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Vishay General Semiconductor - Diodes Division SMCJ150CA-M3/57T
- Part No.:
- SMCJ150CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150CA-M3/57T.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,893
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Product details
Overview
SMCJ150CA-M3/57T 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 of sensitive electronics. It features a 150 V standoff voltage (VWM), 243 V maximum clamping voltage (VC) at 6.2 A peak pulse current (IPPM), and 1500 W peak pulse power dissipation (PPPM) with 10/1000 μs waveform - deployed in automotive sensor signal lines, industrial I/O ports, and telecom interface protection.
For engineers reviewing the SMCJ150CA-M3/57T datasheet, SMCJ150CA-M3/57T pinout, SMCJ150CA-M3/57T application, or SMCJ150CA-M3/57T equivalent, this page delivers verified electrical specs, thermal derating behavior, bidirectional clamping performance, JEDEC-compliant SMC package dimensions, and AEC-Q101-qualified alternatives for automotive-grade design-in.
Technical Context
The SMCJ150CA-M3/57T 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 across temperature.
It complies with ANSI/IEEE C62.35 for surge protector classification and meets UL 497B recognition (QVGQ2) for telecom and industrial protectors. Thermal resistance is 75 °C/W (junction-to-ambient) on standard 8.0 mm × 8.0 mm copper pads, with derating above 25 °C per Figure 2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 150 V - Maximum continuous reverse voltage before clamping begins; defines operating margin below breakdown. |
| VBR (Breakdown Voltage) | 167–185 V at 1 mA - Confirmed minimum/maximum avalanche initiation range; ensures reliable turn-on under transients. |
| VC (Clamping Voltage) | 243 V at IPPM = 6.2 A - Peak voltage seen by protected circuit during 10/1000 μs surge; critical for downstream IC survivability. |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capacity for standardized 10/1000 μs waveform; enables robust protection against lightning-induced surges. |
| TJ max. | 150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial ambient environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint; compatible with automated placement and J-STD-002 soldering. |
| MSL Level | Level 1 (J-STD-020) - No floor life limitation; suitable for immediate reflow without baking. |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix); meets JESD201 Class 2 whisker resistance. |
Pinout & Package
SMCJ150CA-M3/57T uses the SMC (DO-214AB) package - a surface-mount, dual-terminal, bidirectional device with no polarity marking. Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD22-B102. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between terminals; identical clamping behavior in either direction - eliminates orientation errors during assembly. |
| Case (body) | Thermal and mechanical interface | Plastic molding meets UL 94 V-0; provides insulation and mechanical stability while enabling heat conduction to PCB copper. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Height ≤ 2.62 mm - Enables compact layout in space-constrained modules like automotive ECUs and IoT edge nodes. |
| Very fast response time | < 1.0 ps - Sub-nanosecond avalanche turn-on ensures protection before transient energy damages downstream MOSFETs or microcontrollers. |
| Excellent clamping capability | VC/VWM ratio = 1.62 - Low clamping ratio preserves margin for 3.3 V/5 V logic rails while handling high-energy surges. |
| AEC-Q101 qualified option | HM3 suffix variant available - Validated for automotive applications including engine control, ADAS sensors, and infotainment interfaces. |
| Halogen-free & RoHS | M3 suffix - Meets environmental compliance requirements for global industrial and consumer product certifications. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Port |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning ICs. Use Value: Withstands 1500 W surges while limiting clamped voltage to 243 V - sufficient headroom for 12 V/24 V automotive systems with 40 V transients. |
Use Scenario: Shielding digital input/output channels on programmable logic controllers from ESD and inductive switching spikes in factory automation. IC Role / Device Role / Timing Role: Parallel-connected TVS on each I/O line to ground, providing low-impedance path during 8/20 μs or 10/1000 μs transients. Use Value: 6.2 A IPPM rating and 243 V VC ensure compatibility with IEC 61000-4-5 Level 4 (4 kV) testing when combined with series impedance. |
| Telecom Interface Protection | Consumer Power Adapter Output |
|
Use Scenario: Safeguarding Ethernet PHYs, RS-485 transceivers, and DSL line drivers against lightning-induced surges on outdoor-facing ports. IC Role / Device Role / Timing Role: Primary-level TVS in cascade with GDT or polymer PTC, absorbing bulk surge energy before secondary protection stages. Use Value: UL 497B recognition and 1500 W PPPM support telecom infrastructure compliance with GR-1089-CORE and ITU-T K.21. |
