Equivalent & Substitute Parts for RN732ATTD8563B50

Part Overview

The RN732ATTD8563B50 is an 856 kOhms ±0.1% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.1W (1/10W) in 0805 (2012 Metric) package. This component is classified as obsolete product status. Due to its obsolete designation, identifying equivalent and substitute parts with compatible electrical and mechanical specifications is necessary to maintain design continuity and ensure procurement availability for ongoing production and repair applications.

Substiute Parts

RN732ATTD8563B50

KOA Speer Electronics, Inc.In Stock: 1091RN732ATTD8563B50 Datasheet

Current PartRFQ

RN73R2ATTD8563B50

KOA Speer Electronics, Inc.In Stock: 1109RN73R2ATTD8563B50 Datasheet

DirectRFQ

PHP00805E8563BBT1

Vishay Dale Thin FilmIn Stock: 828PHP00805E8563BBT1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RN732ATTD8563B50 are identified based on the following critical parameters that determine functional and mechanical compatibility:

Primary Matching Criteria:

• Resistance value: 856 kOhms (exact match required)
• Tolerance: ±0.1% (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required)
• Composition: Thin Film (exact match required)
• Operating Temperature Range: -55°C ~ 155°C (minimum requirement)
• Moisture Sensitivity Level: 1 (Unlimited) (compatible)

Secondary Compatibility Parameters:

• Power Rating: Equal to or greater than 0.1W
• Temperature Coefficient: Equal to or lower absolute value
• RoHS Compliance: ROHS3 or equivalent

The substitute parts listed maintain identical resistance, tolerance, package, and composition specifications. Variations in power rating, temperature coefficient, and additional certifications (such as AEC-Q200 or Flame Proof ratings) represent upgrades or enhanced feature sets that do not compromise backward compatibility with the original design specification.

Parameter Comparison

Engineering Selection Recommendations

RN73R2ATTD8563B50 (Direct Substitute - Recommended for Most Applications)

The RN73R2ATTD8563B50 is the primary direct substitute for the obsolete RN732ATTD8563B50. This part maintains identical electrical specifications (856 kOhms, ±0.1% tolerance, ±50ppm/°C temperature coefficient) and mechanical compatibility (0805 package, identical dimensions and height). The power rating increase from 0.1W to 0.125W provides additional thermal margin without affecting circuit performance. The part carries active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. The addition of AEC-Q200 automotive qualification provides enhanced reliability documentation suitable for demanding applications.

PHP00805E8563BBT1 (Upgrade Substitute - For Enhanced Performance Requirements)

The PHP00805E8563BBT1 from Vishay Dale Thin Film serves as an upgrade substitute when enhanced thermal performance or safety certifications are required. This part delivers superior temperature coefficient performance (±25ppm/°C versus ±50ppm/°C), resulting in improved frequency stability and reduced temperature-dependent drift. The significantly higher power rating (0.63W) accommodates applications with elevated power dissipation requirements. Flame Proof and Safety certifications address specialized regulatory or safety-critical applications. Physical dimensions show minor variations (height increases to 0.033" maximum), requiring verification of PCB layout clearance. RoHS non-compliance status necessitates evaluation against project regulatory requirements before selection.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD8563B50 be used as a direct replacement for RN732ATTD8563B50 in existing designs?

A: Yes. The RN73R2ATTD8563B50 maintains identical electrical specifications (856 kOhms, ±0.1% tolerance, ±50ppm/°C temperature coefficient) and mechanical compatibility (0805 package, identical footprint dimensions). The increased power rating (0.125W versus 0.1W) does not compromise circuit function and provides additional thermal margin. No design modifications are required.

Q: What are the key differences between the two KOA Speer substitutes?

A: Both RN732ATTD8563B50 and RN73R2ATTD8563B50 share identical electrical and mechanical specifications. The primary difference is product status: RN732ATTD8563B50 is obsolete, while RN73R2ATTD8563B50 is active. RN73R2ATTD8563B50 includes AEC-Q200 automotive qualification, providing enhanced reliability documentation for automotive and demanding industrial applications.

Q: When should PHP00805E8563BBT1 be selected instead of RN73R2ATTD8563B50?

A: Select PHP00805E8563BBT1 when applications require superior temperature stability (±25ppm/°C versus ±50ppm/°C), higher power dissipation capability (0.63W versus 0.125W), or Flame Proof and Safety certifications. Verify PCB layout clearance due to increased maximum height (0.033" versus 0.024"). Confirm RoHS non-compliance status against project regulatory requirements.

Q: Are there physical footprint compatibility concerns when substituting these parts?

A: RN73R2ATTD8563B50 maintains identical dimensions and height to the original RN732ATTD8563B50, ensuring direct PCB compatibility without layout modifications. PHP00805E8563BBT1 shows minor dimensional variations (length 0.080" versus 0.079", width 0.050" versus 0.049", height 0.033" versus 0.024"). Verify clearance for the increased height before PCB layout finalization.

Q: What is the significance of the ±0.1% tolerance specification?

A: The ±0.1% tolerance indicates precision thin film resistor construction, suitable for applications requiring tight resistance accuracy such as precision measurement circuits, analog signal conditioning, and reference networks. All three substitute parts maintain this specification, ensuring equivalent performance in tolerance-critical applications.

Q: How does temperature coefficient affect part selection?

A: Temperature coefficient (±50ppm/°C for RN732ATTD8563B50 and RN73R2ATTD8563B50; ±25ppm/°C for PHP00805E8563BBT1) determines resistance drift across the operating temperature range. Lower absolute values indicate superior temperature stability. PHP00805E8563BBT1 provides enhanced stability for applications sensitive to temperature-induced resistance variation. Both KOA Speer parts are equivalent in this parameter.

Q: What does ROHS3 compliance mean for RN73R2ATTD8563B50?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, hexavalent chromium, and specified brominated flame retardants. This certification is required for European Union market access and many regulated industries. PHP00805E8563BBT1 is RoHS non-compliant and requires regulatory evaluation before use in RoHS-mandated applications.

Q: Is AEC-Q200 qualification important for non-automotive applications?

A: AEC-Q200 automotive qualification provides third-party reliability documentation and enhanced quality assurance procedures. While not required for non-automotive applications, this certification demonstrates superior manufacturing controls and reliability testing. It is beneficial for mission-critical or high-reliability applications across all industries.