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Vishay General Semiconductor - Diodes Division TPSMB15AHE3_A/I
- Part No.:
- TPSMB15AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
TPSMB15AHE3_A/I.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,038
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Product details
Overview
TPSMB15AHE3_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 a 15.0 V nominal breakdown voltage (VBR), 12.8 V maximum standoff voltage (VWM), 21.2 V clamping voltage 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 TPSMB15AHE3_A/I datasheet, TPSMB15AHE3_A/I pinout, TPSMB15AHE3_A/I application, or TPSMB15AHE3_A/I equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, low clamping ratio (VC/VWM ≈ 1.66), and compatibility with high-reliability PCB layouts requiring robust surge immunity per IEC 61000-4-5.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to deliver stable clamping under repetitive surge conditions. Its 185 °C maximum junction temperature and AEC-Q101 qualification confirm suitability for under-hood automotive environments where thermal derating and long-term reliability are critical.
The device responds within picoseconds to transients and maintains low incremental surge resistance during 10/1000 µs waveform events. Its cathode-band polarity marking and matte tin-plated terminals ensure consistent orientation and solderability per J-STD-002 and JESD 22-B102 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 14.3 / 15.0 / 15.8 V - defines precise clamping onset threshold at 1 mA test current |
| VWM | 12.8 V - maximum continuous reverse working voltage before leakage exceeds 1 μA |
| VC @ IPPM | 21.2 V - clamped voltage during 28.3 A 10/1000 µs surge, limiting downstream stress |
| PPPM | 600 W - peak pulse power handling capability under standard surge waveform |
| IFSM | 75 A - surge current rating for 8.3 ms half-sine wave, supporting inrush and load-dump events |
| TJ max. | +185 °C - enables operation in high-temperature automotive zones without derating penalties |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 5.59 mm body length and 2.20 mm width |
Pinout & Package
TPSMB15AHE3_A/I is a two-terminal unidirectional TVS diode in SMB (DO-214AA) package. The cathode is marked by a color band; the anode is the unmarked end. 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 current sink | Connected to protected line; conducts surge current to ground when VLINE > VBR |
| Anode (unbanded end) | Reference node | Typically tied to system ground or low-impedance return path for clamping action |
Key Features
| Feature | Design Value |
|---|---|
| Passivated anisotropic rectifier technology | Enables stable VBR over temperature and lifetime, reducing parameter drift in harsh environments |
| AEC-Q101 qualification | Validates reliability for automotive applications including engine control units and ADAS power supplies |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without preconditioning, simplifying SMT manufacturing flow |
| Low clamping ratio (VC/VWM = 1.66) | Minimizes overvoltage exposure to downstream ICs during ESD or load-switching transients |
| 185 °C junction rating | Eliminates thermal derating in under-hood modules operating above 150 °C ambient |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump (ISO 7637-2 Pulse 5a) and alternator transients. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between power input and ground. Use Value: Limits transient voltage to ≤21.2 V during 28.3 A surges, preserving MCU and CAN transceiver integrity. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: Signal-line TVS shunt protector on differential or single-ended sensor traces. Use Value: Sub-1 ns response and <1 μA leakage at 12.8 V ensure minimal signal distortion and no DC offset. |
| Telecom Power Supply Input | Consumer Device USB Port Protection |
Use Scenario: Safeguarding AC/DC adapter outputs against lightning-induced surges (IEC 61000-4-5 Level 3). IC Role / Device Role / Timing Role: Primary-stage TVS on secondary-side DC bus before DC-DC converter. Use Value: 600 W pulse rating and 75 A IFSM withstand repeated 1 kV/2 Ω surges without degradation. | Use Scenario: Adding secondary-level surge immunity to USB VBUS lines in portable electronics. IC Role / Device Role / Timing Role: Standoff-rated TVS on 5 V supply rail upstream of USB controller IC. Use Value: 12.8 V VWM prevents conduction during normal operation while clamping fast ESD pulses to safe levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ15A | Same SMB package, identical VBR (14.3–15.8 V), but rated for 600 W with 10/1000 µs waveform and not AEC-Q101 qualified | Lacks automotive qualification; suitable for industrial/commercial use only | Select SMBJ15A when AEC-Q101 is not required and cost optimization is prioritized |
| TPSMB15AHM3_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; used where halogen-free compliance is mandated | Choose TPSMB15AHM3_A/I when RoHS + halogen-free material requirements apply |
Compared with SMBJ15A and TPSMB15AHM3_A/I, the TPSMB15AHE3_A/I provides AEC-Q101 qualification and standard RoHS compliance in a cost-optimized variant - making it the preferred choice for automotive Tier 2 suppliers needing validated reliability without halogen-free overhead.
