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Vishay General Semiconductor - Diodes Division TPSMB33A-1BHE3_A/I
- Part No.:
- TPSMB33A-1BHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB33A-1BHE3_A/I.pdf
- Description:
- TVS DIODE 600W SMB DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,287
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Product details
Overview
TPSMB33A-1BHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features 33 V breakdown voltage (VBR = 31.4–34.7 V at IT = 1 mA), 28.2 V stand-off voltage (VWM), 45.7 V maximum clamping voltage (VC) at 13.1 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature. It is used to protect MOSFETs and sensor signal lines in automotive ECUs.
For engineers reviewing the TPSMB33A-1BHE3_A/I datasheet, TPSMB33A-1BHE3_A/I pinout, TPSMB33A-1BHE3_A/I application, or TPSMB33A-1BHE3_A/I equivalent, key selection criteria include unidirectional polarity, SMB package thermal and mechanical compatibility, AEC-Q101 qualification status, TJ = 185 °C rating, and clamping performance under 10/1000 µs surge conditions.
Technical Context
The TPSMB33A-1BHE3_A/I employs passivated anisotropic rectifier technology optimized for high-temperature stability and low incremental surge resistance. Its junction passivation enables reliable operation at TJ = 185 °C and supports AEC-Q101 qualification for automotive use.
It delivers 45.7 V clamping voltage at 13.1 A IPPM with 10/1000 µs waveform, exhibits <1 µA reverse leakage at VWM = 28.2 V (TA = 25 °C), and maintains stable VBR over temperature with αT = 0.089 %/°C - enabling predictable protection behavior across industrial and automotive ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 31.4 / 33.0 / 34.7 V at IT = 1 mA - defines precise voltage threshold where avalanche conduction begins |
| VWM | 28.2 V - maximum continuous reverse operating voltage before significant leakage |
| VC @ IPPM | 45.7 V at 13.1 A - clamped voltage seen by protected circuit during worst-case transient |
| PPPM | 600 W (10/1000 µs) - peak surge energy handling capability without failure |
| TJ max. | +185 °C - enables placement near hot components (e.g., power stages, engine compartments) |
| Polarity | Unidirectional - protects against positive transients only; cathode marked with band |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.220" x 0.130" footprint and MSL Level 1 rating |
Pinout & Package
Package: SMB (DO-214AA), molded case with matte tin-plated leads, UL 94 V-0 rated compound, cathode indicated by color band. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per JEDEC standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry during forward conduction; connected to protected line ground or low-side reference | Provides return path for surge current during clamping; must be routed with low-inductance trace to ground plane |
| Cathode | Current exit during reverse-biased clamping; connected to protected line (e.g., 24 V rail, sensor output) | Acts as the "protected node" input; color band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivated anisotropic rectifier design | Enables stable 185 °C operation and long-term reliability under thermal cycling in automotive under-hood environments |
| 600 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 1/2a/5a transients without degradation when properly mounted |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive electronics per stress test requirements including HTGB, HTRB, and temperature cycling |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage exposure to downstream ICs such as CAN transceivers or microcontrollers |
| MSL Level 1, 260 °C reflow compatible | Supports standard lead-free SMT assembly without pre-baking or special handling |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed control modules (e.g., body control units) from load dump and inductive switching spikes. IC Role / Device Role / Timing Role: TVS diode placed between power rail and chassis ground to clamp transients above 33 V. Use Value: Limits voltage excursion to ≤45.7 V during 13.1 A surges, preventing damage to 36 V-rated DC-DC converters and MCU power supplies. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Unidirectional TVS installed on sensor output line to absorb ESD and cable discharge events. Use Value: Clamps fast transients (e.g., IEC 61000-4-2 ±8 kV contact) while maintaining <1 µA leakage at 28.2 V, preserving signal integrity. |
| Consumer Power Adapter Input Stage | Telecom DC Power Interface |
Use Scenario: Secondary-side overvoltage suppression in universal-input AC/DC adapters supplying USB-PD or PoE-powered devices. IC Role / Device Role / Timing Role: Standoff device across regulated 12 V or 19 V output to prevent latch-up during surge events. Use Value: Withstands repetitive 600 W pulses at 0.01% duty cycle, ensuring robustness across adapter lifetime without derating. | Use Scenario: Front-end protection for -48 V DC telecom power distribution boards feeding base station radios. IC Role / Device Role / Timing Role: Unidirectional clamping element on -48 V supply rail referenced to system ground. Use Value: Operates reliably at -65 to +185 °C, meeting NEBS GR-1089 Class 3 environmental requirements for outdoor cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A-E3/52 (Vishay) | Same SMB package, identical VBR/VC, but rated for 600 W with 10/1000 µs and not AEC-Q101 qualified | Targeted at industrial/commercial rather than automotive applications | Select TPSMB33A-1BHE3_A/I when AEC-Q101 compliance and 185 °C operation are mandatory |
| 1.5SMC33A (ON Semiconductor) | Same VBR range and SMB package, but rated for 1500 W peak power and higher IPPM (38.3 A); no AEC-Q101 listing in standard grade | Higher surge margin suitable for harsher transients, but lacks automotive qualification documentation | Choose TPSMB33A-1BHE3_A/I for production automotive programs requiring certified qualification evidence |
Compared with SMBJ33A-E3/52 and 1.5SMC33A, the TPSMB33A-1BHE3_A/I uniquely combines AEC-Q101 qualification, 185 °C junction rating, and documented 600 W clamping performance - making it the preferred choice for safety-critical automotive subsystems where long-term reliability under thermal stress is non-negotiable.
