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Vishay T15B47AHM3/H
- Part No.:
- T15B47AHM3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
T15B47AHM3/H.pdf
- Description:
- 1.5KW,47V 5%,SMB PAR
- Quantity:
- Payment:
- Shipping:
Inventory:5,309
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Product details
Overview
T15B47AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive-grade circuit protection. It delivers 1500 W peak pulse power (10/1000 μs), clamps at 64.8 V under 23.9 A surge current, and operates with a 40.2 V stand-off voltage and 44.7–49.4 V breakdown range at 1 mA test current. It is used to protect MOSFETs, sensor signal lines, and ICs against inductive switching transients and lightning-induced surges in under-hood automotive electronics.
For engineers reviewing the T15B47AHM3/H datasheet, T15B47AHM3/H pinout, T15B47AHM3/H application, or T15B47AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C maximum junction temperature, SMB (DO-214AA) package compatibility, and verified clamping performance under 10/1000 μs waveform conditions.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-reliability automotive environments. Its unidirectional architecture provides low-leakage reverse blocking up to 40.2 V while enabling fast response to transient overvoltage events.
The device meets MSL Level 1 per J-STD-020 with a 260 °C lead-free reflow peak, supports 30 kV IEC 61000-4-2 ESD immunity (contact and air discharge), and features a temperature coefficient of breakdown voltage of +0.092 %/°C - enabling stable clamping behavior across -65 °C to +185 °C operating and storage ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 40.2 V - Maximum continuous reverse working voltage before leakage exceeds 1 μA; defines safe operating margin below breakdown. |
| VBR (min/typ/max) | 44.7 / 47.0 / 49.4 V at 1 mA - Confirmed breakdown threshold ensures predictable turn-on during transients. |
| VC @ IPPM | 64.8 V at 23.9 A - Clamping voltage under full 1500 W surge; determines protected circuit's maximum stress level. |
| PPPM | 1500 W (10/1000 μs) - Peak surge power handling capacity; validates robustness against automotive load-dump and ISO 7637-2 pulses. |
| TJ max | +185 °C - Enables operation in high-temperature under-hood locations without derating penalties. |
| ESD Rating | ±30 kV (IEC 61000-4-2 contact/air) - Ensures immunity to human-body-model and system-level electrostatic discharges. |
| AEC-Q101 | Qualified - Meets stress-test requirements for automotive discrete semiconductors including HTGB, HTRB, and TCT. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated leads. 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 VWM exceeded. |
| Anode | Reference/return path | Typically tied to system ground or low-impedance return; completes clamping path during overvoltage event. |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable leakage (<1 μA at VWM) and long-term reliability under thermal cycling. |
| High-temperature capability | Rated for continuous operation up to +185 °C junction temperature - eliminates need for thermal derating in engine-control modules. |
| Fast response time | Sub-nanosecond clamping onset enables protection of high-speed sensor interfaces and CAN transceivers. |
| MSL Level 1 rating | Compatible with standard lead-free reflow profiles (peak 260 °C); no floor-life management required prior to assembly. |
| AEC-Q101 qualification | Validated for automotive use via HTGB (1000 hrs @ 150 °C), HTRB (1000 hrs @ 150 °C), and temperature cycling (1000 cycles -40/+125 °C). |
Applications
| Engine Control Unit (ECU) Power Input Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 12 V supply rail of engine control units against ISO 7637-2 pulse 1 (inductive switch-off) and pulse 3a/b (load dump). IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery input and DC/DC converter input stage. Use Value: Limits transient voltage to ≤64.8 V, preventing damage to downstream PMICs and microcontrollers rated for 40 V absolute maximum. | Use Scenario: Shields analog output lines of pressure, temperature, and position sensors from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS connected between sensor signal trace and chassis ground, adjacent to connector. Use Value: Maintains signal integrity with <1 μA leakage at 40.2 V, while suppressing ±30 kV ESD spikes before they reach ADC front-end. |
| Body Control Module (BCM) LIN Bus Protection | Electric Power Steering (EPS) Motor Driver Protection |
Use Scenario: Guards LIN transceiver I/O pins against board-level ESD and coupled noise from nearby solenoid drivers. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed directly at LIN connector interface. Use Value: Clamps transients within nanoseconds without distorting 19.2 kbps LIN signaling due to minimal parasitic capacitance. | Use Scenario: Safeguards half-bridge gate drivers and current-sense shunts from motor commutation spikes and back-EMF surges. IC Role / Device Role / Timing Role: TVS installed across motor phase outputs and ground on EPS inverter PCB. Use Value: Absorbs 1500 W surges without degradation, sustaining 185 °C junction temperature during sustained high-load steering maneuvers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ45A-H | Lower PPPM (600 W), higher VC (72.7 V at 8.3 A), same SMB package and unidirectional polarity. | Not AEC-Q101 qualified; limited to industrial/commercial grade designs without automotive qualification requirements. | Select only if AEC-Q101 is not mandated and surge energy is ≤600 W. |
| TPSMA6.8A-Q | Lower VWM (5.8 V), lower PPPM (400 W), AEC-Q101 qualified, same SMB footprint. | Designed for low-voltage logic-level protection (e.g., MCU I/O), not 12 V automotive power rails. | Use only for sub-10 V signal-line protection where clamping voltage must stay below 11.5 V. |
Compared with SMBJ45A-H and TPSMA6.8A-Q, T15B47AHM3/H uniquely combines AEC-Q101 qualification, 1500 W surge rating, and 40.2 V stand-off voltage - making it the only option among the three validated for high-energy, high-temperature automotive power-rail protection.
