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Vishay T15B43AHM3/H
- Part No.:
- T15B43AHM3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
T15B43AHM3/H.pdf
- Description:
- 1.5KW,43V 5%,SMB PAR
- Quantity:
- Payment:
- Shipping:
Inventory:4,427
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Product details
Overview
T15B43AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for robust overvoltage protection in automotive and industrial electronics. It delivers 1500 W peak pulse power (10/1000 μs), clamps at 59.3 V under 26.1 A surge current, and operates with 40.9–45.2 V breakdown voltage at 1 mA test current. Its SMB (DO-214AA) package supports AEC-Q101 qualification and 185 °C junction temperature capability.
For engineers reviewing the T15B43AHM3/H datasheet, T15B43AHM3/H pinout, T15B43AHM3/H application, or T15B43AHM3/H equivalent, key selection criteria include its 36.8 V stand-off voltage, <1.0 μA reverse leakage at VWM, MSL Level 1 moisture sensitivity, and halogen-free, RoHS-compliant HM3 suffix construction.
Technical Context
The T15B43AHM3/H employs passivated anisotropic rectifier technology to achieve stable clamping performance across temperature extremes. Its unidirectional architecture enables precise reverse-biased transient suppression on DC power rails and signal lines without forward conduction interference.
Designed for high-reliability automotive environments, it meets IEC 61000-4-2 ESD immunity (±30 kV contact/air discharge) and derates linearly above 25 °C ambient per JESD22-A104 thermal profiles. The device's 0.092 %/°C VBR temperature coefficient ensures predictable voltage threshold shift over its -65 °C to +185 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 40.9 / 43.0 / 45.2 V at 1 mA - defines minimum voltage at which TVS enters avalanche conduction during transients |
| VWM | 36.8 V - maximum continuous working voltage before leakage exceeds 1.0 μA; sets safe DC rail margin |
| VC @ IPPM | 59.3 V at 26.1 A - clamping voltage during 10/1000 μs surge; determines protected circuit's peak stress level |
| PPPM | 1500 W - peak pulse power handling capacity; validates suitability for ISO 7637-2 Pulse 1/2a/5a automotive transients |
| TJ max | +185 °C - enables operation in under-hood automotive modules without thermal derating penalties |
| ESD Rating | ±30 kV (IEC 61000-4-2) - provides system-level ESD robustness without external shielding or filtering |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode indicated by molded band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H). Matte tin-plated leads, MSL Level 1, LF peak 260 °C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal avalanche diode structure | Connected to protected line (e.g., 12 V rail); absorbs positive transients when referenced to ground |
| Anode | Cathode of internal avalanche diode structure | Connected to system ground; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including HTOL, TC, and UHAST testing per JEDEC standards |
| Junction passivation | Reduces surface leakage and improves long-term stability under high humidity and temperature cycling |
| 10/1000 μs waveform rating | Matches real-world load-dump and inductive-switching surge profiles in 12 V vehicle systems |
| HM3 suffix compliance | Halogen-free, RoHS-compliant, and JESD201 Class 2 whisker-resistant plating for lead-free reflow assembly |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Suppressing load-dump transients (ISO 7637-2 Pulse 5a) on 12 V battery-fed ECUs in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and input filter capacitor to clamp surges before LDO or MCU power pins. Use Value: Limits peak voltage to ≤59.3 V during 26.1 A transients, preventing damage to downstream 40 V-rated regulators and microcontrollers. | Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loop) of pressure sensors exposed to ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS connected across signal and ground near sensor connector to shunt fast transients before op-amp input stage. Use Value: Clamps ±30 kV ESD strikes within nanoseconds while maintaining <1.0 μA leakage at 36.8 V, preserving signal integrity and offset accuracy. |
| Motor Drive Gate Driver Protection | On-Board Charger (OBC) DC Link Monitoring |
Use Scenario: Safeguarding high-side gate driver IC inputs against Miller-induced voltage spikes during MOSFET switching in BLDC inverters. IC Role / Device Role / Timing Role: TVS placed between gate driver enable pin and ground to absorb sub-100 ns ringing and coupling noise. Use Value: Responds in <1.0 ns to limit transient amplitude below 59.3 V, preventing false triggering or latch-up in CMOS logic inputs. | Use Scenario: Shielding isolated voltage sense inputs on OBC DC link monitoring circuits from common-mode surges during AC/DC conversion. IC Role / Device Role / Timing Role: TVS mounted at isolation barrier input side to clamp differential transients before precision resistive divider network. Use Value: Maintains 36.8 V stand-off with <1.0 μA leakage at 150 °C, ensuring minimal error contribution to 1% accurate voltage measurement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ43A | Same SMB package, 43 V nominal VBR, but rated for 600 W PPPM (10/1000 μs) and not AEC-Q101 qualified | Limited to commercial/industrial use; lacks automotive thermal and reliability validation | Select when cost sensitivity outweighs automotive qualification requirements and surge energy is ≤600 W |
| 1.5SMC43A | Same 43 V VBR range, but SMC (DO-214AB) package (larger footprint), 1500 W rating, no AEC-Q101 status | Requires PCB layout change; suitable for non-automotive high-energy surge zones like power supplies | Choose when higher surge margin is needed and board space allows larger SMC footprint |
Compared with SMBJ43A and 1.5SMC43A, the T15B43AHM3/H uniquely combines AEC-Q101 qualification, 1500 W capability, and SMB footprint-enabling drop-in replacement in automotive designs where thermal robustness, ESD immunity, and space constraints are simultaneously critical.
