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Vishay General Semiconductor - Diodes Division SMCJ150A-M3/57T
- Part No.:
- SMCJ150A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150A-M3/57T.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,915
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Product details
Overview
SMCJ150A-M3/57T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 150 V stand-off voltage (VWM), 167–185 V breakdown voltage (VBR) at 1 mA, 243 V maximum clamping voltage (VC) at 6.2 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (10/1000 µs waveform), commonly deployed in automotive power supply input stages.
For engineers reviewing the SMCJ150A-M3/57T datasheet, SMCJ150A-M3/57T pinout, SMCJ150A-M3/57T application, or SMCJ150A-M3/57T equivalent, key selection criteria include clamping performance under 10/1000 µs surge, thermal resistance (RθJA = 75 °C/W), unidirectional polarity marking, halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ150A-M3/57T operates as a silicon avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its unidirectional configuration provides cathode-banded polarity for DC rail protection, with clamping action triggered when reverse voltage exceeds VBR (167–185 V) and limiting transient energy to safe levels before downstream ICs or MOSFETs are damaged.
Designed for high-reliability environments, it meets MSL Level 1 per J-STD-020 (peak reflow ≤ 260 °C), supports 200 A non-repetitive forward surge (8.3 ms half-sine), and maintains stable operation across -55 °C to +150 °C junction temperature range - critical for under-hood automotive and industrial power systems where thermal derating must be modeled using Fig. 2 in the datasheet.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - maximum continuous reverse operating voltage; defines upper limit of normal DC rail operation before clamping initiates |
| VBR min/max | 167 V / 185 V at 1 mA - guaranteed avalanche onset range; ensures predictable turn-on margin above VWM |
| VC @ IPPM | 243 V at 6.2 A - clamped voltage during 10/1000 µs surge; determines worst-case stress on protected circuitry |
| PPPM | 1500 W - peak pulse power handling capability; validates survivability against IEC 61000-4-5 Level 4 surges |
| RθJA | 75 °C/W - junction-to-ambient thermal resistance on standard 8.0 mm × 8.0 mm pads; governs power derating above 25 °C ambient |
| IFSM | 200 A - single half-sine surge rating (8.3 ms); supports protection of 12 V/24 V battery-fed systems during load dump |
| TJ max | +150 °C - maximum junction temperature; enables use in high-temperature engine control units without thermal shutdown |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, halogen-free, RoHS-compliant (M3 suffix), matte tin-plated leads, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Reverse-biased anode connection point | Connected to protected line (e.g., +12 V rail); clamps transients to ground when voltage exceeds VBR |
| Anode | Reference/ground return path | Connected to system ground plane; completes clamping loop and defines reference for VC measurement |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables high-density PCB layouts in space-constrained automotive ECUs and industrial controllers |
| Glass-passivated junction | Ensures long-term reliability and stable VBR over temperature and lifetime vs. epoxy-passivated alternatives |
| MSL Level 1 rating | Supports lead-free reflow without popcorn cracking or delamination during standard SMT assembly |
| 1500 W peak pulse power | Provides margin against ISO 7637-2 Pulse 5a (load dump) and IEC 61000-4-5 Combination Wave surges |
| Halogen-free (M3) | Meets automotive OEM environmental requirements (e.g., GMW3172, Ford WSS-M99P1111-A) and simplifies end-of-life recycling |
Applications
| Automotive Power Input Protection | Industrial DC Power Rail Clamping |
|---|---|
Use Scenario: Protecting 24 V battery-fed engine control modules from load dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional TVS diode placed between battery rail and DC-DC converter input. Use Value: Limits clamped voltage to 243 V, preventing damage to 36 V-rated input capacitors and MOSFETs while surviving 200 A surge. | Use Scenario: Safeguarding programmable logic controller (PLC) 24 V DC inputs against inductive switching spikes from solenoid valves. IC Role / Device Role / Timing Role: Standoff protection device mounted directly at terminal block entry point. Use Value: Responds in <1 ns to clamp 1 kV/100 A transients to ≤243 V, preserving signal integrity and avoiding false triggering of digital inputs. |
| Telecom Line Interface Protection | Consumer Power Adapter Surge Suppression |
Use Scenario: Shielding Ethernet PHY power pins (e.g., PoE PSE side) from ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Secondary-level TVS on 48 V bias rail upstream of DC-DC regulation. Use Value: Delivers 1500 W pulse handling with 75 °C/W thermal resistance, enabling compact heatsink-free designs in telecom chassis. | Use Scenario: Adding robust surge immunity to USB-C PD adapter secondary-side 20 V output rails. IC Role / Device Role / Timing Role: Final-stage clamping device after secondary rectification and filtering. Use Value: Maintains 150 V standoff while clamping to 243 V, ensuring compliance with UL 1449 Type 4 SPD requirements without compromising efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ150A-M3/57T | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher RθJA (110 °C/W) | Restricted to lower-energy transients; unsuitable for load dump or IEC 61000-4-5 Level 4 | Select only for space-constrained consumer electronics with <500 W surge requirements |
| SMCJ150CA-M3/57T | Bidirectional variant; identical VWM (150 V), same PPPM (1500 W), but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN bus) where polarity reversal occurs | Choose when protecting bidirectional data lines or AC-powered circuits; not interchangeable for unidirectional DC rails |
Compared with SMAJ150A-M3/57T and SMCJ150CA-M3/57T, the SMCJ150A-M3/57T delivers optimal balance of high-energy clamping (1500 W), thermal performance (75 °C/W), and unidirectional DC rail compatibility - making it the preferred choice for automotive and industrial 24 V/48 V power systems requiring AEC-Q101-grade robustness without bidirectional symmetry.
