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RC1608F40R2CS Equivalent & Substitute Parts Reference
Part Overview
The RC1608F40R2CS is a 40.2 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics, rated at 0.1W (1/10W) in a 0603 (1608 Metric) surface mount package. This component is classified as Active product status and is ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component, enabling direct replacement in circuit designs without functional degradation.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Resistance | 40.2 | Ohms |
| 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 |
| RoHS Status | ROHS3 Compliant | - |
| Moisture Sensitivity Level | 1 (Unlimited) | - |
| Number of Terminations | 2 | - |
Substitute Part Grouping Explanation
Substitute parts are classified into two categories based on their alignment with the original RC1608F40R2CS specifications:
Direct Substitutes (Functionally Equivalent): Parts that match all critical electrical parameters (40.2 Ohms, ±1% tolerance, 0.1W power rating), mechanical dimensions (0603 package), composition (thick film), temperature characteristics (±100ppm/°C, -55°C to 155°C operating range), and compliance certifications (ROHS3, MSL 1). These parts are interchangeable without design modification.
Similar Substitutes (Functionally Equivalent with Enhanced Features): Parts that meet all electrical and mechanical requirements but include additional certifications such as Automotive AEC-Q200 qualification. These parts exceed the original specification and are suitable for applications requiring automotive-grade reliability.
Key Parameters Determining Substitution Eligibility:
- Resistance value: 40.2 Ohms (exact match required)
- Tolerance: ±1% (exact match required)
- Power rating: 0.1W / 1/10W (exact match required)
- Package: 0603 (1608 Metric) (exact match required)
- Composition: Thick Film (exact match required)
- Temperature coefficient: ±100ppm/°C (exact match required)
- Operating temperature: -55°C to 155°C (exact match required)
- RoHS compliance: ROHS3 (minimum requirement)
- MSL rating: 1 (Unlimited) (minimum requirement)
Parameter Comparison
| Manufacturer | Part Number | Resistance (Ohms) | Tolerance | Power (W) | Package | Temp Coeff (ppm/°C) | Op Temp (°C) | Composition | RoHS | MSL | AEC-Q200 | Packaging Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Samsung Electro-Mechanics | RC1608F40R2CS | 40.2 | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | ROHS3 | 1 | No | Tape & Reel |
| Bourns Inc. | CR0603-FX-40R2ELF | 40.2 | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | ROHS3 | 1 | No | Tape & Reel |
| YAGEO | RC0603FR-0740R2L | 40.2 | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | ROHS3 | 1 | No | Tape & Reel |
| YAGEO | AC0603FR-0740R2L | 40.2 | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | ROHS3 | 1 | Yes | Tape & Reel |
| Vishay Dale | CRCW060340R2FKEA | 40.2 | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | ROHS3 | 1 | Yes | Cut Tape & Digi-Reel |
| Panasonic Electronic Components | ERJ-3EKF40R2V | 40.2 | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | ROHS3 | 1 | Yes | Tape & Reel |
| Stackpole Electronics Inc | RMCF0603FT40R2 | 40.2 | ±1% | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | ROHS3 | 1 | Yes | Tape & Reel |
Engineering Selection Recommendations
All identified substitute parts maintain Active product status and full ROHS3 compliance with MSL 1 rating, ensuring compatibility with the original RC1608F40R2CS in standard industrial applications.
For Standard Industrial Applications: CR0603-FX-40R2ELF (Bourns Inc.) and RC0603FR-0740R2L (YAGEO) are direct functional equivalents without additional automotive certification. These parts are suitable for general-purpose circuit designs where AEC-Q200 qualification is not required.
For Automotive and High-Reliability Applications: AC0603FR-0740R2L (YAGEO), CRCW060340R2FKEA (Vishay Dale), ERJ-3EKF40R2V (Panasonic Electronic Components), and RMCF0603FT40R2 (Stackpole Electronics Inc) include Automotive AEC-Q200 certification. These parts exceed the original specification and are appropriate for automotive-grade designs, medical devices, and applications requiring enhanced reliability documentation.
Packaging Considerations: Most substitute parts are supplied in Tape & Reel (TR) packaging. CRCW060340R2FKEA is available in Cut Tape (CT) & Digi-Reel® format, which may affect procurement and assembly workflows depending on production requirements.
Frequently Asked Questions (FAQ)
Q: Can CR0603-FX-40R2ELF replace RC1608F40R2CS in any application?
A: CR0603-FX-40R2ELF matches all electrical specifications (40.2 Ohms, ±1%, 0.1W), mechanical dimensions (0603 package), and compliance certifications (ROHS3, MSL 1) of the original part. Direct substitution is valid for applications not requiring automotive AEC-Q200 certification.
Q: What is the difference between direct substitutes and similar substitutes?
A: Direct substitutes (CR0603-FX-40R2ELF, RC0603FR-0740R2L) provide equivalent functionality without additional certifications. Similar substitutes (AC0603FR-0740R2L, CRCW060340R2FKEA, ERJ-3EKF40R2V, RMCF0603FT40R2) include Automotive AEC-Q200 qualification, making them suitable for automotive and high-reliability applications while maintaining full compatibility with the original part.
Q: Are there dimensional differences between substitute parts?
A: All parts conform to the 0603 (1608 Metric) package standard. Minor dimensional variations exist within manufacturing tolerances: most parts measure 0.063" L x 0.031" W (1.60mm x 0.80mm), while CRCW060340R2FKEA measures 0.061" L x 0.033" W (1.55mm x 0.85mm). These variations remain within standard PCB footprint tolerances and do not affect assembly compatibility.
Q: Which substitute part has the highest inventory availability?
A: ERJ-3EKF40R2V (Panasonic Electronic Components) has the highest reported inventory at 176,552 pieces. RC0603FR-0740R2L (YAGEO) has 27,273 pieces available. Both parts are suitable for immediate procurement in high-volume applications.
Q: Can I use an AEC-Q200 qualified part in a non-automotive application?
A: Yes. AEC-Q200 certification represents an enhanced specification that exceeds standard industrial requirements. Parts such as AC0603FR-0740R2L, CRCW060340R2FKEA, ERJ-3EKF40R2V, and RMCF0603FT40R2 are fully compatible with non-automotive applications and provide additional reliability assurance.
Q: Does packaging type (Tape & Reel vs. Cut Tape) affect electrical performance?
A: Packaging type does not affect electrical performance. Tape & Reel (TR) packaging is optimized for automated assembly lines, while Cut Tape (CT) & Digi-Reel® packaging (CRCW060340R2FKEA) is suitable for lower-volume or manual assembly processes. Selection depends on production workflow requirements, not component functionality.
Q: Are all substitute parts REACH compliant?
A: Yes. All identified substitute parts maintain REACH Unaffected status, matching the original RC1608F40R2CS compliance profile.
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