Availability
T15B43AHM3/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and motor drive protection requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for T15B43AHM3/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 and application-specific performance.
The T15B43AHM3/H belongs to Vishay's PAR® (Protected Avalanche Rectifier) TVS family, engineered specifically for high-temperature, high-reliability automotive and industrial transient suppression where consistent clamping and long-term stability are mandatory.
FAQ
What is the maximum clamping voltage of the T15B43AHM3/H under peak surge conditions?
The T15B43AHM3/H has a maximum clamping voltage (VC) of 59.3 V when subjected to its rated peak pulse current of 26.1 A using the standard 10/1000 μs waveform. This value is measured per Figure 3 in the Vishay datasheet 98360 and represents the upper voltage limit imposed on protected circuitry during worst-case transient events. Designers must ensure downstream components tolerate this clamping level.
Is the T15B43AHM3/H suitable for automotive applications requiring AEC-Q101 qualification?
Yes, the T15B43AHM3/H is explicitly AEC-Q101 qualified as stated in the Vishay datasheet 98360, footnote (1) under Electrical Characteristics and in the Features section. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing-making the T15B43AHM3/H appropriate for under-hood and safety-critical automotive modules.
What does the "HM3" suffix indicate in T15B43AHM3/H?
Per Vishay documentation, the "HM3" suffix in T15B43AHM3/H denotes halogen-free, RoHS-compliant construction with matte tin-plated leads that meet JESD201 Class 2 whisker resistance requirements. It also confirms compliance with J-STD-020 MSL Level 1 and supports lead-free reflow soldering up to 260 °C peak temperature.
How does the T15B43AHM3/H perform at elevated junction temperatures?
The T15B43AHM3/H maintains full functionality up to +185 °C junction temperature, with VBR shifting predictably at +0.092 %/°C. Its power derating curve (Figure 2 in datasheet 98360) shows linear reduction from 100 % at 25 °C to ~60 % at 125 °C ambient, enabling reliable operation in high-temperature automotive environments without design compromise.
Can the T15B43AHM3/H replace older SMB-format TVS diodes like P6SMB43A in existing layouts?
Yes-the T15B43AHM3/H uses the identical SMB (DO-214AA) package with matching mechanical dimensions and terminal layout, allowing direct PCB footprint reuse. However, designers should verify that the higher 1500 W rating and tighter VBR tolerance (40.9–45.2 V vs. wider spreads in legacy parts) align with system protection margins and do not induce unintended interaction with upstream fusing or downstream regulators.
T15B43AHM3/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):
- 36.8V
- Voltage - Breakdown (Min):
- 40.9V
- Voltage - Clamping (Max) @ Ipp:
- 59.3V
- Current - Peak Pulse (10/1000µs):
- 26.1A
- 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)
T15B43AHM3/H FAQ
1.How can I place an order for T15B43AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T15B43AHM3/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 T15B43AHM3/H reliable?
The price and inventory of T15B43AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T15B43AHM3/H is usually 5 days.
3.What payment methods are accepted for T15B43AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T15B43AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T15B43AHM3/H?
T15B43AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T15B43AHM3/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 T15B43AHM3/H?
For technical support, including T15B43AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T15B43AHM3/H requirements.
6.How does Aetrix verify that T15B43AHM3/H is sourced from the original manufacturer or authorized distributors?
All T15B43AHM3/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 T15B43AHM3/H meets industry standards.
7.What is the process for return or replacement of T15B43AHM3/H?
All T15B43AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T15B43AHM3/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 T15B43AHM3/H part is unused and in its original packaging.
Return procedure for T15B43AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T15B43AHM3/H Tags
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