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Vishay General Semiconductor - Diodes Division T15B47AHM3/I
- Part No.:
- T15B47AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
T15B47AHM3/I.pdf
- Description:
- 1500 W UNI-DIRECTIONAL TVS IN SM
- Quantity:
- Payment:
- Shipping:
Inventory:2,600
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Product details
Overview
T15B47AHM3/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 64.8 V under 23.9 A surge, and operates up to +185 °C junction temperature in SMB (DO-214AA) package.
For engineers reviewing the T15B47AHM3/I datasheet, T15B47AHM3/I pinout, T15B47AHM3/I application, or T15B47AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, 40.2 V stand-off voltage, <1.0 μA reverse leakage at VWM, 30 kV ESD immunity (IEC 61000-4-2), and MSL Level 1 reflow compatibility.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable breakdown voltage with ±5% tolerance (44.7–49.4 V) and low temperature coefficient (0.092 %/°C). Its unidirectional architecture enables precise clamping on positive transients while maintaining low leakage (<1.0 μA at 40.2 V) across -65 °C to +185 °C operating range.
The device meets automotive-grade reliability requirements including JESD201 Class 2 whisker resistance, halogen-free/RoHS-compliant HM3 packaging, and UL 94 V-0 molding compound. Its SMB (DO-214AA) footprint supports automated assembly with matte tin-plated leads solderable per J-STD-002 and JESD22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 1500 W (10/1000 μs waveform; sustains high-energy surges without failure) |
| Breakdown Voltage VBR | 44.7–49.4 V (ensures reliable triggering above 40.2 V stand-off, ±5% tolerance) |
| Clamping Voltage VC | 64.8 V at 23.9 A (limits downstream voltage stress during 10/1000 μs transients) |
| Stand-off Voltage VWM | 40.2 V (blocks normal operating signals while allowing fast response to overvoltage) |
| Junction Temperature Range | -65 °C to +185 °C (supports under-hood automotive and high-temp industrial environments) |
| ESD Immunity | ±30 kV contact/air (IEC 61000-4-2; protects against human-body-model discharges) |
| Polarity | Unidirectional (cathode-banded; optimized for DC-biased signal/power line protection) |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected line; conducts during positive overvoltage events |
| Anode | Cathode of internal PN junction | Typically tied to ground or lower-potential reference; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics use, including engine control, body modules, and ADAS sensor interfaces |
| 185 °C maximum junction temperature | Enables placement near heat sources (e.g., power converters, motor drivers) without derating |
| Passivated anisotropic rectifier technology | Delivers stable VBR over temperature and lifetime, minimizing parameter drift in harsh environments |
| MSL Level 1 rating | Allows single-pass reflow at 260 °C without moisture-induced damage or popcorn effect |
| 30 kV ESD immunity | Provides robust protection against electrostatic discharge during handling and system operation |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load-dump and alternator switching transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and ground to clamp surges before they reach LDOs or microcontrollers. Use Value: Withstands 1500 W pulses and operates up to +185 °C, enabling direct placement on under-hood PCBs without thermal derating. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Standoff-rated TVS on 4–20 mA current loop or 0–10 V output lines to absorb field-induced transients. Use Value: 40.2 V VWM ensures no conduction during normal operation; 64.8 V clamping prevents ADC input saturation during surge events. |
| Automotive CAN Bus Transient Suppression | Motor Drive Gate Driver Protection |
Use Scenario: Secondary protection on CAN_H/CAN_L lines downstream of common-mode chokes in automotive gateways. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS suppressing differential-mode surges while preserving signal integrity. Use Value: Sub-100 pF junction capacitance (typ.) minimizes signal distortion; AEC-Q101 qualification ensures long-term reliability in vehicle networks. | Use Scenario: Clamping voltage spikes induced by MOSFET/IGBT switching on high-side gate drive supply rails. IC Role / Device Role / Timing Role: Fast-response TVS placed between gate driver VDD and GND to prevent overvoltage damage to level-shifters or isolators. Use Value: 23.9 A IPPM capability handles high di/dt transients; 185 °C TJ rating matches gate driver thermal environment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ48A | VBR = 53.3–58.9 V; VWM = 48 V; VC = 77.4 V at 19.4 A; same SMB package | Higher stand-off and clamping voltages; less suitable for 40 V nominal systems | Select when protecting 48 V automotive subsystems or industrial 48 V rails |
| 1.5SMC47A | VBR = 44.7–49.4 V; VWM = 40.2 V; VC = 64.8 V at 23.9 A; SMC (DO-214AB) package, larger footprint | Same electrical specs but 2.5× larger package; not drop-in compatible | Choose only if higher power margin is needed and board space allows SMC footprint |
Compared with SMBJ48A and 1.5SMC47A, the T15B47AHM3/I offers optimal balance of 40.2 V stand-off, 64.8 V clamping, AEC-Q101 qualification, and compact SMB footprint-making it the preferred choice for space-constrained 12 V/24 V automotive and industrial designs requiring high-temperature resilience.
