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RC1608F751CS 750 Ohm 1% 1/10W 0603 Chip Resistor Equivalent & Substitute Parts
Part Overview
The RC1608F751CS is a 750 Ohm ±1% thick film chip resistor manufactured by Samsung Electro-Mechanics in 0603 (1608 Metric) package format. This component is rated for 0.1W (1/10W) power dissipation with a temperature coefficient of ±100ppm/°C and operates across the -55°C to 155°C temperature range. The part is ROHS3 compliant, moisture resistant, and classified as MSL 1 (Unlimited moisture sensitivity level). The RC1608F751CS maintains Active product status with 645 pieces currently in stock. Equivalent and substitute parts are necessary when the primary part becomes unavailable, when alternative packaging formats are required, or when enhanced specifications such as automotive qualification are needed for specific applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 750 Ohms |
| Tolerance | ±1% |
| Power Rating | 0.1W (1/10W) |
| Package / Case | 0603 (1608 Metric) |
| Composition | Thick Film |
| Temperature Coefficient | ±100ppm/°C |
| Operating Temperature Range | -55°C to 155°C |
| Moisture Resistance | Yes |
| RoHS Status | ROHS3 Compliant |
| MSL Rating | 1 (Unlimited) |
| Number of Terminations | 2 |
Substitute Part Grouping Explanation
Substitution eligibility for the RC1608F751CS is determined by strict equivalence across the following critical parameters: resistance value (750 Ohms), tolerance (±1%), power rating (0.1W), package format (0603 / 1608 Metric), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). All substitute parts listed maintain identical electrical specifications and physical dimensions within the 0603 package standard. Moisture resistance and MSL 1 rating are preserved across all substitutes. Packaging format variations (Tape & Reel vs. Cut Tape) do not affect electrical equivalence but may impact procurement and assembly workflows. Some substitute parts include additional certifications such as AEC-Q200 automotive qualification, which represents an enhancement rather than a deviation from the base specification. RoHS compliance status is noted where variations exist, as this affects regulatory acceptability in specific markets and applications.
Parameter Comparison
| Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff | Op Temp Range | Composition | RoHS Status | Packaging Format | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|---|
| RC1608F751CS | Samsung Electro-Mechanics | 750 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | ROHS3 | Tape & Reel | Active |
| CR0603-FX-7500ELF | Bourns Inc. | 750 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | ROHS3 | Tape & Reel | Active |
| RC0603FR-07750RL | YAGEO | 750 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | ROHS3 | Cut Tape & Digi-Reel | Active |
| AC0603FR-07750RL | YAGEO | 750 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | ROHS3 | Cut Tape & Digi-Reel | Active |
| AF0603FR-07750RL | YAGEO | 750 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | ROHS3 | Tape & Reel | Active |
| CRCW0603750RFKEA | Vishay Dale | 750 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | ROHS3 | Cut Tape & Digi-Reel | Active |
| CRCW0603750RFKEB | Vishay Dale | 750 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | ROHS3 | Tape & Reel | Discontinued |
| CRCW0603750RFKTA | Vishay Dale | 750 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | RoHS Non-compliant | Tape & Reel | Active |
| ERJ-3EKF7500V | Panasonic Electronic Components | 750 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | ROHS3 | Tape & Reel | Active |
| RMCF0603FG750R | Stackpole Electronics Inc | 750 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | ROHS3 | Tape & Reel | Active |
| RMCF0603FT750R | Stackpole Electronics Inc | 750 Ω | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Thick Film | ROHS3 | Tape & Reel | Active |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility)
CR0603-FX-7500ELF (Bourns Inc.) and RC0603FR-07750RL (YAGEO) are direct electrical and mechanical equivalents to the RC1608F751CS. Both maintain ROHS3 compliance, identical electrical specifications, and active product status. CR0603-FX-7500ELF offers the highest inventory availability (115,897 pieces) and is packaged in Tape & Reel format matching the original part. RC0603FR-07750RL provides equivalent performance with significantly higher stock levels (1,000,300 pieces) and is available in Cut Tape & Digi-Reel packaging.
Automotive-Qualified Alternatives
AC0603FR-07750RL, AF0603FR-07750RL, CRCW0603750RFKEA, ERJ-3EKF7500V, RMCF0603FG750R, and RMCF0603FT750R all carry AEC-Q200 automotive qualification. These parts are electrically and mechanically equivalent to the RC1608F751CS and are suitable for applications requiring automotive-grade components. AF0603FR-07750RL adds anti-sulfur protection. All automotive-qualified options maintain ROHS3 compliance and active product status, with inventory levels ranging from 10,873 to 1,000,400 pieces.
