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Vishay General Semiconductor - Diodes Division TPSMB33A-1BHE3A/I
- Part No.:
- TPSMB33A-1BHE3A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB33A-1BHE3A/I.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,179
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Product details
Overview
TPSMB33A-1BHE3A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching transients and lightning-induced surges on power rails and signal lines. It features a 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 ICs in automotive power modules.
For engineers reviewing the TPSMB33A-1BHE3A/I datasheet, TPSMB33A-1BHE3A/I pinout, TPSMB33A-1BHE3A/I application, or TPSMB33A-1BHE3A/I equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, clamping performance under 10/1000 µs surge, and thermal derating above 25 °C ambient.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology with optimized junction passivation for stable high-temperature operation. Its unidirectional architecture provides low forward voltage drop (VF = 3.5 V at 50 A) and fast response time to transient events, enabling effective protection of downstream components without interfering with normal DC bias paths.
The device is rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), exhibits low incremental surge resistance, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its temperature coefficient of breakdown voltage is +0.089 %/°C, supporting predictable clamping behavior across -65 °C to +185 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 31.4 / 33.0 / 34.7 V at 1 mA - defines precise voltage threshold where avalanche conduction begins |
| VWM | 28.2 V - maximum continuous reverse voltage before leakage exceeds 1 μA, ensuring no false triggering |
| VC @ IPPM | 45.7 V at 13.1 A - clamped voltage during 10/1000 µs surge, limiting stress on protected ICs |
| PPPM | 600 W - peak pulse power handling capability under standard waveform, critical for automotive load-dump immunity |
| TJ max. | +185 °C - enables use in under-hood automotive environments and high-power industrial enclosures |
| Polarity | Unidirectional - allows integration into DC-biased circuits without reverse conduction path concerns |
| IFSM | 75 A - withstands 8.3 ms half-sine surge, supporting motor drive and solenoid switching applications |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to ground or low-side reference; completes clamping loop during transient |
| Cathode | Avalanche conduction terminal / protected line connection | Connected to line being protected (e.g., 24 V rail); conducts when VIN > VC |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable 185 °C operation and long-term reliability under thermal cycling in automotive ECUs |
| 600 W peak pulse power (10/1000 µs) | Meets ISO 7637-2 Pulse 5a/b requirements for 12 V/24 V vehicle systems |
| AEC-Q101 qualified (HE3 suffix) | Validated for automotive-grade production use with full traceability and qualification test reports |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns rise time), improving protection margin |
| MSL Level 1, 260 °C peak reflow | Supports standard SMT assembly without moisture sensitivity handling or baking |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Suppressing load-dump transients (up to 60 V, 100 ms) on 24 V battery-fed control modules in commercial vehicles. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp overvoltage before it reaches DC-DC converters and microcontrollers. Use Value: Limits peak voltage to ≤45.7 V during 13.1 A surge, preventing latch-up or gate oxide damage in protected ICs. | Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to ESD and relay-switching noise. IC Role / Device Role / Timing Role: TVS connected across signal and return lines to shunt fast transients while maintaining signal integrity below 28.2 V standby. Use Value: Clamps sub-100 ns ESD events to <45.7 V within nanoseconds, preserving ADC accuracy and isolator lifetime. |
| Consumer Power Adapter Input Stage | MOSFET Gate Driver Transient Suppression |
Use Scenario: Safeguarding primary-side controllers in universal-input AC/DC adapters against line surges and lightning-induced spikes. IC Role / Device Role / Timing Role: Mounted across bulk capacitor terminals to absorb energy from differential-mode surges before reaching PWM ICs. Use Value: Absorbs 600 W pulses without degradation, enabling compliance with IEC 61000-4-5 Level 3 (2 kV line-earth). | Use Scenario: Preventing gate oxide rupture in high-side N-channel MOSFETs driven by isolated gate drivers in motor inverters. IC Role / Device Role / Timing Role: Placed between gate and source to clamp Miller-induced voltage spikes during high dV/dt switching transitions. Use Value: Responds in <1 ns to limit gate-source voltage to ≤45.7 V, avoiding destructive gate breakdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/5AT | Lower peak pulse power (400 W), same SMB package, VBR = 35.6–39.4 V, VC = 53.3 V at 7.5 A | Less robust for automotive load-dump; suitable for consumer-grade 24 V systems with lower surge exposure | Select when cost sensitivity outweighs 600 W requirement and AEC-Q101 is not mandated |
| TPSMB33AHM3_A/I | Identical electrical specs; halogen-free molding compound and whisker-tested terminations (JESD 201 Class 2) | Required for RoHS+halogen-free compliance programs and high-reliability aerospace or medical subsystems | Choose when material compliance beyond RoHS (e.g., IEC 61249-2-21) is specified in BOM |
Compared with SMAJ33A-E3/5AT and TPSMB33AHM3_A/I, the TPSMB33A-1BHE3A/I offers superior 600 W surge handling and AEC-Q101 qualification out-of-box, making it the preferred choice for automotive power electronics where thermal stability to +185 °C and validated automotive qualification are mandatory.
