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Vishay T15B20AHM3/H
- Part No.:
- T15B20AHM3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
T15B20AHM3/H.pdf
- Description:
- 1.5KW,20V 5%,SMB PAR
- Quantity:
- Payment:
- Shipping:
Inventory:4,441
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Product details
Overview
T15B20AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive-grade overvoltage protection of sensitive electronics. It delivers 1500 W peak pulse power (10/1000 μs), clamps at 27.7 V under 56.0 A surge current, and operates with 17.1 V stand-off voltage and 19.0–21.0 V breakdown range at 1 mA test current.
For engineers reviewing the T15B20AHM3/H datasheet, T15B20AHM3/H pinout, T15B20AHM3/H application, or T15B20AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, TJ = 185 °C maximum junction temperature, SMB (DO-214AA) package, MSL Level 1 rating, and 30 kV IEC 61000-4-2 ESD immunity - critical for automotive sensor line and MOSFET gate protection.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping performance across temperature. Its unidirectional architecture provides low-leakage reverse blocking (≤1.0 μA at 17.1 V, ≤10.0 μA at TJ = 150 °C) while maintaining fast response time and high reliability under repetitive transients.
The device is optimized for high-temperature environments: rated for continuous operation from –65 °C to +185 °C, with thermal derating per Figure 2, and qualified to AEC-Q101 for automotive under-hood and powertrain applications. Its 0.082 %/°C VBR temperature coefficient enables predictable voltage shift across operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V at 1 mA - defines precise breakdown onset for reliable triggering |
| VWM | 17.1 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 27.7 V at 56.0 A - clamping voltage during 10/1000 μs surge, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling capability under standardized waveform |
| TJ max | +185 °C - enables placement near hot components in engine control units and ADAS modules |
| ESD immunity | 30 kV contact/air (IEC 61000-4-2) - protects against human-body-model and system-level discharge events |
| MSL level | Level 1 (J-STD-020) - supports lead-free reflow up to 260 °C peak without moisture-induced damage |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads and cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink terminal | Connected to protected line; conducts during overvoltage to clamp to VC |
| Anode | Reference/ground return path | Typically tied to system ground or low-impedance return plane for effective clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, humidity bias, and mechanical shock testing |
| 185 °C junction rating | Supports placement in high-ambient zones such as power inverters and battery management systems |
| Passivated anisotropic rectifier design | Reduces parameter drift and improves long-term stability under thermal stress |
| 30 kV ESD immunity | Eliminates need for additional discrete ESD protection on sensor signal lines |
| MSL Level 1 compliance | Enables direct placement into standard SMT reflow processes without baking preconditioning |
Applications
| Automotive Engine Control Unit (ECU) | Automotive Camera Module Power Line |
|---|---|
Use Scenario: Protects microcontroller I/O and CAN transceiver inputs from load-dump and inductive switching transients in 12 V vehicle electrical systems. IC Role / Device Role: Unidirectional TVS placed between signal line and ground to shunt surge energy away from IC pins. Use Value: Clamps to 27.7 V at 56 A, ensuring downstream logic remains below absolute maximum ratings during ISO 7637-2 Pulse 5a events. | Use Scenario: Shields 5 V or 12 V power rail of rear-view or surround-view camera modules from ignition noise and alternator ripple. IC Role / Device Role: Primary overvoltage clamp on main power input, upstream of DC-DC converter. Use Value: 1500 W pulse rating and 185 °C rating allow sustained operation near hot camera housing without derating. |
| Automotive HVAC Blower Motor Driver | Industrial Sensor Signal Conditioning Board |
Use Scenario: Safeguards gate drivers and current-sense amplifiers from flyback voltage spikes generated by brushed DC blower motor commutation. IC Role / Device Role: TVS placed across motor driver output stage to absorb inductive kickback. Use Value: Fast response time and low clamping voltage prevent latch-up or permanent damage to MOSFETs and op-amps. | Use Scenario: Protects analog front-end inputs (e.g., thermocouple, RTD, or pressure sensor lines) in factory automation equipment exposed to relay switching noise. IC Role / Device Role: Low-capacitance unidirectional clamp on differential or single-ended sensor traces. Use Value: 1.0 μA leakage at 17.1 V preserves signal integrity and measurement accuracy in high-impedance sensing paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ20A | Same SMB package, 20 V VWM, but lower 600 W PPPM and non-AEC-Q101 rated | Not qualified for automotive; suitable only for industrial or consumer-grade designs | Select when AEC-Q101 is not required and cost sensitivity outweighs pulse power margin |
| SMCJ20A | Larger SMC (DO-214AB) package, same 20 V VWM, higher 1500 W rating, but no AEC-Q101 certification | Requires PCB footprint change; used where board space allows larger case and automotive qualification is secondary | Choose when higher surge margin is needed and layout permits SMC footprint |
Compared with SMBJ20A and SMCJ20A, T15B20AHM3/H uniquely combines AEC-Q101 qualification, SMB footprint, 1500 W rating, and 185 °C operation - making it the only drop-in solution for space-constrained, high-reliability automotive power and signal line protection.
