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Vishay General Semiconductor - Diodes Division TPSMB12AHE3_A/I
- Part No.:
- TPSMB12AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB12AHE3_A/I.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,513
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Product details
Overview
TPSMB12AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching transients and ESD events on power rails and signal lines. It features a 12 V nominal breakdown voltage (VBR = 11.4–12.6 V at 1 mA), 10.2 V maximum stand-off voltage (VWM), 16.7 V clamping voltage (VC) at 35.9 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 TPSMB12AHE3_A/I datasheet, TPSMB12AHE3_A/I pinout, TPSMB12AHE3_A/I application, or TPSMB12AHE3_A/I equivalent, this page delivers verified electrical parameters, SMB (DO-214AA) package dimensions, AEC-Q101 qualification status, thermal derating curves, and real-world clamping behavior under repetitive surge conditions.
Technical Context
The TPSMB12AHE3_A/I employs passivated anisotropic rectifier technology with optimized junction passivation for stable high-temperature operation. Its unidirectional architecture provides low clamping impedance during reverse-biased overvoltage events, enabling fast response (<1 ns) and low incremental surge resistance to limit voltage overshoot across protected ICs or MOSFETs.
Rated for 75 A non-repetitive forward surge current (8.3 ms half-sine), it supports robust protection in automotive load-dump and inductive kick scenarios. The device meets MSL Level 1 per J-STD-020 and is qualified to AEC-Q101 - confirming suitability for under-hood and engine-control module applications where reliability at TJ = 185 °C is mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 11.4 / 12.0 / 12.6 V at 1 mA - defines precise voltage threshold at which clamping initiates under controlled test conditions |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage exceeds 2 µA, ensuring no false triggering in normal operation |
| VC @ IPPM | 16.7 V at 35.9 A - actual clamped voltage seen by protected circuit during worst-case 10/1000 µs surge, limiting stress on downstream components |
| PPPM | 600 W - peak pulse power handling capability determines survivability against standardized lightning/inductive transients |
| TJ max. | +185 °C - enables deployment in high-ambient environments such as automotive powertrain and industrial motor drives without thermal derating penalties |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.205" × 0.220" footprint and matte tin-plated leads compliant with J-STD-002 solderability |
| AEC-Q101 | Qualified - confirms reliability validation for automotive electronics per stress-test requirements including HTGB, HTRB, and temperature cycling |
Pinout & Package
TPSMB12AHE3_A/I is housed in the SMB (DO-214AA) plastic package with cathode indicated by a color band. The two-terminal device has no internal complexity - Anode and Cathode are the only terminals, with polarity critical for correct unidirectional clamping orientation in series with the protected line.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VWM, clamping voltage to ≤16.7 V |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane; completes conduction path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift < ±5 % over 1000 hrs at 150 °C, critical for long-life automotive modules |
| TJ = 185 °C capability | Supports uninterrupted operation in under-hood ECUs and industrial inverters without thermal shutdown or parameter shift |
| 600 W peak pulse power (10/1000 µs) | Withstands ISO 7637-2 Pulse 1 (inductive switch-off) and IEC 61000-4-5 Combination Wave surges up to 1 kV/42 Ω |
| Low incremental surge resistance | Minimizes VC rise under high di/dt events, reducing voltage overshoot on sensitive 3.3 V or 5 V logic rails |
| MSL Level 1, peak reflow 260 °C | Allows single-pass lead-free reflow assembly without moisture-induced popcorn failure or delamination |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed microcontroller power inputs in body control modules against load-dump transients (ISO 16750-2) and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between VBAT and GND, clamping surges >25 V to ≤16.7 V within nanoseconds. Use Value: Prevents latch-up or permanent damage to MCU LDOs and internal regulators during vehicle cranking or alternator field collapse. | Use Scenario: Shielding analog output lines (e.g., 4–20 mA current loop) of pressure sensors in factory automation systems from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS mounted directly at connector entry point, shunting fast transients before reaching op-amp input stage. Use Value: Maintains signal integrity and avoids offset drift or temporary saturation caused by sub-100 ns ESD pulses up to ±8 kV contact discharge. |
| Consumer Device USB Port Protection | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding VBUS and D+/D− lines in USB-C power delivery adapters against hot-plug transients and nearby lightning-induced coupling. IC Role / Device Role / Timing Role: Discrete unidirectional TVS on VBUS rail; bidirectional arrays used elsewhere on data lines. Use Value: Limits VBUS overvoltage to safe levels for USB PD controller ICs while preserving 5 V nominal operation and low capacitance. | Use Scenario: Front-end protection of Ethernet PHY power supplies and auxiliary bias rails in telecom base station line cards exposed to induced surges on AC mains or telco lines. IC Role / Device Role / Timing Role: Primary clamping device on +12 V or +48 V bias rails feeding PHY ICs and clock buffers. Use Value: Absorbs 600 W surge energy without degradation, meeting GR-1089-CORE Level 3 telecom immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A | Same SMB package, 12 V VBR, but rated for 400 W PPPM and not AEC-Q101 qualified | Limited to commercial-grade consumer or industrial use; lacks automotive reliability validation | Select SMAJ12A only for cost-sensitive non-automotive designs where 600 W surge margin is not required |
| TPSMB12AHM3_A/I | Identical electrical specs and AEC-Q101 qualification; differs only in halogen-free molding compound and JEDEC JESD201 Class 2 whisker resistance | No functional difference; preferred for RoHS+halogen-free compliance mandates in EU automotive programs | Choose TPSMB12AHM3_A/I when halogen-free material content is contractually required or for extended whisker reliability in high-vibration environments |
Compared with SMAJ12A and TPSMB12AHM3_A/I, the TPSMB12AHE3_A/I offers full AEC-Q101 qualification and 600 W surge capacity in standard RoHS-compliant construction - making it the default choice for automotive and high-reliability industrial deployments where both performance and certification are mandatory.
