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Vishay General Semiconductor - Diodes Division T15B12AHM3/I
- Part No.:
- T15B12AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
T15B12AHM3/I.pdf
- Description:
- 1500 W UNI-DIRECTIONAL TVS IN SM
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
T15B12AHM3/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 17.0 V under 91.2 A surge, and operates with 12.0 V nominal breakdown voltage (VBR) and 10.2 V working maximum voltage (VWM). It is used to safeguard MOSFETs, ICs, and sensor signal lines against inductive switching transients and lightning-induced surges.
For engineers reviewing the T15B12AHM3/I datasheet, T15B12AHM3/I pinout, T15B12AHM3/I application, or T15B12AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C junction temperature rating, SMB (DO-214AA) package compatibility, and verified clamping performance at 91.2 A IPPM.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to achieve stable breakdown behavior and low leakage (<2.0 μA at VWM) across temperature. Its unidirectional architecture enables precise reverse-biased clamping without forward conduction during normal operation.
The device meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow capability and supports high-temperature reliability up to TJ = +185 °C - critical for under-hood automotive modules and industrial motor drives where thermal derating margins are constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 11.4 / 12.0 / 12.6 V - defines precise voltage threshold at which clamping initiates under 1 mA test current |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage exceeds 2.0 μA |
| IPPM | 91.2 A - peak surge current it safely shunts during 10/1000 μs transient without failure |
| VC | 17.0 V - clamped voltage seen by protected circuit at IPPM, determining downstream stress margin |
| PPPM | 1500 W - peak pulse power dissipation capability under standardized 10/1000 μs waveform |
| TJ max | +185 °C - enables operation in high-ambient environments without derating loss in surge capacity |
| ESD immunity | ±30 kV (contact/air) per IEC 61000-4-2 - provides robust system-level ESD hardening without external shielding |
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) | Transient current sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane to complete clamping loop |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JEDEC standards |
| Junction passivation | Stabilizes VBR over lifetime and prevents parametric drift under high-humidity or bias-temperature stress |
| MSL Level 1 rating | Enables single-pass lead-free reflow at 260 °C without popcorn or delamination risk |
| 185 °C TJ max | Supports uninterrupted surge protection in engine control units and power inverters operating near heat sources |
| Low clamping ratio (VC/VBR ≈ 1.42) | Minimizes overvoltage exposure to downstream ICs while maintaining fast response time (<1 ns) |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Motor Drive Interface |
|---|---|
Use Scenario: Protecting CAN transceiver signal lines and microcontroller I/O pins from load-dump and alternator ripple transients in 12 V vehicle systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp negative-going spikes and positive surges above VWM. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V logic interfaces while maintaining signal integrity due to low capacitance and sub-ns response. | Use Scenario: Shielding encoder feedback lines and Hall-effect sensor outputs from commutation noise in 3-phase BLDC motor controllers. IC Role / Device Role / Timing Role: Standoff protector on differential analog inputs, absorbing repetitive 1500 W surges induced by IGBT switching edges. Use Value: Ensures position accuracy and fault-free startup by limiting voltage excursion to ≤17.0 V at 91.2 A, preserving ADC reference stability. |
| Automotive Cabin Sensor Module | Industrial PLC Digital Input Card |
Use Scenario: Safeguarding MEMS accelerometer and ambient light sensor signal paths in infotainment and ADAS subsystems exposed to ESD events. IC Role / Device Role / Timing Role: ESD suppression element compliant with IEC 61000-4-2 ±30 kV, placed directly at connector entry point. Use Value: Eliminates need for secondary filtering components while meeting automotive EMC requirements without degrading signal bandwidth. | Use Scenario: Protecting 24 V DC digital input channels from field-wiring transients caused by relay coil de-energization or cable coupling. IC Role / Device Role / Timing Role: Primary transient absorber mounted adjacent to terminal block, shunting energy before reaching optocoupler input stage. Use Value: Extends mean time between failures (MTBF) by preventing opto-LED degradation and input-stage overstress under repeated 10/1000 μs surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | Same SMB package, 12 V VBR, but rated for 600 W PPPM and not AEC-Q101 qualified | Limited to commercial/industrial use; lacks automotive qualification and high-temp derating curve | Select when cost sensitivity outweighs automotive compliance and 185 °C operation |
| 1.5SMC12A | Higher 1500 W rating but in larger SMC (DO-214AB) package; VBR tolerance looser (11.4–12.6 V same), no AEC-Q101 certification | Requires PCB layout change; unsuitable for space-constrained automotive modules | Choose only if existing SMC footprint is fixed and AEC-Q101 is not required |
Compared with SMBJ12A and 1.5SMC12A, the T15B12AHM3/I uniquely combines AEC-Q101 qualification, SMB footprint, 1500 W capability, and +185 °C operation - enabling drop-in replacement in next-gen automotive ECUs without thermal or qualification compromises.
