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Vishay General Semiconductor - Diodes Division TPSMB15A-1BHE3/5BT
- Part No.:
- TPSMB15A-1BHE3/5BT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB15A-1BHE3/5BT.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,797
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Product details
Overview
TPSMB15A-1BHE3/5BT from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor diode designed for clamping inductive and lightning-induced transients on power rails and signal lines. It features 15.0 V nominal breakdown voltage (VBR), 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 - used in automotive power supply protection and industrial sensor interface circuits.
For engineers reviewing the TPSMB15A-1BHE3/5BT datasheet, TPSMB15A-1BHE3/5BT pinout, TPSMB15A-1BHE3/5BT application, or TPSMB15A-1BHE3/5BT equivalent, key selection criteria include unidirectional polarity, SMB (DO-214AA) package compatibility, AEC-Q101 qualification status, TJ = 185 °C thermal rating, and clamping performance under repetitive 10/1000 µs surge conditions.
Technical Context
This device implements passivated anisotropic rectifier technology with optimized junction passivation for stable clamping across temperature. Its 10/1000 µs waveform response delivers 28.3 A peak pulse current while maintaining ≤21.2 V clamping voltage, enabling robust protection of 12 V automotive electronics and industrial I/O interfaces.
The TPSMB15A-1BHE3/5BT is rated for 75 A non-repetitive forward surge (8.3 ms half-sine) and exhibits low incremental surge resistance with 3.5 V max forward voltage at 50 A - critical for minimizing conduction loss during transient events without compromising system-level fault isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 14.3 / 15.0 / 15.8 V - ensures reliable turn-on above 12 V rail with margin against tolerance drift |
| VWM | 12.8 V - blocks normal operating voltage while allowing minimal leakage (<1 µA) |
| VC @ IPPM | 21.2 V - limits downstream IC stress during 28.3 A transient without exceeding 24 V system derating |
| PPPM | 600 W - sustains high-energy surges per ISO 7637-2 Pulse 1/2a/5a in automotive environments |
| TJ max | +185 °C - supports under-hood placement and extended thermal reliability in AEC-Q101 applications |
| Package | SMB (DO-214AA) - industry-standard footprint compatible with automated SMT assembly and IPC-7351B land patterns |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
TPSMB15A-1BHE3/5BT uses the SMB (DO-214AA) surface-mount package with cathode-indicating band. The device has two terminals: anode and cathode - no internal circuitry or active control logic.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Stable VBR drift <±5 % over 1000 hrs at 150 °C - enables long-term reliability in harsh environments |
| MSL Level 1 | Reflow-compatible up to 260 °C peak - eliminates moisture sensitivity concerns in standard SMT processes |
| Low clamping ratio (VC/VBR) | 1.41 - minimizes overvoltage exposure relative to breakdown threshold for tighter system protection margins |
| Matte tin plating | Meets J-STD-002 and JESD 22-B102 - ensures solderability and whisker resistance in high-reliability assemblies |
| Unidirectional polarity | No reverse-bias leakage penalty - ideal for DC-biased rails where bidirectional suppression is unnecessary |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Clamping |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and inductive switching transients per ISO 7637-2. IC Role / Device Role / Timing Role: Transient voltage suppressor placed between power input and local regulator input. Use Value: Limits transient overshoot to ≤21.2 V, preventing damage to downstream LDOs and microcontrollers rated for 24 V absolute max. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Clamp diode installed at connector entry point before signal conditioning amplifier. Use Value: Responds in <1 ns to clamp ±8 kV contact ESD (IEC 61000-4-2) while adding <0.5 pF capacitance to preserve signal integrity. |
| Telecom DC Power Input Protection | Consumer Device USB Port Surge Suppression |
Use Scenario: Safeguarding PoE-powered equipment inputs against induced surges from nearby AC wiring or lightning coupling. IC Role / Device Role / Timing Role: Primary TVS on 48 V DC input stage upstream of DC-DC converter. Use Value: Absorbs 600 W peak energy without degradation, maintaining VWM = 12.8 V to avoid false triggering during normal operation. |
Use Scenario: Adding secondary-level surge immunity to USB VBUS lines in portable chargers and docking stations. IC Role / Device Role / Timing Role: Unidirectional TVS placed between USB connector and power switch FET. Use Value: Withstands 28.3 A surge while holding clamped voltage below 21.2 V - within USB PD 3.0 20 V profile safety margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Same VBR (14.3–15.8 V), lower PPPM = 400 W, SMA package (smaller thermal mass) | Limited to lower-energy transients; not AEC-Q101 qualified | Select when cost or board space is prioritized over automotive qualification and 600 W capability |
| SMCJ15A | Same VBR, higher PPPM = 1500 W, larger SMC package (DO-214AB) | Requires larger PCB footprint and higher mounting pad copper area | Select when system-level surge testing exceeds ISO 7637-2 Level 4 or requires >600 W margin |
Compared with SMAJ15A and SMCJ15A, the TPSMB15A-1BHE3/5BT uniquely balances AEC-Q101 qualification, 600 W capability, and SMB footprint - making it optimal for space-constrained automotive modules needing certified reliability without SMC-level board real estate.
