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Vishay General Semiconductor - Diodes Division TPSMB33AHE3_A/I
- Part No.:
- TPSMB33AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB33AHE3_A/I.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
TPSMB33AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount 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 1 mA), 28.2 V stand-off voltage (VWM), 45.7 V 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 - used in automotive sensor protection and industrial power rail surge suppression.
For engineers reviewing the TPSMB33AHE3_A/I datasheet, TPSMB33AHE3_A/I pinout, TPSMB33AHE3_A/I application, or TPSMB33AHE3_A/I equivalent, this page delivers verified electrical specs, thermal derating behavior, AEC-Q101 qualification status, RoHS-compliant construction, and real-world clamping performance under repetitive surge conditions.
Technical Context
The TPSMB33AHE3_A/I employs passivated anisotropic rectifier technology to deliver stable clamping with low incremental surge resistance and excellent response time (<1 ns). Its unidirectional polarity enables robust reverse-biased transient suppression on DC rails without forward conduction interference.
Rated for 75 A non-repetitive forward surge (8.3 ms half-sine), it supports high-energy transient events while maintaining <3.5 V forward voltage at 50 A. Thermal stability is ensured by TJ = –65 °C to +185 °C operation and MSL Level 1 moisture sensitivity rating (peak reflow 260 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 31.4 / 33.0 / 34.7 V at 1 mA - defines reliable turn-on threshold for transient clamping |
| VWM | 28.2 V - maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VC @ IPPM | 45.7 V at 13.1 A - clamped voltage during 10/1000 µs surge, limiting downstream stress |
| PPPM | 600 W - peak pulse power handling capability under standardized surge waveform |
| TJ max. | +185 °C - enables use in under-hood automotive and high-temperature industrial environments |
| Polarity | Unidirectional - protects against negative-going transients only; cathode band denotes terminal |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.205" × 0.220" footprint and MSL Level 1 rating |
Pinout & Package
SMB (DO-214AA) package with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; cathode indicated by color band. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient clamp output node | Connected to protected line; conducts during overvoltage to shunt energy to ground |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| 185 °C junction rating | Enables deployment in engine control units, ADAS sensors, and other high-ambient-temperature locations |
| 600 W peak pulse power | Withstands ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 surge waveforms without degradation |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage exposure to downstream ICs such as microcontrollers and CAN transceivers |
| MSL Level 1 | Allows standard SMT reflow without pre-baking; compatible with high-volume automated assembly |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting LIN/CAN bus nodes and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between signal line and chassis ground to clamp spikes below IC absolute maximum ratings. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V sensor interface ICs during 12 V/24 V system surges up to 45.7 V clamped level. | Use Scenario: Safeguarding 24 V DC input stages of PLC I/O modules and motor drive controllers against lightning-induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main supply rail, coordinated with upstream fuses and downstream LDOs. Use Value: Limits transient voltage to ≤45.7 V during 600 W surges, preserving integrity of 36 V-rated input capacitors and PMICs. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Secondary-side surge protection in AC/DC adapters for smart home devices, guarding against mains-borne transients entering low-voltage DC outputs. IC Role / Device Role / Timing Role: Unidirectional TVS placed across secondary-side bulk capacitor to absorb residual common-mode surges after primary-side MOVs. Use Value: Maintains safe 28.2 V working voltage margin while clamping fast-rising transients to 45.7 V within 1 ns response time. | Use Scenario: Protecting Ethernet PHY interfaces and RS-485 transceivers in base station equipment exposed to induced surges on long cable runs. IC Role / Device Role / Timing Role: Point-of-entry TVS on differential pair or single-ended bias line, referenced to local ground plane. Use Value: Ensures compliance with IEC 61000-4-5 Level 3 (2 kV/1 kA) by limiting clamped voltage below transceiver breakdown thresholds. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ33A | Same SMB package, identical VBR (31.4–34.7 V), but lower PPPM = 600 W (same rating), no AEC-Q101 qualification stated in standard datasheet | Not automotive-qualified; suitable for commercial/industrial use where AEC-Q101 is not mandated | Select when cost sensitivity outweighs automotive qualification requirements |
| SMCJ33A | Larger SMC (DO-214AB) package, same electrical specs, higher thermal mass, PPPM = 1500 W - physically incompatible with SMB footprints | Used where higher surge endurance or board-level thermal spreading is needed; requires PCB redesign | Choose only if layout allows larger footprint and higher surge margin is critical |
Compared with SMBJ33A and SMCJ33A, the TPSMB33AHE3_A/I uniquely combines AEC-Q101 qualification, SMB footprint compatibility, and 185 °C operation - making it the preferred choice for space-constrained automotive modules requiring validated high-temperature reliability.