Availability
TPSMB33A-1BHE3A/I is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and consumer power adapter designs requiring stable component supply, AEC-Q101 validation, and high-temperature reliability.
Supply support for TPSMB33A-1BHE3A/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 high-reliability and automotive-grade solutions.
The TPSMB series belongs to Vishay's PAR® (Protected Avalanche Rectifier) transient suppressor product line, engineered specifically for robust, high-temperature surge protection in automotive power distribution, industrial controls, and harsh-environment electronics.
FAQ
What is the clamping voltage of the TPSMB33A-1BHE3A/I under a 10/1000 µs surge?
The TPSMB33A-1BHE3A/I has a maximum clamping voltage (VC) of 45.7 V at 13.1 A peak pulse current under the standardized 10/1000 µs waveform. This value is measured per Figure 1 in the Vishay datasheet 88406 and reflects worst-case conduction during surge events. The TPSMB33A-1BHE3A/I maintains this clamping performance across its full operating temperature range due to its +0.089 %/°C VBR coefficient.
Is the TPSMB33A-1BHE3A/I AEC-Q101 qualified?
Yes, the TPSMB33A-1BHE3A/I is AEC-Q101 qualified. As confirmed in the Vishay datasheet 88406 (Revision 23-Jan-2024), the HE3 suffix denotes RoHS-compliant and AEC-Q101 qualified construction. Qualification includes temperature cycling, humidity testing, and surge endurance validation per the AEC-Q101 standard, making the TPSMB33A-1BHE3A/I suitable for automotive powertrain and body electronics.
What is the package type and mounting specification for TPSMB33A-1BHE3A/I?
The TPSMB33A-1BHE3A/I uses the SMB (DO-214AA) surface-mount package with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. It meets MSL Level 1 and supports 260 °C peak reflow. Mounting pad layout requires 0.205" × 0.205" (5.21 mm × 5.21 mm) copper pads per terminal, as specified in the mechanical drawings of datasheet 88406. The cathode is marked by a color band.
How does the TPSMB33A-1BHE3A/I differ from the TPSMB33AHM3_A/I variant?
The TPSMB33A-1BHE3A/I and TPSMB33AHM3_A/I share identical electrical specifications and AEC-Q101 qualification, but differ in material composition: the HM3 version uses halogen-free molding compound and meets JESD 201 Class 2 whisker resistance, while the HE3 version is RoHS-compliant but not halogen-free. Both are supplied in 13" tape-and-reel (I-pack), and the TPSMB33A-1BHE3A/I is functionally interchangeable where halogen-free compliance is not required.
What is the maximum operating junction temperature for TPSMB33A-1BHE3A/I?
The TPSMB33A-1BHE3A/I has a maximum operating junction temperature (TJ) of +185 °C, verified per the Absolute Maximum Ratings table in Vishay datasheet 88406. This rating enables reliable operation in under-hood automotive environments and high-power industrial enclosures. Derating curves (Figure 2) show that pulse power must be reduced linearly above 25 °C ambient to maintain safe TJ.
TPSMB33A-1BHE3A/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:
- Obsolete
- 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 (SMB)
TPSMB33A-1BHE3A/I FAQ
1.How can I place an order for TPSMB33A-1BHE3A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB33A-1BHE3A/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-1BHE3A/I reliable?
The price and inventory of TPSMB33A-1BHE3A/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-1BHE3A/I is usually 5 days.
3.What payment methods are accepted for TPSMB33A-1BHE3A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB33A-1BHE3A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB33A-1BHE3A/I?
TPSMB33A-1BHE3A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB33A-1BHE3A/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-1BHE3A/I?
For technical support, including TPSMB33A-1BHE3A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB33A-1BHE3A/I requirements.
6.How does Aetrix verify that TPSMB33A-1BHE3A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB33A-1BHE3A/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-1BHE3A/I meets industry standards.
7.What is the process for return or replacement of TPSMB33A-1BHE3A/I?
All TPSMB33A-1BHE3A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB33A-1BHE3A/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-1BHE3A/I part is unused and in its original packaging.
Return procedure for TPSMB33A-1BHE3A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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