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RN732ATTD4020B10 Equivalent & Substitute Parts
Part Overview
The RN732ATTD4020B10 is a 402 Ohm ±0.1% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.1W (1/10W) in 0805 (2012 Metric) package format. This component features moisture-resistant construction with a temperature coefficient of ±10ppm/°C and operates across -55°C to 155°C. The part is currently classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 402 Ohms |
| Tolerance | ±0.1% |
| Power Rating | 0.1W (1/10W) |
| Package / Case | 0805 (2012 Metric) |
| Composition | Thin Film |
| Temperature Coefficient | ±10ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| Moisture Sensitivity Level | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the RN732ATTD4020B10 is determined by the following critical parameters:
Primary Substitution Criteria:
- Resistance value: 402 Ohms (exact match required)
- Tolerance: ±0.1% (exact match required)
- Package: 0805 (2012 Metric) (exact match required)
- Composition: Thin Film (exact match required)
- Temperature Coefficient: ±10ppm/°C (exact match required)
- Operating Temperature Range: -55°C ~ 155°C (exact match required)
- Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
- RoHS Compliance: ROHS3 Compliant (exact match required)
Secondary Consideration:
- Power Rating: Substitutes rated at 0.125W (1/8W) or higher are functionally compatible with applications requiring 0.1W (1/10W), provided all other parameters match
Substitute parts are grouped into two categories: direct equivalents (matching all primary criteria including 0.1W power rating) and upgraded alternatives (matching all primary criteria with enhanced power rating of 0.125W or additional certifications such as AEC-Q200 automotive qualification or anti-sulfur features).
Parameter Comparison
| Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Package | Composition | Temp Coeff | Op Temp Range | MSL | RoHS | Status | Packaging Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| RN732ATTD4020B10 | KOA Speer | 402 Ω | ±0.1% | 0.1 | 0805 | Thin Film | ±10ppm/°C | -55~155°C | 1 | ROHS3 | Obsolete | Bulk |
| RN73R2ATTD4020B10 | KOA Speer | 402 Ω | ±0.1% | 0.125 | 0805 | Thin Film | ±10ppm/°C | -55~155°C | 1 | ROHS3 | Active | Tape & Reel |
| RN73C2A402RBTD | TE Connectivity | 402 Ω | ±0.1% | 0.1 | 0805 | Thin Film | ±10ppm/°C | -55~155°C | 1 | ROHS3 | Active | Tape & Reel |
| RN73C2A402RBTDF | TE Connectivity | 402 Ω | ±0.1% | 0.1 | 0805 | Thin Film | ±10ppm/°C | -55~155°C | 1 | ROHS3 | Active | Tape & Reel |
| RN73C2A402RBTG | TE Connectivity | 402 Ω | ±0.1% | 0.1 | 0805 | Thin Film | ±10ppm/°C | -55~155°C | 1 | ROHS3 | Active | Strip |
| RNCF0805BKT402R | Stackpole Electronics | 402 Ω | ±0.1% | 0.125 | 0805 | Thin Film | ±10ppm/°C | -55~155°C | 1 | ROHS3 | Active | Tape & Reel |
| RNCF0805BTT402R | Stackpole Electronics | 402 Ω | ±0.1% | 0.125 | 0805 | Thin Film | ±10ppm/°C | -55~155°C | 1 | ROHS3 | Active | Tape & Reel |
| RT0805BRB07402RL | YAGEO | 402 Ω | ±0.1% | 0.125 | 0805 | Thin Film | ±10ppm/°C | -55~155°C | 1 | ROHS3 | Active | Tape & Reel |
| RG2012N-4020-B-T5 | Susumu | 402 Ω | ±0.1% | 0.125 | 0805 | Thin Film | ±10ppm/°C | -55~155°C | 1 | ROHS3 | Active | Tape & Reel |
| RG2012N-4020-W-T1 | Susumu | 402 Ω | ±0.05% | 0.125 | 0805 | Thin Film | ±10ppm/°C | -55~155°C | 1 | ROHS3 | Active | Tape & Reel |
| RG2012N-4020-W-T5 | Susumu | 402 Ω | ±0.05% | 0.125 | 0805 | Thin Film | ±10ppm/°C | -55~155°C | 1 | ROHS3 | Active | Tape & Reel |
Engineering Selection Recommendations
Direct Equivalents (Recommended Primary Substitutes):
The TE Connectivity RN73C2A402RBTD and RN73C2A402RBTDF are direct functional equivalents to the RN732ATTD4020B10. Both components match all primary electrical and mechanical specifications, including 0.1W power rating, ±0.1% tolerance, and identical operating temperature range. Both parts are in active production status with ROHS3 compliance. RN73C2A402RBTD is available in Tape & Reel packaging with 3,991 units in stock, while RN73C2A402RBTDF is also Tape & Reel packaged with 4,104 units in stock. The RN73C2A402RBTG variant offers the same electrical specifications in Strip packaging format with 1,091 units available.
