TPSMP43HM3/84A Equivalent & Substitute Parts

Part Overview

The TPSMP43HM3/84A is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the 34.8V reverse standoff voltage range with a 61.9V maximum clamping voltage and 6.5A peak pulse current rating. The device is qualified to AEC-Q101 automotive standards and packaged in DO-220AA (SMP) format.

This part is classified as Obsolete. Locating equivalent or substitute components is necessary to support ongoing production requirements, maintenance operations, and design continuity where this TVS diode function remains critical to circuit protection.

Substiute Parts

TPSMP43HM3/84A

Vishay General Semiconductor - Diodes DivisionIn Stock: 1113TPSMP43HM3/84A Datasheet

Current PartRFQ

TPSMP43AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 5373TPSMP43AHM3_A/H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of TVS diodes is determined by electrical parameter compatibility within defined tolerances and mechanical package compatibility. The TPSMP43HM3/84A can be substituted with components that meet the following criteria:

• Identical package format: DO-220AA (SMP) surface mount
• Reverse standoff voltage within acceptable circuit design margins
• Breakdown voltage (minimum) compatible with circuit protection requirements
• Clamping voltage (maximum) that does not exceed protected circuit limits
• Peak pulse current rating sufficient for transient suppression duty
• Identical or superior thermal performance and operating temperature range
• Equivalent or superior automotive qualification and compliance certifications

The substitute part TPSMP43AHM3_A/H meets these criteria through equivalent electrical performance in the voltage and current domains, identical package geometry, and matching automotive-grade qualification.

Parameter Comparison

Engineering Selection Recommendations

The TPSMP43AHM3_A/H is an active production substitute for the obsolete TPSMP43HM3/84A. Both components share identical package geometry (DO-220AA surface mount), thermal performance envelope (-65°C to 185°C), and automotive qualification (AEC-Q101). Both are ROHS3 compliant.

The substitute part exhibits slightly higher reverse standoff voltage (36.8V vs. 34.8V) and breakdown voltage (40.9V vs. 38.7V), with correspondingly lower clamping voltage (59.3V vs. 61.9V). Peak pulse current capability is marginally higher (6.7A vs. 6.5A). These parameter shifts remain within the functional envelope of TVS diode substitution and do not introduce incompatibility with standard circuit protection applications.

Selection of TPSMP43AHM3_A/H is supported by active product status, ensuring long-term supply availability and manufacturing continuity. The component is available in Tape & Reel packaging format.

Frequently Asked Questions (FAQ)

Q: Can TPSMP43AHM3_A/H directly replace TPSMP43HM3/84A in existing designs?

A: Yes. Both components are unidirectional TVS diodes in DO-220AA surface mount package with identical thermal operating range and AEC-Q101 automotive qualification. Electrical parameters are compatible within standard TVS diode substitution tolerances.

Q: What is the significance of the higher reverse standoff voltage in the substitute part?

A: The substitute part (TPSMP43AHM3_A/H) has a reverse standoff voltage of 36.8V compared to 34.8V in the original. This represents a 2V increase and indicates the component will remain in standoff condition at slightly higher voltages before conducting. This is acceptable in TVS applications where the circuit is designed to tolerate the specified voltage range.

Q: Does the lower clamping voltage of the substitute part affect circuit protection?

A: The substitute part clamps at 59.3V maximum versus 61.9V for the original. The lower clamping voltage provides equivalent or improved transient suppression performance, as it limits voltage excursions to a lower threshold. This is favorable for circuit protection.

Q: Are there packaging differences between these parts?

A: Both components use identical DO-220AA (SMP) surface mount package geometry. The substitute part is supplied in Tape & Reel format, which is standard for high-volume production and automated assembly.

Q: What compliance certifications apply to both parts?

A: Both TPSMP43HM3/84A and TPSMP43AHM3_A/H are AEC-Q101 qualified for automotive applications and ROHS3 compliant. Both are REACH unaffected and classified under ECCN EAR99.