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RMC1/8-1504FTP Equivalent & Substitute Parts
Part Overview
The RMC1/8-1504FTP is a 1.5 MOhms ±1% 0.25W thick film chip resistor in 1206 (3216 Metric) package manufactured by Kamaya Inc. This component is classified as Active product status with 941 pieces in current inventory. The RMC series represents a standard general-purpose resistor suitable for industrial and commercial applications. Substitute parts are necessary when the primary manufacturer part becomes unavailable, when alternative packaging formats are required, or when design specifications call for enhanced features such as automotive qualification or improved temperature coefficients.
Substiute Parts
Key Parameters
| Parameter | Value | Specification Basis |
|---|---|---|
| Resistance Value | 1.5 MOhms | Core electrical specification |
| Tolerance | ±1% | Precision requirement |
| Power Rating | 0.25W (1/4W) | Thermal dissipation capability |
| Package / Case | 1206 (3216 Metric) | Physical form factor |
| Composition | Thick Film | Manufacturing technology |
| Operating Temperature Range | -55°C ~ 155°C | Environmental operating limits |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | Handling and storage requirement |
Substitute Part Grouping Explanation
Substitution eligibility for the RMC1/8-1504FTP is determined by strict equivalence across the following mandatory parameters:
Electrical Parameters (Non-negotiable):
- Resistance: 1.5 MOhms
- Tolerance: ±1%
- Power Rating: 0.25W (1/4W)
- Composition: Thick Film
Physical Parameters (Non-negotiable):
- Package / Case: 1206 (3216 Metric)
- Number of Terminations: 2
Environmental Parameters (Non-negotiable):
- Operating Temperature Range: -55°C ~ 155°C minimum
- Moisture Sensitivity Level: 1 (Unlimited)
Acceptable Variations:
- Temperature Coefficient: ±100ppm/°C to ±200ppm/°C (both acceptable)
- Packaging Format: Tape & Reel (TR) or Cut Tape (CT) & Digi-Reel® (interchangeable in most applications)
- Regulatory Compliance: RoHS3 Compliant or REACH Unaffected (both acceptable)
- Product Status: Active or Discontinued at DiGi Electronics (both functionally equivalent)
- Features: Automotive AEC-Q200 or Moisture Resistant (optional enhancements)
Physical Dimension Tolerance:
- Length: 0.120" to 0.126" (3.05mm to 3.20mm)
- Width: 0.061" to 0.063" (1.55mm to 1.60mm)
- Height (Seated Max): 0.025" to 0.028" (0.65mm to 0.70mm)
All substitute parts listed meet these criteria and are electrically and mechanically interchangeable with the RMC1/8-1504FTP.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (Watts) | Composition | Temp Coeff (ppm/°C) | Operating Temp (°C) | Package | Packaging Format | Product Status | Features |
|---|---|---|---|---|---|---|---|---|---|---|---|
| RMC1/8-1504FTP | Kamaya Inc. | 1.5 MOhms | ±1% | 0.25W | Thick Film | ±200 | -55 ~ 155 | 1206 | Tape & Reel (TR) | Active | — |
| MCR18ERTF1504 | Rohm Semiconductor | 1.5 MOhms | ±1% | 0.25W | Thick Film | ±100 | -55 ~ 155 | 1206 | Cut Tape (CT) & Digi-Reel® | Discontinued at DiGi Electronics | — |
| RMCF1206FT1M50 | Stackpole Electronics Inc | 1.5 MOhms | ±1% | 0.25W | Thick Film | ±200 | -55 ~ 155 | 1206 | Tape & Reel (TR) | Active | Automotive AEC-Q200 |
| CRG1206F1M5 | TE Connectivity Passive Product | 1.5 MOhms | ±1% | 0.25W | Thick Film | ±100 | -55 ~ 155 | 1206 | Tape & Reel (TR) | Active | — |
| ERJ-8ENF1504V | Panasonic Electronic Components | 1.5 MOhms | ±1% | 0.25W | Thick Film | ±100 | -55 ~ 155 | 1206 | Tape & Reel (TR) | Not For New Designs | Automotive AEC-Q200 |
| KTR18EZPF1504 | Rohm Semiconductor | 1.5 MOhms | ±1% | 0.25W | Thick Film | ±100 | -55 ~ 155 | 1206 | Tape & Reel (TR) | Active | Automotive AEC-Q200, High Voltage |
| RC1206FR-071M5L | YAGEO | 1.5 MOhms | ±1% | 0.25W | Thick Film | ±100 | -55 ~ 155 | 1206 | Cut Tape (CT) & Digi-Reel® | Active | Moisture Resistant |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
RMCF1206FT1M50 (Stackpole Electronics Inc) is the preferred direct substitute. This part maintains Active product status, identical temperature coefficient specification (±200ppm/°C), and includes Automotive AEC-Q200 qualification. The Tape & Reel packaging format matches the original specification. This part has the highest inventory availability (74,753 pieces) and is suitable for both general-purpose and automotive applications.
