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Vishay General Semiconductor - Diodes Division TPSMC33AHE3_B/H
- Part No.:
- TPSMC33AHE3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
TPSMC33AHE3_B/H.pdf
- Description:
- TVS DIODE 28.2VWM 45.7VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,876
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Product details
Overview
TPSMC33AHE3_B/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on power and signal lines. It features a 33 V nominal breakdown voltage (VBR = 31.4–34.7 V at 1 mA), 28.2 V stand-off voltage (VWM), 45.7 V maximum clamping voltage (VC) at 32.8 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive power supply rails and industrial sensor interfaces.
For engineers reviewing the TPSMC33AHE3_B/H datasheet, TPSMC33AHE3_B/H pinout, TPSMC33AHE3_B/H application, or TPSMC33AHE3_B/H equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C junction temperature rating, low 1.0 μA reverse leakage at VWM, unidirectional polarity, and compatibility with lead-free reflow per J-STD-020 MSL level 1.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping under repetitive surge stress and high-temperature operation up to 185 °C. Its junction passivation enables robust performance in automotive under-hood environments and industrial control systems exposed to load-switching transients.
The device operates exclusively in unidirectional mode with cathode-band polarity marking, delivers 45.7 V clamping at 32.8 A (10/1000 μs), and maintains <1.0 μA reverse leakage at 28.2 V stand-off voltage and 150 °C junction temperature - critical for low-power sensor line protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 31.4 / 33.0 / 34.7 V at 1 mA - defines reliable conduction onset during overvoltage events |
| VWM | 28.2 V - maximum continuous working voltage without significant leakage |
| VC @ IPPM | 45.7 V at 32.8 A - limits downstream IC voltage stress during 1500 W surge |
| PPPM | 1500 W (10/1000 μs) - handles high-energy transients from inductive switching |
| TJ max. | 185 °C - supports under-hood automotive and high-ambient industrial use |
| Leakage @ VWM, 150 °C | 1.0 μA - ensures minimal power loss in always-on sensor circuits |
| AEC-Q101 qualified | Yes - validated for automotive electronic modules per stress test requirements |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, RoHS-compliant and halogen-free (HE3 suffix), MSL level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal in forward bias; connected to protected circuit ground or low-side return | Completes clamping path during positive transients when cathode is at higher potential |
| Cathode | Current exit terminal in forward bias; marked by color band; connected to line being protected | Acts as the reference node for clamping - absorbs surge energy into ground via anode |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Withstands high-energy load dump and inductive kick events without degradation |
| 185 °C maximum junction temperature | Enables deployment in engine control units and industrial motor drives without derating |
| AEC-Q101 qualification (HE3 suffix) | Validated for automotive-grade reliability including temperature cycling and HTRB |
| Low 1.0 μA leakage at 150 °C | Maintains signal integrity and battery life in always-powered automotive sensors |
| MSL level 1 moisture sensitivity | Allows standard SMT reflow without baking, reducing manufacturing overhead |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 24 V supply inputs in body control modules against ISO 7637-2 pulse 1 and pulse 2b transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between VBAT and chassis ground to limit voltage excursions. Use Value: Clamps to 45.7 V at 32.8 A, preventing damage to downstream DC/DC converters rated for 40 V input max. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop) in factory automation pressure sensors. IC Role / Device Role / Timing Role: Low-leakage TVS mounted across signal and ground to suppress ESD and cable discharge events. Use Value: 1.0 μA leakage at 28.2 V and 150 °C preserves accuracy of microamp-level sensor signals. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Driver Protection |
Use Scenario: Shielding PoE-powered network switches from lightning-induced surges on 48 V DC input rails. IC Role / Device Role / Timing Role: Primary surge suppression stage before upstream fuse and filter inboard of DC-DC stage. Use Value: 1500 W rating handles multi-kV induced transients while maintaining <10 ns response time. |
Use Scenario: Suppressing back-EMF spikes from brushed DC motors in smart home vacuum cleaners. IC Role / Device Role / Timing Role: Mounted across motor terminals to clamp inductive flyback voltage during PWM commutation. Use Value: 185 °C rating accommodates enclosure temperatures exceeding 100 °C during sustained motor operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/5A (Vishay) | Lower PPPM (400 W), SMA package (smaller footprint), same VBR range, non-AEC-Q101 | Suitable for cost-sensitive consumer electronics; not qualified for automotive under-hood use | Select when space is constrained and 1500 W surge margin is unnecessary |
| 1.5KE33A (ON Semiconductor) | Through-hole DO-201 package, 1500 W rating, same VBR/VC, no AEC-Q101, higher VF | Used in legacy industrial power supplies where SMT is not required | Select for through-hole assembly or where board-level mechanical robustness outweighs SMT density needs |
Compared with SMAJ33A-E3/5A and 1.5KE33A, TPSMC33AHE3_B/H uniquely combines AEC-Q101 qualification, SMC surface-mount form factor, and full 1500 W surge capability - making it the only option qualified for next-generation automotive ADAS power domains requiring both high reliability and high-density layout.
