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RC1608F304CS 300kΩ 0603 Chip Resistor Equivalent & Substitute Parts
Part Overview
The RC1608F304CS is a 300 kΩ ±1% thick film chip resistor in 0603 (1608 Metric) package manufactured by Samsung Electro-Mechanics. This component is rated for 0.1W power dissipation with moisture-resistant construction and operates across -55°C to 155°C. The part maintains Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified based on matching electrical specifications, mechanical dimensions, and packaging compatibility to ensure direct circuit board replacement capability.
Substiute Parts
Key Parameters
| Parameter | Specification |
|---|---|
| Resistance Value | 300 kΩ |
| 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 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the RC1608F304CS is determined by strict equivalence across the following parameters: resistance value (300 kΩ), tolerance (±1%), power rating (0.1W), package type (0603 / 1608 Metric), composition (thick film), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C to 155°C). All identified substitute parts match these core electrical and mechanical specifications. Additional features such as automotive AEC-Q200 qualification or enhanced moisture resistance represent functional enhancements that do not prevent substitution but may provide additional reliability margins for specific applications. Packaging format variations (Tape & Reel versus Cut Tape) do not affect electrical or mechanical compatibility.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Temp Coeff | Op Temp Range | Features | RoHS | MSL |
|---|---|---|---|---|---|---|---|---|---|---|
| RC1608F304CS | Samsung Electro-Mechanics | 300 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Moisture Resistant | ROHS3 | 1 |
| CR0603-FX-3003ELF | Bourns Inc. | 300 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Moisture Resistant | ROHS3 | 1 |
| RC0603FR-07300KL | YAGEO | 300 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Moisture Resistant | ROHS3 | 1 |
| KTR03EZPF3003 | Rohm Semiconductor | 300 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Automotive AEC-Q200, High Voltage | ROHS3 | 1 |
| AC0603FR-07300KL | YAGEO | 300 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Automotive AEC-Q200, Moisture Resistant | ROHS3 | 1 |
| CRCW0603300KFKEA | Vishay Dale | 300 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Automotive AEC-Q200 | ROHS3 | 1 |
| ERJ-3EKF3003V | Panasonic Electronic Components | 300 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Automotive AEC-Q200 | ROHS3 | 1 |
| RMCF0603FT300K | Stackpole Electronics Inc | 300 kΩ | ±1% | 0.1 | 0603 | ±100ppm/°C | -55 to 155°C | Automotive AEC-Q200 | ROHS3 | 1 |
Engineering Selection Recommendations
All listed substitute parts maintain full electrical and mechanical compatibility with the RC1608F304CS across core specifications. Selection between direct equivalents (CR0603-FX-3003ELF, RC0603FR-07300KL) and enhanced variants depends on application requirements. Parts carrying AEC-Q200 automotive qualification (KTR03EZPF3003, AC0603FR-07300KL, CRCW0603300KFKEA, ERJ-3EKF3003V, RMCF0603FT300K) provide additional reliability assurance for automotive and high-reliability applications without compromising standard industrial use. All parts maintain ROHS3 compliance and MSL 1 rating, ensuring compatibility with standard PCB assembly processes. Packaging format selection (Tape & Reel or Cut Tape) should align with production volume and assembly equipment capabilities.
Frequently Asked Questions (FAQ)
Q: Can I substitute RC1608F304CS with any of the listed parts without circuit redesign?
A: Yes. All listed parts match the core electrical specifications (300 kΩ ±1%, 0.1W) and mechanical package (0603), enabling direct board-level substitution without circuit modification.
Q: What is the difference between the base RC1608F304CS and AEC-Q200 qualified alternatives?
A: AEC-Q200 qualification indicates automotive-grade reliability testing and stricter manufacturing controls. These parts are suitable for automotive and high-reliability applications but function identically in standard industrial circuits.
Q: Are there dimensional differences between substitute parts?
A: Nominal dimensions are 0603 (1608 Metric) across all parts. Minor variations exist in seated height (0.020" to 0.022") and length/width tolerances (1.55mm to 1.60mm L, 0.80mm to 0.85mm W), which remain within standard PCB pad design tolerances and do not affect assembly compatibility.
Q: Does packaging format (Tape & Reel vs. Cut Tape) affect electrical performance?
A: No. Packaging format affects only logistics and assembly handling. Electrical and mechanical specifications remain identical regardless of packaging type.
Q: Which substitute offers the best availability?
A: RC0603FR-07300KL (YAGEO) and RMCF0603FT300K (Stackpole Electronics) show the highest inventory levels, providing supply chain flexibility for high-volume production.
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