RN731ETTP4591F25 Equivalent & Substitute Parts

Part Overview

The RN731ETTP4591F25 is a 4.59 kOhms ±1% thin film chip resistor in 0402 (1005 Metric) package rated at 0.063W (1/16W) with moisture resistant construction. This part is currently obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity. The part operates across -55°C to 155°C and meets ROHS3 compliance requirements.

Substiute Parts

RN731ETTP4591F25

KOA Speer Electronics, Inc.In Stock: 947RN731ETTP4591F25 Datasheet

Current PartRFQ

RN73R1ETTP4591F25

KOA Speer Electronics, Inc.In Stock: 961RN73R1ETTP4591F25 Datasheet

DirectRFQ

TNPW04024K59BEED

Vishay DaleIn Stock: 820TNPW04024K59BEED Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the RN731ETTP4591F25 is determined by strict equivalence in the following parameters:

• Resistance value: 4.59 kOhms (exact match required)
• Package / Case: 0402 (1005 Metric) (exact match required)
• Composition: Thin Film (exact match required)
• Temperature Coefficient: ±25ppm/°C (exact match required)
• Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
• RoHS Status: ROHS3 Compliant (minimum requirement)

Tolerance, power rating, operating temperature range, and additional features may vary within acceptable engineering parameters for direct substitution. The following parts meet these substitution criteria:

1. Direct Equivalent: RN73R1ETTP4591F25 (KOA Speer Electronics, Inc.) — Active product with identical electrical and mechanical specifications plus automotive AEC-Q200 qualification
2. Upgrade Substitute: TNPW04024K59BEED (Vishay Dale) — Enhanced tolerance (±0.1%), higher power rating (0.13W), automotive AEC-Q200 qualification, and anti-sulfur feature

Parameter Comparison

Engineering Selection Recommendations

RN73R1ETTP4591F25 is the direct equivalent replacement for the obsolete RN731ETTP4591F25. Both parts are manufactured by KOA Speer Electronics, Inc., share identical electrical and mechanical specifications, and maintain ROHS3 compliance. The RN73R1ETTP4591F25 is currently in active production status and includes automotive AEC-Q200 qualification, making it suitable for applications requiring automotive-grade reliability.

TNPW04024K59BEED (Vishay Dale) functions as an upgrade substitute when enhanced performance is acceptable. This part offers tighter tolerance (±0.1% versus ±1%), higher power dissipation capability (0.13W versus 0.063W), extended operating temperature range (-55°C to 175°C versus -55°C to 155°C), and anti-sulfur feature. The TNPW04024K59BEED maintains identical package, resistance value, temperature coefficient, and moisture sensitivity level specifications. This part also carries AEC-Q200 automotive qualification and ROHS3 compliance.

Selection between these substitutes depends on application requirements: use RN73R1ETTP4591F25 for direct replacement with identical specifications, or TNPW04024K59BEED when improved tolerance, power handling, or extended temperature range provides design benefits.

Frequently Asked Questions (FAQ)

Q: Can RN73R1ETTP4591F25 be used as a direct replacement for RN731ETTP4591F25?

A: Yes. Both parts share identical resistance (4.59 kOhms), tolerance (±1%), power rating (0.063W), package (0402), composition (thin film), temperature coefficient (±25ppm/°C), and moisture sensitivity level (1). The RN73R1ETTP4591F25 is the active production equivalent with automotive AEC-Q200 qualification.

Q: What are the differences between RN73R1ETTP4591F25 and TNPW04024K59BEED?

A: Both parts maintain the same resistance value, package, and temperature coefficient. Key differences are: TNPW04024K59BEED offers ±0.1% tolerance (versus ±1%), 0.13W power rating (versus 0.063W), operating temperature to 175°C (versus 155°C), and includes anti-sulfur feature. Both are AEC-Q200 qualified and ROHS3 compliant.

Q: Is the 0402 package identical across all three parts?

A: Yes. All three parts use the 0402 (1005 Metric) package with identical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm) and maximum seated height of 0.016" (0.40mm).

Q: Can TNPW04024K59BEED replace RN731ETTP4591F25 in all applications?

A: TNPW04024K59BEED meets all core substitution parameters (resistance, package, composition, temperature coefficient, moisture sensitivity). The enhanced specifications (tighter tolerance, higher power rating, extended temperature range) make it compatible with applications designed for the original part. Applications with strict tolerance or power requirements may benefit from this upgrade.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. RN731ETTP4591F25, RN73R1ETTP4591F25, and TNPW04024K59BEED are all ROHS3 compliant with moisture sensitivity level 1 (unlimited).

Q: What is the significance of AEC-Q200 qualification on the substitute parts?

A: AEC-Q200 is an automotive industry qualification standard. Both RN73R1ETTP4591F25 and TNPW04024K59BEED carry this certification, indicating suitability for automotive applications requiring enhanced reliability and quality assurance. The original RN731ETTP4591F25 does not carry this qualification.