Availability
SMCJ150A-M3/57T is available at Aetrix Electronics and suitable for automotive engine control units, industrial programmable logic controllers, telecom power interfaces, and consumer power adapters requiring stable component supply and halogen-free compliance.
Supply support for SMCJ150A-M3/57T 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, power handling, and automotive qualification.
The SMCJ series targets high-energy transient suppression in harsh environments, with design focus on automotive load dump, industrial inductive switching, and telecom surge standards - delivering consistent clamping performance across temperature and lifetime.
FAQ
What is the maximum clamping voltage of the SMCJ150A-M3/57T under a 10/1000 µs surge?
The SMCJ150A-M3/57T has a maximum clamping voltage (VC) of 243 V when subjected to its rated peak pulse current (IPPM) of 6.2 A under a 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during standardized surge events - critical for verifying margin against downstream component voltage ratings in designs such as automotive 24 V power supplies.
Does the SMCJ150A-M3/57T meet AEC-Q101 qualification?
No, the SMCJ150A-M3/57T is a commercial-grade halogen-free part (M3 suffix) and is not AEC-Q101 qualified. For automotive-qualified versions, select the SMCJ150A-HM3_X variant (e.g., SMCJ150A-HM3_A), which carries the HM3 suffix and explicit AEC-Q101 certification noted in Vishay's ordering information table - essential for safety-critical engine control or ADAS applications requiring automotive reliability validation.
How does the SMCJ150A-M3/57T differ from the SMCJ150CA-M3/57T?
The SMCJ150A-M3/57T is unidirectional with cathode-band polarity, intended for DC rail protection where current flows in one direction, while the SMCJ150CA-M3/57T is bidirectional with no polarity marking and symmetric clamping in both directions. Their VWM (150 V), PPPM (1500 W), and package are identical, but they are not functionally interchangeable - using the unidirectional SMCJ150A-M3/57T on an AC or floating line may fail to suppress positive transients.
What is the thermal resistance and how does it affect layout for the SMCJ150A-M3/57T?
The SMCJ150A-M3/57T 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. This value assumes minimum recommended pad layout per Vishay's mechanical drawing; reducing pad area increases RθJA and requires derating power dissipation above 25 °C ambient using Fig. 2 in the datasheet to avoid exceeding the +150 °C maximum junction temperature.
Can the SMCJ150A-M3/57T be used in place of a 150 V Zener diode for overvoltage protection?
No - the SMCJ150A-M3/57T is a transient voltage suppressor optimized for short-duration, high-energy surges (e.g., 10/1000 µs), not steady-state regulation. Unlike Zener diodes, it exhibits high leakage (<1 µA at 150 V) and undefined behavior under continuous overvoltage; it must be paired with upstream current limiting and is unsuitable for precision voltage reference or constant-voltage clamp applications. Its role is exclusively surge suppression, not regulation.
SMCJ150A-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 150V
- Voltage - Breakdown (Min):
- 167V
- Voltage - Clamping (Max) @ Ipp:
- 243V
- Current - Peak Pulse (10/1000µs):
- 6.2A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
SMCJ150A-M3/57T FAQ
1.How can I place an order for SMCJ150A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150A-M3/57T 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 SMCJ150A-M3/57T reliable?
The price and inventory of SMCJ150A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ150A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ150A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150A-M3/57T?
SMCJ150A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150A-M3/57T 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 SMCJ150A-M3/57T?
For technical support, including SMCJ150A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150A-M3/57T requirements.
6.How does Aetrix verify that SMCJ150A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ150A-M3/57T 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 SMCJ150A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ150A-M3/57T?
All SMCJ150A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150A-M3/57T, 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 SMCJ150A-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ150A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150A-M3/57T Tags
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