Availability
TPSMB12AHE3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom line card surge suppression requiring stable component supply, traceable lot history, and long-term lifecycle support.
Supply support for TPSMB12AHE3_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, TVS devices, and optoelectronics with emphasis on high-reliability, high-temperature, and automotive-qualified solutions.
The TPSMB series belongs to Vishay's PAR® (Protected Anisotropic Rectifier) transient voltage suppressor product line, engineered specifically for robust, high-temperature-stable clamping in automotive power distribution and industrial control systems.
FAQ
What is the breakdown voltage tolerance of TPSMB12AHE3_A/I?
The TPSMB12AHE3_A/I has a specified breakdown voltage range of 11.4 V to 12.6 V at 1 mA test current, representing ±5 % tolerance around the nominal 12 V rating. This tight VBR window ensures consistent clamping onset across production lots and supports reliable coordination with upstream fuses or downstream IC absolute maximum ratings. The value is measured per ANSI/IEEE C62.35 and confirmed in the Vishay datasheet revision 23-Jan-2024.
Is TPSMB12AHE3_A/I suitable for automotive applications?
Yes, TPSMB12AHE3_A/I is AEC-Q101 qualified and rated for operation up to +185 °C junction temperature, making it suitable for under-hood automotive applications including body control modules, lighting drivers, and power distribution units. Its SMB package meets MSL Level 1 and its construction passes JESD201 Class 2 whisker testing - all documented in the official Vishay datasheet for TPSMB12AHE3_A/I.
What is the clamping voltage of TPSMB12AHE3_A/I at its rated peak pulse current?
The TPSMB12AHE3_A/I exhibits a maximum clamping voltage (VC) of 16.7 V at its rated peak pulse current (IPPM) of 35.9 A, tested with a 10/1000 µs waveform. This value represents the highest voltage imposed on the protected circuit during worst-case surge conditions and is critical for verifying compatibility with the 20 V absolute maximum rating of common 12 V-rated power management ICs.
Does TPSMB12AHE3_A/I have bidirectional polarity?
No, TPSMB12AHE3_A/I is unidirectional only, as explicitly stated in the Vishay datasheet. It functions as a reverse-biased Zener-like clamp and must be oriented with the cathode toward the protected line and anode to ground. For AC or dual-polarity signal line protection, a separate bidirectional TVS or back-to-back configuration is required - TPSMB12AHE3_A/I does not support symmetrical clamping.
What packaging format is supplied for TPSMB12AHE3_A/I?
TPSMB12AHE3_A/I is supplied in 13-inch diameter plastic tape and reel format, with a base quantity of 3200 pieces per reel. The "I" suffix in the ordering code explicitly denotes this delivery mode, and the device uses matte tin-plated leads compatible with J-STD-002 solderability standards - confirmed in the Vishay ordering information table for TPSMB12AHE3_A/I.
TPSMB12AHE3_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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 35.9A
- 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)
TPSMB12AHE3_A/I FAQ
1.How can I place an order for TPSMB12AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB12AHE3_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 TPSMB12AHE3_A/I reliable?
The price and inventory of TPSMB12AHE3_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 TPSMB12AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB12AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB12AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB12AHE3_A/I?
TPSMB12AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB12AHE3_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 TPSMB12AHE3_A/I?
For technical support, including TPSMB12AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB12AHE3_A/I requirements.
6.How does Aetrix verify that TPSMB12AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB12AHE3_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 TPSMB12AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB12AHE3_A/I?
All TPSMB12AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB12AHE3_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 TPSMB12AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMB12AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB12AHE3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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