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Vishay General Semiconductor - Diodes Division T15B24AHM3/I
- Part No.:
- T15B24AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
T15B24AHM3/I.pdf
- Description:
- 1500 W UNI-DIRECTIONAL TVS IN SM
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
T15B24AHM3/I 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 33.2 V under 46.7 A surge, and operates with 20.5 V stand-off voltage and 22.8–25.2 V breakdown range at 1 mA test current.
For engineers reviewing the T15B24AHM3/I datasheet, T15B24AHM3/I pinout, T15B24AHM3/I application, or T15B24AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, TJ = 185 °C junction rating, SMB (DO-214AA) package compatibility, 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 configuration enables robust protection against positive-going transients on DC power rails and signal lines, with fast response time and low leakage (<1 μA at 20.5 V, 25 °C).
The device is rated for MSL Level 1 per J-STD-020 (260 °C reflow peak), halogen-free, RoHS-compliant, and qualified to AEC-Q101 - confirming suitability for high-reliability automotive environments where thermal stability up to +185 °C and long-term reliability under repetitive surge stress are mandatory.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 μs) | 1500 W - sustains high-energy surges without failure in automotive load-dump or inductive switching events |
| Breakdown Voltage VBR | 22.8–25.2 V at 1 mA - ensures reliable turn-on before downstream IC damage in 24 V systems |
| Stand-off Voltage VWM | 20.5 V - maintains low leakage during normal 24 V rail operation while allowing margin for ripple |
| Clamping Voltage VC | 33.2 V at 46.7 A - limits transient voltage seen by protected circuitry to safe levels |
| Operating Junction Temp. | −65 °C to +185 °C - supports under-hood deployment and extended thermal cycling life |
| ESD Immunity (IEC 61000-4-2) | ±30 kV contact/air - exceeds automotive EMC requirements for sensor and interface ports |
| Polarity & Package | Unidirectional, SMB (DO-214AA) - standard SMT footprint with cathode band marking for automated assembly |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, matte tin-plated leads, UL 94 V-0 molding compound, MSL Level 1 (260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-to-cathode forward path for clamping | Connected to protected line; conducts when transient exceeds VBR, shunting surge to ground |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return plane to complete clamping current path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR drift <0.085 %/°C and long-term reliability under thermal cycling |
| TJ = 185 °C capability | Supports continuous operation in engine compartment environments without derating |
| AEC-Q101 qualification | Validated for automotive use including HTOL, temperature cycling, and HAST stress tests |
| 1500 W peak pulse power | Withstands ISO 7637-2 Pulse 1/2a/5a transients and lightning-induced surges in 24 V systems |
| MSL Level 1 compliance | Enables single-pass reflow without moisture-related popcorn failure or delamination |
Applications
| Automotive Sensor Signal Protection | 24 V Power Rail Clamping |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine control modules exposed to load-dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output and ECU input to clamp positive transients before they reach precision ADC front-end. Use Value: Prevents sensor signal corruption and ECU latch-up by limiting transient voltage to ≤33.2 V while maintaining <1 μA leakage at 20.5 V operating bias. | Use Scenario: Safeguarding 24 V supply inputs to body control modules, lighting drivers, and infotainment head units against ISO 7637-2 Pulse 5a (load dump). IC Role / Device Role / Timing Role: Primary clamping device mounted at board-level power entry, parallel to bulk capacitance. Use Value: Absorbs 1500 W surge energy without degradation, enabling compliance with automotive OEM surge immunity requirements up to 35 V peak. |
| MOSFET Gate Protection | Infotainment Interface Port Protection |
Use Scenario: Shielding high-side N-channel MOSFET gates in LED driver circuits from inductive kickback during PWM switching. IC Role / Device Role / Timing Role: Low-capacitance TVS connected between gate and source to clamp gate-source voltage spikes. Use Value: Limits VGS to ≤33.2 V, preventing gate oxide breakdown while adding <1 pF parasitic capacitance at 0 V bias. | Use Scenario: ESD hardening of USB, CAN, or LIN physical layer interfaces in vehicle telematics units. IC Role / Device Role / Timing Role: Secondary-level protection placed upstream of transceiver ICs to absorb contact/air discharge per IEC 61000-4-2. Use Value: Withstands ±30 kV ESD strikes without parametric shift or failure, preserving signal integrity on high-speed data lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Same SMB package, 24 V nominal VBR, but lower 600 W PPPM rating and no AEC-Q101 qualification | Limited to industrial or consumer-grade 24 V systems without automotive qualification requirements | Select when cost sensitivity outweighs automotive reliability needs and surge energy is ≤600 W |
| 1.5SMC24A | Higher 1500 W rating but larger SMC (DO-214AB) package; same VBR range and unidirectional polarity | Requires PCB layout change due to 2.54 mm longer body and different pad dimensions | Choose only if existing design accommodates SMC footprint and higher mounting height is acceptable |
Compared with SMBJ24A and 1.5SMC24A, the T15B24AHM3/I uniquely combines AEC-Q101 qualification, 1500 W surge capacity, and SMB footprint - making it the only drop-in solution for space-constrained automotive modules requiring full OEM compliance.