Availability
TPSMB15A-1BHE3/5BT is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power supplies, and consumer USB power delivery systems requiring stable component supply with full traceability and lifecycle support.
Supply support for TPSMB15A-1BHE3/5BT 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, MOSFETs, and passive components with emphasis on high-reliability and automotive-grade solutions.
The TPSMB15A-1BHE3/5BT belongs to Vishay's PAR® transient voltage suppressor family, engineered specifically for high-temperature stability and repeatable clamping performance in automotive and industrial power protection applications.
FAQ
What is the AEC-Q101 qualification status of the TPSMB15A-1BHE3/5BT?
The TPSMB15A-1BHE3/5BT is AEC-Q101 qualified - confirmed by Vishay's documentation for base P/NHE3 variants. This qualification covers temperature cycling, high-temperature reverse bias (HTRB), and ESD testing per AEC-Q101 Rev D, validating its suitability for automotive under-hood and chassis-mounted applications where reliability is mission-critical. The TPSMB15A-1BHE3/5BT meets all required stress tests without parameter shift beyond specification limits.
Does the TPSMB15A-1BHE3/5BT have bidirectional polarity?
No, the TPSMB15A-1BHE3/5BT is unidirectional only - clearly specified in Vishay's datasheet under FEATURES and ELECTRICAL CHARACTERISTICS. It functions as a cathode-to-anode clamping device and must be oriented with the banded end toward the protected line. Bidirectional variants (e.g., TPSMB15CA) exist in the same family but are distinct part numbers; the TPSMB15A-1BHE3/5BT does not support reverse-polarity transient suppression.
What is the maximum clamping voltage of the TPSMB15A-1BHE3/5BT at rated peak pulse current?
The TPSMB15A-1BHE3/5BT has a maximum clamping voltage (VC) of 21.2 V at its rated peak pulse current (IPPM) of 28.3 A, measured using the standardized 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during worst-case surge events - a key parameter for ensuring downstream ICs remain within their absolute maximum ratings.
Is the TPSMB15A-1BHE3/5BT compatible with lead-free reflow soldering processes?
Yes, the TPSMB15A-1BHE3/5BT meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102, ensuring reliable wetting and intermetallic formation during standard Pb-free SAC305 reflow profiles. No pre-baking is required, and the TPSMB15A-1BHE3/5BT maintains parametric integrity after exposure to multiple reflow cycles.
How does the TPSMB15A-1BHE3/5BT compare to the SMAJ15A in terms of surge handling capability?
The TPSMB15A-1BHE3/5BT delivers 600 W peak pulse power (10/1000 µs), whereas the SMAJ15A is rated for 400 W under identical conditions - a 50 % higher energy absorption capacity. Both share the same VBR range, but the TPSMB15A-1BHE3/5BT achieves this with superior thermal design in the SMB package and AEC-Q101 qualification, making it more suitable for demanding automotive surge standards like ISO 7637-2 where sustained 600 W pulses occur.
TPSMB15A-1BHE3/5BT 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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 28.3A
- 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 (SMB)
TPSMB15A-1BHE3/5BT FAQ
1.How can I place an order for TPSMB15A-1BHE3/5BT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB15A-1BHE3/5BT 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 TPSMB15A-1BHE3/5BT reliable?
The price and inventory of TPSMB15A-1BHE3/5BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMB15A-1BHE3/5BT is usually 5 days.
3.What payment methods are accepted for TPSMB15A-1BHE3/5BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB15A-1BHE3/5BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB15A-1BHE3/5BT?
TPSMB15A-1BHE3/5BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB15A-1BHE3/5BT 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 TPSMB15A-1BHE3/5BT?
For technical support, including TPSMB15A-1BHE3/5BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB15A-1BHE3/5BT requirements.
6.How does Aetrix verify that TPSMB15A-1BHE3/5BT is sourced from the original manufacturer or authorized distributors?
All TPSMB15A-1BHE3/5BT 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 TPSMB15A-1BHE3/5BT meets industry standards.
7.What is the process for return or replacement of TPSMB15A-1BHE3/5BT?
All TPSMB15A-1BHE3/5BT units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB15A-1BHE3/5BT, 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 TPSMB15A-1BHE3/5BT part is unused and in its original packaging.
Return procedure for TPSMB15A-1BHE3/5BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB15A-1BHE3/5BT Tags
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