Equivalent & Substitute Parts for RN732ATTD4070F25

Part Overview

The RN732ATTD4070F25 is a 407 Ohm ±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 is classified as obsolete product status. Due to its obsolescence, equivalent and substitute parts with active product status and enhanced specifications are available to maintain design continuity and ensure long-term supply chain reliability.

Substiute Parts

RN732ATTD4070F25

KOA Speer Electronics, Inc.In Stock: 899RN732ATTD4070F25 Datasheet

Current PartRFQ

RN73R2ATTD4070F25

KOA Speer Electronics, Inc.In Stock: 790RN73R2ATTD4070F25 Datasheet

DirectRFQ

PAT0805E4070BST1

Vishay Dale Thin FilmIn Stock: 932PAT0805E4070BST1 Datasheet

UpgradeRFQ

PHP00805E4070BBT1

Vishay Dale Thin FilmIn Stock: 784PHP00805E4070BBT1 Datasheet

UpgradeRFQ

PHP00805E4070BST1

Vishay Dale Thin FilmIn Stock: 860PHP00805E4070BST1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4070F25 is determined by the following criteria:

Core Electrical Parameters (Non-Negotiable):

• Resistance value: 407 Ohms
• Tolerance: ±1% or better (tighter tolerance acceptable)
• Package: 0805 (2012 Metric)
• Composition: Thin Film
• Temperature Coefficient: ±25ppm/°C
• Operating Temperature Range: -55°C ~ 155°C

Mechanical Compatibility:

• Physical dimensions must accommodate 0805 package footprint
• Number of terminations: 2

Substitution Logic: Substitute parts must maintain identical resistance, tolerance equal to or better than ±1%, and identical package format. Power rating may be equal or higher without affecting circuit compatibility. Enhanced features (automotive qualification, anti-sulfur coating, flame proof rating) and improved compliance certifications are acceptable upgrades. Product status transition from obsolete to active is required for long-term availability.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent (Same Specifications, Active Status): RN73R2ATTD4070F25 is the direct equivalent from KOA Speer Electronics. It maintains identical electrical specifications (407 Ohms ±1%, ±25ppm/°C, -55°C ~ 155°C) and package format while offering active product status. The power rating increase from 0.1W to 0.125W provides additional thermal margin without affecting circuit operation. This part includes automotive AEC-Q200 qualification, enhancing reliability for demanding applications.

Enhanced Specification Alternatives (Upgraded Performance): PAT0805E4070BST1 from Vishay Dale provides tighter tolerance (±0.1% versus ±1%), higher power rating (0.2W), and anti-sulfur coating for enhanced environmental protection. This part maintains ROHS3 compliance and active product status, suitable for applications requiring superior accuracy and corrosion resistance.

PHP00805E4070BST1 from Vishay Dale offers the highest power rating (0.63W) with ±0.1% tolerance, flame proof rating, and safety certification. This part maintains ROHS3 compliance and active product status, appropriate for safety-critical applications and high-stress thermal environments.

Compliance Consideration: PHP00805E4070BBT1 is functionally equivalent to PHP00805E4070BST1 but carries RoHS non-compliant status. Selection of this part requires explicit compliance verification for target applications and markets.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4070F25 directly replace RN732ATTD4070F25 in existing designs?

A: Yes. RN73R2ATTD4070F25 maintains identical resistance (407 Ohms), tolerance (±1%), package (0805), and operating temperature range (-55°C ~ 155°C). The increased power rating (0.125W versus 0.1W) is a non-limiting upgrade. Both parts are thin film composition with ±25ppm/°C temperature coefficient and MSL 1 rating.

Q: What is the primary advantage of selecting PAT0805E4070BST1 over the direct equivalent?

A: PAT0805E4070BST1 provides tighter tolerance (±0.1% versus ±1%), higher power dissipation capability (0.2W), and anti-sulfur coating for enhanced environmental durability. These upgrades are beneficial for precision analog circuits and applications exposed to corrosive atmospheres.

Q: Are the Vishay Dale PHP series parts suitable for all applications requiring the RN732ATTD4070F25?

A: PHP series parts (PHP00805E4070BBT1 and PHP00805E4070BST1) are suitable for applications requiring flame proof rating and safety certification. Both maintain identical resistance, tolerance (±0.1%), and operating temperature range. PHP00805E4070BST1 is ROHS3 compliant; PHP00805E4070BBT1 is RoHS non-compliant. Compliance requirements must be verified before selection.

Q: Does package footprint compatibility differ between substitute parts?

A: All substitute parts use 0805 (2012 Metric) package format with identical footprint compatibility. Physical dimensions are nominally equivalent: main part and RN73R2ATTD4070F25 measure 2.00mm × 1.25mm; Vishay Dale parts measure 2.03mm × 1.27mm. These dimensional variations are within standard PCB design tolerances for 0805 components.

Q: What is the impact of product status change from obsolete to active?

A: Active product status ensures long-term availability, consistent manufacturing processes, and supply chain reliability. Obsolete products face discontinuation risk and potential manufacturing process changes in remaining inventory. Selection of active status parts (RN73R2ATTD4070F25, PAT0805E4070BST1, PHP series) eliminates future sourcing constraints.

Q: Can higher power-rated substitutes affect circuit thermal performance?

A: Higher power ratings do not negatively affect circuit operation. PAT0805E4070BST1 (0.2W) and PHP series (0.63W) provide additional thermal margin, reducing junction temperature rise under identical current conditions. This upgrade improves component reliability and extends operational life in thermally constrained environments.