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Vishay General Semiconductor - Diodes Division SM15T150CAHM3/I
- Part No.:
- SM15T150CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150CAHM3/I.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,805
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Product details
Overview
SM15T150CAHM3/I from Vishay General Semiconductor is a bidirectional 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), 207 V clamping voltage (VC) at 7.2 A IPPM, and AEC-Q101 qualified for automotive applications. It protects signal lines and power rails in sensor units and motor control circuits against lightning-induced and switching transients.
For engineers reviewing the SM15T150CAHM3/I datasheet, SM15T150CAHM3/I pinout, SM15T150CAHM3/I application, or SM15T150CAHM3/I equivalent, key selection criteria include bidirectional clamping capability, 150 V VWM tolerance, 207 V VC under 7.2 A surge, AEC-Q101 qualification status, and SMC package thermal resistance (RθJA = 75 °C/W).
Technical Context
The SM15T150CAHM3/I operates as a bidirectional avalanche diode with symmetrical breakdown characteristics in both polarities, enabling protection of AC-coupled or floating signal paths without polarity concerns. Its glass-passivated junction ensures stable leakage performance and low inductance for fast transient response.
Designed for high-energy threat suppression, it sustains 1500 W peak pulse power per 10/1000 μs waveform while maintaining clamping voltage ≤207 V at rated IPPM. Thermal design relies on 0.31" × 0.31" copper pads to achieve specified RθJA = 75 °C/W and support continuous 6.5 W power dissipation at TA = 50 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 12–48 V system rails. |
| VBR (min/max) | 143 V / 158 V - Breakdown occurs within this range at 1 mA test current; ensures predictable turn-on threshold across temperature and lot variation. |
| VC @ IPPM | 207 V at 7.2 A - Clamping voltage during 10/1000 μs surge; limits downstream voltage stress to <207 V under worst-case transient. |
| PPPM | 1500 W - Peak pulse power handling capacity; supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly laid out. |
| RθJA | 75 °C/W - Junction-to-ambient thermal resistance on standard 8 mm × 8 mm copper pads; enables thermal budget calculation for sustained operation. |
| TJ max. | +150 °C - Maximum junction temperature rating; allows operation in under-hood automotive environments with proper PCB heatsinking. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive electronics; supports use in ADAS sensors, body control modules, and infotainment power supplies. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant, MSL level 1 (260 °C peak reflow). Cathode band omitted per bidirectional construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient current entry point (positive polarity) | Accepts surge current during positive half-cycle; symmetrically identical to cathode in bidirectional operation. |
| Cathode | Transient current entry point (negative polarity) | Accepts surge current during negative half-cycle; electrically interchangeable with anode due to bidirectional symmetry. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC signals, differential buses (e.g., CAN, RS-485), and floating grounds without polarity constraints. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 4 kV surge tests on 2 Ω source impedance when mounted per recommended pad layout. |
| Glass-passivated junction | Ensures stable reverse leakage (<1 μA at VWM) over lifetime and temperature, critical for low-power sensor interfaces. |
| AEC-Q101 qualification (HM3 suffix) | Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing; supports PPAP documentation. |
| Low inductance SMC package | Minimizes voltage overshoot during fast transients (e.g., <100 ns rise time), improving clamping effectiveness vs. larger packages. |
Applications
| Automotive Sensor Protection | Industrial Motor Drive I/O |
|---|---|
Use Scenario: Protecting analog output lines of wheel speed or pressure sensors exposed to load-dump and inductive kickback in vehicle chassis. IC Role / Device Role / Timing Role: Bidirectional TVS clamp absorbing ±200 V transients on 5 V or 12 V sensor supply and signal lines. Use Value: Prevents latch-up or permanent damage to precision op-amps and ADC front-ends by limiting voltage to ≤207 V during 7.2 A surges. |
Use Scenario: Shielding PLC digital input terminals connected to 24 V DC solenoids and contactors subject to switching spikes. IC Role / Device Role / Timing Role: Fast-response transient suppressor placed at terminal block entry, shunting energy before reaching isolation barrier or microcontroller GPIO. Use Value: Maintains functional safety integrity by ensuring clamping action occurs within <1 ns, avoiding false triggering of optocouplers or level shifters. |
| Telecom Line Interface | Consumer Power Adapter ESD |
Use Scenario: Safeguarding Ethernet PHY interface pins (e.g., MDI-X) against lightning-induced surges entering via unshielded twisted-pair cabling. IC Role / Device Role / Timing Role: Secondary-level TVS deployed after gas discharge tube (GDT) primary protection, handling residual 10/1000 μs energy. Use Value: Delivers precise 207 V clamping to protect 3.3 V PHY transceivers without over-clamping that could disrupt signal integrity. |
