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RG2012P-432-B-T1 Equivalent & Substitute Parts
Part Overview
The RG2012P-432-B-T1 is a 4.3 kOhms ±0.1% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. Manufactured by Susumu, this component features anti-sulfur coating and automotive AEC-Q200 qualification, suitable for high-reliability applications in temperature ranges from -55°C to 155°C. The part is currently listed as obsolete with limited inventory (787 pcs). Equivalent and substitute parts are necessary to ensure design continuity and maintain supply chain availability for applications requiring this resistance value and performance specification.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 4.3 kOhms |
| Tolerance | ±0.1% |
| Power Rating | 0.125W (1/8W) |
| Package | 0805 (2012 Metric) |
| Composition | Thin Film |
| Temperature Coefficient | ±25ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| Features | Anti-Sulfur, Automotive AEC-Q200 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the RG2012P-432-B-T1 is determined by the following critical parameters:
Mandatory Matching Parameters:
- Resistance value: 4.3 kOhms
- Package type: 0805 (2012 Metric)
- Power rating: 0.125W (1/8W)
- Composition: Thin Film
- Operating temperature range: -55°C to 155°C minimum
Allowable Variation Parameters:
- Tolerance: Can be equal or tighter (±0.1%, ±0.05%, ±0.02%)
- Temperature coefficient: Can be equal or lower (±25ppm/°C, ±10ppm/°C, ±5ppm/°C)
- Automotive qualification: AEC-Q200 required for direct substitution
- Anti-sulfur feature: Present in primary substitutes; absence does not prevent substitution if other parameters match
Substitute parts are grouped into direct replacements (identical specifications) and upgrades (improved tolerance or temperature coefficient performance while maintaining all mandatory parameters).
Parameter Comparison
| Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Temp Coeff (ppm/°C) | Operating Temp (°C) | AEC-Q200 | Anti-Sulfur | Status |
|---|---|---|---|---|---|---|---|---|---|
| RG2012P-432-B-T1 | Susumu | 4.3k | ±0.1% | 0.125 | ±25 | -55 ~ 155 | Yes | Yes | Obsolete |
| RG2012P-432-B-T5 | Susumu | 4.3k | ±0.1% | 0.125 | ±25 | -55 ~ 155 | Yes | Yes | Active |
| RG2012N-432-B-T5 | Susumu | 4.3k | ±0.1% | 0.125 | ±10 | -55 ~ 155 | Yes | Yes | Active |
| RG2012N-432-W-T5 | Susumu | 4.3k | ±0.05% | 0.125 | ±10 | -55 ~ 155 | Yes | Yes | Active |
| RG2012P-432-W-T5 | Susumu | 4.3k | ±0.05% | 0.125 | ±25 | -55 ~ 155 | Yes | Yes | Active |
| RG2012V-432-B-T5 | Susumu | 4.3k | ±0.1% | 0.125 | ±5 | -55 ~ 155 | Yes | Yes | Active |
| RG2012V-432-P-T1 | Susumu | 4.3k | ±0.02% | 0.125 | ±5 | -55 ~ 155 | Yes | Yes | Active |
| RG2012V-432-W-T1 | Susumu | 4.3k | ±0.05% | 0.125 | ±5 | -55 ~ 155 | Yes | Yes | Active |
| RG2012V-432-W-T5 | Susumu | 4.3k | ±0.05% | 0.125 | ±5 | -55 ~ 155 | Yes | Yes | Active |
| ERA-6AEB432V | Panasonic | 4.3k | ±0.1% | 0.125 | ±25 | -55 ~ 155 | Yes | No | Active |
| MCU08050D4301BP100 | Vishay | 4.3k | ±0.1% | 0.125 | ±25 | -55 ~ 125 | No | Yes | Active |
Engineering Selection Recommendations
Direct Replacement (Identical Specifications):
RG2012P-432-B-T5 is the direct replacement for RG2012P-432-B-T1. Both parts share identical electrical specifications (4.3 kOhms ±0.1%, ±25ppm/°C) and physical characteristics. The primary difference is packaging format (Tape & Reel vs. bulk) and product status (Active vs. Obsolete). This part maintains full compatibility with the original design.
