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Vishay T15B15AHM3/H
- Part No.:
- T15B15AHM3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
T15B15AHM3/H.pdf
- Description:
- 1.5KW,15V 5%,SMB PAR
- Quantity:
- Payment:
- Shipping:
Inventory:3,112
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Product details
Overview
T15B15AHM3/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 21.2 V under 73.1 A surge current, and operates up to +185 °C junction temperature-enabling robust protection of MOSFETs, sensor signal lines, and ICs in engine control units and body electronics.
For engineers reviewing the T15B15AHM3/H datasheet, T15B15AHM3/H pinout, T15B15AHM3/H application, or T15B15AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, SMB (DO-214AA) package, 15.0 V nominal breakdown voltage, 12.8 V stand-off voltage, and 1.0 μA max reverse leakage at TJ = 150 °C.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping performance across wide temperature ranges. Its unidirectional architecture provides low dynamic impedance during transients while maintaining tight VBR tolerance (±5% at IT = 1.0 mA) and a positive temperature coefficient (0.076 %/°C).
Designed for high-reliability automotive environments, it meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow compatibility and passes JESD201 Class 2 whisker testing. The device sustains 30 kV ESD immunity (IEC 61000-4-2, contact/air discharge) and exhibits <1 ns response time to fast-rising transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 14.3 / 15.0 / 15.8 V - Ensures reliable turn-on before downstream circuit damage; ±5% tolerance supports precise system-level margining. |
| VWM | 12.8 V - Maximum continuous operating voltage without significant leakage; compatible with 12 V automotive supply rails. |
| IPPM | 73.1 A - Peak surge current capability with 10/1000 μs waveform; defines maximum energy absorption per transient event. |
| VC @ IPPM | 21.2 V - Clamping voltage under full surge; limits stress on protected ICs to safe levels during load dump or inductive switching. |
| TJ max | +185 °C - Enables operation in under-hood environments without derating; eliminates need for thermal margining in high-temp zones. |
| ESD Rating | 30 kV (IEC 61000-4-2) - Provides immunity to human-body-model and contact-discharge events in assembly and field use. |
| Package | SMB (DO-214AA) - Industry-standard SMT footprint with 0.220" x 0.130" outline; optimized for automated placement and high-volume reflow. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads solderable per J-STD-002. Cathode denoted by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VBR exceeded. |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment systems per stress test requirements. |
| Junction passivation | Stabilizes VBR drift over temperature and lifetime; ensures <±5% variation from -65 °C to +185 °C. |
| 1500 W peak pulse power | Handles ISO 7637-2 Pulse 5a (load dump) and Pulse 1/2a (inductive switch-off) without degradation. |
| MSL Level 1 rating | Supports unlimited floor life and single-reflow processing at 260 °C peak, eliminating moisture sensitivity handling overhead. |
| 30 kV ESD immunity | Eliminates need for additional ESD protection stages on sensor interfaces and LIN/CAN bus lines. |
Applications
| Engine Control Unit (ECU) Power Input | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 12 V supply rail of engine control modules against load dump transients (ISO 7637-2 Pulse 5a) and alternator overshoot. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC/DC converter input stage. Use Value: Clamps to 21.2 V at 73.1 A, preventing overvoltage damage to LDOs and microcontrollers while sustaining 185 °C junction temperature. | Use Scenario: Shields analog output lines of pressure, temperature, and position sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS connected inline with sensor signal trace and grounded via shortest possible path. Use Value: 30 kV IEC 61000-4-2 immunity and sub-1 ns response preserve signal integrity without adding jitter or attenuation. |
| Body Control Module (BCM) LIN Bus Interface | Automotive Lighting Driver Output Stage |
Use Scenario: Guards LIN transceiver pins against coupling from adjacent high-current loads (e.g., window motors, seat actuators). IC Role / Device Role / Timing Role: Unidirectional TVS mounted at connector entry point, cathode to LIN line, anode to chassis ground. Use Value: 12.8 V VWM avoids false triggering during normal LIN signaling (dominant/recessive levels), while clamping fast spikes below 21.2 V. | Use Scenario: Protects MOSFET gate drivers and LED string outputs from inductive kickback during PWM dimming cycles. IC Role / Device Role / Timing Role: TVS placed across driver output and ground to absorb energy from relay or solenoid coil flyback. Use Value: 1500 W peak pulse power handles repetitive 10/1000 μs surges without parametric shift or thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Same SMB package, 15 V VBR, but rated for 400 W PPPM and not AEC-Q101 qualified. | Limited to industrial/commercial use; unsuitable for automotive under-hood deployment. | Select only if AEC-Q101 compliance and 1500 W surge handling are not required. |
| 1.5SMC15A | Higher 1500 W rating and same VBR, but in larger SMC (DO-214AB) package with different footprint and thermal mass. | Requires PCB layout change; higher thermal inertia may delay response in fast-edge scenarios. | Choose when board space allows SMC and legacy design reuse is prioritized over footprint compatibility. |
Compared with SMAJ15A and 1.5SMC15A, T15B15AHM3/H uniquely combines AEC-Q101 qualification, SMB footprint, 1500 W rating, and +185 °C operation-making it the only drop-in solution for next-generation automotive ECUs requiring zero layout change and extended temperature resilience.
