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RN732ATTD73R2F25 Equivalent & Substitute Parts
Part Overview
The RN732ATTD73R2F25 is a 73.2 Ohms ±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 ±25ppm/°C and operates across -55°C to 155°C. The part is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design requirements and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Resistance | 73.2 Ohms |
| Tolerance | ±1% |
| Power Rating | 0.1W (1/10W) |
| Package / Case | 0805 (2012 Metric) |
| Composition | Thin Film |
| Temperature Coefficient | ±25ppm/°C |
| Operating Temperature Range | -55°C ~ 155°C |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| RoHS Status | ROHS3 Compliant |
| Product Status | Obsolete |
Substitute Part Grouping Explanation
Substitution of the RN732ATTD73R2F25 is determined by strict adherence to the following electrical and mechanical parameters:
Critical Parameters (Must Match):
- Resistance value: 73.2 Ohms
- Package / Case: 0805 (2012 Metric)
- Composition: Thin Film
- Temperature Coefficient: ±25ppm/°C
- Operating Temperature Range: -55°C ~ 155°C
- Moisture Sensitivity Level: 1 (Unlimited)
Allowable Variations:
- Tolerance: May be equal to or tighter than ±1% (±1%, ±0.5%, ±0.1% are acceptable)
- Power Rating: May be equal to or greater than 0.1W (0.1W, 0.125W, 0.2W, 0.25W are acceptable)
- Features: Additional features such as Automotive AEC-Q200, Anti-Sulfur, or Moisture Resistant are acceptable enhancements
- Product Status: Active status preferred over obsolete
Substitute parts are grouped into two categories: Direct Substitutes (matching tolerance and power rating) and Upgrade Substitutes (improved tolerance and/or power rating).
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Resistance | Tolerance | Power (W) | Composition | Temp Coeff (ppm/°C) | Temp Range (°C) | Package | Product Status | RoHS |
|---|---|---|---|---|---|---|---|---|---|---|
| RN732ATTD73R2F25 | KOA Speer Electronics | 73.2 Ω | ±1% | 0.1 | Thin Film | ±25 | -55 ~ 155 | 0805 | Obsolete | ROHS3 |
| RN73R2ATTD73R2F25 | KOA Speer Electronics | 73.2 Ω | ±1% | 0.125 | Thin Film | ±25 | -55 ~ 155 | 0805 | Active | ROHS3 |
| RT0805FRD0773R2L | YAGEO | 73.2 Ω | ±1% | 0.125 | Thin Film | ±25 | -55 ~ 155 | 0805 | Active | ROHS3 |
| 1-2176091-1 | TE Connectivity Passive Product | 73.2 Ω | ±0.1% | 0.25 | Thin Film | ±25 | -55 ~ 155 | 0805 | Active | ROHS3 |
| AT0805BRD0773R2L | YAGEO | 73.2 Ω | ±0.1% | 0.125 | Thin Film | ±25 | -55 ~ 155 | 0805 | Active | ROHS3 |
| AT0805DRD0773R2L | YAGEO | 73.2 Ω | ±0.5% | 0.125 | Thin Film | ±25 | -55 ~ 155 | 0805 | Active | ROHS3 |
| CPF0805B73R2E1 | TE Connectivity Passive Product | 73.2 Ω | ±0.1% | 0.1 | Thin Film | ±25 | -55 ~ 155 | 0805 | Active | RoHS non-compliant |
| ERA-6AEB73R2V | Panasonic Electronic Components | 73.2 Ω | ±0.1% | 0.125 | Thin Film | ±25 | -55 ~ 155 | 0805 | Active | ROHS3 |
| MCU08050D7329BP100 | Vishay Beyschlag/Draloric/BC Components | 73.2 Ω | ±0.1% | 0.125 | Thin Film | ±25 | -55 ~ 125 | 0805 | Active | ROHS3 |
| PAT0805E73R2BST1 | Vishay Dale Thin Film | 73.2 Ω | ±0.1% | 0.2 | Thin Film | ±25 | -55 ~ 155 | 0805 | Active | ROHS3 |
Engineering Selection Recommendations
Direct Substitutes (Equivalent Tolerance & Power Rating):
RN73R2ATTD73R2F25 and RT0805FRD0773R2L are direct substitutes with matching ±1% tolerance and 0.125W power rating. Both are active products with ROHS3 compliance. RN73R2ATTD73R2F25 includes Automotive AEC-Q200 qualification and moisture-resistant features. RT0805FRD0773R2L is a YAGEO alternative with identical electrical specifications.
Upgrade Substitutes (Improved Tolerance and/or Power Rating):
AT0805BRD0773R2L, ERA-6AEB73R2V, MCU08050D7329BP100, and PAT0805E73R2BST1 offer ±0.1% tolerance with 0.125W or higher power ratings. These components provide enhanced precision and thermal performance. AT0805BRD0773R2L and PAT0805E73R2BST1 include Automotive AEC-Q200 qualification. 1-2176091-1 provides the highest power rating at 0.25W with ±0.1% tolerance.
Compliance Considerations:
All recommended substitutes maintain ROHS3 compliance except CPF0805B73R2E1, which is RoHS non-compliant and should be avoided for new designs requiring regulatory compliance. MCU08050D7329BP100 operates to -55°C ~ 125°C, which is narrower than the original -55°C ~ 155°C range and requires verification for applications requiring the full temperature range.
Frequently Asked Questions (FAQ)
Q: Can I use a substitute with tighter tolerance than ±1%?
A: Yes. Tighter tolerance specifications (±0.5%, ±0.1%) are acceptable substitutes as they provide equal or superior performance. The circuit design must accommodate the improved tolerance without adverse effects.
Q: Are higher power-rated substitutes compatible?
A: Yes. Substitutes with power ratings of 0.125W, 0.2W, or 0.25W are compatible with the original 0.1W specification. Higher power ratings provide additional thermal margin and do not degrade circuit performance.
Q: What is the significance of Automotive AEC-Q200 qualification?
A: AEC-Q200 qualification indicates the component meets automotive industry reliability and quality standards. This certification is optional for general applications but required for automotive designs. Substitutes with AEC-Q200 are suitable for both automotive and non-automotive applications.
Q: Can I substitute with a different package size?
A: No. The 0805 (2012 Metric) package is mandatory. Substitutes must maintain identical package dimensions and termination configuration for PCB compatibility.
Q: Is the temperature coefficient critical for substitution?
A: Yes. All qualified substitutes maintain ±25ppm/°C temperature coefficient matching the original specification. This parameter is non-negotiable for circuit stability and accuracy.
Q: What is the difference between Direct and Upgrade substitutes?
A: Direct substitutes match the original tolerance (±1%) and power rating (0.1W). Upgrade substitutes offer improved tolerance (±0.1% or ±0.5%) and/or higher power ratings (0.125W or greater). Upgrade substitutes are backward-compatible and provide enhanced performance.
Q: Why is CPF0805B73R2E1 not recommended?
A: CPF0805B73R2E1 is RoHS non-compliant, making it unsuitable for designs requiring regulatory compliance with ROHS3 standards. All other substitutes maintain full ROHS3 compliance.
Q: Does operating temperature range affect substitution?
A: The original part operates -55°C ~ 155°C. MCU08050D7329BP100 operates -55°C ~ 125°C, which is narrower. Verify application requirements before selecting this substitute if operation above 125°C is required.
Q: Are all substitutes available in Tape & Reel packaging?
A: Yes. All listed substitutes are available in Tape & Reel (TR) packaging suitable for automated assembly processes.
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