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Vishay General Semiconductor - Diodes Division 1.5SMC150CAHM3/I
- Part No.:
- 1.5SMC150CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150CAHM3/I.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,238
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Product details
Overview
1.5SMC150CAHM3/I from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection. It features a 150 V standoff voltage (VWM), 171 V minimum breakdown voltage (VBR), 207 V maximum clamping voltage (VC) at 7.2 A peak pulse current (IPPM), and 1500 W peak pulse power capability with 10/1000 μs waveform - deployed to safeguard MOSFETs and sensor signal lines in automotive ECUs.
For engineers reviewing the 1.5SMC150CAHM3/I datasheet, 1.5SMC150CAHM3/I pinout, 1.5SMC150CAHM3/I application, or 1.5SMC150CAHM3/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), bidirectional clamping behavior, and halogen-free RoHS-compliant construction per JESD201 Class 2 whisker test.
Technical Context
The 1.5SMC150CAHM3/I operates as a bidirectional avalanche diode, symmetrically clamping transient overvoltages in both polarities without polarity marking. Its glass-passivated junction ensures stable breakdown characteristics and low incremental surge resistance, enabling sub-nanosecond response to ESD and lightning-induced surges.
Rated for 1500 W peak pulse power under 10/1000 μs waveform at 0.01% duty cycle, it sustains repetitive transients when mounted on 8.0 mm × 8.0 mm copper pads. Thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W, with operating junction temperature spanning −65 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin below breakdown. |
| VBR (Breakdown Voltage) | 171–189 V at 1 mA - Confirmed avalanche initiation range; ensures reliable turn-on during transients. |
| VC (Clamping Voltage) | 207 V at IPPM = 7.2 A - Peak voltage seen by protected circuit during 10/1000 μs surge; determines stress on downstream components. |
| PPPM | 1500 W - Surge energy handling capacity under standard 10/1000 μs waveform; supports IEC 61000-4-5 Level 4 compliance. |
| ID (Leakage Current) | <1 μA at 150 V - Ultra-low reverse leakage preserves signal integrity and minimizes standby power loss. |
| TJ max. | +150 °C - Enables use in under-hood automotive environments and industrial power supplies with elevated ambient temperatures. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with automated pick-and-place and reflow soldering. |
Pinout & Package
SMC (DO-214AB) package: bidirectional device with no polarity marking; symmetrical terminal configuration. Cathode/anode designation does not apply - both terminals function identically in either direction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient Input/Output Node | Either side of protected line (e.g., CAN_H or LIN bus); accepts surge energy from either polarity. |
| Terminal 2 | Transient Input/Output Node | Second side of differential or single-ended line; completes bidirectional clamping path to ground or rail. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or floating signal lines (e.g., RS-485, CAN, LIN) without polarity concerns. |
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Halogen-free & RoHS-compliant | Meets automotive environmental standards (JESD201 Class 2 whisker test) and EU regulatory requirements. |
| 1500 W peak pulse power | Withstands IEC 61000-4-5 4th-level surge (4 kV line-to-ground, 2 kV line-to-line) without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.21) | Minimizes overvoltage overshoot during fast transients, reducing risk of IC latch-up or gate oxide damage. |
Applications
| Automotive Sensor Interface Protection | CAN Bus Transient Suppression |
|---|---|
|
Use Scenario: Protecting analog output pins of pressure, temperature, and position sensors in engine bay modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed across sensor supply and ground to clamp ±100 V transients within 1 ns. Use Value: Prevents sensor IC damage while maintaining <1 μA leakage to avoid offset errors in precision ratiometric measurements. |
Use Scenario: Safeguarding CAN_H and CAN_L lines in vehicle infotainment and gateway ECUs against ESD (±8 kV contact) and burst noise. IC Role / Device Role / Timing Role: Differential-mode TVS pair (one per line) referenced to chassis ground, leveraging symmetrical clamping. Use Value: Maintains CAN signal integrity up to 1 Mbps by limiting clamping voltage to 207 V without adding parasitic capacitance (>100 pF). |
| Industrial PLC Analog Input Protection | Telecom Line Card Surge Defense |
|
Use Scenario: Shielding 4–20 mA current loop inputs in programmable logic controllers from induced surges due to nearby motor switching. IC Role / Device Role / Timing Role: Bidirectional TVS installed between input terminal and local ground plane, absorbing 1500 W surges repetitively. Use Value: Ensures uninterrupted operation under repeated 10/1000 μs transients (0.01% duty cycle) without derating or thermal runaway. |
Use Scenario: Front-end protection of POTS or xDSL line interface circuits exposed to lightning-induced surges on outside plant wiring. IC Role / Device Role / Timing Role: Primary surge arrestor placed before transformer coupling, rated for 4 kV common-mode surge per IEC 61000-4-5. Use Value: Survives multiple 1500 W surges while preserving low-leakage performance critical for DSL signal-to-noise ratio. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Lower PPPM (600 W), same VWM (150 V), larger SMB package (DO-214AA), higher RθJA (110 °C/W) | Not suitable for 1500 W surge events; limited to lower-energy IEC 61000-4-5 Level 2/3 environments | Select only if board space constraints prevent SMC placement or thermal budget allows higher junction rise. |
| 1.5KE150CA | Through-hole TO-218 package, identical VWM/VC specs, but incompatible with SMT assembly and lacks AEC-Q101 qualification | Requires manual soldering and PCB through-holes; unsuitable for automotive production or high-volume automated manufacturing | Consider only for prototyping or legacy through-hole designs where rework tolerance outweighs production efficiency. |
Compared with SMBJ150CA and 1.5KE150CA, the 1.5SMC150CAHM3/I uniquely combines 1500 W surge rating, SMC surface-mount compatibility, AEC-Q101 qualification, and halogen-free construction - making it the only drop-in solution for automotive-grade, high-reliability SMT surge protection.