Compliance Considerations
CRCW0603750RFKTA is marked as RoHS non-compliant and REACH affected, restricting its use in applications subject to EU regulatory requirements. CRCW0603750RFKEB is discontinued at DiGi Electronics, limiting long-term availability. These parts should be avoided for new designs unless legacy system maintenance is the specific requirement.
Packaging Format Selection
Tape & Reel packaging (CR0603-FX-7500ELF, AF0603FR-07750RL, ERJ-3EKF7500V, RMCF0603FG750R, RMCF0603FT750R) matches the original RC1608F751CS format. Cut Tape & Digi-Reel packaging (RC0603FR-07750RL, CRCW0603750RFKEA) offers alternative procurement options suitable for lower-volume or mixed-component orders.
Frequently Asked Questions (FAQ)
Q: Can I substitute RC1608F751CS with any of the listed parts without circuit redesign?
A: Yes. All listed substitute parts maintain identical electrical specifications (750 Ohms ±1%, 0.1W, ±100ppm/°C, -55°C to 155°C) and are packaged in the same 0603 (1608 Metric) format. Physical dimensions and termination count are equivalent, allowing direct PCB footprint compatibility. No circuit redesign is required.
Q: What is the difference between the standard RC0603FR-07750RL and the automotive-qualified AC0603FR-07750RL?
A: Both parts are electrically and mechanically identical with 750 Ohms ±1% resistance and 0.1W power rating. AC0603FR-07750RL carries AEC-Q200 automotive qualification, indicating compliance with automotive reliability and testing standards. This qualification is required for automotive applications but is not necessary for general industrial or consumer electronics. The standard RC0603FR-07750RL is suitable for non-automotive applications.
Q: Does packaging format (Tape & Reel vs. Cut Tape & Digi-Reel) affect electrical performance?
A: No. Packaging format affects only procurement, storage, and assembly logistics. Electrical and mechanical specifications remain identical regardless of packaging. Tape & Reel is optimized for high-volume automated assembly, while Cut Tape & Digi-Reel accommodates lower-volume or mixed-component orders. Select based on production volume and assembly equipment compatibility.
Q: Why is CRCW0603750RFKTA listed if it is RoHS non-compliant?
A: CRCW0603750RFKTA is included for reference in legacy system maintenance scenarios where existing designs may already incorporate this part. For new designs, ROHS3-compliant alternatives such as CRCW0603750RFKEA or CRCW0603750RFKEB are required to meet current regulatory standards in most markets.
Q: Which substitute offers the best inventory availability?
A: RC0603FR-07750RL (YAGEO) provides the highest inventory level at 1,000,300 pieces. CRCW0603750RFKEA (Vishay Dale) offers 1,000,400 pieces. Both are suitable for immediate procurement and long-term supply chain stability.
Q: Are all substitutes moisture resistant like the original RC1608F751CS?
A: Yes. All listed substitute parts include moisture-resistant thick film construction and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental protection specifications.
Q: Can I use ERJ-3EKF7500V as a drop-in replacement for RC1608F751CS?
A: Yes. ERJ-3EKF7500V (Panasonic Electronic Components) is a direct electrical and mechanical equivalent with identical 750 Ohm ±1% specifications, 0.1W power rating, 0603 package format, and ROHS3 compliance. It includes AEC-Q200 automotive qualification, making it suitable for both general and automotive applications. Inventory availability is 171,593 pieces.
Q: What is the temperature coefficient, and why does it matter?
A: The temperature coefficient of ±100ppm/°C indicates the maximum resistance change per degree Celsius across the operating temperature range. All listed parts maintain this specification, ensuring consistent performance across -55°C to 155°C. This parameter is critical for precision analog circuits and temperature-sensitive applications.
Q: Is there a performance difference between Bourns CR0603-FX-7500ELF and Samsung RC1608F751CS?
A: No performance difference exists. Both parts are electrically and mechanically equivalent with 750 Ohms ±1%, 0.1W power rating, ±100ppm/°C temperature coefficient, and identical operating temperature range. The CR0603-FX-7500ELF is manufactured by Bourns Inc. instead of Samsung Electro-Mechanics but meets all functional requirements for direct substitution.
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