TPSMB9.1HE3/52T Equivalent & Substitute Parts

Part Overview

The TPSMB9.1HE3/52T is a unidirectional 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 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

TPSMB9.1HE3/52T

Vishay General Semiconductor - Diodes DivisionIn Stock: 1092TPSMB9.1HE3/52T Datasheet

Current PartRFQ

TPSMB9.1AHE3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 1188TPSMB9.1AHE3_A/H Datasheet

DirectRFQ

PTVS8V0P1UP,115

Nexperia USA Inc.In Stock: 4271PTVS8V0P1UP,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the TPSMB9.1HE3/52T is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 7.37V nominal operating point
• Voltage - Clamping (Max) @ Ipp: 13.8V maximum clamp voltage
• Current - Peak Pulse (10/1000µs): 43.5A minimum pulse current handling
• Power - Peak Pulse: 600W dissipation capability
• Type: Zener diode, unidirectional configuration

Mechanical & Environmental Criteria:

• Mounting Type: Surface Mount
• Package / Case: DO-214AA (SMB) or equivalent footprint-compatible packages
• Operating Temperature: -65°C ~ 185°C (TJ) or compatible range
• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant

Substitute parts must maintain electrical performance within the specified voltage and current parameters while meeting automotive qualification standards.

Parameter Comparison

Engineering Selection Recommendations

TPSMB9.1AHE3_A/H (Vishay): This substitute maintains identical package geometry (DO-214AA/SMB) and operating temperature range (-65°C ~ 185°C TJ) as the main part. Both components are manufactured by Vishay and share the same base product number (TPSMB9.1). The substitute is currently in active production status, ensuring long-term availability. Electrical parameters remain within acceptable tolerance: clamping voltage is 0.4V lower (13.4V vs 13.8V), and peak pulse current is 1.3A higher (44.8A vs 43.5A). Both parts maintain AEC-Q101 automotive qualification and ROHS3 compliance.

PTVS8V0P1UP,115 (Nexperia): This substitute is manufactured by Nexperia and offers active product status with higher inventory availability (4200 pcs). Electrical performance is comparable: clamping voltage is 0.2V lower (13.6V vs 13.8V), and peak pulse current is 0.6A lower (44.1A vs 43.5A). The component maintains 600W peak pulse power and AEC-Q101 qualification. However, the package differs (SOD-128 vs DO-214AA/SMB), requiring PCB layout modification. Operating temperature range is narrower (-55°C ~ 150°C TA vs -65°C ~ 185°C TJ), which may limit use in extreme temperature applications.

Frequently Asked Questions (FAQ)

Q: Can TPSMB9.1AHE3_A/H be used as a direct replacement for TPSMB9.1HE3/52T?

A: Yes. Both components share identical package geometry (DO-214AA/SMB), operating temperature range (-65°C ~ 185°C), and automotive qualification (AEC-Q101). Electrical parameters are within acceptable tolerance for TVS diode applications. The substitute is currently in active production.

Q: What are the key differences between TPSMB9.1AHE3_A/H and PTVS8V0P1UP,115?

A: The primary difference is package type: TPSMB9.1AHE3_A/H uses DO-214AA (SMB), while PTVS8V0P1UP,115 uses SOD-128. This requires different PCB footprints. Additionally, PTVS8V0P1UP,115 has a narrower operating temperature range (-55°C ~ 150°C TA vs -65°C ~ 185°C TJ). Electrical performance is comparable across both substitutes.

Q: Is the SOD-128 package (PTVS8V0P1UP,115) compatible with existing DO-214AA (SMB) PCB layouts?

A: No. SOD-128 and DO-214AA (SMB) are different package types with different footprints. PCB layout modification is required if selecting PTVS8V0P1UP,115.

Q: Do all substitute parts maintain automotive qualification?

A: Yes. Both TPSMB9.1AHE3_A/H and PTVS8V0P1UP,115 are AEC-Q101 qualified and automotive-grade components, matching the qualification level of the main part.

Q: What is the impact of the narrower operating temperature range in PTVS8V0P1UP,115?

A: PTVS8V0P1UP,115 operates from -55°C ~ 150°C (TA), compared to -65°C ~ 185°C (TJ) for the main part. This limits its use in applications requiring operation below -55°C or above 150°C. Verify application temperature requirements before selection.

Q: Are all parts RoHS3 compliant?

A: Yes. TPSMB9.1HE3/52T, TPSMB9.1AHE3_A/H, and PTVS8V0P1UP,115 are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.