Availability
T15B24AHM3/I is available at Aetrix Electronics and suitable for automotive sensor protection, 24 V power rail clamping, and MOSFET gate safeguarding requiring stable component supply across production lifecycles.
Supply support for T15B24AHM3/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 automotive-grade performance.
The T15B24AHM3/I belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for harsh-environment automotive electronics needing AEC-Q101 validation, high-temperature operation, and repeatable surge immunity.
FAQ
What is the maximum clamping voltage of the T15B24AHM3/I at its rated peak pulse current?
The T15B24AHM3/I has a maximum clamping voltage (VC) of 33.2 V at its rated peak pulse current of 46.7 A (10/1000 μs waveform). This value is measured per IEC 61000-4-5 and ensures protected circuitry remains below critical voltage thresholds during surge events. The T15B24AHM3/I achieves this clamping performance while maintaining low leakage and stable thermal behavior up to 185 °C junction temperature.
Is the T15B24AHM3/I qualified for automotive applications?
Yes, the T15B24AHM3/I is AEC-Q101 qualified and explicitly designed for automotive use. It meets stringent stress test requirements including high-temperature operating life (HTOL), temperature cycling, and humidity testing. Its 185 °C maximum junction temperature, MSL Level 1 reflow rating, and ±30 kV ESD immunity confirm suitability for under-hood and body electronics - all documented in Vishay's official qualification report for the T15BxxA series.
What does the "HM3" suffix indicate in T15B24AHM3/I?
"HM3" denotes Vishay's halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. The "H" indicates halogen-free molding compound; "M3" specifies matte tin-plated leads meeting J-STD-002 solderability and JESD 201 Class 2 whisker resistance. The "/I" suffix identifies the 13-inch tape-and-reel packaging option (3200 units per reel), distinct from "/H" (7-inch reel, 750 units).
Can the T15B24AHM3/I be used in bidirectional configurations?
No, the T15B24AHM3/I is strictly unidirectional and must be installed with correct polarity (cathode toward the protected line). It does not provide symmetrical clamping for negative transients. For bidirectional protection, Vishay offers separate parts such as the T15B24C series. Using the T15B24AHM3/I in reverse orientation risks permanent breakdown and failure - its datasheet specifies only unidirectional operation and defines parameters accordingly.
What is the leakage current specification for T15B24AHM3/I at its stand-off voltage?
The T15B24AHM3/I exhibits a maximum reverse leakage current (IR) of 1.0 μA at its stand-off voltage (VWM) of 20.5 V and ambient temperature of 25 °C. At elevated temperature (TJ = 150 °C), leakage rises to ≤12.0 μA - still well within safe limits for 24 V system monitoring circuits. This low leakage ensures minimal power loss and avoids false triggering in high-impedance sensing paths.
T15B24AHM3/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):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 46.7A
- 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)
T15B24AHM3/I FAQ
1.How can I place an order for T15B24AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for T15B24AHM3/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 T15B24AHM3/I reliable?
The price and inventory of T15B24AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T15B24AHM3/I is usually 5 days.
3.What payment methods are accepted for T15B24AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T15B24AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T15B24AHM3/I?
T15B24AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T15B24AHM3/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 T15B24AHM3/I?
For technical support, including T15B24AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T15B24AHM3/I requirements.
6.How does Aetrix verify that T15B24AHM3/I is sourced from the original manufacturer or authorized distributors?
All T15B24AHM3/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 T15B24AHM3/I meets industry standards.
7.What is the process for return or replacement of T15B24AHM3/I?
All T15B24AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with T15B24AHM3/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 T15B24AHM3/I part is unused and in its original packaging.
Return procedure for T15B24AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T15B24AHM3/I Tags
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