Request Quote
(Ships tomorrow)
RG2012N-4991-C-T5 Equivalent & Substitute Parts
Part Overview
The RG2012N-4991-C-T5 is a 4.99 kOhms ±0.25% thin film chip resistor in 0805 (2012 Metric) package rated for 0.125W (1/8W) power dissipation. This component is manufactured by Susumu and features anti-sulfur coating with automotive AEC-Q200 qualification. The part is currently obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility while offering improved performance characteristics or continued availability.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 4.99 kOhms |
| Tolerance | ±0.25% |
| Power Rating | 0.125W (1/8W) |
| Package | 0805 (2012 Metric) |
| Composition | Thin Film |
| Features | Anti-Sulfur, Automotive AEC-Q200 |
| Temperature Coefficient | ±10ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the RG2012N-4991-C-T5 is determined by the following critical parameters:
Mandatory Compatibility Parameters:
- Resistance value: 4.99 kOhms (exact match required)
- Package type: 0805 (2012 Metric) (exact match required)
- Power rating: minimum 0.125W (1/8W)
- Composition: Thin Film
- Automotive qualification: AEC-Q200
- Anti-sulfur coating: Required
Allowable Variation Parameters:
- Tolerance: Can be equal to or tighter than ±0.25%
- Temperature coefficient: Can be equal to or better than ±10ppm/°C
- Operating temperature range: Can be equal to or wider than -55°C ~ 155°C
- Packaging format: Tape & Reel (TR) acceptable for obsolete component replacement
Substitute parts are grouped into two categories: Susumu RG series variants with improved tolerance specifications and alternative manufacturer options that maintain all mandatory compatibility parameters.
Parameter Comparison
| Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Temp Coeff (ppm/°C) | Operating Temp (°C) | Status | Packaging |
|---|---|---|---|---|---|---|---|---|
| RG2012N-4991-C-T5 | Susumu | 4.99 kΩ | ±0.25% | 0.125 | ±10 | -55 ~ 155 | Obsolete | - |
| RG2012N-4991-B-T5 | Susumu | 4.99 kΩ | ±0.1% | 0.125 | ±10 | -55 ~ 155 | Active | TR |
| RG2012N-4991-W-T1 | Susumu | 4.99 kΩ | ±0.05% | 0.125 | ±10 | -55 ~ 155 | Active | TR |
| RG2012N-4991-W-T5 | Susumu | 4.99 kΩ | ±0.05% | 0.125 | ±10 | -55 ~ 155 | Active | TR |
| RG2012V-4991-B-T5 | Susumu | 4.99 kΩ | ±0.1% | 0.125 | ±5 | -55 ~ 155 | Active | TR |
| RG2012V-4991-P-T1 | Susumu | 4.99 kΩ | ±0.02% | 0.125 | ±5 | -55 ~ 155 | Active | TR |
| RG2012V-4991-W-T1 | Susumu | 4.99 kΩ | ±0.05% | 0.125 | ±5 | -55 ~ 155 | Active | TR |
| RG2012V-4991-W-T5 | Susumu | 4.99 kΩ | ±0.05% | 0.125 | ±5 | -55 ~ 155 | Active | TR |
| TNPW08054K99BYEA | Vishay Dale | 4.99 kΩ | ±0.1% | 0.26 | ±10 | -55 ~ 175 | Active | TR |
Engineering Selection Recommendations
Direct Replacement (Susumu RG2012N Series):
The RG2012N-4991-B-T5, RG2012N-4991-W-T1, and RG2012N-4991-W-T5 are direct mechanical and electrical replacements for the obsolete RG2012N-4991-C-T5. All three maintain identical package geometry, power rating, and operating temperature range. These parts offer improved tolerance specifications (±0.1% and ±0.05% respectively) while maintaining the same temperature coefficient and AEC-Q200 automotive qualification. All are active products with confirmed inventory availability.
