RN732ATTD4070A10 Equivalent & Substitute Parts

Part Overview

The RN732ATTD4070A10 is a 407 Ohm ±0.05% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.1W (1/10W) in 0805 (2012 Metric) surface mount package. This component features moisture-resistant construction with a temperature coefficient of ±10ppm/°C and operates across -55°C to 155°C. The part is currently classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity.

Substiute Parts

RN732ATTD4070A10

KOA Speer Electronics, Inc.In Stock: 995RN732ATTD4070A10 Datasheet

Current PartRFQ

RN73R2ATTD4070A10

KOA Speer Electronics, Inc.In Stock: 1190RN73R2ATTD4070A10 Datasheet

DirectRFQ

PLTT0805Z4070AGT5

Vishay Dale Thin FilmIn Stock: 1218PLTT0805Z4070AGT5 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD4070A10 is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Resistance value: 407 Ohms (exact match required)
• Tolerance: ±0.05% (precision specification)
• Package: 0805 (2012 Metric) (physical and electrical footprint)
• Composition: Thin Film (electrical performance characteristics)
• Moisture Resistance: Required feature

Allowable Variation Parameters:

• Power rating: Equal to or greater than 0.1W
• Temperature coefficient: Equal to or lower absolute value
• Operating temperature range: Equal to or exceeding -55°C ~ 155°C
• Product status: Active preferred for long-term availability

The identified substitutes maintain the core electrical specifications (resistance, tolerance, package, thin film composition) while offering enhanced or equivalent performance characteristics. Substitute parts may feature higher power ratings, improved temperature coefficients, extended operating ranges, or additional certifications without compromising the original design intent.

Parameter Comparison

Engineering Selection Recommendations

RN73R2ATTD4070A10 (Direct Substitute): This part is the primary equivalent for the obsolete RN732ATTD4070A10. It maintains identical electrical specifications (407 Ohms, ±0.05% tolerance, ±10ppm/°C temperature coefficient, -55°C ~ 155°C operating range) within the same 0805 package. The RN73R2ATTD4070A10 is currently in active production status with higher inventory availability (1136 Pcs). It includes AEC-Q200 automotive qualification, providing enhanced reliability documentation. The increased power rating (0.125W vs. 0.1W) offers additional thermal margin without affecting circuit performance. This substitute is suitable for direct replacement in existing designs.

PLTT0805Z4070AGT5 (Upgrade Substitute): This Vishay Dale component provides enhanced performance characteristics for applications requiring superior specifications. It maintains the core 407 Ohm, ±0.05% tolerance requirement with improved temperature coefficient (±5ppm/°C vs. ±10ppm/°C), resulting in better long-term stability. The extended operating temperature range (-55°C ~ 215°C) accommodates high-temperature applications beyond the original specification. The doubled power rating (0.25W) provides significant thermal headroom. Additional features include anti-corrosive and flame-proof construction with safety certification. This upgrade is appropriate for designs requiring enhanced environmental performance or extended temperature operation.

Both substitutes maintain ROHS3 compliance, MSL Level 1 rating, and moisture-resistant thin film construction. Selection between direct and upgrade substitutes depends on application thermal requirements and environmental specifications.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD4070A10 be used as a direct replacement for RN732ATTD4070A10?

A: Yes. Both parts share identical resistance (407 Ohms), tolerance (±0.05%), temperature coefficient (±10ppm/°C), operating temperature range (-55°C ~ 155°C), and 0805 package. The RN73R2ATTD4070A10 features a higher power rating (0.125W vs. 0.1W), which is compatible with the original design. The primary advantage is active production status and AEC-Q200 certification.

Q: What is the difference between the main part and substitute parts in terms of power rating?

A: The RN732ATTD4070A10 is rated at 0.1W (1/10W). The RN73R2ATTD4070A10 is rated at 0.125W (1/8W), and the PLTT0805Z4070AGT5 is rated at 0.25W (1/4W). Higher power ratings indicate greater thermal dissipation capability. All three ratings are compatible with the same 0805 physical package, though the PLTT variant has a slightly increased maximum seated height (0.033" vs. 0.024").

Q: Are there any certifications or compliance differences?

A: The RN73R2ATTD4070A10 includes AEC-Q200 automotive qualification. The PLTT0805Z4070AGT5 includes anti-corrosive, flame-proof, and safety certifications. All three parts are ROHS3 compliant with MSL Level 1 rating. Selection depends on application-specific certification requirements.

Q: Can PLTT0805Z4070AGT5 be used in place of RN732ATTD4070A10?

A: Yes. The PLTT0805Z4070AGT5 maintains all critical electrical parameters (407 Ohms, ±0.05% tolerance, 0805 package, thin film composition, moisture resistance). It offers improved temperature coefficient (±5ppm/°C), extended operating range (-55°C ~ 215°C), and higher power rating (0.25W). This upgrade is suitable for applications requiring enhanced performance or extended environmental specifications.

Q: What is the significance of the ±0.05% tolerance specification?

A: The ±0.05% tolerance indicates precision thin film resistor construction. All three parts maintain this specification, ensuring high accuracy for applications requiring tight resistance tolerances. This precision level is critical for analog circuits, measurement instrumentation, and precision signal conditioning.

Q: Are the physical dimensions compatible across all three parts?

A: The RN732ATTD4070A10 and RN73R2ATTD4070A10 have identical dimensions (0.079" L x 0.049" W, 0.024" max height). The PLTT0805Z4070AGT5 has slightly different dimensions (0.080" L x 0.050" W, 0.033" max height) due to different construction. Both are 0805 package standard and compatible with standard 0805 PCB footprints, though the PLTT variant has increased height clearance requirements.

Q: What does MSL Level 1 rating mean?

A: MSL (Moisture Sensitivity Level) Level 1 indicates unlimited shelf life without moisture control requirements. All three parts carry this rating, meaning they do not require special dry-pack storage or baking procedures prior to assembly.