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RC1608F4532CS Equivalent & Substitute Parts Reference
Part Overview
The RC1608F4532CS is a 45.3 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 offering identical electrical and mechanical specifications.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Resistance | 45.3 | 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 Sensitivity Level | 1 (Unlimited) | — |
| RoHS Status | ROHS3 Compliant | — |
| Number of Terminations | 2 | — |
Substitute Part Grouping Explanation
Substitution eligibility for the RC1608F4532CS is determined by strict equivalence across the following critical parameters:
Mandatory Matching Parameters:
- Resistance value: 45.3 kOhms
- Tolerance: ±1%
- Power rating: 0.1W (1/10W)
- Package designation: 0603 (1608 Metric)
- Composition: Thick Film
- Temperature coefficient: ±100ppm/°C
- Operating temperature range: -55°C to 155°C
- Moisture sensitivity level: 1 (Unlimited)
- RoHS compliance: ROHS3 Compliant
- Number of terminations: 2
All substitute parts listed in this reference meet these mandatory parameters without exception. Variations in packaging format (Tape & Reel versus Cut Tape), minor dimensional tolerances within standard specifications, and manufacturer-specific series designations do not affect functional interchangeability.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance (kOhms) | Tolerance (%) | Power (W) | Package | Temp Coeff (ppm/°C) | Op Temp (°C) | MSL | RoHS | Product Status | Packaging Format |
|---|---|---|---|---|---|---|---|---|---|---|---|
| RC1608F4532CS | Samsung Electro-Mechanics | 45.3 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | Active | Tape & Reel |
| CR0603-FX-4532ELF | Bourns Inc. | 45.3 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | Active | Tape & Reel |
| RC0603FR-0745K3L | YAGEO | 45.3 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | Active | Cut Tape & Digi-Reel |
| MCR03ERTF4532 | Rohm Semiconductor | 45.3 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | Discontinued at DiGi Electronics | Cut Tape & Digi-Reel |
| AC0603FR-0745K3L | YAGEO | 45.3 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | Active | Tape & Reel |
| CRCW060345K3FKEA | Vishay Dale | 45.3 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | Active | Cut Tape & Digi-Reel |
| ERJ-3EKF4532V | Panasonic Electronic Components | 45.3 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | Active | Tape & Reel |
| RMCF0603FT45K3 | Stackpole Electronics Inc | 45.3 | ±1 | 0.1 | 0603 | ±100 | -55 to 155 | 1 | ROHS3 | Active | Tape & Reel |
Engineering Selection Recommendations
Primary Substitutes (Direct Equivalents - Active Status):
CR0603-FX-4532ELF (Bourns Inc.) and RC0603FR-0745K3L (YAGEO) are direct functional equivalents with active product status. Both maintain identical electrical specifications and RoHS3 compliance. Selection between these and the primary part depends on supply availability and procurement lead times.
Automotive-Qualified Alternatives (AEC-Q200 Rated):
AC0603FR-0745K3L (YAGEO), CRCW060345K3FKEA (Vishay Dale), ERJ-3EKF4532V (Panasonic), and RMCF0603FT45K3 (Stackpole Electronics) incorporate automotive AEC-Q200 qualification in addition to standard specifications. These parts are suitable for applications requiring automotive-grade reliability and traceability. All maintain active product status with substantial inventory availability.
Discontinued Part (Not Recommended for New Designs):
MCR03ERTF4532 (Rohm Semiconductor) is discontinued at DiGi Electronics and should not be selected for new designs or long-term production requirements. This part remains electrically equivalent but lacks ongoing manufacturer support and supply continuity.
Selection Criteria:
- For general industrial applications: CR0603-FX-4532ELF, RC0603FR-0745K3L, or RMCF0603FT45K3
- For automotive applications: AC0603FR-0745K3L, CRCW060345K3FKEA, ERJ-3EKF4532V, or RMCF0603FT45K3
- For maximum inventory availability: RMCF0603FT45K3 (231,751 pcs) or ERJ-3EKF4532V (65,931 pcs)
Frequently Asked Questions (FAQ)
Q: Can I substitute RC1608F4532CS with any of the listed parts without circuit redesign?
A: Yes. All listed substitute parts meet identical electrical and mechanical specifications including resistance value, tolerance, power rating, package format, temperature coefficient, and operating temperature range. No circuit redesign is required for functional interchangeability.
Q: What is the difference between Tape & Reel and Cut Tape & Digi-Reel packaging?
A: Both packaging formats contain identical components. Tape & Reel packaging is supplied on continuous carrier tape suitable for automated pick-and-place equipment. Cut Tape & Digi-Reel packaging provides the same components in smaller quantities on cut tape segments or alternative reel formats. Selection depends on production volume and assembly equipment compatibility, not component performance.
Q: Are the automotive AEC-Q200 qualified parts suitable for non-automotive applications?
A: Yes. AEC-Q200 qualification represents an additional quality and reliability standard beyond standard RoHS3 compliance. Parts meeting AEC-Q200 (AC0603FR-0745K3L, CRCW060345K3FKEA, ERJ-3EKF4532V, RMCF0603FT45K3) are fully compatible with general industrial and commercial applications and offer enhanced reliability margins.
Q: Why is MCR03ERTF4532 listed if it is discontinued?
A: MCR03ERTF4532 is included for reference purposes to document historical equivalence and to guide users away from this part for new designs. Existing inventory may remain available through secondary distributors, but primary manufacturer support has ended. New designs should select from active-status alternatives.
Q: Do all substitute parts have the same physical dimensions?
A: All parts conform to 0603 (1608 Metric) package specification. Minor dimensional variations exist within standard tolerances (for example, CRCW060345K3FKEA dimensions are 0.061" L x 0.033" W versus 0.063" L x 0.031" W for other parts). These variations remain within PCB footprint design tolerances and do not affect assembly or performance.
Q: What is Moisture Sensitivity Level (MSL) 1, and why is it important?
A: MSL 1 indicates unlimited shelf life without moisture baking requirements. All listed parts carry MSL 1 rating, meaning they can be stored indefinitely at standard conditions without special humidity control or pre-reflow baking procedures. This simplifies inventory management and reduces manufacturing process complexity.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts carry ROHS3 Compliant status, confirming compliance with Restriction of Hazardous Substances Directive requirements. This ensures compatibility with procurement standards in regulated industries and markets requiring RoHS certification.
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