Availability
T15B20AHM3/H is available at Aetrix Electronics and suitable for automotive ECU protection, camera module power conditioning, and industrial sensor interface circuits requiring stable component supply, long-lifecycle support, and traceable sourcing.
Supply support for T15B20AHM3/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, TVS devices, and optoelectronics with emphasis on reliability, precision, and automotive-grade validation.
The T15B20AHM3/H belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for robust transient suppression in harsh automotive and industrial environments where thermal stability and AEC-Q101 compliance are mandatory.
FAQ
What is the breakdown voltage range of T15B20AHM3/H at 1 mA test current?
The T15B20AHM3/H has a guaranteed breakdown voltage range of 19.0 V (minimum) to 21.0 V (maximum) at 1 mA test current, with a typical value of 20.0 V. This specification ensures consistent triggering behavior across production lots and temperature extremes, directly supporting design margin calculations for overvoltage protection circuits using the T15B20AHM3/H.
Is T15B20AHM3/H qualified for automotive applications?
Yes, T15B20AHM3/H is AEC-Q101 qualified and rated for continuous operation from –65 °C to +185 °C. It meets MSL Level 1 per J-STD-020 and passes whisker testing per JESD 201 Class 2. These qualifications confirm its suitability for under-hood and powertrain applications where the T15B20AHM3/H must withstand thermal cycling, vibration, and long-term reliability demands.
What is the clamping voltage of T15B20AHM3/H under peak surge conditions?
The T15B20AHM3/H clamps to a maximum of 27.7 V when subjected to its rated peak pulse current of 56.0 A (10/1000 μs waveform). This clamping voltage is measured at the device terminals and defines the upper voltage limit imposed on protected circuitry during transient events, making it a critical parameter for verifying safe operation of downstream ICs with the T15B20AHM3/H in place.
Does T15B20AHM3/H meet industry ESD immunity standards?
Yes, T15B20AHM3/H achieves 30 kV contact and air discharge immunity per IEC 61000-4-2. This performance is verified per the manufacturer's test report and enables the T15B20AHM3/H to serve as primary ESD protection on automotive sensor lines, eliminating the need for supplemental TVS or polymer-based suppressors in many designs.
What packaging format is available for T15B20AHM3/H?
T15B20AHM3/H is supplied in 7" diameter plastic tape and reel packaging, with a base quantity of 750 units per reel and package code "H". The HM3 suffix indicates halogen-free, RoHS-compliant construction with matte tin-plated leads that meet J-STD-002 and JESD 22-B102 solderability requirements - essential for consistent assembly yield with the T15B20AHM3/H.
T15B20AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 56A
- 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-214AA (SMB)
T15B20AHM3/H FAQ
1.How can I place an order for T15B20AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T15B20AHM3/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 T15B20AHM3/H reliable?
The price and inventory of T15B20AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T15B20AHM3/H is usually 5 days.
3.What payment methods are accepted for T15B20AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T15B20AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T15B20AHM3/H?
T15B20AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T15B20AHM3/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 T15B20AHM3/H?
For technical support, including T15B20AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T15B20AHM3/H requirements.
6.How does Aetrix verify that T15B20AHM3/H is sourced from the original manufacturer or authorized distributors?
All T15B20AHM3/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 T15B20AHM3/H meets industry standards.
7.What is the process for return or replacement of T15B20AHM3/H?
All T15B20AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T15B20AHM3/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 T15B20AHM3/H part is unused and in its original packaging.
Return procedure for T15B20AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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