Equivalent & Substitute Parts for RN732ATTD1143F25

Part Overview

The RN732ATTD1143F25 is a 114 kOhms ±1% 0.1W thin film chip resistor in 0805 (2012 Metric) package manufactured by KOA Speer Electronics, Inc. This component features moisture-resistant construction and operates across -55°C to 155°C. The part is currently obsolete, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility while meeting current availability and compliance requirements.

Substiute Parts

RN732ATTD1143F25

KOA Speer Electronics, Inc.In Stock: 968RN732ATTD1143F25 Datasheet

Current PartRFQ

RN73R2ATTD1143F25

KOA Speer Electronics, Inc.In Stock: 896RN73R2ATTD1143F25 Datasheet

DirectRFQ

PAT0805E1143BST1

Vishay Dale Thin FilmIn Stock: 803PAT0805E1143BST1 Datasheet

UpgradeRFQ

TNPW0805114KBEEA

Vishay DaleIn Stock: 957TNPW0805114KBEEA Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RN732ATTD1143F25 is determined by the following criteria:

Mandatory Compatibility Parameters:

• Resistance value: 114 kOhms (exact match required)
• Package / Case: 0805 (2012 Metric) (exact match required)
• Composition: Thin Film (exact match required)
• Temperature Coefficient: ±25ppm/°C (exact match required)
• Operating Temperature Range: Minimum -55°C ~ 155°C (equal or extended range acceptable)
• Moisture Resistance: Required
• RoHS3 Compliance: Required

Allowable Variation Parameters:

• Tolerance: ±1% or tighter (±0.1% acceptable as upgrade)
• Power Rating: Equal or greater than 0.1W (0.125W, 0.2W, 0.26W acceptable as upgrades)
• Moisture Sensitivity Level: 1 (Unlimited) maintained across all substitutes
• Manufacturer: Different manufacturers acceptable if all parameters met

All three substitute parts meet these criteria and are classified as direct or upgrade substitutes based on tolerance and power rating improvements.

Parameter Comparison

Engineering Selection Recommendations

RN73R2ATTD1143F25 (Direct Substitute - KOA Speer Electronics, Inc.)

This part provides direct electrical and mechanical compatibility with the RN732ATTD1143F25. It maintains identical resistance, tolerance, package, and temperature coefficient specifications. The power rating increase from 0.1W to 0.125W provides additional thermal margin without affecting circuit performance. This part is active in production and carries AEC-Q200 automotive qualification, enhancing reliability documentation. Selection of this substitute is appropriate for applications requiring manufacturer continuity within the KOA Speer Electronics product line.

PAT0805E1143BST1 (Upgrade Substitute - Vishay Dale Thin Film)

This part offers improved tolerance (±0.1% versus ±1%) and increased power rating (0.2W versus 0.1W). The tighter tolerance reduces circuit performance variation. Anti-sulfur construction provides enhanced environmental protection. AEC-Q200 automotive qualification is included. This substitute is suitable for applications where improved accuracy and thermal performance are beneficial. The slightly larger physical dimensions (0.080" L x 0.050" W versus 0.079" L x 0.049" W) remain within 0805 package specifications.

TNPW0805114KBEEA (Upgrade Substitute - Vishay Dale)

This part delivers the highest performance upgrade with ±0.1% tolerance, 0.26W power rating, and extended operating temperature range to 175°C. Anti-sulfur construction and AEC-Q200 automotive qualification are included. This substitute is optimal for applications requiring maximum accuracy, thermal headroom, and extended temperature operation. Physical dimensions match the main part exactly.

All three substitutes maintain RoHS3 compliance, MSL 1 (Unlimited) moisture sensitivity rating, and thin film composition. Selection between direct and upgrade substitutes depends on application requirements for tolerance, power dissipation, and temperature range.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD1143F25 be used as a direct replacement for RN732ATTD1143F25?

A: Yes. Both parts share identical resistance (114 kOhms), tolerance (±1%), package (0805), composition (thin film), and temperature coefficient (±25ppm/°C). The RN73R2ATTD1143F25 has a higher power rating (0.125W versus 0.1W), which is acceptable for direct substitution as it provides additional thermal capacity without changing electrical behavior.

Q: What is the difference between the direct substitute and upgrade substitutes?

A: The RN73R2ATTD1143F25 maintains the ±1% tolerance of the original part. The PAT0805E1143BST1 and TNPW0805114KBEEA both offer ±0.1% tolerance, representing a 10-fold improvement in accuracy. Additionally, these upgrades provide higher power ratings (0.2W and 0.26W respectively) and the TNPW0805114KBEEA extends the operating temperature range to 175°C.

Q: Are all substitute parts in the same 0805 package?

A: Yes. All substitute parts use the 0805 (2012 Metric) package. Physical dimensions are nearly identical, with maximum variations of ±0.001" in length and width, which are within standard 0805 package tolerances and do not affect PCB footprint compatibility.

Q: Do the substitute parts have automotive qualification?

A: Yes. All three substitute parts carry AEC-Q200 automotive qualification. The original RN732ATTD1143F25 does not specify AEC-Q200 rating, so the substitutes provide enhanced automotive reliability documentation.

Q: What is the moisture sensitivity level for all parts?

A: All parts, including the main part and all substitutes, have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Can PAT0805E1143BST1 or TNPW0805114KBEEA be used in place of RN732ATTD1143F25?

A: Yes. Both parts meet all mandatory compatibility parameters: 114 kOhms resistance, 0805 package, thin film composition, ±25ppm/°C temperature coefficient, and -55°C to 155°C minimum operating range. The tighter tolerance (±0.1%) and higher power ratings are improvements that do not compromise compatibility. Anti-sulfur construction provides additional environmental protection.

Q: Which substitute should be selected for a cost-sensitive application?

A: The RN73R2ATTD1143F25 provides the most economical direct substitute, maintaining the original ±1% tolerance while offering improved availability as an active product. The upgrade substitutes (PAT0805E1143BST1 and TNPW0805114KBEEA) command higher pricing due to improved tolerance and power ratings.

Q: Are all substitutes RoHS3 compliant?

A: Yes. The main part and all three substitute parts are RoHS3 compliant, meeting current environmental and regulatory requirements.