Availability
1.5SMC150CAHM3/I is available at Aetrix Electronics and suitable for automotive ECU design, industrial PLC analog input protection, and telecom line card surge defense requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for 1.5SMC150CAHM3/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, automotive qualification, and high-power handling.
The 1.5SMC Series was developed specifically for robust, surface-mount transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 compliance and 1500 W surge immunity.
FAQ
What is the clamping voltage of the 1.5SMC150CAHM3/I at its rated peak pulse current?
The 1.5SMC150CAHM3/I has a maximum clamping voltage (VC) of 207 V at its specified peak pulse current (IPPM) of 7.2 A under the 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88303 and reflects worst-case voltage seen by protected circuitry during standardized surge testing. The 1.5SMC150CAHM3/I maintains this clamping performance across its full operating temperature range (−65 °C to +150 °C) when mounted per recommended pad layout.
Is the 1.5SMC150CAHM3/I qualified for automotive applications?
Yes, the 1.5SMC150CAHM3/I carries AEC-Q101 qualification, confirmed by its HM3 suffix and documentation in Vishay's 1.5SMC Series datasheet (Rev. 09-Mar-2026). It is rated for use in automotive subsystems including engine control units, body control modules, and ADAS sensor interfaces. The 1.5SMC150CAHM3/I also meets JESD201 Class 2 whisker resistance and UL 497B recognition for protector classification.
How does the 1.5SMC150CAHM3/I differ from unidirectional variants like 1.5SMC150A?
The 1.5SMC150CAHM3/I is bidirectional, meaning it clamps transients equally in both polarities with no cathode marking, whereas 1.5SMC150A is unidirectional and requires correct polarity orientation. The 1.5SMC150CAHM3/I has identical VWM (150 V), VBR (171–189 V), and VC (207 V) ratings but applies them symmetrically - making it ideal for AC-coupled or floating lines such as CAN, RS-485, or audio interfaces where polarity reversal may occur.
What is the thermal resistance of the 1.5SMC150CAHM3/I, and how does it affect layout?
The 1.5SMC150CAHM3/I has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal, as specified in Vishay document 88303. This value assumes minimum recommended pad layout; reducing pad area increases RθJA and risks exceeding TJ max. of +150 °C during repetitive surges. Layout must follow the SMC (DO-214AB) mounting dimensions shown on page 5 to ensure thermal and mechanical reliability.
Does the 1.5SMC150CAHM3/I meet RoHS and halogen-free requirements?
Yes, the 1.5SMC150CAHM3/I is halogen-free and RoHS-compliant, as indicated by the "HM3" suffix per Vishay's ordering nomenclature. It satisfies JEDEC JESD201 Class 2 whisker resistance and uses molding compound meeting UL 94 V-0 flammability rating. Lead finish is matte tin, solderable per J-STD-002 and JESD22-B102, and fully compliant with EU Directive 2011/65/EU and related amendments.
1.5SMC150CAHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- 1.5SMC, 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
1.5SMC150CAHM3/I FAQ
1.How can I place an order for 1.5SMC150CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150CAHM3/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 1.5SMC150CAHM3/I reliable?
The price and inventory of 1.5SMC150CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1.5SMC150CAHM3/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC150CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150CAHM3/I?
1.5SMC150CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150CAHM3/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 1.5SMC150CAHM3/I?
For technical support, including 1.5SMC150CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150CAHM3/I requirements.
6.How does Aetrix verify that 1.5SMC150CAHM3/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150CAHM3/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 1.5SMC150CAHM3/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC150CAHM3/I?
All 1.5SMC150CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150CAHM3/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 1.5SMC150CAHM3/I part is unused and in its original packaging.
Return procedure for 1.5SMC150CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC150CAHM3/I Tags
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DESD3V3E1BL-7B
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Diodes Incorporated
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