RN732ATTD1261A05 Equivalent & Substitute Parts

Part Overview

The RN732ATTD1261A05 is a 1.26 kOhms ±0.05% 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 ±5ppm/°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

RN732ATTD1261A05

KOA Speer Electronics, Inc.In Stock: 809RN732ATTD1261A05 Datasheet

Current PartRFQ

RN73R2ATTD1261A05

KOA Speer Electronics, Inc.In Stock: 881RN73R2ATTD1261A05 Datasheet

DirectRFQ

PLT0805Z1261LBTS

Vishay Dale Thin FilmIn Stock: 851PLT0805Z1261LBTS Datasheet

UpgradeRFQ

PLTT0805Z1261AGT5

Vishay Dale Thin FilmIn Stock: 1218PLTT0805Z1261AGT5 Datasheet

UpgradeRFQ

PLTT0805Z1261QGT5

Vishay Dale Thin FilmIn Stock: 1161PLTT0805Z1261QGT5 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD1261A05 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters for Substitution:

• Resistance value: 1.26 kOhms (exact match required)
• Tolerance: ±0.05% or tighter (lower tolerance values are acceptable)
• Package / Case: 0805 (2012 Metric) (physical compatibility requirement)
• Composition: Thin Film (electrical performance characteristic)
• Temperature Coefficient: ±5ppm/°C (stability requirement)
• Moisture Sensitivity Level: 1 (Unlimited) (handling and storage compatibility)

Allowable Variations:

• Power Rating: May be equal to or greater than 0.1W (higher power ratings provide design margin)
• Operating Temperature Range: May be equal to or exceed -55°C ~ 155°C (extended range acceptable)
• RoHS Status: ROHS3 Compliant or equivalent regulatory compliance acceptable
• Product Status: Active parts preferred for long-term availability

All substitute parts listed maintain identical resistance, tolerance, package format, and thin film composition. Variations in power rating and operating temperature represent upgrades that maintain full electrical and mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Same Manufacturer):

RN73R2ATTD1261A05 serves as the direct equivalent from KOA Speer Electronics, Inc. This part maintains identical electrical specifications (1.26 kOhms ±0.05%, ±5ppm/°C) and package format while offering increased power rating (0.125W vs. 0.1W) and active product status. The addition of Automotive AEC-Q200 qualification provides enhanced reliability documentation. ROHS3 compliance is maintained. This substitute is recommended for applications requiring continuity with the original manufacturer's product line.

Upgraded Alternatives (Higher Performance):

The Vishay Dale Thin Film series (PLT0805Z1261LBTS, PLTT0805Z1261AGT5, PLTT0805Z1261QGT5) provides enhanced performance characteristics while maintaining 0805 package compatibility and 1.26 kOhms resistance. All three parts feature increased power rating (0.25W), extended operating temperature range (up to 215°C for PLTT series), and additional protective features (anti-corrosive, flame proof, safety). These upgrades accommodate more demanding thermal and environmental conditions.

Tolerance Considerations:

PLT0805Z1261LBTS offers tighter tolerance (±0.01%) compared to the original specification (±0.05%), suitable for precision applications. PLTT0805Z1261QGT5 provides intermediate tolerance (±0.02%). PLTT0805Z1261AGT5 matches the original tolerance (±0.05%). Selection depends on circuit accuracy requirements.

Regulatory Compliance:

RN73R2ATTD1261A05 and PLTT series (PLTT0805Z1261AGT5, PLTT0805Z1261QGT5) maintain ROHS3 compliance. PLT0805Z1261LBTS is RoHS non-compliant and should be selected only when regulatory requirements permit or when legacy system compatibility is required.

Availability and Product Status:

All substitute parts are classified as active products with current inventory availability, ensuring long-term procurement viability compared to the obsolete RN732ATTD1261A05.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD1261A05 directly replace RN732ATTD1261A05 in existing designs?

A: Yes. RN73R2ATTD1261A05 maintains identical electrical specifications (1.26 kOhms ±0.05%, ±5ppm/°C temperature coefficient) and 0805 package format. The increased power rating (0.125W vs. 0.1W) provides additional design margin without affecting circuit performance. Both parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity.

Q: What are the key differences between KOA Speer and Vishay Dale substitutes?

A: KOA Speer RN73R2ATTD1261A05 maintains manufacturer continuity with identical specifications and adds Automotive AEC-Q200 qualification. Vishay Dale alternatives (PLT and PLTT series) offer higher power ratings (0.25W), extended operating temperature ranges (up to 215°C), and additional protective features (anti-corrosive, flame proof, safety). Resistance, tolerance, and package format remain identical across all options.

Q: Are the Vishay Dale parts physically compatible with the original 0805 footprint?

A: Yes. All substitute parts use 0805 (2012 Metric) package format with identical termination count (2). Physical dimensions are within acceptable tolerance for standard 0805 PCB layouts. Height variation (0.024" maximum for KOA vs. 0.033" maximum for Vishay) remains within typical PCB assembly clearance specifications.

Q: Which substitute is recommended for high-temperature applications?

A: PLTT0805Z1261AGT5 and PLTT0805Z1261QGT5 support operating temperatures up to 215°C, compared to 155°C for the original part and RN73R2ATTD1261A05. Both maintain ROHS3 compliance and identical resistance/tolerance specifications. Selection between these two depends on tolerance requirements (±0.05% vs. ±0.02%).

Q: What is the impact of tolerance differences on circuit performance?

A: PLT0805Z1261LBTS (±0.01%) and PLTT0805Z1261QGT5 (±0.02%) provide tighter tolerance than the original specification (±0.05%). Tighter tolerance reduces component-to-component variation and improves circuit accuracy in precision applications. Selection should be based on circuit design requirements and tolerance stack-up analysis.

Q: Are all substitutes suitable for automotive applications?

A: RN73R2ATTD1261A05 carries Automotive AEC-Q200 qualification. Vishay Dale PLTT series (PLTT0805Z1261AGT5, PLTT0805Z1261QGT5) includes safety features (anti-corrosive, flame proof) suitable for automotive environments. PLT0805Z1261LBTS lacks explicit automotive qualification. Application requirements should determine automotive suitability.

Q: What is the significance of RoHS compliance differences?

A: RN73R2ATTD1261A05, PLTT0805Z1261AGT5, and PLTT0805Z1261QGT5 are ROHS3 compliant. PLT0805Z1261LBTS is RoHS non-compliant. Selection depends on end-product regulatory requirements and regional compliance mandates. ROHS3-compliant parts are recommended for applications subject to EU RoHS Directive or equivalent regulations.

Q: Can substitutes be mixed in the same design or production batch?

A: All substitutes maintain identical resistance (1.26 kOhms), tolerance (±0.05% or tighter), package format (0805), and temperature coefficient (±5ppm/°C). Mixing is electrically compatible. However, procurement and quality control practices should maintain consistency within production batches to ensure uniform performance characteristics and traceability.