RN732ATTD2002C50 Equivalent & Substitute Parts

Part Overview

The RN732ATTD2002C50 is a 20 kOhms ±0.25% thin film chip resistor in 0805 (2012 Metric) package rated at 0.1W (1/10W) power dissipation. Manufactured by KOA Speer Electronics, Inc., this component features moisture-resistant construction 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 requirements and procurement continuity.

Substiute Parts

RN732ATTD2002C50

KOA Speer Electronics, Inc.In Stock: 873RN732ATTD2002C50 Datasheet

Current PartRFQ

RN73R2ATTD2002C50

KOA Speer Electronics, Inc.In Stock: 765RN73R2ATTD2002C50 Datasheet

DirectRFQ

TNPW080520K0BETA

Vishay DaleIn Stock: 925TNPW080520K0BETA Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RN732ATTD2002C50 is determined by strict equivalence in the following parameters:

Critical Parameters (Must Match):

• Resistance value: 20 kOhms
• Package type: 0805 (2012 Metric)
• Composition: Thin Film
• Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
• Number of terminations: 2

Allowable Variation Parameters:

• Tolerance: Equal or tighter than ±0.25%
• Power rating: Equal to or greater than 0.1W
• Temperature coefficient: Equal to or lower absolute value
• Operating temperature range: Equal to or wider range
• Moisture resistance: Required feature

Two substitute parts meet these criteria with differing characteristics:

1. RN73R2ATTD2002C50 (Direct Manufacturer Substitute): Same manufacturer (KOA Speer Electronics), identical resistance and tolerance, higher power rating (0.125W), automotive-grade qualification, active product status.

2. TNPW080520K0BETA (Upgrade Substitute): Different manufacturer (Vishay Dale), tighter tolerance (±0.1%), higher power rating (0.125W), military-grade specification, active product status, tighter temperature coefficient (±25ppm/°C).

Parameter Comparison

Engineering Selection Recommendations

RN73R2ATTD2002C50 Selection Criteria:

Select this direct substitute when:

• Procurement from the original manufacturer (KOA Speer Electronics) is preferred for supply chain consistency
• Automotive-grade qualification (AEC-Q200) is required or beneficial for application reliability
• RoHS3 compliance is mandatory
• REACH unaffected status is required
• Operating temperature range of -55°C to 155°C is required
• Tolerance of ±0.25% meets circuit requirements
• Higher power dissipation capability (0.125W vs. 0.1W) is acceptable

TNPW080520K0BETA Selection Criteria:

Select this upgrade substitute when:

• Tighter tolerance (±0.1% vs. ±0.25%) improves circuit performance or measurement accuracy
• Lower temperature coefficient (±25ppm/°C vs. ±50ppm/°C) reduces thermal drift effects
• Military-grade specification aligns with application requirements
• Higher power rating (0.125W) provides additional thermal margin
• RoHS non-compliance and REACH affected status are acceptable within regulatory framework
• Operating temperature range of -55°C to 125°C is sufficient

Regulatory Compliance Consideration:

The RN73R2ATTD2002C50 maintains full RoHS3 and REACH unaffected compliance matching the original part. The TNPW080520K0BETA introduces RoHS non-compliance and REACH affected status, requiring regulatory assessment before selection in restricted applications.

Frequently Asked Questions (FAQ)

Q: Can RN73R2ATTD2002C50 be used as a direct replacement for RN732ATTD2002C50?

A: Yes. Both parts share identical resistance (20 kOhms), tolerance (±0.25%), package (0805), composition (thin film), and operating temperature range (-55°C to 155°C). The RN73R2ATTD2002C50 provides higher power rating (0.125W vs. 0.1W), which is compatible with circuits designed for the lower-rated original part. Active product status ensures ongoing availability.

Q: What are the key differences between RN73R2ATTD2002C50 and TNPW080520K0BETA?

A: Primary differences are: (1) Tolerance: TNPW is ±0.1% versus RN73R2 at ±0.25%; (2) Temperature coefficient: TNPW is ±25ppm/°C versus RN73R2 at ±50ppm/°C; (3) Manufacturer: KOA Speer vs. Vishay Dale; (4) Qualification: RN73R2 is automotive AEC-Q200, TNPW is military-grade; (5) Compliance: RN73R2 is RoHS3 compliant and REACH unaffected, TNPW is RoHS non-compliant and REACH affected; (6) Operating temperature upper limit: RN73R2 to 155°C, TNPW to 125°C.

Q: Is the 0805 package dimension identical across all three parts?

A: Yes. All three parts conform to 0805 (2012 Metric) package specification with dimensions 0.079" L x 0.049" W (2.00mm x 1.25mm). Height seated maximum is 0.024" (0.60mm) for RN732ATTD2002C50 and RN73R2ATTD2002C50, and 0.022" (0.55mm) for TNPW080520K0BETA. These minor height variations do not affect PCB layout compatibility.

Q: Which substitute part should be selected for high-precision applications?

A: TNPW080520K0BETA is suitable for high-precision applications due to tighter tolerance (±0.1%) and lower temperature coefficient (±25ppm/°C). However, regulatory compliance status must be verified before selection, as this part is RoHS non-compliant and REACH affected.

Q: Are both substitute parts available in Tape & Reel packaging?

A: Yes. Both RN73R2ATTD2002C50 and TNPW080520K0BETA are supplied in Tape & Reel (TR) packaging, suitable for automated assembly processes.

Q: What is the impact of the higher power rating in substitute parts?

A: The substitute parts are rated at 0.125W (1/8W) compared to the original 0.1W (1/10W). This higher rating provides additional thermal margin and allows the component to dissipate more power without exceeding temperature limits. Circuits designed for 0.1W operation remain fully compatible with 0.125W-rated components.