Upgraded Alternatives (Improved Performance):
Susumu RG series upgrades provide enhanced performance while maintaining full backward compatibility:
- RG2012N-432-B-T5: Improves temperature coefficient to ±10ppm/°C while maintaining ±0.1% tolerance
- RG2012V-432-B-T5: Provides superior temperature coefficient of ±5ppm/°C with ±0.1% tolerance
- RG2012V-432-P-T1: Offers tightest tolerance (±0.02%) with ±5ppm/°C temperature coefficient for precision applications
- RG2012N-432-W-T5 and RG2012P-432-W-T5: Provide ±0.05% tolerance with improved temperature stability
Cross-Manufacturer Alternatives:
ERA-6AEB432V (Panasonic) provides electrical equivalence with ±0.1% tolerance and ±25ppm/°C temperature coefficient. This part is AEC-Q200 qualified and maintains the 0805 package. Inventory availability is significantly higher (35,964 pcs).
MCU08050D4301BP100 (Vishay) matches electrical specifications but operates to 125°C maximum (versus 155°C for the original). This part lacks AEC-Q200 automotive qualification and should be selected only when the reduced temperature range is acceptable for the application.
Frequently Asked Questions (FAQ)
Q: Can RG2012P-432-B-T5 be used as a direct replacement for RG2012P-432-B-T1?
A: Yes. RG2012P-432-B-T5 is electrically and mechanically identical to RG2012P-432-B-T1. The difference is packaging format (Tape & Reel vs. bulk) and product status. Both parts are 4.3 kOhms ±0.1%, 0.125W, 0805 package with ±25ppm/°C temperature coefficient and AEC-Q200 qualification.
Q: What is the difference between the "P," "N," and "V" designations in Susumu RG part numbers?
A: These designations indicate different temperature coefficient specifications. "P" denotes ±25ppm/°C, "N" denotes ±10ppm/°C, and "V" denotes ±5ppm/°C. All other parameters remain consistent within the same resistance and tolerance family.
Q: Can I substitute ERA-6AEB432V for RG2012P-432-B-T1?
A: Yes, with the following considerations. ERA-6AEB432V matches the 4.3 kOhms ±0.1% specification, 0.125W power rating, 0805 package, and ±25ppm/°C temperature coefficient. Both are AEC-Q200 qualified. The Panasonic part lacks anti-sulfur coating but is otherwise electrically equivalent. Inventory availability is substantially higher.
Q: Why does MCU08050D4301BP100 have a lower maximum operating temperature?
A: MCU08050D4301BP100 is rated to -55°C ~ 125°C, while RG2012P-432-B-T1 is rated to -55°C ~ 155°C. This represents a design difference in the Vishay component. Applications requiring operation above 125°C must use alternative parts. Additionally, MCU08050D4301BP100 lacks AEC-Q200 automotive qualification.
Q: What tolerance options are available for 4.3 kOhm 0805 thin film resistors?
A: Available tolerances include ±0.1%, ±0.05%, and ±0.02%. Tighter tolerances (±0.05%, ±0.02%) are available in the Susumu RG series with improved temperature coefficients. Selection depends on circuit accuracy requirements.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, matching the environmental compliance of the original RG2012P-432-B-T1.
Q: What is the significance of the "T1" and "T5" suffixes in Susumu part numbers?
A: These suffixes indicate packaging tape specifications. "T1" and "T5" represent different tape configurations for automated assembly. Both are compatible with standard pick-and-place equipment. Selection depends on assembly line compatibility.
Q: Can I use a higher tolerance part (±0.05% or ±0.02%) in place of ±0.1%?
A: Yes. Tighter tolerance parts are backward compatible with designs specified for ±0.1%. The component will perform within the original tolerance specification while providing additional accuracy margin.
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