Availability
TPSMB33A-1BHE3_A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom power distribution systems requiring stable component supply, AEC-Q101 compliance, and high-temperature operational assurance.
Supply support for TPSMB33A-1BHE3_A/I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, high-temperature performance, and automotive-grade qualification.
The TPSMB series is part of Vishay's PAR® (Protected Anisotropic Rectifier) platform, engineered specifically for robust transient suppression in automotive and industrial environments where extended temperature operation and AEC-Q101 validation are required.
FAQ
What is the exact breakdown voltage range for TPSMB33A-1BHE3_A/I?
The TPSMB33A-1BHE3_A/I has a guaranteed breakdown voltage (VBR) range of 31.4 V to 34.7 V at test current IT = 1 mA, with nominal value 33.0 V. This specification is verified per ANSI/IEEE C62.35 and measured after 300 µs square-wave pulse application, ensuring consistent avalanche initiation across production lots.
Is TPSMB33A-1BHE3_A/I AEC-Q101 qualified?
Yes, TPSMB33A-1BHE3_A/I is AEC-Q101 qualified. The HE3 suffix denotes RoHS-compliant and AEC-Q101 qualified construction, validated per stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling - confirming suitability for automotive under-hood and powertrain applications.
What is the maximum clamping voltage of TPSMB33A-1BHE3_A/I and at what current?
The TPSMB33A-1BHE3_A/I has a maximum clamping voltage (VC) of 45.7 V at peak pulse current (IPPM) = 13.1 A, tested with 10/1000 µs waveform. This value represents the upper limit of voltage imposed on the protected circuit during worst-case transient events, directly supporting design margin calculations for downstream 36 V-rated components.
Does TPSMB33A-1BHE3_A/I have bidirectional polarity?
No, TPSMB33A-1BHE3_A/I is unidirectional only. Polarity is marked by a cathode band on the SMB package body. It conducts and clamps only for positive transients relative to its cathode; for bidirectional protection, a separate device or dual-diode configuration is required.
What is the package type and mounting requirement for TPSMB33A-1BHE3_A/I?
TPSMB33A-1BHE3_A/I uses the SMB (DO-214AA) package with matte tin-plated leads. Per datasheet specifications, it requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads at each terminal for optimal thermal dissipation and surge current handling, and is rated MSL Level 1 for lead-free reflow up to 260 °C peak.
TPSMB33A-1BHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 28.2V
- Voltage - Breakdown (Min):
- 31.4V
- Voltage - Clamping (Max) @ Ipp:
- 45.7V
- Current - Peak Pulse (10/1000µs):
- 13.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
TPSMB33A-1BHE3_A/I FAQ
1.How can I place an order for TPSMB33A-1BHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB33A-1BHE3_A/I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TPSMB33A-1BHE3_A/I reliable?
The price and inventory of TPSMB33A-1BHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB33A-1BHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB33A-1BHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB33A-1BHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB33A-1BHE3_A/I?
TPSMB33A-1BHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB33A-1BHE3_A/I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TPSMB33A-1BHE3_A/I?
For technical support, including TPSMB33A-1BHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB33A-1BHE3_A/I requirements.
6.How does Aetrix verify that TPSMB33A-1BHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB33A-1BHE3_A/I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPSMB33A-1BHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB33A-1BHE3_A/I?
All TPSMB33A-1BHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB33A-1BHE3_A/I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TPSMB33A-1BHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMB33A-1BHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB33A-1BHE3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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