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Vishay General Semiconductor - Diodes Division T15B15AHM3/I
- Part No.:
- T15B15AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
T15B15AHM3/I.pdf
- Description:
- 1500 W UNI-DIRECTIONAL TVS IN SM
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
T15B15AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for high-reliability automotive and industrial electronics protection. It delivers 1500 W peak pulse power (10/1000 μs), clamps at 21.2 V under 73.1 A surge current, and operates up to 185 °C junction temperature in SMB (DO-214AA) package - protecting MOSFETs and sensor signal lines against inductive switching transients and lightning-induced surges.
For engineers reviewing the T15B15AHM3/I datasheet, T15B15AHM3/I pinout, T15B15AHM3/I application, or T15B15AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, 15.0 V nominal breakdown voltage, 12.8 V stand-off voltage, 1.0 μA max reverse leakage at VWM, and MSL Level 1 moisture sensitivity rating for robust reflow compatibility.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for junction stability under high-temperature stress. Its unidirectional architecture provides low-clamping-voltage protection with fast response time and excellent surge handling across automotive-grade thermal cycles.
The device meets IEC 61000-4-2 ESD immunity (±30 kV contact/air discharge) and is rated for non-repetitive 10/1000 μs waveform pulses. Its TJ = −65 °C to +185 °C operating range and halogen-free HM3 suffix support stringent automotive reliability requirements per AEC-Q101.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage (VBR) | 14.3 V min / 15.0 V nom / 15.8 V max - defines precise conduction threshold for overvoltage clamping |
| Stand-off Voltage (VWM) | 12.8 V - maximum continuous reverse voltage before significant leakage begins |
| Peak Pulse Power (PPPM) | 1500 W (10/1000 μs) - sustains high-energy transients without failure |
| Clamping Voltage (VC) | 21.2 V at 73.1 A - limits downstream voltage during surge events |
| Junction Temperature Range | −65 °C to +185 °C - enables operation in under-hood automotive environments |
| ESD Immunity | ±30 kV (IEC 61000-4-2, contact & air) - protects against human-body-model electrostatic discharge |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to protected line; conducts transient energy to ground when VBR exceeded |
| Anode | Reference/ground return | Typically tied to system ground; completes clamping path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Enhances long-term reliability under thermal cycling and humidity exposure |
| TJ = 185 °C capability | Supports placement near high-power components in engine control units and ADAS modules |
| MSL Level 1 rating | Enables single-reflow assembly without baking, reducing manufacturing complexity |
| AEC-Q101 qualification | Validates suitability for automotive electronic systems requiring zero-failure field performance |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting microcontroller I/O and driver outputs from load-dump and inductive kickback in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed across signal/power lines to clamp transients before they reach sensitive logic inputs. Use Value: Prevents latch-up or permanent damage to MCU pins during alternator load dump events (ISO 7637-2 Pulse 5a). | Use Scenario: Shielding analog front-end circuits of pressure/temperature sensors from EFT and surge noise in factory automation equipment. IC Role / Device Role / Timing Role: Standoff-mode protector on sensor output lines, maintaining signal integrity while blocking >21 V spikes. Use Value: Ensures stable 4–20 mA or 0–10 V output accuracy despite repetitive 1 kV/50 Hz burst interference. |
| Automotive Camera Module Interface | Power Supply Input Protection |
Use Scenario: Safeguarding MIPI CSI-2 data lanes and power rails in surround-view camera systems exposed to EMC stress. IC Role / Device Role / Timing Role: Low-capacitance TVS on high-speed video lines, minimizing signal distortion while suppressing ESD. Use Value: Maintains <1 pF junction capacitance at zero bias to avoid degrading 1.5 Gbps differential signaling integrity. | Use Scenario: Secondary overvoltage protection on DC-DC converter input stage following primary fuse and MOV stages. IC Role / Device Role / Timing Role: Fast-response clamping element that activates after slower protectors to handle residual high-energy spikes. Use Value: Limits input rail overshoot to ≤21.2 V during 1500 W surge events, preventing downstream regulator latch-off or capacitor rupture. |
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, 15 V VBR, but lower PPPM = 600 W and no AEC-Q101 qualification | Not suitable for automotive under-hood use; limited to commercial-grade industrial controls | Select only if cost-sensitive and thermal/environmental stress is minimal |
| 1.5SMC15A | Higher PPPM = 1500 W, same VBR, but larger SMC (DO-214AB) package and no MSL Level 1 rating | Requires PCB layout change; not compatible with fine-pitch automated assembly | Choose only when board space allows larger footprint and reflow profile flexibility exists |
Compared with SMBJ15A and 1.5SMC15A, the T15B15AHM3/I uniquely combines AEC-Q101 qualification, MSL Level 1, and SMB packaging - enabling drop-in deployment in automotive production lines without process or layout revision.
