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Vishay General Semiconductor - Diodes Division TPSMB15HE3/5BT
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- Part No.:
- TPSMB15HE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB15HE3/5BT.pdf
- Description:
- TVS DIODE 12.1VWM 22VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,340
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Product details
Overview
TPSMB15HE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping inductive switching transients and ESD events on power rails and signal lines. It features 15 V nominal breakdown voltage (VBR = 14.3–15.8 V at 1 mA), 12.8 V stand-off voltage (VWM), 21.2 V maximum clamping voltage (VC) at 28.3 A peak pulse current, 600 W peak pulse power (10/1000 µs), and operates up to +185 °C junction temperature - ideal for automotive power rail protection.
For engineers reviewing the TPSMB15HE3/5BT datasheet, TPSMB15HE3/5BT pinout, TPSMB15HE3/5BT application, or TPSMB15HE3/5BT equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 moisture sensitivity, 185 °C TJ max rating, and compatibility with high-reliability automotive and industrial PCB layouts requiring robust surge immunity without derating at elevated ambient temperatures.
Technical Context
The TPSMB15HE3/5BT employs passivated anisotropic rectifier technology optimized for stable breakdown behavior under repetitive surge stress. Its junction design enables consistent clamping performance across -65 °C to +185 °C operating range and supports 0.01% duty cycle operation with 10/1000 µs waveform compliance.
It delivers low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of fast-rising transients from inductive load switching or lightning-induced surges. The device is rated for 75 A non-repetitive forward surge current (8.3 ms half-sine) and exhibits 0.076 %/°C temperature coefficient of VBR, ensuring predictable voltage drift over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 14.3 / 15.0 / 15.8 V at 1 mA - defines precise clamping onset threshold for reliable overvoltage detection |
| VWM | 12.8 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 21.2 V at 28.3 A - actual clamped voltage during 600 W transient, limiting downstream IC stress |
| PPPM | 600 W (10/1000 µs) - peak surge energy handling capacity for automotive-level ISO 7637-2 pulse 1/2a/5a immunity |
| TJ max | +185 °C - enables placement near hot components (e.g., power MOSFETs, DC/DC converters) without thermal derating |
| Polarity | Unidirectional - protects only against positive transients relative to cathode; requires correct orientation in series with protected line |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; safe for standard reflow up to 260 °C peak |
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 | Transient current return path | Connected to ground or low-impedance return plane; carries full surge current during clamping |
| Cathode | Protected line connection point | Connected to line being protected (e.g., 12 V rail); voltage referenced to anode during clamping |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Stable VBR and low leakage (<1 μA at VWM) over lifetime and temperature cycling |
| 185 °C junction capability | Enables use in engine control units (ECUs), under-hood modules, and industrial motor drives without thermal margin loss |
| 600 W peak pulse power (10/1000 µs) | Meets ISO 16750-2 and SAE J1113-11 surge immunity requirements for automotive electronics |
| AEC-Q101 qualified (HE3 suffix) | Validated reliability for automotive applications including vibration, thermal shock, and high-temp storage |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for 3.3 V/5 V logic interfaces |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in body control modules against load dump and alternator ripple. IC Role / Device Role: Unidirectional TVS placed between VIN and GND to clamp transients above 12.8 V. Use Value: Limits peak voltage to ≤21.2 V during 600 W surges, preventing damage to 16 V-rated LDOs and MCU VDD pins. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors from ESD and cable discharge events. IC Role / Device Role: TVS mounted at connector entry point, cathode to signal line, anode to local ground. Use Value: Sub-1 ns response ensures clamping before sensitive op-amp input stages saturate or latch up. |
| Consumer Device USB Port Surge Suppression | Telecom Equipment DC Power Input Protection |
Use Scenario: Safeguarding USB VBUS lines in portable docking stations exposed to hot-plug and ESD per IEC 61000-4-2. IC Role / Device Role: Unidirectional TVS placed in series with VBUS, oriented to clamp positive surges only. Use Value: 12.8 V VWM allows normal 5 V operation while clamping 8 kV contact ESD to <21.2 V. | Use Scenario: Protecting 48 V DC input of PoE-powered network switches from lightning-induced surges on outdoor cabling. IC Role / Device Role: TVS used as secondary protection stage after gas discharge tube (GDT), cathode to +48 V rail. Use Value: 600 W rating handles residual energy after GDT crowbarring, maintaining system uptime during Category A/B surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Same VBR range (14.3–15.8 V), but lower PPPM = 400 W; SMA package (smaller footprint, lower thermal mass) | Limited to lower-energy transients (e.g., IEC 61000-4-5 Level 3); not AEC-Q101 qualified | Select when cost or board space is critical and automotive qualification is unnecessary. |
| TPSMB15AHM3/5BT | Identical electrical specs; HM3 suffix denotes halogen-free molding compound (vs. HE3's RoHS-only) | Required for strict halogen-free compliance (e.g., EU WEEE, certain Tier 1 automotive specs) | Choose HM3 if material composition mandates exceed RoHS, especially for export to regulated markets. |
Compared with SMAJ15A and TPSMB15AHM3/5BT, the TPSMB15HE3/5BT provides higher surge robustness (600 W vs. 400 W) and automotive-grade reliability (AEC-Q101), while maintaining identical clamping behavior - making it optimal for mission-critical 12 V systems where thermal stability and long-term field endurance are mandatory.