Availability
T15B15AHM3/H is available at Aetrix Electronics and suitable for automotive power distribution, sensor interface protection, and lighting driver circuits requiring stable component supply, long-term lifecycle support, and consistent AEC-Q101 conformance.
Supply support for T15B15AHM3/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 high-reliability diodes, MOSFETs, and optoelectronics for automotive, industrial, and computing markets.
The T15B15AHM3/H belongs to Vishay's PAR® TVS family-engineered specifically for automotive-grade transient suppression where high-temperature stability, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What is the maximum clamping voltage of the T15B15AHM3/H under full-rated surge current?
The T15B15AHM3/H has a maximum clamping voltage (VC) of 21.2 V when subjected to its rated peak pulse current (IPPM) of 73.1 A using a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 98360) and ensures downstream components remain within safe operating voltage limits during transient events. The T15B15AHM3/H maintains this clamping performance across its full operating temperature range.
Is the T15B15AHM3/H qualified for automotive applications?
Yes, the T15B15AHM3/H is fully AEC-Q101 qualified, meaning it has passed rigorous stress tests-including high-temperature operating life, temperature cycling, and ESD immunity-required for automotive electronic components. Its +185 °C maximum junction temperature and MSL Level 1 reflow rating further confirm suitability for under-hood and safety-critical systems. The T15B15AHM3/H is explicitly listed in Vishay's AEC-Q101 qualified products table.
What does the "HM3" suffix indicate in T15B15AHM3/H?
The "HM3" suffix in T15B15AHM3/H denotes a halogen-free, RoHS-compliant construction with matte tin-plated leads that meet J-STD-002 solderability and JESD201 Class 2 whisker resistance requirements. The trailing "/H" specifies packaging in 7" diameter plastic tape and reel with 750 units per reel. This configuration ensures compatibility with high-speed SMT assembly lines and long-term reliability in automotive manufacturing.
How does the T15B15AHM3/H compare to standard SMAJ series TVS diodes?
The T15B15AHM3/H delivers 1500 W peak pulse power-3.75× higher than the 400 W rating of SMAJ15A-while sharing the same SMB footprint and 15 V breakdown voltage. Unlike SMAJ15A, the T15B15AHM3/H is AEC-Q101 qualified and rated for +185 °C operation. These differences make the T15B15AHM3/H suitable for demanding automotive applications where SMAJ15A would fail thermally or lack qualification compliance.
Can the T15B15AHM3/H be used in bidirectional configurations?
No, the T15B15AHM3/H is strictly unidirectional and must be installed with the cathode (banded end) toward the protected line. It does not provide symmetrical clamping for AC or bipolar transients. For bidirectional protection, Vishay offers complementary devices such as the T15B15AHM3/HE (dual-diode configuration) or separate back-to-back unidirectional TVS placements. Using T15B15AHM3/H in reverse polarity will result in forward conduction and potential failure.
T15B15AHM3/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):
- 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/H FAQ
1.How can I place an order for T15B15AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T15B15AHM3/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 T15B15AHM3/H reliable?
The price and inventory of T15B15AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T15B15AHM3/H is usually 5 days.
3.What payment methods are accepted for T15B15AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T15B15AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T15B15AHM3/H?
T15B15AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T15B15AHM3/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 T15B15AHM3/H?
For technical support, including T15B15AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T15B15AHM3/H requirements.
6.How does Aetrix verify that T15B15AHM3/H is sourced from the original manufacturer or authorized distributors?
All T15B15AHM3/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 T15B15AHM3/H meets industry standards.
7.What is the process for return or replacement of T15B15AHM3/H?
All T15B15AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T15B15AHM3/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 T15B15AHM3/H part is unused and in its original packaging.
Return procedure for T15B15AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T15B15AHM3/H Tags
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