily pursue this certification to document component suitability for automotive applications. Parts with AEC-Q200 certification are suitable for all applications, including non-automotive use.
Q: How do I select between multiple substitute options?
A: Selection criteria include: (1) packaging format matching assembly equipment capability (Cut Tape vs. Tape & Reel), (2) inventory availability for production volume requirements, (3) supplier lead time and geographic location, (4) cost optimization within approved supplier networks, and (5) existing qualification status within your organization's approved parts list.
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