CRG1206F1M5 (TE Connectivity Passive Product) serves as an alternative with Active status and improved temperature coefficient (±100ppm/°C). This part is suitable for applications requiring tighter thermal stability. Inventory is limited (938 pieces).
Secondary Substitutes (Acceptable with Considerations):
KTR18EZPF1504 (Rohm Semiconductor) is Active and includes both Automotive AEC-Q200 and High Voltage features. Temperature coefficient is ±100ppm/°C. This part is appropriate for automotive or high-voltage circuit applications. Inventory is substantial (71,560 pieces).
RC1206FR-071M5L (YAGEO) is Active with Moisture Resistant feature and ±100ppm/°C temperature coefficient. This part is suitable for applications in humid environments. Inventory is adequate (12,000 pieces).
Not Recommended for New Designs:
ERJ-8ENF1504V (Panasonic Electronic Components) carries "Not For New Designs" status despite Active inventory (19,648 pieces). This designation indicates the manufacturer is phasing out this product line. Use only for replacement or maintenance of existing assemblies.
MCR18ERTF1504 (Rohm Semiconductor) is Discontinued at DiGi Electronics. While inventory exists (4,076 pieces), this part should be avoided for new designs due to discontinued status.
Frequently Asked Questions (FAQ)
Q: Can I substitute RMC1/8-1504FTP with any 1.5 MOhm resistor in 1206 package?
A: No. Substitution requires exact equivalence across all mandatory parameters: 1.5 MOhms resistance, ±1% tolerance, 0.25W power rating, thick film composition, 1206 package, 2 terminations, -55°C to 155°C operating range, and MSL 1. Additional parameters such as temperature coefficient, packaging format, and features may vary within acceptable ranges but must not compromise circuit performance.
Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) & Digi-Reel® packaging?
A: Both packaging formats contain identical components. Tape & Reel is supplied on continuous tape suitable for automated pick-and-place equipment. Cut Tape & Digi-Reel® is supplied in shorter tape segments on plastic reels, suitable for lower-volume assembly or manual placement. Selection depends on assembly process requirements, not component performance.
Q: Why do some substitutes have ±100ppm/°C temperature coefficient while the original has ±200ppm/°C?
A: Temperature coefficient indicates how resistance changes with temperature. ±100ppm/°C represents tighter thermal stability than ±200ppm/°C. Parts with ±100ppm/°C are acceptable substitutes because they meet or exceed the original specification. Selection should be based on circuit requirements; if thermal stability is critical, choose ±100ppm/°C variants.
Q: Can I use ERJ-8ENF1504V or MCR18ERTF1504 for new product designs?
A: ERJ-8ENF1504V carries "Not For New Designs" status and MCR18ERTF1504 is Discontinued at DiGi Electronics. Both are electrically equivalent but should be used only for replacement or maintenance of existing assemblies. For new designs, select from Active status parts: RMCF1206FT1M50, CRG1206F1M5, KTR18EZPF1504, or RC1206FR-071M5L.
Q: What does Automotive AEC-Q200 qualification mean?
A: AEC-Q200 is an automotive industry standard qualification indicating the component meets stringent reliability, temperature cycling, and performance requirements for automotive applications. Parts with this qualification (RMCF1206FT1M50, ERJ-8ENF1504V, KTR18EZPF1504) are suitable for automotive circuits. Parts without this qualification are suitable for general industrial and commercial applications.
Q: Are there physical dimension differences between substitute parts?
A: Yes. Length ranges from 0.120" to 0.126" (3.05mm to 3.20mm), width from 0.061" to 0.063" (1.55mm to 1.60mm), and height from 0.025" to 0.028" (0.65mm to 0.70mm). These variations are within standard 1206 package tolerances and do not affect electrical performance or PCB compatibility. Verify PCB footprint design accommodates the maximum dimensions of the selected substitute.
Q: Which substitute has the best inventory availability?
A: RMCF1206FT1M50 (Stackpole Electronics Inc) has the highest inventory with 74,753 pieces in stock, followed by KTR18EZPF1504 (Rohm Semiconductor) with 71,560 pieces. Both are Active products suitable for immediate procurement.
Q: What does REACH Unaffected or Vendor Undefined mean?
A: REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) is a European Union regulation. "REACH Unaffected" indicates the component is not subject to REACH restrictions. "Vendor Undefined" indicates the manufacturer has not provided REACH status information. Both designations are acceptable for component selection; verify with your supply chain if REACH compliance documentation is required for your application.
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