Upgraded Alternatives with Enhanced Power Rating:
The KOA Speer RN73R2ATTD4020B10 provides an active-status upgrade with 0.125W (1/8W) power rating while maintaining all other specifications including ±0.1% tolerance and identical temperature characteristics. This part is suitable for applications where increased power dissipation margin is beneficial. The Stackpole RNCF0805BKT402R and RNCF0805BTT402R, as well as the YAGEO RT0805BRB07402RL, offer equivalent 0.125W power ratings with active production status and full ROHS3 compliance.
Upgraded Alternatives with Enhanced Tolerance and Features:
The Susumu RG2012N-4020-W-T1 and RG2012N-4020-W-T5 provide superior ±0.05% tolerance (tighter than the original ±0.1%), 0.125W power rating, and anti-sulfur features with AEC-Q200 automotive qualification. The RG2012N-4020-B-T5 offers ±0.1% tolerance matching the original specification with anti-sulfur and AEC-Q200 features. All Susumu variants feature reduced height (0.020" seated maximum) compared to the original 0.024" specification.
Selection Criteria:
- For direct replacement without design modification: Select RN73C2A402RBTD or RN73C2A402RBTDF
- For applications requiring automotive qualification: Select RNCF0805BTT402R, RG2012N-4020-B-T5, or Susumu RG series
- For applications requiring tighter tolerance: Select RG2012N-4020-W-T1 or RG2012N-4020-W-T5
- For applications with higher power dissipation requirements: Select any 0.125W rated alternative
All substitute parts maintain ROHS3 compliance, MSL Level 1 (Unlimited), and identical temperature coefficient specifications.
Frequently Asked Questions (FAQ)
Q: Can I use a 0.125W (1/8W) rated resistor in place of the 0.1W (1/10W) RN732ATTD4020B10?
A: Yes. A higher power rating provides additional thermal margin and is functionally compatible. The 0.125W rated alternatives (RN73R2ATTD4020B10, RNCF0805BTT402R, RT0805BRB07402RL, and Susumu RG series) are direct substitutes when all other electrical parameters match.
Q: What is the difference between the TE Connectivity RN73C2A402RBTD and RN73C2A402RBTDF variants?
A: Both parts are electrically and mechanically identical with matching specifications. The difference is in packaging format designation. Both are available in Tape & Reel format and are interchangeable for component selection purposes.
Q: Are the Susumu RG2012N-4020-W-T1 and RG2012N-4020-W-T5 parts interchangeable?
A: Both parts feature ±0.05% tolerance, 0.125W power rating, anti-sulfur construction, and AEC-Q200 qualification. The primary difference is the tape reel configuration (T1 versus T5 designations). They are electrically and mechanically equivalent for circuit design purposes.
Q: Why do some substitute parts have tighter tolerance (±0.05%) than the original (±0.1%)?
A: Tighter tolerance specifications represent enhanced precision. The Susumu RG2012N-4020-W-T1 and RG2012N-4020-W-T5 offer ±0.05% tolerance as an upgraded feature. These parts are suitable for applications where the original ±0.1% tolerance is acceptable, as tighter tolerance is a superset of the original requirement.
Q: What does AEC-Q200 qualification mean?
A: AEC-Q200 is an automotive industry standard qualification for passive components. Parts bearing this rating (RN73R2ATTD4020B10, RNCF0805BKT402R, RNCF0805BTT402R, and Susumu RG series) have undergone additional reliability testing and are suitable for automotive applications. Non-automotive applications can also use AEC-Q200 qualified parts without restriction.
Q: What is the significance of anti-sulfur features in the Susumu RG series?
A: Anti-sulfur construction protects the component from corrosion in high-sulfur environments. This feature is present in RG2012N-4020-B-T5, RG2012N-4020-W-T1, and RG2012N-4020-W-T5. Applications not exposed to sulfur-containing atmospheres do not require this feature.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance status, matching the original RN732ATTD4020B10 specification.
Q: What is Moisture Sensitivity Level (MSL) 1?
A: MSL 1 indicates unlimited shelf life without moisture baking requirements. All listed parts, including the original and all substitutes, carry MSL 1 rating, meaning they can be stored and handled without special moisture control procedures.
Q: Can I substitute the RN732ATTD4020B10 with a different resistance value?
A: No. Substitution requires exact resistance matching at 402 Ohms. Different resistance values are not compatible and would alter circuit function.
Q: What packaging options are available for the substitute parts?
A: Substitute parts are available in three packaging formats: Tape & Reel (TR) for automated assembly, Strip for manual handling, and Bulk for the original part. The TE Connectivity RN73C2A402RBTG is available in Strip format, while most other substitutes are Tape & Reel packaged.
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