Availability
TPSMB33AHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor protection, industrial power rail clamping, consumer power adapter input, and telecom line interface protection requiring stable component supply and full traceability.
Supply support for TPSMB33AHE3_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, MOSFETs, and protection devices with emphasis on reliability, thermal performance, and automotive qualification.
The TPSMB series belongs to Vishay's PAR® (Protected Anisotropic Rectifier) transient voltage suppressor product line, engineered specifically for high-temperature, high-reliability surge protection in automotive and industrial systems.
FAQ
What is the clamping voltage of the TPSMB33AHE3_A/I at its rated peak pulse current?
The TPSMB33AHE3_A/I has a maximum clamping voltage (VC) of 45.7 V at 13.1 A peak pulse current (IPPM) under the 10/1000 µs waveform condition. This value is measured per JEDEC standards and ensures downstream components remain within safe operating limits during surge events. The TPSMB33AHE3_A/I maintains consistent clamping performance across its full operating temperature range due to its low temperature coefficient (0.089 %/°C).
Is the TPSMB33AHE3_A/I qualified for automotive applications?
Yes, the TPSMB33AHE3_A/I is AEC-Q101 qualified, as confirmed by Vishay's documentation and ordering code suffix "HE3", which denotes RoHS-compliant and AEC-Q101 qualified construction. It meets rigorous stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - making the TPSMB33AHE3_A/I suitable for under-hood and ADAS-related applications.
What does the "HE3" and "_A/I" suffix mean in TPSMB33AHE3_A/I?
The "HE3" suffix indicates RoHS-compliant, matte tin-plated leads, and AEC-Q101 qualification. The "_A/I" denotes revision A and packaging in 13-inch tape-and-reel format with 3200 units per reel. This distinguishes it from "_A/H" (7-inch reel, 750 units) and confirms full compliance with JESD201 Class 2 whisker resistance and J-STD-020 reflow profiles.
Can the TPSMB33AHE3_A/I replace older SMBJ33A parts in existing designs?
The TPSMB33AHE3_A/I shares identical electrical specifications and SMB (DO-214AA) mechanical outline with SMBJ33A, enabling direct drop-in replacement where AEC-Q101 qualification and 185 °C operation are required. However, designers must verify that the application's thermal environment and qualification requirements align with the enhanced capabilities of the TPSMB33AHE3_A/I before substitution.
What is the maximum reverse leakage current of the TPSMB33AHE3_A/I at 25 °C and 150 °C?
At 25 °C and VWM = 28.2 V, the TPSMB33AHE3_A/I exhibits maximum reverse leakage (IR) of 1 µA. At elevated temperature (TJ = 150 °C), leakage increases to 5 µA - still well within safe margins for most signal and power rail protection applications. This controlled leakage behavior is maintained across the full -65 °C to +185 °C operating range.
TPSMB33AHE3_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 (SMB)
TPSMB33AHE3_A/I FAQ
1.How can I place an order for TPSMB33AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB33AHE3_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 TPSMB33AHE3_A/I reliable?
The price and inventory of TPSMB33AHE3_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 TPSMB33AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB33AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB33AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB33AHE3_A/I?
TPSMB33AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB33AHE3_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 TPSMB33AHE3_A/I?
For technical support, including TPSMB33AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB33AHE3_A/I requirements.
6.How does Aetrix verify that TPSMB33AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB33AHE3_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 TPSMB33AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB33AHE3_A/I?
All TPSMB33AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB33AHE3_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 TPSMB33AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMB33AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB33AHE3_A/I Tags
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