Availability
T15B12AHM3/I is available at Aetrix Electronics and suitable for automotive engine control units, industrial motor drive interfaces, and cabin sensor modules requiring stable component supply and long-term lifecycle support.
Supply support for T15B12AHM3/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 application-specific performance.
The T15B12AHM3/I belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for harsh-environment automotive and industrial transient suppression where thermal stability and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum clamping voltage of the T15B12AHM3/I at its rated peak pulse current?
The T15B12AHM3/I exhibits a maximum clamping voltage (VC) of 17.0 V when subjected to its rated peak pulse current (IPPM) of 91.2 A under the standard 10/1000 μs waveform. This value is measured per Figure 3 in the Vishay datasheet 98360 and ensures protected circuits remain below critical overvoltage thresholds during surge events. The T15B12AHM3/I maintains this clamping performance across its full operating temperature range.
Is the T15B12AHM3/I suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the T15B12AHM3/I is explicitly AEC-Q101 qualified per the Vishay datasheet 98360, making it suitable for automotive applications such as engine control units, body electronics, and ADAS sensor interfaces. Its qualification covers temperature cycling, high-temperature reverse bias, and ESD testing. The T15B12AHM3/I also supports junction temperatures up to +185 °C, exceeding typical automotive under-hood requirements.
What does the "HM3" suffix indicate in T15B12AHM3/I?
Within the T15B12AHM3/I part number, the "HM3" suffix denotes a halogen-free, RoHS-compliant construction with matte tin-plated leads that meet J-STD-002 solderability and JESD 22-B102 whisker resistance (Class 2). The "I" ending specifies packaging in 13-inch tape-and-reel format with 3200 units per reel. The T15B12AHM3/I thus satisfies environmental compliance and high-reliability assembly requirements simultaneously.
How does the T15B12AHM3/I compare to standard SMBJ-series TVS diodes in terms of surge handling?
The T15B12AHM3/I delivers 1500 W peak pulse power (10/1000 μs), double the 600 W rating of standard SMBJ12A devices. It achieves this in the same SMB (DO-214AA) footprint through optimized junction passivation and thermal design. Unlike SMBJ12A, the T15B12AHM3/I is AEC-Q101 qualified and rated for +185 °C operation - making it appropriate for demanding automotive and industrial surge scenarios where the T15B12AHM3/I outperforms legacy alternatives.
What is the reverse leakage current specification for the T15B12AHM3/I at its maximum working voltage?
At its maximum working voltage (VWM) of 10.2 V and ambient temperature of 25 °C, the T15B12AHM3/I specifies a maximum reverse leakage current (IR) of 2.0 μA. At elevated junction temperature (TJ = 150 °C), leakage increases to 12.0 μA - a value confirmed in the Electrical Characteristics table of Vishay document 98360. This low leakage ensures minimal power loss and signal interference in always-on automotive sensor circuits using the T15B12AHM3/I.
T15B12AHM3/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:
- 17V
- Current - Peak Pulse (10/1000µs):
- 91.2A
- 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)
T15B12AHM3/I FAQ
1.How can I place an order for T15B12AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for T15B12AHM3/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 T15B12AHM3/I reliable?
The price and inventory of T15B12AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T15B12AHM3/I is usually 5 days.
3.What payment methods are accepted for T15B12AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T15B12AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T15B12AHM3/I?
T15B12AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T15B12AHM3/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 T15B12AHM3/I?
For technical support, including T15B12AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T15B12AHM3/I requirements.
6.How does Aetrix verify that T15B12AHM3/I is sourced from the original manufacturer or authorized distributors?
All T15B12AHM3/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 T15B12AHM3/I meets industry standards.
7.What is the process for return or replacement of T15B12AHM3/I?
All T15B12AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with T15B12AHM3/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 T15B12AHM3/I part is unused and in its original packaging.
Return procedure for T15B12AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T15B12AHM3/I Tags
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