Availability
T15B47AHM3/H is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, electric power steering systems, and ADAS sensor interfaces requiring stable component supply under AEC-Q101 compliance and high-temperature operational continuity.
Supply support for T15B47AHM3/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, power efficiency, and automotive-grade qualification.
The T15BxxA family was engineered specifically for high-temperature, high-reliability automotive transient suppression - targeting under-hood applications where conventional TVS devices fail due to thermal instability or insufficient surge margin.
FAQ
What is the maximum clamping voltage of the T15B47AHM3/H under peak surge conditions?
The T15B47AHM3/H exhibits a maximum clamping voltage (VC) of 64.8 V when subjected to its rated peak pulse current of 23.9 A (10/1000 μs waveform). This value is measured per IEC 61000-4-5 and confirmed in Vishay's datasheet revision 19-Jan-2024, Document Number 98360. The clamping performance remains stable across its full operating temperature range up to +185 °C junction temperature.
Is the T15B47AHM3/H qualified to AEC-Q101 standards?
Yes, the T15B47AHM3/H is fully AEC-Q101 qualified. Vishay's documentation confirms qualification across all required stress tests including high-temperature gate bias (HTGB), high-temperature reverse bias (HTRB), and temperature cycling (TCT). The HM3 suffix explicitly denotes AEC-Q101 compliance, halogen-free construction, and JESD201 Class 2 whisker resistance - critical for automotive production release.
What package type does the T15B47AHM3/H use, and what are its mounting requirements?
The T15B47AHM3/H uses the SMB (DO-214AA) surface-mount package with matte tin-plated leads. It meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Recommended pad layout dimensions are provided in the Vishay datasheet (0.086" × 0.220" outline), and the cathode is marked by a visible band - correct orientation is essential for unidirectional clamping functionality in the T15B47AHM3/H.
How does the T15B47AHM3/H perform under high-temperature operating conditions?
The T15B47AHM3/H is rated for continuous operation from -65 °C to +185 °C junction temperature. Its breakdown voltage has a positive temperature coefficient of +0.092 %/°C, ensuring predictable, monotonic increase in VBR with temperature - critical for maintaining design margin in under-hood environments. Derating curves in the datasheet confirm full 1500 W surge capability remains usable up to 125 °C ambient with appropriate PCB thermal design.
What is the ESD immunity rating of the T15B47AHM3/H, and which standard does it meet?
The T15B47AHM3/H achieves ±30 kV ESD immunity per IEC 61000-4-2, covering both contact and air discharge test methods. This rating is verified in Vishay's characterization data and reflects the device's ability to absorb and dissipate high-voltage electrostatic events without parametric shift or failure - a key requirement for protecting exposed connectors and sensor interfaces in automotive systems using the T15B47AHM3/H.
T15B47AHM3/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):
- 40.2V
- Voltage - Breakdown (Min):
- 44.7V
- Voltage - Clamping (Max) @ Ipp:
- 64.8V
- Current - Peak Pulse (10/1000µs):
- 23.9A
- 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)
T15B47AHM3/H FAQ
1.How can I place an order for T15B47AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T15B47AHM3/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 T15B47AHM3/H reliable?
The price and inventory of T15B47AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T15B47AHM3/H is usually 5 days.
3.What payment methods are accepted for T15B47AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T15B47AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T15B47AHM3/H?
T15B47AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T15B47AHM3/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 T15B47AHM3/H?
For technical support, including T15B47AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T15B47AHM3/H requirements.
6.How does Aetrix verify that T15B47AHM3/H is sourced from the original manufacturer or authorized distributors?
All T15B47AHM3/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 T15B47AHM3/H meets industry standards.
7.What is the process for return or replacement of T15B47AHM3/H?
All T15B47AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T15B47AHM3/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 T15B47AHM3/H part is unused and in its original packaging.
Return procedure for T15B47AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T15B47AHM3/H Tags
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