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Vishay General Semiconductor - Diodes Division T15B39AHM3/I
- Part No.:
- T15B39AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
T15B39AHM3/I.pdf
- Description:
- 1500 W UNI-DIRECTIONAL TVS IN SM
- Quantity:
- Payment:
- Shipping:
Inventory:3,155
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Product details
Overview
T15B39AHM3/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 features a 39 V nominal breakdown voltage (VBR), 1500 W peak pulse power (10/1000 μs), 53.9 V maximum clamping voltage at 28.8 A peak surge current, and operates up to +185 °C junction temperature in SMB (DO-214AA) package.
For engineers reviewing the T15B39AHM3/I datasheet, T15B39AHM3/I pinout, T15B39AHM3/I application, or T15B39AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, MSL Level 1 moisture sensitivity, 30 kV IEC 61000-4-2 ESD immunity, and suitability for protecting MOSFETs, sensor signal lines, and ICs against inductive switching transients and lightning-induced surges in automotive environments.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-temperature stability and low leakage. Its unidirectional configuration provides robust clamping during positive-going transients while maintaining tight VBR tolerance (±5% at 1.0 mA test current) and low temperature coefficient (0.091 %/°C).
The device delivers consistent performance under harsh conditions: it sustains 100% rated pulse power at TA = 25 °C and derates linearly above that temperature per Figure 2, with full functionality maintained across -65 °C to +185 °C operating and storage range. Its matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance Class 2 requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 37.1 / 39.0 / 41.0 V - ensures reliable triggering above system stand-off voltage without false trips |
| VWM | 33.3 V - maximum continuous reverse working voltage compatible with 3.3 V–24 V automotive supply rails |
| VC @ IPPM | 53.9 V - clamps 10/1000 μs surge to safe level for downstream 5 V or 3.3 V logic interfaces |
| PPPM | 1500 W - handles high-energy transients from inductive load switching in engine control modules |
| IPPM | 28.8 A - peak surge current capacity validated per IEC 61000-4-5 waveform compliance |
| TJ max | +185 °C - enables placement near heat sources (e.g., powertrain ECUs) without derating loss |
| ESD Rating | ±30 kV contact/air - exceeds ISO 10605 requirements for automotive module-level ESD immunity |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, AEC-Q101 qualified. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge energy to ground when VBR exceeded |
| Anode | Reference node | Typically tied to system ground or low-impedance return path for clamping loop integrity |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Enables stable leakage performance (<2.0 μA at VWM) after 1000 hrs at 150 °C |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak without preconditioning |
| AEC-Q101 qualification | Validated for automotive use via stress tests including HTGB, HTRB, and temperature cycling |
| Fast response time | Sub-nanosecond turn-on ensures clamping before sensitive ICs experience overvoltage damage |
| UL 94 V-0 molding compound | Prevents flame propagation in under-hood applications where fire safety is critical |
Applications
| Automotive Engine Control Unit (ECU) | Automotive Sensor Signal Protection |
|---|---|
Use Scenario: Protects microcontroller I/O pins and CAN transceiver inputs from load-dump and alternator ripple transients in 12 V powertrain systems. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp positive surges only. Use Value: Maintains signal integrity during cranking events while avoiding interference with bidirectional communication protocols. | Use Scenario: Shields analog outputs of pressure, temperature, and position sensors from ESD and switching noise on harnesses. IC Role / Device Role / Timing Role: Standoff voltage (33.3 V) exceeds sensor supply rails (5 V or 3.3 V), enabling clean DC coupling. Use Value: Prevents sensor offset drift or latch-up caused by 30 kV ESD discharges per IEC 61000-4-2. |
| Industrial Motor Drive Interface | On-Board Charger (OBC) Input Protection |
Use Scenario: Safeguards gate drivers and feedback circuits in BLDC inverters from inductive kickback during PWM switching. IC Role / Device Role / Timing Role: Clamps voltage spikes at MOSFET source/drain nodes before they propagate to control logic. Use Value: Enables reliable operation at 185 °C ambient in sealed motor enclosures without thermal derating. | Use Scenario: Guards AC-DC converter front-end inputs against lightning-induced surges in EV charging stations. IC Role / Device Role / Timing Role: First-stage protection ahead of MOVs and filter capacitors to absorb fast-rising transients. Use Value: 1500 W pulse rating handles 10/1000 μs surges per IEC 61000-4-5 Level 4 without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ36A-HF | 36 V VBR, 600 W PPPM, same SMB package but lower power rating | Lower clamping energy handling limits use to sub-24 V systems with milder transients | Select when cost sensitivity outweighs need for 1500 W surge margin |
| SMCJ36A-QH | 36 V VBR, 1500 W PPPM, SMC (DO-214AB) package - larger footprint, higher thermal mass | Requires PCB redesign due to 7.11 mm × 6.22 mm body vs. SMB's 4.57 mm × 3.94 mm | Choose for higher reliability in extended-life industrial deployments where board space permits |
Compared with SMBJ36A-HF and SMCJ36A-QH, the T15B39AHM3/I offers optimal balance of high-temperature capability (+185 °C), automotive qualification, and compact SMB packaging-making it preferred for space-constrained, thermally aggressive automotive modules where precise 39 V clamping is required.
