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Vishay General Semiconductor - Diodes Division SM15T150CAHM3/H
- Part No.:
- SM15T150CAHM3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150CAHM3/H.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,819
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Product details
Overview
SM15T150CAHM3/H from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 1500 W peak pulse power (10/1000 μs), 150 V standoff voltage (VWM), 171 V breakdown voltage (VBR min), and 265 V clamping voltage (VC) at 38 A IPPM. It protects automotive-grade signal lines and power rails against lightning-induced surges and inductive switching transients.
For engineers reviewing the SM15T150CAHM3/H datasheet, SM15T150CAHM3/H pinout, SM15T150CAHM3/H application, or SM15T150CAHM3/H equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, halogen-free RoHS compliance, and verified 1500 W surge handling on standard PCB copper pads.
Technical Context
The SM15T150CAHM3/H employs a glass-passivated silicon junction optimized for low-inductance transient suppression in bidirectional configurations. Its clamping behavior is characterized under standardized 10/1000 μs and 8/20 μs waveforms, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W.
Designed for high-reliability automotive applications, it features MSL Level 1 moisture sensitivity, LF peak reflow of 260 °C, and failure mode of short-circuit under overstress - enabling predictable system-level fault containment without open-circuit risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC working range. |
| VBR (min) | 171 V - minimum breakdown voltage at 1 mA test current; ensures reliable turn-on above normal operating voltage. |
| VC @ IPPM | 265 V at 38 A - clamping voltage during 10/1000 μs surge; determines maximum stress imposed on protected IC or MOSFET. |
| PPPM | 1500 W - peak pulse power rating; validates robustness against lightning and inductive switching threats per IEC 61000-4-5. |
| TJ max. | +150 °C - maximum junction temperature; supports operation in under-hood automotive environments. |
| Package | SMC (DO-214AB) - surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with automated placement. |
Pinout & Package
SMC (DO-214AB) package with two terminals: symmetrical bidirectional configuration - no polarity marking; both terminals function identically as anode/cathode depending on transient polarity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Bidirectional transient path | Acts as cathode during positive transients and anode during negative transients; enables symmetric clamping. |
| Terminal 2 | Bidirectional transient path | Electrically identical to Terminal 1; no functional distinction - device operates identically regardless of orientation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, HTRB, and UHAST - supports Tier-1 supply chain compliance. |
| Halogen-free & RoHS-compliant | Meets JEDEC J-STD-020 MSL Level 1 and JESD201 Class 2 whisker resistance; suitable for lead-free reflow assembly. |
| 1500 W peak pulse power | Withstands 10/1000 μs surges up to 38 A without degradation - exceeds IEC 61000-4-5 Level 4 immunity requirements. |
| Low clamping ratio (VC/VBR ≈ 1.55) | Minimizes overvoltage stress on downstream components; critical for protecting 150 V-rated MOSFETs and gate drivers. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs and body control modules from load-dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed across power input prior to DC/DC converter input stage. Use Value: Limits transient voltage to ≤265 V, preventing damage to 36 V-rated input capacitors and PMICs while maintaining AEC-Q101 compliance. |
Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) connected to CAN or LIN buses from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector interface, before signal conditioning amplifier. Use Value: Clamps ±15 kV contact ESD (IEC 61000-4-2) without distorting millivolt-level sensor signals due to symmetrical bidirectional response. |
| Telecom Line Interface Protection | Motor Drive Gate Driver Protection |
Use Scenario: Safeguarding Ethernet PHY or RS-485 transceivers connected to outdoor cabling exposed to induced lightning surges. IC Role / Device Role / Timing Role: Primary surge protection device mounted at board edge, upstream of common-mode choke and data line TVS array. Use Value: Absorbs 1500 W surge energy (10/1000 μs) without latch-up, preserving signal integrity and meeting GR-1089-CORE telecom immunity standards. |
Use Scenario: Protecting high-side/low-side gate drivers in BLDC motor inverters from shoot-through-induced voltage spikes during PWM switching. IC Role / Device Role / Timing Role: Fast-response TVS across gate-source terminals of SiC MOSFET drivers to suppress dv/dt-induced ringing. Use Value: Sub-1 ns response time and 265 V clamping prevent false turn-on of power devices, reducing risk of destructive shoot-through current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA | Same VWM (150 V) and bidirectional structure, but lower PPPM (400 W) and higher VC (243 V at 12.3 A). | Rated for consumer/industrial use only; not AEC-Q101 qualified or halogen-free. | Select when cost-sensitive non-automotive designs require basic 150 V clamping without automotive qualification or high-energy surge margin. |
| SMCJ150CA | Identical VWM (150 V), AEC-Q101 qualified, but larger SMC package variant with higher PPPM (1500 W) and same VC (265 V at 38 A); differs only in packaging code suffix. | No functional difference - same electrical specs and automotive qualification; HM3/H suffix denotes halogen-free RoHS version. | Choose SMCJ150CA if legacy design uses SMCJ-series part numbering; SM15T150CAHM3/H offers identical performance with updated Vishay branding and traceability. |
Compared with SMAJ150CA and SMCJ150CA, the SM15T150CAHM3/H delivers equal 1500 W surge capability and AEC-Q101 qualification in a halogen-free, MSL Level 1–compliant package - making it the preferred choice for new automotive designs requiring full regulatory alignment and long-term component continuity.
