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Vishay General Semiconductor - Diodes Division SM15T150AHM3/I
- Part No.:
- SM15T150AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150AHM3/I.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,430
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Product details
Overview
SM15T150AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 150 V standoff voltage (VWM), 143 V clamping voltage at 7.2 A IPPM, and 150 °C max junction temperature. It protects MOSFETs and signal lines in automotive power electronics against lightning-induced and inductive switching transients.
For engineers reviewing the SM15T150AHM3/I datasheet, SM15T150AHM3/I pinout, SM15T150AHM3/I application, or SM15T150AHM3/I equivalent, key selection criteria include unidirectional polarity, 150 V VWM, 207 V breakdown voltage range, low clamping ratio (VC/VBR ≈ 1.45), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 μA leakage at 150 V), but triggers avalanche conduction when reverse voltage exceeds 143–158 V (VBR), limiting transient energy to ≤207 V at 7.2 A peak pulse current. Its glass-passivated junction ensures stable breakdown and low inductance for fast response.
The device is designed for PCB-level surge protection on DC power rails and I/O lines with high source impedance-typical in automotive body control modules and industrial motor drives-where failure mode is short-circuit, enabling fail-safe system behavior without open-circuit risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 12 V/24 V/48 V systems. |
| VBR (Breakdown Voltage) | 143–158 V at 1 mA - Avalanche onset range; ensures predictable triggering above nominal system voltage with tight tolerance. |
| VC (Clamping Voltage) | 207 V at 7.2 A (10/1000 μs) - Peak voltage seen by protected IC during worst-case surge; enables robust design margin for 150 V-rated components. |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capacity for standardized lightning surge waveforms; qualifies for IEC 61000-4-5 Level 3/4 compliance testing. |
| TJ max | 150 °C - Maximum junction temperature; supports operation in under-hood automotive environments and sealed industrial enclosures. |
| RθJA | 75 °C/W - Thermal resistance junction-to-ambient; requires ≥8 mm × 8 mm copper pads per terminal for full 1500 W rating. |
| AEC-Q101 Qualified | Yes - Validated for automotive applications including engine control units and ADAS power supplies per stress test requirements. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, MSL Level 1 (260 °C reflow peak). Cathode marked with band; anode unmarked.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when voltage exceeds VBR. |
| Anode | Reference node | Typically tied to system ground or low-impedance return path; completes clamping loop during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power (10/1000 μs) | Enables protection against severe lightning-induced surges per IEC 61000-4-5 without derating in standard PCB layouts. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot across protected devices, reducing stress on downstream MOSFETs and gate drivers. |
| Glass passivated chip junction | Ensures long-term stability of breakdown voltage and leakage current over temperature and lifetime cycling. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive use including thermal cycling, humidity bias, and mechanical shock per JESD22 standards. |
| Low inductance package | Reduces voltage overshoot during fast-rising transients (e.g., ESD or relay bounce), improving real-world clamping fidelity. |
Applications
| Automotive Body Control Module (BCM) | Industrial Motor Drive Power Supply |
|---|---|
Use Scenario: Protects 12 V supply rail feeding microcontroller and CAN transceivers from load-dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between VBAT and GND, triggered within nanoseconds of overvoltage event. Use Value: Clamps transients to ≤207 V, preventing latch-up or permanent damage to 150 V-rated power management ICs. |
Use Scenario: Shields 48 V DC bus input stage from inductive kickback generated by contactor switching and brake coil de-energization. IC Role / Device Role / Timing Role: Primary overvoltage clamp on main DC input, coordinated with upstream fusing and downstream DC-DC converters. Use Value: Absorbs 1500 W pulses without degradation, maintaining system uptime in factory automation equipment. |
| Telecom Remote Radio Unit (RRU) | Consumer Smart Home Gateway Power Input |
Use Scenario: Safeguards PoE+ (IEEE 802.3at) powered Ethernet interface against induced surges from outdoor cabling runs. IC Role / Device Role / Timing Role: First-line transient suppressor on DC input before DC-DC regulation and Ethernet PHY isolation. Use Value: Withstands repeated 10/1000 μs surges up to 7.2 A while maintaining <1 μA leakage at 150 V standby. |
Use Scenario: Secures AC-DC adapter output feeding Wi-Fi SoC and USB peripherals against mains-borne transients and ESD coupling. IC Role / Device Role / Timing Role: Final-stage DC rail protector on 5 V/12 V outputs, placed adjacent to connector entry point. Use Value: Halogen-free, RoHS-compliant construction meets regional environmental regulations for consumer CE marking. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A-E3/57T | Same SMC package, 1500 W rating, but VWM = 150 V, VC = 243 V at 6.2 A; not AEC-Q101 qualified. | Lacks automotive qualification; suitable for commercial/industrial use only. | Select when AEC-Q101 is not required and higher clamping voltage is acceptable. |
| 1.5SMC150AHE3_A/I | Identical electrical specs and AEC-Q101 qualification; differs only in tape-and-reel packaging code (I vs HM3/I). | No functional difference; same thermal, electrical, and reliability performance. | Choose based on preferred logistics format-both are drop-in replacements in design and assembly. |
Compared with SMAJ150A-E3/57T, SM15T150AHM3/I offers lower clamping (207 V vs 243 V) and automotive qualification; versus 1.5SMC150AHE3_A/I, it shares identical performance but uses Vishay's HM3 halogen-free designation aligned with latest material compliance requirements.
