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RC1608F1650CS Equivalent & Substitute Parts Reference
Part Overview
The RC1608F1650CS is a 165 Ohm ±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 unlimited moisture sensitivity level (MSL 1). The part is ROHS3 compliant and suitable for general industrial applications requiring standard reliability specifications.
Equivalent and substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative packaging formats are required for production optimization, or when design specifications permit the use of functionally identical components from qualified alternative manufacturers.
Substiute Parts
Key Parameters
| Parameter | Value | Substitution Criticality |
|---|---|---|
| Resistance Value | 165 Ohms | Critical - Must Match Exactly |
| Tolerance | ±1% | Critical - Must Match Exactly |
| Power Rating | 0.1W (1/10W) | Critical - Must Match or Exceed |
| Package / Case | 0603 (1608 Metric) | Critical - Must Match Exactly |
| Composition | Thick Film | Critical - Must Match Exactly |
| Temperature Coefficient | ±100ppm/°C | Critical - Must Match Exactly |
| Operating Temperature Range | -55°C ~ 155°C | Critical - Must Match or Exceed |
| Moisture Resistance | Yes | Important - Preferred for Reliability |
| Number of Terminations | 2 | Critical - Must Match Exactly |
| RoHS Status | ROHS3 Compliant | Important - Regulatory Requirement |
| MSL Rating | 1 (Unlimited) | Important - Storage & Handling |
Substitute Part Grouping Explanation
Substitution eligibility for the RC1608F1650CS is determined by strict electrical and mechanical parameter matching. All substitute parts must satisfy the following mandatory criteria:
Electrical Parameters (Non-Negotiable):
- Resistance value: 165 Ohms
- Tolerance: ±1%
- Power rating: 0.1W minimum
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C to 155°C minimum
Mechanical Parameters (Non-Negotiable):
- Package type: 0603 (1608 Metric)
- Composition: Thick Film
- Number of terminations: 2
- Moisture resistant construction
Compliance Parameters (Regulatory):
- RoHS3 compliance required for standard applications
- MSL 1 rating (unlimited moisture sensitivity level)
Substitute parts are classified into two categories:
Direct Substitutes: Parts meeting all electrical, mechanical, and compliance parameters with identical functional performance. These include CR0603-FX-1650ELF (Bourns Inc.) and RC0603FR-07165RL (YAGEO).
Similar Substitutes with Enhanced Features: Parts meeting all core parameters but including additional certifications such as Automotive AEC-Q200 qualification. These include AC0603FR-07165RL (YAGEO), CRCW0603165RFKEA and CRCW0603165RFKTA (Vishay Dale), ERJ-3EKF1650V (Panasonic), and RMCF0603FT165R (Stackpole Electronics). These parts are functionally equivalent and backward compatible for non-automotive applications.
Parameter Comparison
| Manufacturer | Part Number | Resistance | Tolerance | Power (W) | Package | Temp Coeff | Op Temp Range | Composition | Moisture Resistant | RoHS Status | MSL | Packaging Format |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Samsung Electro-Mechanics | RC1608F1650CS | 165 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | Yes | ROHS3 | 1 | Cut Tape (CT) |
| Bourns Inc. | CR0603-FX-1650ELF | 165 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | Yes | ROHS3 | 1 | Tape & Reel (TR) |
| YAGEO | RC0603FR-07165RL | 165 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | Yes | ROHS3 | 1 | Tape & Reel (TR) |
| YAGEO | AC0603FR-07165RL | 165 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | Yes | ROHS3 | 1 | Tape & Reel (TR) |
| Vishay Dale | CRCW0603165RFKEA | 165 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | No | ROHS3 | 1 | Cut Tape (CT) & Digi-Reel® |
| Vishay Dale | CRCW0603165RFKTA | 165 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | No | RoHS Non-Compliant | 1 | Tape & Reel (TR) |
| Panasonic Electronic Components | ERJ-3EKF1650V | 165 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | No | ROHS3 | 1 | Cut Tape (CT) & Digi-Reel® |
| Stackpole Electronics Inc | RMCF0603FT165R | 165 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | No | ROHS3 | 1 | Tape & Reel (TR) |
Engineering Selection Recommendations
For Direct Substitution (Identical Specifications):
CR0603-FX-1650ELF (Bourns Inc.) and RC0603FR-07165RL (YAGEO) are direct functional equivalents to RC1608F1650CS. Both parts match all electrical parameters, maintain ROHS3 compliance, and provide identical performance characteristics. Selection between these options depends on packaging format requirements: CR0603-FX-1650ELF is supplied in Tape & Reel format, while RC0603FR-07165RL is also available in Tape & Reel. Both are suitable for applications where the original Samsung part is unavailable.