Availability
T15B47AHM3/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor interfaces, motor drive gate driver circuits, and CAN bus protection requiring stable component supply and long-term lifecycle support.
Supply support for T15B47AHM3/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 qualification.
The T15B47AHM3/I belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for demanding automotive and industrial transient suppression where high-temperature operation and AEC-Q101 compliance are mandatory.
FAQ
What is the maximum clamping voltage of the T15B47AHM3/I under standard test conditions?
The T15B47AHM3/I has a maximum clamping voltage (VC) of 64.8 V when subjected to its rated peak pulse current of 23.9 A using a 10/1000 μs waveform. This value is measured per IEC 61000-4-5 and ensures predictable voltage limiting during surge events. The T15B47AHM3/I maintains this clamping performance across its full operating temperature range, supporting robust design margins in automotive and industrial applications.
Is the T15B47AHM3/I qualified for automotive applications?
Yes, the T15B47AHM3/I is AEC-Q101 qualified and explicitly rated for automotive use. It meets stringent reliability requirements including 185 °C maximum junction temperature, MSL Level 1 reflow compatibility, JESD201 Class 2 whisker resistance, and 30 kV ESD immunity per IEC 61000-4-2. These qualifications make the T15B47AHM3/I suitable for engine control units, body electronics, ADAS sensors, and other safety-critical automotive subsystems.
What does the "HM3" suffix indicate in T15B47AHM3/I?
"HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads and UL 94 V-0 molding compound. The "I" suffix specifies packaging in 13-inch diameter plastic tape and reel, containing 3200 units per reel. This distinguishes T15B47AHM3/I from the "H" variant (7-inch reel, 750 units), ensuring correct logistics and assembly planning for high-volume production of the T15B47AHM3/I.
How does the T15B47AHM3/I compare to older generation TVS diodes in terms of temperature stability?
The T15B47AHM3/I features a temperature coefficient of VBR of 0.092 %/°C and is rated for continuous operation up to +185 °C junction temperature-significantly exceeding legacy TVS diodes limited to +150 °C. Its passivated anisotropic rectifier technology minimizes VBR drift over temperature, enabling stable clamping behavior in under-hood and industrial environments where thermal cycling is severe. This makes the T15B47AHM3/I more reliable than earlier-generation parts in high-temperature deployments.
Can the T15B47AHM3/I be used in bidirectional configurations?
No, the T15B47AHM3/I is a unidirectional TVS diode, identified by its cathode band marking and specified electrical characteristics (e.g., VWM, VBR, VC) for positive-only transients. For bidirectional protection-such as AC line or data bus applications-engineers must select a dedicated bidirectional variant like the T15B47CA series. Using the T15B47AHM3/I in reverse-biased configurations risks premature breakdown or unreliable clamping, as its design and qualification are strictly for unidirectional operation.
T15B47AHM3/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):
- 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/I FAQ
1.How can I place an order for T15B47AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for T15B47AHM3/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 T15B47AHM3/I reliable?
The price and inventory of T15B47AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T15B47AHM3/I is usually 5 days.
3.What payment methods are accepted for T15B47AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T15B47AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T15B47AHM3/I?
T15B47AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T15B47AHM3/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 T15B47AHM3/I?
For technical support, including T15B47AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T15B47AHM3/I requirements.
6.How does Aetrix verify that T15B47AHM3/I is sourced from the original manufacturer or authorized distributors?
All T15B47AHM3/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 T15B47AHM3/I meets industry standards.
7.What is the process for return or replacement of T15B47AHM3/I?
All T15B47AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with T15B47AHM3/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 T15B47AHM3/I part is unused and in its original packaging.
Return procedure for T15B47AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T15B47AHM3/I Tags
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