RN732ATTD1140F50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1140F50 is a 114 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 ±50ppm/°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 requirements and procurement continuity.

Substiute Parts

RN732ATTD1140F50

KOA Speer Electronics, Inc.In Stock: 947RN732ATTD1140F50 Datasheet

Current PartRFQ

RN73R2ATTD1140F50

KOA Speer Electronics, Inc.In Stock: 954RN73R2ATTD1140F50 Datasheet

DirectRFQ

PHP00805H1140BBT1

Vishay Dale Thin FilmIn Stock: 1023PHP00805H1140BBT1 Datasheet

UpgradeRFQ

PHP00805H1140BST1

Vishay Dale Thin FilmIn Stock: 774PHP00805H1140BST1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD1140F50 is determined by strict alignment of the following critical parameters:

Core Compatibility Parameters:

• Resistance value: 114 Ohms (exact match required)
• Package format: 0805 (2012 Metric) (exact match required)
• Composition: Thin Film (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• Operating temperature range: -55°C ~ 155°C (exact match required)
• Moisture resistance: Required feature

Allowable Variation Parameters:

• Tolerance: May be equal or tighter (±1% or better)
• Power rating: May be equal or higher (0.1W or greater)
• Product status: Active status preferred for obsolete parts
• Compliance certifications: May include additional qualifications

Substitute parts are grouped into two categories: direct equivalents (matching all core parameters with identical or improved specifications) and upgrade options (enhanced performance characteristics while maintaining core compatibility).

Parameter Comparison

Engineering Selection Recommendations

RN73R2ATTD1140F50 (Direct Equivalent - Recommended Primary Substitute)

The RN73R2ATTD1140F50 serves as the direct equivalent replacement for the obsolete RN732ATTD1140F50. Both components share identical core specifications: 114 Ohms resistance, ±1% tolerance, 0805 package, thin film composition, ±50ppm/°C temperature coefficient, and -55°C to 155°C operating range. The RN73R2ATTD1140F50 offers a higher power rating (0.125W versus 0.1W), providing additional thermal margin without altering electrical performance. This part is manufactured by the same supplier (KOA Speer Electronics, Inc.), maintains ROHS3 compliance, and holds active product status, ensuring long-term availability. The addition of Automotive AEC-Q200 qualification provides enhanced reliability documentation suitable for demanding applications.

PHP00805H1140BST1 (Upgrade Option - Enhanced Performance)

The PHP00805H1140BST1 represents an upgrade substitute offering superior tolerance (±0.1% versus ±1%) and significantly higher power dissipation capability (0.63W versus 0.1W). This Vishay Dale component maintains all core compatibility parameters while adding flame-proof and safety certifications. ROHS3 compliance is maintained. The enhanced specifications support applications requiring tighter tolerance control and higher thermal headroom. Physical dimensions remain compatible with 0805 package requirements.

PHP00805H1140BBT1 (Upgrade Option - Alternative)

The PHP00805H1140BBT1 provides identical electrical and thermal performance to the PHP00805H1140BST1 variant, with equivalent ±0.1% tolerance and 0.63W power rating. This part differs in RoHS compliance status (non-compliant) and should be selected only when RoHS3 compliance is not a design requirement. All other specifications, including flame-proof and safety features, remain equivalent to the BST1 variant.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD1140F50 be used as a direct drop-in replacement for RN732ATTD1140F50?

A: Yes. Both components share identical resistance (114 Ohms), tolerance (±1%), package format (0805), composition (thin film), temperature coefficient (±50ppm/°C), and operating temperature range (-55°C to 155°C). The RN73R2ATTD1140F50 features a higher power rating (0.125W versus 0.1W), which provides additional thermal margin and is fully compatible with applications designed for the original part.

Q: What is the difference between the two Vishay Dale upgrade options (PHP00805H1140BBT1 and PHP00805H1140BST1)?

A: Both parts are electrically and thermally identical, offering ±0.1% tolerance and 0.63W power rating. The primary distinction is RoHS compliance: PHP00805H1140BST1 is ROHS3 compliant, while PHP00805H1140BBT1 is RoHS non-compliant. Select PHP00805H1140BST1 for applications requiring RoHS3 certification.

Q: Are the physical dimensions of substitute parts compatible with the original PCB layout?

A: Yes. All substitute parts maintain the 0805 (2012 Metric) package format with identical footprint dimensions (0.079" L x 0.049" W / 2.00mm x 1.25mm). The Vishay Dale variants have slightly increased height (0.033" versus 0.024" maximum seated height), which does not affect PCB mounting compatibility in standard 0805 applications.

Q: Does the higher power rating of substitute parts affect circuit performance?

A: No. Power rating represents the maximum dissipation capability of the component. A higher-rated part (0.125W or 0.63W) operating in a circuit designed for 0.1W dissipation will function identically to the original part, with improved thermal margin and reliability.

Q: Which substitute should be selected for automotive applications?

A: The RN73R2ATTD1140F50 includes Automotive AEC-Q200 qualification, making it suitable for automotive environments. The Vishay Dale PHP series parts do not carry automotive certifications but include flame-proof and safety features applicable to industrial and safety-critical applications.

Q: Are all substitute parts available in Tape & Reel packaging?

A: Yes. All substitute parts listed are supplied in Tape & Reel (TR) packaging format, suitable for automated assembly processes. The original RN732ATTD1140F50 packaging format was not specified in available documentation.