Equivalent & Substitute Parts for RN732BTTD3443D25

Part Overview

The RN732BTTD3443D25 is a 344 kOhms ±0.5% thin film chip resistor manufactured by KOA Speer Electronics, Inc., rated at 0.125W (1/8W) in a 1206 (3216 Metric) surface mount package. This component is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this resistor specification.

Substiute Parts

RN732BTTD3443D25

KOA Speer Electronics, Inc.In Stock: 754RN732BTTD3443D25 Datasheet

Current PartRFQ

RN73R2BTTD3443D25

KOA Speer Electronics, Inc.In Stock: 649RN73R2BTTD3443D25 Datasheet

DirectRFQ

PTN1206E3443BST1

Vishay Dale Thin FilmIn Stock: 1026PTN1206E3443BST1 Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RN732BTTD3443D25 are qualified based on the following criteria:

Mandatory Compatibility Parameters:

• Resistance value: 344 kOhms (exact match required)
• Package / Case: 1206 (3216 Metric) (physical and electrical compatibility)
• Composition: Thin Film (electrical performance characteristics)
• Temperature Coefficient: ±25ppm/°C (thermal stability)
• Operating Temperature Range: -55°C ~ 155°C (environmental suitability)
• Moisture Resistance: Required
• RoHS3 Compliance: Required
• MSL Rating: 1 (Unlimited) (handling and storage compatibility)

Allowable Variation Parameters:

• Tolerance: ±0.5% or tighter (±0.1% acceptable as upgrade)
• Power Rating: Equal or greater than 0.125W (0.25W and 0.4W acceptable)
• Manufacturer: Different manufacturers permitted if all mandatory parameters match
• Product Status: Active preferred over obsolete for long-term availability

Parameter Comparison

Engineering Selection Recommendations

RN73R2BTTD3443D25 (Direct Substitute - KOA Speer Electronics, Inc.)

This part qualifies as a direct substitute for the RN732BTTD3443D25. It maintains identical resistance value, tolerance, package dimensions, and thermal characteristics. The primary differences are increased power rating (0.25W versus 0.125W) and active product status. The higher power rating provides additional thermal margin without affecting circuit performance. Automotive AEC-Q200 qualification indicates enhanced reliability standards. This substitute is suitable for direct replacement in existing designs with no circuit modifications required.

PTN1206E3443BST1 (Upgrade Substitute - Vishay Dale Thin Film)

This part qualifies as an upgrade substitute for the RN732BTTD3443D25. It provides superior tolerance (±0.1% versus ±0.5%), increased power rating (0.4W versus 0.125W), and additional features including anti-sulfur coating and non-inductive construction. Physical package dimensions are compatible with identical length and width; maximum seated height increases by 0.005" (0.14mm). Active product status and ROHS3 compliance ensure long-term availability. This substitute is suitable for applications requiring tighter tolerance specifications or enhanced environmental protection.

Frequently Asked Questions (FAQ)

Q: Can RN73R2BTTD3443D25 be used as a direct replacement for RN732BTTD3443D25?

A: Yes. Both parts share identical resistance value (344 kOhms), tolerance (±0.5%), package (1206), composition (thin film), temperature coefficient (±25ppm/°C), and operating temperature range (-55°C ~ 155°C). The RN73R2BTTD3443D25 features higher power rating (0.25W versus 0.125W), which provides additional thermal capability without affecting circuit operation. No design modifications are required.

Q: What is the difference between the main part and PTN1206E3443BST1?

A: The PTN1206E3443BST1 provides tighter tolerance (±0.1% versus ±0.5%), higher power rating (0.4W versus 0.125W), and additional features (anti-sulfur coating, non-inductive construction). All other critical parameters including resistance value, package, temperature coefficient, and operating range remain identical. The maximum seated height increases by 0.005" (0.14mm), which is negligible for most PCB layouts.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. Both substitute parts (RN73R2BTTD3443D25 and PTN1206E3443BST1) are ROHS3 compliant, matching the compliance status of the main part RN732BTTD3443D25.

Q: What is the MSL rating for these resistors?

A: All three parts carry MSL Rating 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling. Standard component storage conditions apply.

Q: Can PTN1206E3443BST1 be used in high-frequency applications?

A: The PTN1206E3443BST1 includes non-inductive construction, which reduces parasitic inductance compared to standard thin film resistors. This characteristic makes it suitable for high-frequency circuit applications where inductance must be minimized.

Q: Why is the main part RN732BTTD3443D25 marked as obsolete?

A: Product status reflects manufacturer discontinuation. The substitute parts RN73R2BTTD3443D25 and PTN1206E3443BST1 maintain active status, ensuring continued availability for new designs and production requirements.

Q: Are there any PCB layout considerations when substituting PTN1206E3443BST1?

A: The PTN1206E3443BST1 has a maximum seated height of 0.033" (0.84mm) compared to 0.028" (0.70mm) for the main part. This 0.005" (0.14mm) difference is typically accommodated within standard PCB design tolerances and does not require layout modifications for most applications.