Availability
SM15T150CAHM3/H is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, and telecom line protection systems requiring stable component supply, AEC-Q101 compliance, and halogen-free manufacturing.
Supply support for SM15T150CAHM3/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 SM15T Series is designed specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where AEC-Q101 compliance, 1500 W surge handling, and bidirectional clamping are mandatory.
FAQ
What is the clamping voltage of SM15T150CAHM3/H at its rated peak pulse current?
The SM15T150CAHM3/H has a maximum clamping voltage (VC) of 265 V at 38 A peak pulse current (IPPM), measured using the standardized 10/1000 μs waveform. This value is specified in the Vishay datasheet Document Number 88380, page 2, and defines the upper voltage limit imposed on protected circuitry during surge events. The SM15T150CAHM3/H maintains this clamping performance across its full operating temperature range.
Is SM15T150CAHM3/H qualified for automotive applications?
Yes, SM15T150CAHM3/H is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in the SM15T Series datasheet (Rev. 09-Jan-2024). It undergoes rigorous stress testing including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing - making it suitable for under-hood and chassis-mounted automotive electronics.
What does the "CA" suffix in SM15T150CAHM3/H indicate?
The "CA" suffix in SM15T150CAHM3/H denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SM15T150AHM3/H), the CA version has no polarity marking and functions identically regardless of terminal orientation, simplifying layout and eliminating installation errors.
What is the thermal resistance of SM15T150CAHM3/H from junction to ambient?
The SM15T150CAHM3/H has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, as specified in the Vishay datasheet. This value assumes standard PCB layout conditions and is critical for calculating steady-state junction temperature rise under continuous power dissipation (PD = 6.5 W).
Does SM15T150CAHM3/H meet RoHS and halogen-free requirements?
Yes, SM15T150CAHM3/H carries the "HM3" suffix, indicating it is halogen-free, RoHS-compliant, and meets JEDEC J-STD-020 MSL Level 1 standards. Vishay confirms this in the Mechanical Data section of Document Number 88380, specifying matte tin-plated leads and compliance with JESD201 Class 2 whisker resistance - fulfilling strict environmental and assembly requirements for modern electronics.
SM15T150CAHM3/H 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:
- -
- Bidirectional Channels:
- 1
- 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)
SM15T150CAHM3/H FAQ
1.How can I place an order for SM15T150CAHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150CAHM3/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 SM15T150CAHM3/H reliable?
The price and inventory of SM15T150CAHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T150CAHM3/H is usually 5 days.
3.What payment methods are accepted for SM15T150CAHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150CAHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150CAHM3/H?
SM15T150CAHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150CAHM3/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 SM15T150CAHM3/H?
For technical support, including SM15T150CAHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150CAHM3/H requirements.
6.How does Aetrix verify that SM15T150CAHM3/H is sourced from the original manufacturer or authorized distributors?
All SM15T150CAHM3/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 SM15T150CAHM3/H meets industry standards.
7.What is the process for return or replacement of SM15T150CAHM3/H?
All SM15T150CAHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150CAHM3/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 SM15T150CAHM3/H part is unused and in its original packaging.
Return procedure for SM15T150CAHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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