RN732ATTD1171F50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1171F50 is a 1.17 kOhms ±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 ±50ppm/°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

RN732ATTD1171F50

KOA Speer Electronics, Inc.In Stock: 1102RN732ATTD1171F50 Datasheet

Current PartRFQ

RN73R2ATTD1171F50

KOA Speer Electronics, Inc.In Stock: 1087RN73R2ATTD1171F50 Datasheet

DirectRFQ

PHP00805H1171BBT1

Vishay Dale Thin FilmIn Stock: 961PHP00805H1171BBT1 Datasheet

UpgradeRFQ

PHP00805H1171BST1

Vishay Dale Thin FilmIn Stock: 912PHP00805H1171BST1 Datasheet

UpgradeRFQ

TNPW08051K17BHEA

Vishay DaleIn Stock: 817TNPW08051K17BHEA Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD1171F50 is determined by strict electrical and mechanical compatibility criteria:

Electrical Parameters (Must Match or Exceed):

• Resistance value: 1.17 kOhms (exact match required)
• Tolerance: ±1% or better (tighter tolerance acceptable)
• Power rating: ≥0.1W (equal or higher rating acceptable)
• Temperature coefficient: ±50ppm/°C (matching specification)
• Operating temperature range: Must encompass -55°C ~ 155°C minimum

Mechanical Parameters (Must Match):

• Package / Case: 0805 (2012 Metric) (exact match required)
• Composition: Thin Film (required for performance characteristics)
• Number of Terminations: 2 (exact match required)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant preferred for regulatory alignment
• Moisture Sensitivity Level: 1 (Unlimited) preferred for handling consistency

Substitute parts are grouped into two categories: Direct Equivalent (matching power rating and tolerance) and Upgrade (enhanced tolerance and/or power rating with maintained compatibility).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Substitute:

The RN73R2ATTD1171F50 serves as the direct equivalent to the obsolete RN732ATTD1171F50. Both components share identical electrical specifications (1.17 kOhms ±1%, ±50ppm/°C temperature coefficient, -55°C ~ 155°C operating range) and mechanical form factor (0805 package). The RN73R2ATTD1171F50 offers a marginal power rating increase (0.125W vs. 0.1W), which provides additional thermal margin without altering circuit behavior. This part is manufactured by the same supplier (KOA Speer Electronics, Inc.), maintains ROHS3 compliance, and is currently in active production status with 1031 units in stock. The addition of Automotive AEC-Q200 qualification enhances reliability documentation for applications requiring automotive-grade components.

Upgrade Substitutes:

Three upgrade options provide enhanced performance characteristics while maintaining full electrical and mechanical compatibility:

1. TNPW08051K17BHEA (Vishay Dale TNPW e3 Series): This upgrade delivers improved tolerance (±0.1% vs. ±1%), increased power rating (0.26W), and extended operating temperature range (-55°C ~ 175°C). The addition of Anti-Sulfur and Automotive AEC-Q200 features supports applications in corrosive environments and automotive systems. ROHS3 compliance is maintained.

2. PHP00805H1171BST1 (Vishay Dale PHP Series): This upgrade provides the highest power rating (0.63W, 5/8W) with superior tolerance (±0.1%). Flame Proof and Safety certifications indicate suitability for high-reliability and safety-critical applications. ROHS3 compliance is maintained.

3. PHP00805H1171BBT1 (Vishay Dale PHP Series): Functionally identical to PHP00805H1171BST1 with equivalent electrical and mechanical specifications. RoHS non-compliance status requires evaluation against regulatory requirements for the target application.

Selection Criteria:

• For direct replacement in existing designs: Select RN73R2ATTD1171F50
• For applications requiring extended temperature range: Select TNPW08051K17BHEA
• For high-reliability or safety-critical applications: Select PHP00805H1171BST1
• For regulatory compliance verification: Confirm RoHS requirements before selecting PHP00805H1171BBT1

Frequently Asked Questions (FAQ)

Q: Can the RN73R2ATTD1171F50 be used as a direct replacement for the RN732ATTD1171F50?

A: Yes. The RN73R2ATTD1171F50 is electrically and mechanically compatible. Both components feature 1.17 kOhms ±1% resistance, ±50ppm/°C temperature coefficient, 0805 package format, and identical operating temperature range (-55°C ~ 155°C). The RN73R2ATTD1171F50 provides a higher power rating (0.125W vs. 0.1W), which is acceptable for direct substitution. Both maintain ROHS3 compliance and MSL 1 moisture sensitivity rating.

Q: What is the difference between the direct equivalent and upgrade substitutes?

A: The direct equivalent (RN73R2ATTD1171F50) maintains the original tolerance specification (±1%) and power rating class (0.1W/0.125W). Upgrade substitutes offer either tighter tolerance (±0.1%), higher power ratings (0.26W or 0.63W), or both. Upgrades are backward-compatible but provide enhanced performance margins. Selection depends on circuit requirements and design margins.

Q: Are the Vishay Dale PHP00805H1171BST1 and PHP00805H1171BBT1 parts interchangeable?

A: Electrically and mechanically, yes. Both parts are identical in resistance (1.17 kOhms), tolerance (±0.1%), power rating (0.63W), package (0805), and operating temperature range (-55°C ~ 155°C). The primary difference is RoHS compliance status: PHP00805H1171BST1 is ROHS3 compliant, while PHP00805H1171BBT1 is RoHS non-compliant. Selection must align with regulatory requirements for the target application.

Q: Can I use a higher power-rated resistor (0.26W or 0.63W) in place of the 0.1W original?

A: Yes. Higher power ratings are acceptable substitutes provided all other electrical parameters (resistance, tolerance, temperature coefficient) and mechanical parameters (package, dimensions) remain compatible. Higher power ratings provide additional thermal dissipation capability and do not degrade circuit performance. Physical dimensions remain within 0805 package specifications for all listed substitutes.

Q: What does the ±50ppm/°C temperature coefficient mean for substitution?

A: The temperature coefficient specifies resistance change per degree Celsius across the operating temperature range. All listed substitutes maintain ±50ppm/°C, ensuring identical temperature stability performance. This parameter must match the original specification for applications sensitive to resistance drift over temperature variations.

Q: Is the TNPW08051K17BHEA suitable for automotive applications?

A: Yes. The TNPW08051K17BHEA carries Automotive AEC-Q200 qualification, indicating compliance with automotive industry reliability and performance standards. This part is suitable for automotive-grade applications and provides Anti-Sulfur protection for environments with corrosive exposure.

Q: What is Moisture Sensitivity Level (MSL) 1, and why is it important?

A: MSL 1 (Unlimited) indicates the component has unlimited shelf life and requires no special moisture-control handling during storage and assembly. All listed substitutes maintain MSL 1 rating, ensuring consistent handling procedures and eliminating moisture-related reliability concerns.

Q: Can I substitute the RN732ATTD1171F50 with any of these parts without circuit redesign?

A: Yes, all listed substitutes are electrically and mechanically compatible with the original RN732ATTD1171F50. No circuit redesign is required. The direct equivalent (RN73R2ATTD1171F50) provides the closest functional match. Upgrade substitutes offer enhanced performance margins and are also suitable for direct substitution without modification.