TPSMP33AHM3/85A Equivalent & Substitute Parts

Part Overview

The TPSMP33AHM3/85A is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for surface mount applications in automotive-grade circuits requiring transient voltage protection. The part operates with a reverse standoff voltage of 28.2V and provides clamping at 45.7V with a peak pulse current capability of 8.8A. The TPSMP33AHM3/85A carries an obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

TPSMP33AHM3/85A

Vishay General Semiconductor - Diodes DivisionIn Stock: 918TPSMP33AHM3/85A Datasheet

Current PartRFQ

TPSMP33AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1012TPSMP33AHM3_A/I Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPSMP33AHM3/85A is determined by strict equivalence across electrical and mechanical parameters. The following criteria establish valid substitutes:

Critical Matching Parameters:

• Voltage - Reverse Standoff (Typ): 28.2V
• Voltage - Breakdown (Min): 31.4V
• Voltage - Clamping (Max) @ Ipp: 45.7V
• Current - Peak Pulse (10/1000µs): 8.8A
• Power - Peak Pulse: 400W
• Operating Temperature Range: -65°C to 185°C (TJ)
• Package / Case: DO-220AA (SMP)
• Mounting Type: Surface Mount
• Grade: Automotive
• Qualification: AEC-Q101

The TPSMP33AHM3_A/I variant meets all electrical specifications and mechanical requirements. The primary distinction is packaging format (Tape & Reel versus bulk) and product status (Active versus Obsolete).

Parameter Comparison

Engineering Selection Recommendations

The TPSMP33AHM3_A/I is a direct functional equivalent to the TPSMP33AHM3/85A. Both parts share identical electrical specifications, thermal performance, and automotive-grade certifications including AEC-Q101 qualification. The TPSMP33AHM3_A/I maintains active product status with current manufacturing support, whereas the TPSMP33AHM3/85A is obsolete. For new designs and ongoing production, the TPSMP33AHM3_A/I is the appropriate selection. The packaging difference (Tape & Reel versus bulk) does not affect electrical or mechanical compatibility and is determined by procurement and assembly requirements.

Frequently Asked Questions (FAQ)

Q: Are the TPSMP33AHM3/85A and TPSMP33AHM3_A/I electrically identical?

A: Yes. Both parts have identical voltage ratings (28.2V reverse standoff, 31.4V breakdown minimum, 45.7V clamping maximum), current ratings (8.8A peak pulse), power dissipation (400W peak pulse), and operating temperature range (-65°C to 185°C). They are functionally equivalent.

Q: What is the difference between these two part numbers?

A: The primary differences are product status and packaging format. The TPSMP33AHM3/85A is obsolete and supplied in bulk packaging. The TPSMP33AHM3_A/I is active and supplied in Tape & Reel format. Both use the DO-220AA (SMP) package.

Q: Can I use TPSMP33AHM3_A/I as a direct replacement in existing designs?

A: Yes. The TPSMP33AHM3_A/I is a direct substitute. It maintains the same DO-220AA surface mount package, electrical specifications, and automotive-grade certifications. No circuit modifications are required.

Q: Are both parts AEC-Q101 qualified?

A: Yes. Both the TPSMP33AHM3/85A and TPSMP33AHM3_A/I carry AEC-Q101 automotive qualification and are ROHS3 compliant.

Q: Does packaging format affect circuit performance?

A: No. Tape & Reel and bulk packaging formats do not affect electrical or mechanical performance. The packaging difference is relevant only to procurement, storage, and assembly processes.