Enhanced Performance Alternatives (Susumu RG2012V Series):
The RG2012V series variants (RG2012V-4991-B-T5, RG2012V-4991-P-T1, RG2012V-4991-W-T1, and RG2012V-4991-W-T5) provide superior temperature coefficient performance at ±5ppm/°C compared to the original ±10ppm/°C specification. These components are fully compatible with the original package and electrical requirements while offering enhanced stability across the operating temperature range. The RG2012V-4991-P-T1 provides the tightest tolerance at ±0.02%.
Cross-Manufacturer Alternative (Vishay Dale TNPW08054K99BYEA):
The TNPW08054K99BYEA from Vishay Dale provides functional equivalence with identical resistance and tolerance specifications. This component offers increased power dissipation capability (0.26W versus 0.125W) and an extended upper operating temperature limit of 175°C. The part maintains AEC-Q200 automotive qualification and anti-sulfur coating. Selection of this alternative is appropriate when higher power handling or extended temperature operation is required.
All substitute parts are ROHS3 compliant, MSL 1 rated, and maintain the required anti-sulfur and automotive qualification features of the original component.
Frequently Asked Questions (FAQ)
Q: Can RG2012N-4991-B-T5 be used as a direct replacement for RG2012N-4991-C-T5?
A: Yes. The RG2012N-4991-B-T5 is a direct replacement. Both components share identical resistance value (4.99 kOhms), package type (0805), power rating (0.125W), and operating temperature range (-55°C ~ 155°C). The substitute offers improved tolerance (±0.1% versus ±0.25%) and maintains all required automotive and anti-sulfur specifications.
Q: What is the difference between RG2012N and RG2012V series parts?
A: The primary difference is temperature coefficient performance. RG2012N series components have a temperature coefficient of ±10ppm/°C, while RG2012V series components have ±5ppm/°C. Both series maintain identical resistance values, package types, and power ratings. The RG2012V series provides superior temperature stability across the operating range.
Q: Is the TNPW08054K99BYEA from Vishay Dale compatible with the original RG2012N-4991-C-T5?
A: The TNPW08054K99BYEA is mechanically and electrically compatible for the same 4.99 kOhm 0805 package application. The component maintains AEC-Q200 automotive qualification and anti-sulfur coating. The primary differences are increased power rating (0.26W versus 0.125W) and extended upper operating temperature (175°C versus 155°C). These differences represent performance enhancements suitable for applications requiring higher power dissipation or wider temperature operation.
Q: Can I use a substitute part with tighter tolerance than the original specification?
A: Yes. Tighter tolerance specifications (such as ±0.05% or ±0.02%) are acceptable substitutes for the original ±0.25% tolerance. Tighter tolerance represents improved component performance and does not create compatibility issues in circuits designed for the original tolerance specification.
Q: What does the packaging designation "TR" mean?
A: TR designates Tape & Reel packaging format, the standard format for automated assembly processes. The original RG2012N-4991-C-T5 does not specify packaging format, while all active substitute parts are available in Tape & Reel format, which is the industry standard for component distribution and surface mount assembly.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All substitute parts listed are ROHS3 compliant and maintain the same regulatory compliance status as the original component. All parts are also MSL 1 rated (Unlimited moisture sensitivity level) and REACH unaffected.
Q: Which substitute part should I select for maximum temperature stability?
A: The RG2012V-4991-P-T1 provides the best combination of temperature stability (±5ppm/°C temperature coefficient) and tolerance accuracy (±0.02%). This part is recommended for applications requiring the highest precision and temperature performance within the 0805 package format.
Alternative Parts
SJ6012L2TP
Littelfuse Inc.
6 Alternative Parts
JMK107BBJ476MA-RE
Taiyo Yuden
10 Alternative Parts
GMK107BBJ475MA-T
Taiyo Yuden
5 Alternative Parts
SJ6020N2ARP
Littelfuse Inc.
3 Alternative Parts
SJ6025R2ATP
Littelfuse Inc.
4 Alternative Parts
2474-05L
API Delevan Inc.
1 Alternative Parts
4590R-684K
API Delevan Inc.
1 Alternative Parts
CM6560R-334
API Delevan Inc.
1 Alternative Parts
CM6460-104
API Delevan Inc.
1 Alternative Parts
5526-12
API Delevan Inc.
1 Alternative Parts