Availability
TPSMB15HE3/5BT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, consumer USB power delivery systems, and telecom DC input protection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPSMB15HE3/5BT 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 operation, and automotive qualification.
The TPSMB15HE3/5BT belongs to Vishay's PAR® (Protection and Regulation) family of transient voltage suppressors, engineered specifically for high-reliability surge protection in harsh environments - including under-hood automotive, industrial automation, and infrastructure equipment.
FAQ
What is the maximum clamping voltage of the TPSMB15HE3/5BT during a 600 W transient event?
The TPSMB15HE3/5BT has a maximum clamping voltage (VC) of 21.2 V at 28.3 A peak pulse current, measured under standardized 10/1000 µs waveform conditions. This value ensures that downstream circuitry - such as 24 V-tolerant microcontrollers or 16 V-rated regulators - remains within safe operating limits during surge events. The TPSMB15HE3/5BT achieves this clamping performance consistently across its full operating temperature range (-65 °C to +185 °C).
Is the TPSMB15HE3/5BT qualified for automotive applications?
Yes, the TPSMB15HE3/5BT is AEC-Q101 qualified, as confirmed by Vishay's official documentation and ordering code suffix "HE3". This qualification covers stress tests including high-temperature operating life, temperature cycling, and mechanical shock - validating its suitability for automotive powertrain, chassis, and body electronics. The TPSMB15HE3/5BT also meets MSL Level 1 and operates up to +185 °C, satisfying under-hood thermal requirements.
What does the "HE3" suffix mean in TPSMB15HE3/5BT?
The "HE3" suffix in TPSMB15HE3/5BT indicates RoHS-compliant construction and AEC-Q101 qualification per Vishay's ordering nomenclature. It distinguishes this variant from non-automotive versions (e.g., base TPSMB15A) and confirms compliance with JEDEC J-STD-020 moisture sensitivity Level 1 and JESD 201 class 2 whisker resistance. The "5BT" denotes tape-and-reel packaging in 7" reels (750 units per reel).
How does the TPSMB15HE3/5BT compare to bidirectional TVS diodes in surge protection?
The TPSMB15HE3/5BT is unidirectional and therefore optimized for DC power line protection where only positive transients relative to ground must be suppressed - offering lower leakage (<1 μA at 12.8 V) and tighter VBR tolerance than comparable bidirectional devices. Unlike bidirectional TVS diodes, it cannot suppress negative-going transients; thus, it is not suitable for AC or floating signal lines unless paired with complementary protection. Its design prioritizes efficiency and precision in fixed-polarity rails.
What is the recommended PCB layout for optimal thermal and electrical performance of the TPSMB15HE3/5BT?
For optimal performance, mount the TPSMB15HE3/5BT using Vishay's specified 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads at each terminal to maximize thermal dissipation and sustain 600 W pulse capability. Keep traces short and wide between the TVS and protected node, avoid vias in the surge current path, and ensure the anode connects directly to a low-impedance ground plane. The cathode band must align correctly per silkscreen polarity marking to prevent reverse-bias failure.
TPSMB15HE3/5BT 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):
- 12.1V
- Voltage - Breakdown (Min):
- 13.5V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 27.3A
- 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)
TPSMB15HE3/5BT FAQ
1.How can I place an order for TPSMB15HE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB15HE3/5BT 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 TPSMB15HE3/5BT reliable?
The price and inventory of TPSMB15HE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB15HE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB15HE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB15HE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB15HE3/5BT?
TPSMB15HE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB15HE3/5BT 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 TPSMB15HE3/5BT?
For technical support, including TPSMB15HE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB15HE3/5BT requirements.
6.How does Aetrix verify that TPSMB15HE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB15HE3/5BT 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 TPSMB15HE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB15HE3/5BT?
All TPSMB15HE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB15HE3/5BT, 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 TPSMB15HE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB15HE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB15HE3/5BT Tags
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