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Vishay General Semiconductor - Diodes Division 1.5SMC150CAHM3_A/I
- Part No.:
- 1.5SMC150CAHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
1.5SMC150CAHM3_A/I.pdf
- Description:
- TVS DIODE 128VWM 207VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,503
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Product details
Overview
1.5SMC150CAHM3_A/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on power and signal lines. It features a 150 V standoff voltage (VWM), 165 V breakdown voltage (VBR min), 207 V clamping voltage (VC) at 7.2 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 μs waveform - deployed in automotive sensor interfaces, industrial I/O protection, and telecom line conditioning.
For engineers reviewing the 1.5SMC150CAHM3_A/I datasheet, 1.5SMC150CAHM3_A/I pinout, 1.5SMC150CAHM3_A/I application, or 1.5SMC150CAHM3_A/I equivalent, key selection criteria include bidirectional clamping performance, AEC-Q101 qualification status, thermal resistance (RθJA = 75 °C/W), and compatibility with automated SMT assembly on standard PCB pad layouts.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at VWM), but triggers into low-impedance conduction when transient voltage exceeds VBR, diverting surge current away from downstream circuitry. Its glass-passivated junction ensures stable avalanche characteristics and long-term reliability under repetitive surges.
The 1.5SMC150CAHM3_A/I is rated for 1500 W peak pulse power (10/1000 μs), supports operating junction temperatures from –65 °C to +150 °C, and meets J-STD-020 MSL Level 1 with 260 °C reflow peak - confirming suitability for lead-free reflow processes without preconditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - maximum continuous reverse working voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (Breakdown Voltage) | 165–183 V at 1 mA - precise avalanche initiation range; ensures predictable turn-on during transients |
| VC (Clamping Voltage) | 207 V at IPPM = 7.2 A - maximum voltage seen by protected circuit during full-rated surge; critical for IC survivability |
| PPPM (Peak Pulse Power) | 1500 W - energy-handling capacity for 10/1000 μs waveform; enables robust lightning and ESD immunity per IEC 61000-4-5 |
| RθJA | 75 °C/W - thermal resistance from junction to ambient; determines derating needed above 25 °C ambient |
| TJ max | +150 °C - maximum junction temperature; supports operation in under-hood automotive and industrial environments |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional - no polarity marking; symmetrical terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Surge current path | Both terminals serve identically as input/output nodes for bidirectional clamping; no cathode band marking required |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity concerns |
| 1500 W peak pulse power | Meets IEC 61000-4-5 Level 4 (4 kV surge) requirements with margin for system-level compliance |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules, ADAS sensors, and infotainment power rails |
| MSL Level 1, 260 °C peak | Supports standard lead-free reflow without baking or special handling - reduces manufacturing overhead |
| Glass-passivated junction | Ensures stable VBR over lifetime and resistance to humidity-induced parameter drift |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) against load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt TVS diode placed at connector interface to clamp transients before they reach signal conditioning circuitry. Use Value: Prevents latch-up or permanent damage to 3.3 V/5 V microcontrollers and precision ADCs during 12 V/24 V system surges. |
Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Bidirectional voltage clamp on 24 V DC field wiring to suppress flyback spikes up to 1 kV. Use Value: Eliminates need for external RC snubbers while maintaining fast response (<1 ns) and low clamping overshoot. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Surge protection on Ethernet PHY side of PoE-powered devices and DSL line drivers subjected to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Primary-level TVS across differential pairs or between line and chassis ground. Use Value: Maintains signal integrity with <10 pF junction capacitance at zero bias while surviving repeated 6 kV contact discharge events. |
Use Scenario: Secondary-side overvoltage suppression in AC/DC adapters after rectification, protecting switching controllers and optocouplers. IC Role / Device Role / Timing Role: Clamp device across bulk capacitor to absorb line-induced transients during brownout recovery. Use Value: Enables compact design with 0.211 g weight and SMC footprint - avoids through-hole alternatives requiring larger board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150CA | Lower peak pulse power (600 W), same VWM/VBR/VC ratings, SMB package (smaller footprint, higher RθJA = 90 °C/W) | Preferred for space-constrained consumer designs where 1500 W margin is unnecessary | Select when board area is critical and surge threat level is ≤ IEC 61000-4-5 Level 2 |
| 1.5KE150CA | Through-hole DO-201 package, identical electrical specs, higher mechanical robustness but incompatible with SMT assembly | Used in legacy industrial power supplies requiring manual soldering or high-vibration mounting | Choose only if SMT process is unavailable or mechanical retention outweighs assembly efficiency |
Compared with SMBJ150CA and 1.5KE150CA, the 1.5SMC150CAHM3_A/I delivers optimal balance of high-power surge handling, AEC-Q101 qualification, and SMT manufacturability - making it the preferred choice for new automotive and industrial designs requiring both reliability and production scalability.