Availability
T15B39AHM3/I is available at Aetrix Electronics and suitable for automotive engine control units, battery management systems, ADAS sensor interfaces, and industrial motor drives requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for T15B39AHM3/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, high-temperature operation, and automotive qualification.
The T15B39AHM3/I belongs to Vishay's PAR® family of surface-mount TVS diodes, engineered specifically for high-reliability automotive and industrial applications demanding AEC-Q101 compliance, extreme temperature resilience, and robust transient immunity.
FAQ
What is the maximum clamping voltage of the T15B39AHM3/I at its rated peak pulse current?
The T15B39AHM3/I has a maximum clamping voltage (VC) of 53.9 V at its rated peak pulse current (IPPM) of 28.8 A using a 10/1000 μs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and ensures predictable overvoltage limiting for downstream components such as microcontrollers or interface ICs. The T15B39AHM3/I maintains this clamping performance across its full operating temperature range.
Is the T15B39AHM3/I qualified for automotive applications?
Yes, the T15B39AHM3/I is AEC-Q101 qualified and manufactured with halogen-free, RoHS-compliant materials meeting JESD 201 Class 2 whisker resistance. It supports automotive use cases including engine control, ADAS sensors, and infotainment systems. The T15B39AHM3/I also meets MSL Level 1 per J-STD-020 and withstands 30 kV ESD per IEC 61000-4-2, confirming its suitability for under-hood and cabin modules.
What does the "HM3" suffix indicate in T15B39AHM3/I?
The "HM3" suffix in T15B39AHM3/I denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101 qualified construction with matte tin-plated leads. The "I" denotes packaging in 13-inch diameter plastic tape and reel with 3200 units per reel. The HM3 variant satisfies stringent automotive material requirements and ensures compatibility with lead-free reflow processes up to 260 °C peak temperature.
How does the T15B39AHM3/I compare to the T15B36A variant?
The T15B39AHM3/I has a higher nominal breakdown voltage (39.0 V vs. 36.0 V) and stand-off voltage (33.3 V vs. 30.8 V) than the T15B36A, making it better suited for 36 V nominal systems or applications requiring tighter margin above 33 V rails. Both share identical 1500 W PPPM, SMB package, and AEC-Q101 qualification. The T15B39AHM3/I's VBR temperature coefficient is 0.091 %/°C, slightly higher than T15B36A's 0.090 %/°C.
Can the T15B39AHM3/I be used in bidirectional configurations?
No, the T15B39AHM3/I is a unidirectional TVS diode and must not be used for bidirectional surge suppression. Its design clamps only positive-going transients relative to the cathode. For bidirectional protection, two T15B39AHM3/I devices may be connected in series opposing configuration, but Vishay does not specify or characterize that arrangement. The T15B39AHM3/I data sheet explicitly defines polarity as unidirectional with cathode band marking.
T15B39AHM3/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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 28.8A
- 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)
T15B39AHM3/I FAQ
1.How can I place an order for T15B39AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for T15B39AHM3/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 T15B39AHM3/I reliable?
The price and inventory of T15B39AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T15B39AHM3/I is usually 5 days.
3.What payment methods are accepted for T15B39AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T15B39AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T15B39AHM3/I?
T15B39AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T15B39AHM3/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 T15B39AHM3/I?
For technical support, including T15B39AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T15B39AHM3/I requirements.
6.How does Aetrix verify that T15B39AHM3/I is sourced from the original manufacturer or authorized distributors?
All T15B39AHM3/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 T15B39AHM3/I meets industry standards.
7.What is the process for return or replacement of T15B39AHM3/I?
All T15B39AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with T15B39AHM3/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 T15B39AHM3/I part is unused and in its original packaging.
Return procedure for T15B39AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T15B39AHM3/I Tags
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