Availability
SM15T150AHM3/I is available at Aetrix Electronics and suitable for automotive electronics, industrial motor drives, and telecom infrastructure requiring stable component supply with guaranteed AEC-Q101 compliance and halogen-free construction.
Supply support for SM15T150AHM3/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, and protection devices with emphasis on reliability, power handling, and automotive-grade validation.
The SM15T Series was developed specifically for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where 1500 W surge immunity and AEC-Q101 qualification are mandatory.
FAQ
What is the clamping voltage of SM15T150AHM3/I at its rated peak pulse current?
The SM15T150AHM3/I has a maximum clamping voltage (VC) of 207 V when subjected to a 10/1000 μs waveform at 7.2 A peak pulse current (IPPM). This value is measured under standardized test conditions with 8.0 mm × 8.0 mm copper pads per terminal and reflects the actual voltage imposed on protected circuitry during surge events.
Is SM15T150AHM3/I suitable for automotive applications?
Yes, SM15T150AHM3/I is AEC-Q101 qualified and carries the HM3 suffix indicating halogen-free, RoHS-compliant, and automotive-grade construction. It is validated for use in engine control units, body control modules, and ADAS power supplies where reliability under thermal cycling and mechanical stress is critical.
What does the "HM3" suffix mean in SM15T150AHM3/I?
The "HM3" suffix in SM15T150AHM3/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes this variant from commercial-grade versions (e.g., "E3" or "M3") and confirms compliance with automotive material and reliability standards per JESD22 and AEC test plans.
How does SM15T150AHM3/I differ from SM15T150AHE3_A/I?
SM15T150AHM3/I and SM15T150AHE3_A/I share identical electrical specifications, thermal performance, and AEC-Q101 qualification. The difference lies solely in packaging nomenclature: HM3 indicates halogen-free material compliance, while HE3 denotes standard RoHS compliance without halogen restriction-both are functionally interchangeable.
What is the thermal resistance of SM15T150AHM3/I, and how does it affect layout?
SM15T150AHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W. To achieve full 1500 W pulse rating, the PCB must provide minimum 8.0 mm × 8.0 mm copper pad area per terminal. Reduced pad size increases junction temperature and requires derating per Figure 2 in the datasheet.
SM15T150AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- SM15T, TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 128V
- Voltage - Breakdown (Min):
- 143V
- Voltage - Clamping (Max) @ Ipp:
- 207V
- Current - Peak Pulse (10/1000µs):
- 7.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SM15T150AHM3/I FAQ
1.How can I place an order for SM15T150AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150AHM3/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 SM15T150AHM3/I reliable?
The price and inventory of SM15T150AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T150AHM3/I is usually 5 days.
3.What payment methods are accepted for SM15T150AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150AHM3/I?
SM15T150AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150AHM3/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 SM15T150AHM3/I?
For technical support, including SM15T150AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150AHM3/I requirements.
6.How does Aetrix verify that SM15T150AHM3/I is sourced from the original manufacturer or authorized distributors?
All SM15T150AHM3/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 SM15T150AHM3/I meets industry standards.
7.What is the process for return or replacement of SM15T150AHM3/I?
All SM15T150AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150AHM3/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 SM15T150AHM3/I part is unused and in its original packaging.
Return procedure for SM15T150AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T150AHM3/I Tags
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