Availability
1.5SMC150CAHM3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line conditioning requiring stable component supply, traceable sourcing, and lifecycle continuity.
Supply support for 1.5SMC150CAHM3_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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, power efficiency, and automotive-grade validation.
The 1.5SMC Series targets high-reliability transient suppression in harsh environments - engineered specifically for AEC-Q101-compliant automotive systems, industrial controls, and telecom infrastructure where failure is not an option.
FAQ
What is the clamping voltage of the 1.5SMC150CAHM3_A/I at its rated peak pulse current?
The 1.5SMC150CAHM3_A/I has a maximum clamping voltage (VC) of 207 V at 7.2 A peak pulse current (IPPM), measured using the standardized 10/1000 μs double-exponential waveform. This value is guaranteed per the Vishay datasheet (Document Number: 88303, Rev. 09-Mar-2026) and defines the upper voltage limit imposed on protected circuitry during full-rated surge events.
Is the 1.5SMC150CAHM3_A/I qualified for automotive applications?
Yes, the 1.5SMC150CAHM3_A/I carries AEC-Q101 qualification, confirmed by its HM3 suffix and documentation in the Vishay 1.5SMC Series datasheet. It undergoes stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 requirements - making it suitable for under-hood and cabin-mounted automotive electronics.
What does the "CA" suffix indicate in 1.5SMC150CAHM3_A/I?
The "CA" suffix in 1.5SMC150CAHM3_A/I denotes a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., "A"), it has no cathode marking and functions identically regardless of polarity applied across its terminals.
What is the thermal resistance of the 1.5SMC150CAHM3_A/I, and how does it affect layout?
The 1.5SMC150CAHM3_A/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. To maintain safe junction temperatures under sustained power dissipation, PCB layout must provide adequate copper area and avoid thermal isolation - especially important in automotive and industrial applications operating above 25 °C ambient.
How does the 1.5SMC150CAHM3_A/I differ from the 1.5SMC150A variant?
The 1.5SMC150CAHM3_A/I is bidirectional (CA), while 1.5SMC150A is unidirectional (A). Additionally, the HM3 suffix indicates halogen-free, RoHS-compliant construction with AEC-Q101 qualification and MSL Level 1 rating - whereas base 1.5SMC150A lacks automotive qualification and may use different material sets or packaging standards.
1.5SMC150CAHM3_A/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:
- 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:
- 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_A/I FAQ
1.How can I place an order for 1.5SMC150CAHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for 1.5SMC150CAHM3_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 1.5SMC150CAHM3_A/I reliable?
The price and inventory of 1.5SMC150CAHM3_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 1.5SMC150CAHM3_A/I is usually 5 days.
3.What payment methods are accepted for 1.5SMC150CAHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1.5SMC150CAHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1.5SMC150CAHM3_A/I?
1.5SMC150CAHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1.5SMC150CAHM3_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 1.5SMC150CAHM3_A/I?
For technical support, including 1.5SMC150CAHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1.5SMC150CAHM3_A/I requirements.
6.How does Aetrix verify that 1.5SMC150CAHM3_A/I is sourced from the original manufacturer or authorized distributors?
All 1.5SMC150CAHM3_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 1.5SMC150CAHM3_A/I meets industry standards.
7.What is the process for return or replacement of 1.5SMC150CAHM3_A/I?
All 1.5SMC150CAHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with 1.5SMC150CAHM3_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 1.5SMC150CAHM3_A/I part is unused and in its original packaging.
Return procedure for 1.5SMC150CAHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1.5SMC150CAHM3_A/I Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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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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DESD5V0U1BB-7
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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