RN732ATTD4591B05 Equivalent & Substitute Parts Reference

Part Overview

The RN732ATTD4591B05 is a 4.59 kOhms ±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 ±5ppm/°C and operates across -55°C to 155°C. The product is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

RN732ATTD4591B05

KOA Speer Electronics, Inc.In Stock: 813RN732ATTD4591B05 Datasheet

Current PartRFQ

RN73R2ATTD4591B05

KOA Speer Electronics, Inc.In Stock: 796RN73R2ATTD4591B05 Datasheet

DirectRFQ

PLT0805Z4591LBTS

Vishay Dale Thin FilmIn Stock: 773PLT0805Z4591LBTS Datasheet

UpgradeRFQ

PLTT0805Z4591AGT5

Vishay Dale Thin FilmIn Stock: 938PLTT0805Z4591AGT5 Datasheet

UpgradeRFQ

PLTT0805Z4591QGT5

Vishay Dale Thin FilmIn Stock: 828PLTT0805Z4591QGT5 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4591B05 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Resistance value: 4.59 kOhms (exact match required)
• Package format: 0805 (2012 Metric) (physical and electrical compatibility)
• Composition: Thin Film (electrical performance characteristics)
• Temperature coefficient: ±5ppm/°C (stability requirement)
• Moisture sensitivity level: 1 (Unlimited) (environmental tolerance)

Secondary Compatibility Criteria:

• Tolerance: ±0.1% or better (equal or tighter tolerance acceptable)
• Power rating: 0.1W or higher (equal or greater power capacity acceptable)
• Operating temperature range: Must encompass or exceed -55°C ~ 155°C
• RoHS compliance: ROHS3 Compliant preferred for regulatory alignment

Substitute parts are grouped into two categories: direct equivalents (matching power rating and tolerance) and upgrades (enhanced tolerance, higher power rating, or extended temperature range).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Same Performance Class):

RN73R2ATTD4591B05 serves as the primary direct equivalent. This KOA Speer Electronics part maintains identical resistance, tolerance, temperature coefficient, and operating temperature range as the RN732ATTD4591B05. The power rating increase from 0.1W to 0.125W (1/8W) provides enhanced thermal margin without affecting circuit performance. This part carries Active product status and includes Automotive AEC-Q200 qualification, ensuring long-term availability and reliability. ROHS3 compliance aligns with current regulatory requirements.

Upgrade Options (Enhanced Performance):

PLT0805Z4591LBTS, PLTT0805Z4591AGT5, and PLTT0805Z4591QGT5 are Vishay Dale thin film resistors offering superior tolerance specifications (±0.01%, ±0.05%, and ±0.02% respectively) and increased power ratings (0.25W / 1/4W). These upgrades provide tighter tolerance performance for precision applications. PLTT0805Z4591AGT5 and PLTT0805Z4591QGT5 extend operating temperature to -55°C ~ 215°C and maintain ROHS3 compliance. PLT0805Z4591LBTS operates to -55°C ~ 125°C and carries RoHS non-compliant status, limiting suitability for regulated applications.

Selection Criteria by Application:

For direct replacement in existing designs with standard tolerance requirements, RN73R2ATTD4591B05 is recommended. For applications requiring extended temperature operation or tighter tolerance specifications, PLTT0805Z4591AGT5 or PLTT0805Z4591QGT5 are appropriate. Avoid PLT0805Z4591LBTS in applications subject to RoHS regulations.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4591B05 directly replace RN732ATTD4591B05 without circuit modification?

A: Yes. Both parts share identical resistance (4.59 kOhms), tolerance (±0.1%), temperature coefficient (±5ppm/°C), package format (0805), and operating temperature range (-55°C ~ 155°C). The increased power rating (0.125W vs. 0.1W) is backward compatible and does not require design changes.

Q: What is the difference between the KOA Speer and Vishay Dale substitute options?

A: KOA Speer RN73R2ATTD4591B05 maintains the original specification with Automotive AEC-Q200 qualification. Vishay Dale options (PLT and PLTT series) offer tighter tolerance specifications and higher power ratings. PLTT series extends operating temperature to 215°C and maintains ROHS3 compliance. Selection depends on tolerance and temperature requirements.

Q: Are all substitute parts physically compatible with the 0805 package footprint?

A: Yes. All substitute parts use 0805 (2012 Metric) package format with identical termination count (2). Physical dimensions are equivalent: 0.079" L x 0.049" W (2.00mm x 1.25mm) for KOA Speer parts and 0.080" L x 0.050" W (2.03mm x 1.27mm) for Vishay Dale parts. Height differences (0.024" vs. 0.033" maximum seated height) do not affect PCB assembly compatibility.

Q: Which substitute part is recommended for RoHS-regulated applications?

A: RN73R2ATTD4591B05, PLTT0805Z4591AGT5, and PLTT0805Z4591QGT5 all carry ROHS3 Compliant status. PLT0805Z4591LBTS is RoHS non-compliant and unsuitable for regulated markets.

Q: Can Vishay Dale PLTT0805Z4591QGT5 be used in applications originally designed for RN732ATTD4591B05?

A: Yes. PLTT0805Z4591QGT5 exceeds the original specification with ±0.02% tolerance (tighter than ±0.1%), 0.25W power rating (higher than 0.1W), and extended operating temperature to 215°C (exceeding -55°C ~ 155°C). All critical parameters are compatible or superior. This part is suitable for direct substitution with performance enhancement.