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Vishay General Semiconductor - Diodes Division SM15T150CAHM3_A/I
- Part No.:
- SM15T150CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SM15T150CAHM3_A/I.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,795
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Product details
Overview
SM15T150CAHM3_A/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), 171 V breakdown voltage (VBR min), and 207 V clamping voltage (VC) at 7.2 A IPPM. It protects I/O lines and power rails in automotive and industrial systems against lightning-induced and switching transients.
For engineers reviewing the SM15T150CAHM3_A/I datasheet, SM15T150CAHM3_A/I pinout, SM15T150CAHM3_A/I application, or SM15T150CAHM3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, and verified 1500 W surge handling on standard SMC pad layout.
Technical Context
This device operates as a voltage-clamped transient protector with symmetrical reverse/forward conduction behavior due to its bidirectional construction. Its silicon avalanche junction delivers precise breakdown at 143–158 V (VBR), clamps to ≤207 V at 7.2 A (10/1000 μs), and maintains low leakage (<1 μA at 150 V) across -65 °C to +150 °C junction temperature range.
The SMC package enables automated placement and supports 260 °C lead-free reflow per J-STD-020 MSL Level 1. Thermal resistance is 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead), enabling reliable operation under repeated surge stress when mounted on 8.0 mm × 8.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR (min/max) | 143 V / 158 V - guaranteed avalanche breakdown range at 1 mA test current |
| VC @ IPPM | 207 V at 7.2 A - clamping voltage during 10/1000 μs surge, defining worst-case protected line voltage |
| PPPM | 1500 W - peak pulse power handling capacity, validated per IEC 61000-4-5 waveform |
| TJ max. | +150 °C - maximum junction temperature, supporting under-hood automotive use |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint |
| AEC-Q101 | Qualified - certified for automotive electronics per stress test requirements (HM3 suffix) |
Pinout & Package
SM15T150CAHM3_A/I uses the SMC (DO-214AB) package: a surface-mount, bidirectional, unmarked two-terminal device with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no functional distinction |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; symmetric conduction enables AC-line and data-line protection |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, and ungrounded power rails without polarity concerns |
| 1500 W peak pulse rating | Withstands IEC 61000-4-5 Level 4 (4 kV) surges on 2 Ω source impedance when properly laid out |
| AEC-Q101 qualified (HM3) | Validated for automotive applications including engine control units, body electronics, and ADAS sensor interfaces |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and supports lead-free reflow up to 260 °C peak |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V/24 V supply rails in vehicle ECUs against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between power rail and ground, responding within nanoseconds to overvoltage events. Use Value: Clamps transients to ≤207 V while sustaining 1500 W surge, preventing damage to microcontrollers and CAN transceivers. |
Use Scenario: Safeguarding analog outputs (4–20 mA) and digital I/O (RS-485, CAN FD) in factory automation sensors. IC Role / Device Role / Timing Role: Standoff-mode protector that remains non-conductive below 150 V and clamps reversals above threshold. Use Value: Maintains signal integrity with <1 μA leakage at 150 V and handles repetitive 10/1000 μs surges without degradation. |
| Telecom DC Power Feeds | Consumer Appliance Motor Control |
Use Scenario: Shielding PoE-powered equipment (e.g., IP cameras) from induced surges on 48 V DC input lines. IC Role / Device Role / Timing Role: Primary surge suppression stage upstream of DC/DC converters and LDOs. Use Value: 207 V clamping ensures downstream regulators operate within safe input limits during lightning-induced transients. |
Use Scenario: Protecting MCU GPIOs and gate drivers connected to brushed DC motor H-bridges in smart appliances. IC Role / Device Role / Timing Role: Snubber-style transient absorber across motor terminals and control signal paths. Use Value: Absorbs 1500 W inductive kickback energy without failure, with short-circuit failure mode for system-level fault containment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150CA | Same VWM (150 V), lower PPPM (400 W), SMA package (smaller thermal mass) | Limited to lower-energy threats; unsuitable for IEC 61000-4-5 Level 4 | Select only for space-constrained consumer designs with sub-1 kV threat profiles |
| SMCJ150CA | Same VWM (150 V), same PPPM (1500 W), identical SMC package, but commercial-grade (no AEC-Q101) | Lacks automotive qualification; not approved for under-hood or safety-critical modules | Choose for cost-sensitive industrial or telecom applications where AEC-Q101 is not mandated |
Compared with SMAJ150CA and SMCJ150CA, SM15T150CAHM3_A/I uniquely combines 1500 W surge capability, AEC-Q101 qualification, halogen-free construction, and full automotive traceability-making it the only option qualified for Tier-1 automotive power rail protection requiring long-term reliability validation.