For Applications Permitting Enhanced Specifications:
AC0603FR-07165RL (YAGEO), CRCW0603165RFKEA (Vishay Dale), ERJ-3EKF1650V (Panasonic), and RMCF0603FT165R (Stackpole Electronics) are functionally equivalent parts with Automotive AEC-Q200 certification. These parts exceed the base specification of RC1608F1650CS and are backward compatible for use in non-automotive applications. Selection among these options is based on packaging format availability and supply chain considerations.
Compliance Considerations:
CRCW0603165RFKTA (Vishay Dale) is RoHS non-compliant and REACH affected. This part is not recommended for new designs or applications with regulatory compliance requirements. Use only when legacy system compatibility or specific design constraints mandate this part number.
Packaging Format Selection:
For production environments using automated tape & reel handling, CR0603-FX-1650ELF, RC0603FR-07165RL, CRCW0603165RFKTA, and RMCF0603FT165R are appropriate. For manual assembly or mixed-format production, CRCW0603165RFKEA, ERJ-3EKF1650V, and the original RC1608F1650CS (Cut Tape format) are suitable.
Frequently Asked Questions (FAQ)
Q: Can I use AC0603FR-07165RL in place of RC1608F1650CS in a non-automotive application?
A: Yes. AC0603FR-07165RL meets all electrical and mechanical parameters of RC1608F1650CS and is backward compatible. The Automotive AEC-Q200 certification represents an enhanced qualification level and does not restrict use in standard industrial applications. All core specifications—resistance, tolerance, power rating, temperature range, and package—are identical.
Q: What is the difference between Cut Tape (CT) and Tape & Reel (TR) packaging?
A: Cut Tape packaging supplies individual components on carrier tape in smaller quantities, suitable for manual assembly and prototyping. Tape & Reel packaging supplies components on continuous reel format for automated pick-and-place assembly equipment. Both formats contain identical components; packaging selection depends on assembly process requirements.
Q: Why is CRCW0603165RFKTA marked as RoHS non-compliant?
A: CRCW0603165RFKTA does not meet ROHS3 compliance standards and is REACH affected. This part is retained in the substitute list for legacy system compatibility only. For new designs and applications subject to regulatory compliance requirements, use ROHS3-compliant alternatives such as CR0603-FX-1650ELF, RC0603FR-07165RL, or CRCW0603165RFKEA.
Q: Are all substitute parts rated for the same temperature range as RC1608F1650CS?
A: Yes. All listed substitute parts operate across the -55°C to 155°C temperature range, matching the original specification. Temperature coefficient is ±100ppm/°C for all parts, ensuring equivalent thermal stability.
Q: Can I mix different manufacturers' parts in the same production batch?
A: Yes. All substitute parts listed are functionally equivalent and meet identical electrical specifications. Mixing manufacturers in a single batch does not affect circuit performance. However, production documentation should reflect the specific part numbers used for traceability and future service requirements.
Q: What does MSL 1 (Unlimited) mean for storage and handling?
A: MSL 1 rating indicates unlimited moisture sensitivity level, meaning the component does not require special moisture-controlled storage conditions. These parts can be stored at standard ambient conditions without desiccant packaging or controlled humidity environments, simplifying inventory management and reducing storage costs.
Q: Is the 0603 package size identical across all manufacturers?
A: The 0603 (1608 Metric) package designation is standardized. However, minor dimensional variations exist between manufacturers. CRCW0603165RFKEA and CRCW0603165RFKTA show slightly different length (0.061" vs 0.063") and height (0.020" vs 0.022") specifications compared to the primary part. These variations remain within industry tolerance standards and do not affect PCB layout or assembly compatibility.
Q: Which substitute part has the highest inventory availability?
A: RC0603FR-07165RL (YAGEO) has the highest documented inventory at 175,210 pieces. ERJ-3EKF1650V (Panasonic) follows with 290,088 pieces. For applications requiring immediate availability, these parts are recommended.
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