Use Scenario: ESD and surge protection on USB-C VBUS and CC lines in portable chargers subjected to user-handling transients and adapter plug/unplug events. IC Role / Device Role / Timing Role: Bidirectional clamp bridging VBUS and ground, suppressing ±15 kV contact ESD (IEC 61000-4-2) and 1 kV line surge (IEC 61000-4-5). Use Value: Halogen-free HM3 construction meets consumer RoHS and REACH compliance; 1500 W rating exceeds USB PD 3.1 surge requirements. |
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 configuration, but lower PPPM (400 W) and higher VC (243 V at 4.9 A); SOD-123 package (smaller, lower thermal mass). | Limited to lower-energy threats (e.g., IEC 61000-4-2 only); unsuitable for IEC 61000-4-5 Level 3+ or automotive load-dump. | Select SMAJ150CA only for space-constrained consumer designs where 400 W surge capacity suffices and AEC-Q101 is not required. |
| 1.5KE150CA | Higher PPPM (1500 W) and same VWM, but through-hole DO-201 package; VC = 219 V at 6.9 A; no AEC-Q101 qualification. | Requires wave soldering or manual assembly; incompatible with automated SMT lines; lacks automotive reliability validation. | Choose 1.5KE150CA only for legacy industrial equipment where board real estate permits through-hole mounting and AEC-Q101 is unnecessary. |
Compared with SMAJ150CA and 1.5KE150CA, the SM15T150CAHM3/I uniquely combines 1500 W surge rating, SMC surface-mount compatibility, AEC-Q101 qualification, and 207 V clamping-making it the only option suitable for high-reliability automotive and industrial SMT production requiring validated surge immunity.
Availability
SM15T150CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O terminals, telecom line interfaces, and consumer USB-C power adapters requiring stable component supply and full traceability.
Supply support for SM15T150CAHM3/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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SM15T Series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom systems where robustness against lightning, ESD, and inductive switching is mission-critical.
FAQ
What does the "CA" suffix indicate in SM15T150CAHM3/I?
The "CA" suffix in SM15T150CAHM3/I denotes a bidirectional configuration, meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. This eliminates polarity concerns during PCB layout and enables protection of AC-coupled or floating signal paths-unlike unidirectional variants (e.g., SM15T150AHM3/I) that require correct cathode orientation.
Is SM15T150CAHM3/I suitable for automotive applications?
Yes, SM15T150CAHM3/I is AEC-Q101 qualified (indicated by the "HM3" suffix), having passed accelerated stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. It is approved for use in automotive subsystems such as body electronics, ADAS sensors, and infotainment power rails where reliability under thermal and electrical stress is mandatory.
What is the maximum clamping voltage of SM15T150CAHM3/I under surge conditions?
The maximum clamping voltage (VC) of SM15T150CAHM3/I is 207 V when subjected to a 10/1000 μs surge waveform at its rated peak pulse current (IPPM) of 7.2 A. This value is measured per Figure 1 in Vishay document 88380 and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
How does the SMC (DO-214AB) package of SM15T150CAHM3/I affect thermal performance?
The SMC package of SM15T150CAHM3/I delivers a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" copper pads per JEDEC standards. This enables reliable operation at 6.5 W continuous power dissipation up to TA = 50 °C and supports thermal management in compact automotive and industrial PCB layouts without additional heatsinking.
Does SM15T150CAHM3/I have halogen-free and RoHS-compliant construction?
Yes, SM15T150CAHM3/I uses halogen-free molding compound and matte tin-plated leads, meeting RoHS Directive 2011/65/EU and IEC 61249-2-21 requirements. The "HM3" suffix explicitly confirms halogen-free, RoHS-compliant, and AEC-Q101 qualified construction-ensuring compliance for automotive and green electronics programs.
SM15T150CAHM3/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:
- -
- 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/I FAQ
1.How can I place an order for SM15T150CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150CAHM3/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 SM15T150CAHM3/I reliable?
The price and inventory of SM15T150CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SM15T150CAHM3/I is usually 5 days.
3.What payment methods are accepted for SM15T150CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150CAHM3/I?
SM15T150CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150CAHM3/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 SM15T150CAHM3/I?
For technical support, including SM15T150CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150CAHM3/I requirements.
6.How does Aetrix verify that SM15T150CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SM15T150CAHM3/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 SM15T150CAHM3/I meets industry standards.
7.What is the process for return or replacement of SM15T150CAHM3/I?
All SM15T150CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150CAHM3/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 SM15T150CAHM3/I part is unused and in its original packaging.
Return procedure for SM15T150CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T150CAHM3/I Tags
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DESD3V3E1BL-7B
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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