Availability
TPSMB15AHE3_A/I is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom power supply input stages requiring stable component supply across extended temperature and surge stress conditions.
Supply support for TPSMB15AHE3_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 high-reliability, high-temperature, and automotive-grade performance.
The TPSMB series belongs to Vishay's PAR® (Protection and Regulation) transient voltage suppressor family, engineered specifically for robust, high-temperature-stable clamping in automotive and industrial power systems where failure is not an option.
FAQ
What is the breakdown voltage tolerance for TPSMB15AHE3_A/I?
The TPSMB15AHE3_A/I has a guaranteed breakdown voltage range of 14.3 V (minimum) to 15.8 V (maximum) at 1 mA test current, with 15.0 V as the nominal value. This ±5% tolerance ensures predictable clamping onset across production lots and temperature extremes up to +185 °C junction temperature.
Is TPSMB15AHE3_A/I suitable for bidirectional transient protection?
No, TPSMB15AHE3_A/I is strictly unidirectional and must be installed with correct polarity - cathode toward the protected line. For bidirectional protection, Vishay offers the TPSMB15CA series. Using TPSMB15AHE3_A/I in reverse-biased configurations risks permanent damage due to lack of reverse standoff capability.
Does TPSMB15AHE3_A/I meet automotive qualification standards?
Yes, TPSMB15AHE3_A/I is AEC-Q101 qualified, confirming its suitability for automotive applications including engine control, body electronics, and ADAS subsystems. The HE3 suffix explicitly denotes AEC-Q101 qualification and RoHS compliance per Vishay's ordering nomenclature.
What is the maximum clamping voltage of TPSMB15AHE3_A/I under surge conditions?
The TPSMB15AHE3_A/I clamps to a maximum of 21.2 V when subjected to its rated 28.3 A peak pulse current (IPPM) under the standardized 10/1000 µs waveform. This clamping voltage remains stable across temperature and lifetime due to passivated anisotropic rectifier design.
Can TPSMB15AHE3_A/I be used in lead-free reflow processes?
Yes, TPSMB15AHE3_A/I meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, enabling direct placement into standard lead-free SMT assembly without prebaking or special handling.
TPSMB15AHE3_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):
- 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)
TPSMB15AHE3_A/I FAQ
1.How can I place an order for TPSMB15AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMB15AHE3_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 TPSMB15AHE3_A/I reliable?
The price and inventory of TPSMB15AHE3_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 TPSMB15AHE3_A/I is usually 5 days.
3.What payment methods are accepted for TPSMB15AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMB15AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMB15AHE3_A/I?
TPSMB15AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMB15AHE3_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 TPSMB15AHE3_A/I?
For technical support, including TPSMB15AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMB15AHE3_A/I requirements.
6.How does Aetrix verify that TPSMB15AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All TPSMB15AHE3_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 TPSMB15AHE3_A/I meets industry standards.
7.What is the process for return or replacement of TPSMB15AHE3_A/I?
All TPSMB15AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with TPSMB15AHE3_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 TPSMB15AHE3_A/I part is unused and in its original packaging.
Return procedure for TPSMB15AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMB15AHE3_A/I Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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