RN732ATTD4591A05 Equivalent & Substitute Parts Reference

Part Overview

The RN732ATTD4591A05 is a 4.59 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

RN732ATTD4591A05

KOA Speer Electronics, Inc.In Stock: 1167RN732ATTD4591A05 Datasheet

Current PartRFQ

RN73R2ATTD4591A05

KOA Speer Electronics, Inc.In Stock: 785RN73R2ATTD4591A05 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 RN732ATTD4591A05 is determined by the following critical parameters: resistance value (4.59 kOhms), tolerance (±0.05%), package format (0805), composition (thin film), and temperature coefficient (±5ppm/°C). All identified substitute parts maintain these core electrical specifications. Substitutes are categorized into two groups:

Direct Equivalent: Parts maintaining identical resistance, tolerance, and package specifications with compatible power ratings and operating temperature ranges.

Upgrade Substitutes: Parts exceeding the original specifications in power rating, tolerance precision, or operating temperature range while maintaining package compatibility and core electrical characteristics.

The following key parameters determine substitution validity:

• Resistance value: 4.59 kOhms (exact match required)
• Tolerance: ±0.05% or tighter
• Package: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±5ppm/°C

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Selection:

RN73R2ATTD4591A05 serves as the primary direct equivalent. This KOA Speer Electronics component maintains identical resistance (4.59 kOhms), tolerance (±0.05%), package (0805), and temperature coefficient (±5ppm/°C) specifications. The increased power rating (0.125W versus 0.1W) provides enhanced thermal margin without affecting circuit performance. Active product status ensures ongoing availability. ROHS3 compliance matches the original part's regulatory standing. Automotive AEC-Q200 qualification provides additional reliability assurance for demanding applications.

Upgrade Substitute Selection:

PLTT0805Z4591AGT5 (Vishay Dale) offers specification improvements while maintaining tolerance compatibility. This part provides 0.25W power rating, extended operating temperature range (-55°C to 215°C), and ROHS3 compliance. The tolerance specification (±0.05%) matches the original requirement. Active product status and established supply chain support long-term availability.

PLTT0805Z4591QGT5 (Vishay Dale) provides the highest tolerance precision (±0.02%) among available substitutes, with identical 0.25W power rating and extended temperature range (-55°C to 215°C). ROHS3 compliance and active status support regulatory and procurement requirements.

PLT0805Z4591LBTS (Vishay Dale) delivers the tightest tolerance (±0.01%) and highest power rating (0.25W). However, RoHS non-compliance and reduced operating temperature ceiling (-55°C to 125°C) require evaluation against specific application constraints.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4591A05 directly replace RN732ATTD4591A05 in existing designs?

A: Yes. RN73R2ATTD4591A05 maintains identical electrical specifications (4.59 kOhms ±0.05%, ±5ppm/°C temperature coefficient) and package format (0805). The increased power rating (0.125W versus 0.1W) is a non-restrictive enhancement. Both parts are ROHS3 compliant with MSL 1 rating. Physical dimensions and termination count are identical.

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

A: KOA Speer RN73R2ATTD4591A05 maintains the original manufacturer's design with automotive AEC-Q200 qualification. Vishay Dale PLTT series parts offer higher power ratings (0.25W), extended temperature ranges (to 215°C), and enhanced tolerance options (±0.02% to ±0.01%). Selection depends on application thermal requirements and temperature operating envelope.

Q: Is PLT0805Z4591LBTS suitable for RoHS-regulated applications?

A: No. PLT0805Z4591LBTS carries RoHS non-compliant status, making it unsuitable for applications requiring RoHS3 certification. PLTT0805Z4591AGT5 and PLTT0805Z4591QGT5 are ROHS3 compliant alternatives with superior specifications.

Q: How do tolerance specifications affect substitution decisions?

A: The original RN732ATTD4591A05 specifies ±0.05% tolerance. All identified substitutes meet or exceed this requirement. RN73R2ATTD4591A05 matches at ±0.05%. Vishay Dale PLTT0805Z4591AGT5 maintains ±0.05%, while PLTT0805Z4591QGT5 (±0.02%) and PLT0805Z4591LBTS (±0.01%) provide tighter tolerance margins for precision circuit applications.

Q: Are package dimensions identical across all substitute parts?

A: Package designation (0805 / 2012 Metric) is identical. Dimensional variations exist: RN732ATTD4591A05 and RN73R2ATTD4591A05 measure 0.079" L × 0.049" W (2.00mm × 1.25mm) with 0.024" maximum seated height. Vishay Dale parts measure 0.080" L × 0.050" W (2.03mm × 1.27mm) with 0.033" maximum seated height. These minor variations remain within 0805 package tolerance and do not affect PCB layout compatibility.

Q: What is the operating temperature consideration for substitute selection?

A: Original RN732ATTD4591A05 operates -55°C to 155°C. RN73R2ATTD4591A05 maintains this range. Vishay Dale PLTT series extends to -55°C to 215°C, providing enhanced thermal margin for high-temperature applications. PLT0805Z4591LBTS operates -55°C to 125°C, which is more restrictive than the original specification.