Availability
T15B15AHM3/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, and camera module protection requiring stable component supply and full AEC-Q101 compliance.
Supply support for T15B15AHM3/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 reliability and high-temperature performance.
The T15B15AHM3/I belongs to Vishay's PAR® (Protected Anisotropic Rectifier) TVS family, engineered specifically for automotive-grade transient suppression where high junction temperature tolerance and repeatable clamping behavior are critical.
FAQ
What is the exact breakdown voltage range for T15B15AHM3/I?
The T15B15AHM3/I has a guaranteed breakdown voltage (VBR) range of 14.3 V (minimum) to 15.8 V (maximum) at 1.0 mA test current, with 15.0 V nominal. This tight tolerance ensures consistent clamping onset across production lots and supports precise overvoltage margin design in safety-critical automotive circuits.
Is T15B15AHM3/I qualified for automotive use?
Yes, the T15B15AHM3/I is AEC-Q101 qualified and rated for operation from −65 °C to +185 °C junction temperature. Its HM3 suffix confirms halogen-free, RoHS-compliant construction and JESD201 Class 2 whisker resistance - meeting full automotive reliability requirements for under-hood and ADAS applications.
What does the "HM3" suffix mean in T15B15AHM3/I?
The "HM3" suffix in T15B15AHM3/I indicates halogen-free, RoHS-compliant molding compound, AEC-Q101 qualification, and compliance with JESD201 Class 2 whisker testing. It also denotes packaging in 13" diameter plastic tape and reel (3200 units per reel), distinguishing it from the "H" variant (750 units, 7" reel).
How does T15B15AHM3/I compare to standard SMBJ series TVS diodes?
The T15B15AHM3/I exceeds standard SMBJ15A in peak pulse power (1500 W vs. 600 W), junction temperature rating (+185 °C vs. +150 °C), and automotive qualification (AEC-Q101 certified). Unlike SMBJ15A, the T15B15AHM3/I maintains stable clamping performance across extended thermal cycles and high-humidity conditions typical in automotive environments.
What is the maximum clamping voltage of T15B15AHM3/I under surge conditions?
The T15B15AHM3/I exhibits a maximum clamping voltage (VC) of 21.2 V at 73.1 A peak pulse current (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 standards and ensures downstream ICs remain within safe operating voltage margins during high-energy transients.
T15B15AHM3/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):
- 73.1A
- 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)
T15B15AHM3/I FAQ
1.How can I place an order for T15B15AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for T15B15AHM3/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 T15B15AHM3/I reliable?
The price and inventory of T15B15AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T15B15AHM3/I is usually 5 days.
3.What payment methods are accepted for T15B15AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T15B15AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T15B15AHM3/I?
T15B15AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T15B15AHM3/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 T15B15AHM3/I?
For technical support, including T15B15AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T15B15AHM3/I requirements.
6.How does Aetrix verify that T15B15AHM3/I is sourced from the original manufacturer or authorized distributors?
All T15B15AHM3/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 T15B15AHM3/I meets industry standards.
7.What is the process for return or replacement of T15B15AHM3/I?
All T15B15AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with T15B15AHM3/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 T15B15AHM3/I part is unused and in its original packaging.
Return procedure for T15B15AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T15B15AHM3/I Tags
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