Availability
SM15T150CAHM3_A/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom DC power feed protection requiring stable component supply and long lifecycle support.
Supply support for SM15T150CAHM3_A/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 high-reliability and automotive-grade components.
The SM15T Series was engineered specifically for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and repeatable clamping performance are mandatory.
FAQ
What does the "HM3" suffix indicate in SM15T150CAHM3_A/I?
The HM3 suffix in SM15T150CAHM3_A/I denotes halogen-free, RoHS-compliant construction and AEC-Q101 qualification. This means the device meets automotive reliability standards-including temperature cycling, humidity testing, and mechanical shock-and contains no brominated flame retardants or chlorine-based compounds, satisfying strict environmental and safety requirements for vehicle electronics.
Is SM15T150CAHM3_A/I suitable for protecting CAN bus lines?
Yes, SM15T150CAHM3_A/I is suitable for CAN bus line protection when used with appropriate series impedance. Its bidirectional clamping, 150 V standoff, and 207 V clamping voltage allow it to suppress common-mode transients on CAN_H/CAN_L without interfering with nominal ±2.5 V differential signaling. It is commonly deployed in automotive gateway modules and body control units where CAN FD networks require robust EMC resilience.
How does the clamping voltage of SM15T150CAHM3_A/I compare to its breakdown voltage?
SM15T150CAHM3_A/I has a minimum breakdown voltage (VBR) of 143 V and a maximum clamping voltage (VC) of 207 V at 7.2 A (10/1000 μs). The clamping ratio VC/VBR is approximately 1.39, indicating tight voltage control during surge events. This low ratio ensures protected circuits experience minimal overvoltage stress relative to the device's rated standoff level.
What PCB layout guidance applies to SM15T150CAHM3_A/I for optimal surge performance?
For optimal surge performance, SM15T150CAHM3_A/I must be mounted on 8.0 mm × 8.0 mm copper pads per terminal, as specified in the Vishay datasheet. Short, wide traces to ground and minimized loop area between the TVS and protected node reduce inductance and preserve clamping effectiveness. Avoid thermal relief on pads to maintain thermal conductivity and prevent localized overheating during repetitive surges.
Does SM15T150CAHM3_A/I have a defined failure mode under overstress conditions?
Yes, SM15T150CAHM3_A/I fails short-circuit under sustained overstress conditions-such as prolonged overvoltage beyond its power dissipation limit or excessive surge repetition rate. This fail-safe behavior prevents open-circuit loss of protection and allows downstream fusing or current-limiting circuitry to isolate the fault, preserving system-level safety in automotive and industrial deployments.
SM15T150CAHM3_A/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:
- Active
- 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_A/I FAQ
1.How can I place an order for SM15T150CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SM15T150CAHM3_A/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_A/I reliable?
The price and inventory of SM15T150CAHM3_A/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_A/I is usually 5 days.
3.What payment methods are accepted for SM15T150CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SM15T150CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SM15T150CAHM3_A/I?
SM15T150CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SM15T150CAHM3_A/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_A/I?
For technical support, including SM15T150CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SM15T150CAHM3_A/I requirements.
6.How does Aetrix verify that SM15T150CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SM15T150CAHM3_A/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_A/I meets industry standards.
7.What is the process for return or replacement of SM15T150CAHM3_A/I?
All SM15T150CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SM15T150CAHM3_A/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_A/I part is unused and in its original packaging.
Return procedure for SM15T150CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SM15T150CAHM3_A/I Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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