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RC1608F1651CS Equivalent & Substitute Parts Reference
Part Overview
The RC1608F1651CS is a 1.65 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 with moisture resistant construction and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified when alternative manufacturers offer components with identical or functionally equivalent electrical specifications, mechanical dimensions, and environmental ratings within acceptable tolerance ranges.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Resistance | 1.65 | 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 (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitute parts for the RC1608F1651CS are classified based on strict equivalence of the following critical parameters:
Electrical Equivalence Criteria:
- Resistance value: 1.65 kOhms
- Tolerance: ±1%
- Power rating: 0.1W (1/10W)
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C to 155°C
Mechanical Equivalence Criteria:
- Package type: 0603 (1608 Metric)
- Number of terminations: 2
- Composition: Thick Film
- Moisture resistance: Required
Compliance Criteria:
- RoHS3 compliance
- MSL rating: 1 (Unlimited)
- REACH status: REACH Unaffected
Parts are grouped into two categories:
Direct Equivalents: Parts meeting all electrical, mechanical, and compliance parameters with standard industrial packaging (Tape & Reel or Cut Tape).
Automotive-Qualified Equivalents: Parts meeting all above criteria with additional AEC-Q200 automotive qualification rating. These parts are functionally equivalent and suitable for general industrial applications while offering enhanced reliability documentation for automotive-grade applications.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance (kOhms) | Tolerance (%) | Power (W) | Package | Temp Coeff (ppm/°C) | Op Temp (°C) | Composition | Moisture Resistant | AEC-Q200 | RoHS3 | MSL |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RC1608F1651CS | Samsung Electro-Mechanics | 1.65 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | Yes | — | Yes | 1 |
| CR0603-FX-1651ELF | Bourns Inc. | 1.65 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | Yes | — | Yes | 1 |
| RC0603FR-071K65L | YAGEO | 1.65 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | Yes | — | Yes | 1 |
| AC0603FR-071K65L | YAGEO | 1.65 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | Yes | Yes | Yes | 1 |
| CRCW06031K65FKEA | Vishay Dale | 1.65 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | — | Yes | Yes | 1 |
| ERJ-3EKF1651V | Panasonic Electronic Components | 1.65 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | — | Yes | Yes | 1 |
| RMCF0603FT1K65 | Stackpole Electronics Inc | 1.65 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | Thick Film | — | Yes | Yes | 1 |
Engineering Selection Recommendations
Direct Equivalent Selection:
CR0603-FX-1651ELF (Bourns Inc.) and RC0603FR-071K65L (YAGEO) are direct functional equivalents to the RC1608F1651CS. Both parts match all electrical parameters, mechanical specifications, and compliance requirements without additional automotive qualification. These parts are suitable for standard industrial applications requiring standard reliability documentation.
Automotive-Qualified Selection:
AC0603FR-071K65L (YAGEO), CRCW06031K65FKEA (Vishay Dale), ERJ-3EKF1651V (Panasonic Electronic Components), and RMCF0603FT1K65 (Stackpole Electronics Inc) are functionally equivalent with AEC-Q200 automotive qualification. These parts meet all electrical and mechanical requirements of the RC1608F1651CS while providing enhanced reliability qualification documentation. Selection of automotive-qualified parts is appropriate for applications requiring automotive-grade component traceability or when sourcing from automotive-qualified supply chains.
Compliance Verification:
All listed substitute parts maintain RoHS3 compliance, MSL 1 rating, and REACH unaffected status consistent with the primary part. All parts are Active product status with established supply availability.
Frequently Asked Questions (FAQ)
Q: Can CR0603-FX-1651ELF replace RC1608F1651CS in any application?
A: CR0603-FX-1651ELF is a direct electrical and mechanical equivalent. Both parts share identical resistance (1.65 kOhms), tolerance (±1%), power rating (0.1W), package (0603), temperature coefficient (±100ppm/°C), and operating range (-55°C to 155°C). Direct substitution is valid for applications not requiring automotive qualification documentation.
Q: What is the difference between standard and AEC-Q200 qualified parts?
A: AEC-Q200 qualified parts (AC0603FR-071K65L, CRCW06031K65FKEA, ERJ-3EKF1651V, RMCF0603FT1K65) undergo additional automotive reliability testing and qualification. Electrically and mechanically, these parts are equivalent to the RC1608F1651CS. The AEC-Q200 rating provides enhanced documentation for automotive supply chain requirements. Non-automotive applications do not require AEC-Q200 qualification.
Q: Are there dimensional differences between substitute parts?
A: The RC1608F1651CS specifies dimensions of 0.063" L x 0.031" W (1.60mm x 0.80mm) with maximum seated height of 0.022" (0.55mm). CRCW06031K65FKEA has slightly different dimensions (0.061" L x 0.033" W / 1.55mm x 0.85mm) with maximum seated height of 0.020" (0.50mm). These dimensional variations remain within 0603 package tolerance and do not affect PCB layout compatibility. RMCF0603FT1K65 dimensions are 0.061" L x 0.031" W (1.55mm x 0.80mm) with 0.022" (0.55mm) maximum height. All parts are mechanically compatible with standard 0603 footprints.
Q: What packaging formats are available for substitute parts?
A: CR0603-FX-1651ELF and RC0603FR-071K65L are supplied in Tape & Reel (TR) format. AC0603FR-071K65L is supplied in Tape & Reel (TR). CRCW06031K65FKEA, ERJ-3EKF1651V, and RMCF0603FT1K65 are available in Cut Tape (CT) and Digi-Reel formats. Packaging selection depends on assembly process requirements and volume specifications.
Q: Do all substitute parts have the same moisture sensitivity level?
A: Yes. All listed substitute parts maintain MSL 1 (Unlimited) rating, identical to the RC1608F1651CS. This rating indicates unlimited shelf life without moisture bake requirements prior to soldering.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed are RoHS3 compliant and REACH unaffected, matching the compliance status of the RC1608F1651CS.
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