Availability
TPSMC33AHE3_B/H is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLC I/O modules, telecom power supplies, and consumer appliance motor controls requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for TPSMC33AHE3_B/H 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 high-reliability and automotive-grade performance.
The TPSMC33AHE3_B/H belongs to Vishay's PAR® series of high-power surface-mount TVS diodes, engineered specifically for demanding transient suppression in automotive, industrial, and telecom infrastructure where thermal stability and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of the TPSMC33AHE3_B/H at its rated peak pulse current?
The TPSMC33AHE3_B/H has a maximum clamping voltage (VC) of 45.7 V when subjected to its rated peak pulse current of 32.8 A using the standard 10/1000 μs waveform. This value is measured per JEDEC standards and ensures downstream components see limited overvoltage stress during surge events. The TPSMC33AHE3_B/H maintains this clamping performance across its full operating temperature range up to 185 °C junction temperature.
Is the TPSMC33AHE3_B/H qualified for automotive applications?
Yes, the TPSMC33AHE3_B/H is AEC-Q101 qualified - explicitly confirmed in the Vishay datasheet (Document Number: 88407, Revision: 19-Jan-2024). Its HE3 suffix denotes RoHS-compliant, AEC-Q101 qualified construction. The TPSMC33AHE3_B/H is rated for junction temperatures up to 185 °C and meets stringent automotive reliability tests including temperature cycling, highly accelerated life testing (HALT), and humidity testing - making it suitable for engine control, body electronics, and ADAS power domains.
What does the "HE3" and "B/H" suffix mean in TPSMC33AHE3_B/H?
The "HE3" suffix indicates RoHS-compliant, AEC-Q101 qualified construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 2 whisker resistance. The "B/H" denotes packaging: "B" is the revision code, and "H" specifies 7-inch plastic tape-and-reel packaging with 850 units per reel. This configuration ensures compatibility with high-speed SMT placement equipment and supports automotive traceability requirements for the TPSMC33AHE3_B/H.
How does the TPSMC33AHE3_B/H compare to bidirectional TVS diodes in surge protection?
The TPSMC33AHE3_B/H is unidirectional only, meaning it protects against positive transients relative to ground - ideal for DC power lines where polarity is fixed. Unlike bidirectional TVS diodes, it offers lower leakage (<1.0 μA at VWM) and tighter VBR tolerance, improving efficiency in always-on systems. For AC or floating signal lines, a bidirectional device would be required; the TPSMC33AHE3_B/H is optimized for 24 V/48 V DC rails in automotive and industrial applications.
What is the maximum reverse leakage current of the TPSMC33AHE3_B/H at elevated temperature?
The TPSMC33AHE3_B/H exhibits a maximum reverse leakage current (ID) of 1.0 μA at its stand-off voltage (VWM = 28.2 V) and junction temperature of 150 °C - confirmed in the Vishay Electrical Characteristics table. This low leakage is maintained due to junction passivation and ensures minimal power loss and signal distortion in thermally stressed environments such as under-hood automotive modules or enclosed industrial controllers using the TPSMC33AHE3_B/H.
TPSMC33AHE3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 32.8A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
TPSMC33AHE3_B/H FAQ
1.How can I place an order for TPSMC33AHE3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMC33AHE3_B/H 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 TPSMC33AHE3_B/H reliable?
The price and inventory of TPSMC33AHE3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMC33AHE3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMC33AHE3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMC33AHE3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMC33AHE3_B/H?
TPSMC33AHE3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMC33AHE3_B/H 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 TPSMC33AHE3_B/H?
For technical support, including TPSMC33AHE3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMC33AHE3_B/H requirements.
6.How does Aetrix verify that TPSMC33AHE3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMC33AHE3_B/H 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 TPSMC33AHE3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMC33AHE3_B/H?
All TPSMC33AHE3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMC33AHE3_B/H, 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 TPSMC33AHE3_B/H part is unused and in its original packaging.
Return procedure for TPSMC33AHE3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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