Use Scenario: Clamping output rail overvoltage in AC/DC adapters caused by MOV failure or rectifier reverse recovery spikes. IC Role / Device Role / Timing Role: Secondary-side TVS across DC output capacitor to prevent overvoltage damage to connected USB-C PD or USB-A devices. Use Value: 150 V VWM aligns with 12–19 V adapter outputs; 243 V VC prevents latch-up in downstream USB power switches and load switches. |
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), same VWM (150 V), smaller SMA package (DO-214AC) | Reduced surge handling; suitable only for lower-energy ESD or proximity EFT events, not lightning surges. | Select when board space is constrained and surge threat level is limited to IEC 61000-4-2 Level 4 (15 kV air/8 kV contact). |
| SMCJ150A-M3/57T | Unidirectional version; cathode band marking; identical VWM, VBR, VC, and PPPM ratings | Requires correct polarity placement; used where DC bias exists and reverse conduction must be blocked. | Choose for DC-coupled lines (e.g., power supply rails) where asymmetric clamping is acceptable and polarity is controlled. |
Compared with SMCJ150CA-M3/57T, the SMAJ150A-M3/57T trades surge capacity for footprint reduction, while the SMCJ150A-M3/57T offers identical clamping performance but mandates polarity-aware layout - making the bidirectional SMCJ150CA-M3/57T optimal for AC-coupled or floating signal paths requiring zero-orientation assembly.
Availability
SMCJ150CA-M3/57T is available at Aetrix Electronics and suitable for automotive sensor protection, industrial PLC I/O hardening, and telecom interface surge suppression requiring stable component supply, halogen-free compliance, and MSL Level 1 handling.
Supply support for SMCJ150CA-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 efficiency, and automotive qualification.
The SMCJ series targets high-energy transient suppression in harsh environments - engineered for AEC-Q101 readiness, UL recognition, and consistent clamping performance across temperature and surge repetition.
FAQ
What is the clamping voltage of SMCJ150CA-M3/57T at its rated peak pulse current?
The SMCJ150CA-M3/57T has a maximum clamping voltage (VC) of 243 V at its rated peak pulse current (IPPM) of 6.2 A, measured using the standardized 10/1000 μs waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuits during surge events - a critical parameter for ensuring downstream IC survival in automotive and industrial applications.
Is SMCJ150CA-M3/57T suitable for automotive applications?
Yes, the SMCJ150CA-M3/57T is halogen-free and RoHS-compliant (M3 suffix), and an AEC-Q101-qualified variant (SMCJ150CA-HM3/57T) is available for automotive use. While the M3 version itself is commercial-grade, its 150 °C TJ max., UL 497B recognition, and robust 1500 W surge rating make it widely deployed in non-safety-critical automotive subsystems such as body control modules, HVAC sensors, and infotainment interfaces.
How does the bidirectional design of SMCJ150CA-M3/57T affect PCB layout?
The bidirectional design of SMCJ150CA-M3/57T eliminates polarity marking - there is no cathode band or orientation requirement. This simplifies PCB layout and assembly, reduces risk of misplacement, and enables direct replacement in AC-coupled or floating signal paths (e.g., RS-485, Ethernet, audio lines) without redesigning trace routing or silkscreen. The SMCJ150CA-M3/57T mounts identically regardless of voltage polarity.
What is the thermal resistance of SMCJ150CA-M3/57T, and how does it impact power derating?
The SMCJ150CA-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. This value drives thermal derating above 25 °C ambient: power dissipation drops linearly to zero at 150 °C junction temperature. For sustained operation, designers must verify board copper area and airflow to maintain TJ ≤ 150 °C under worst-case surge repetition rates.
Does SMCJ150CA-M3/57T meet any safety or regulatory standards?
Yes, the SMCJ150CA-M3/57T carries Underwriters Laboratories (UL) recognition under file E136766 for both unidirectional and bidirectional devices, compliant with UL 497B for telecommunications protectors. It also meets ANSI/IEEE C62.35 surge protector standards and has flammability rating UL 94 V-0 for its SMC molding compound - supporting certification in industrial, telecom, and consumer end equipment.
SMCJ150CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCJ150CA-M3/57T FAQ
1.How can I place an order for SMCJ150CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150CA-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 SMCJ150CA-M3/57T reliable?
The price and inventory of SMCJ150CA-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 SMCJ150CA-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ150CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150CA-M3/57T?
SMCJ150CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150CA-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 SMCJ150CA-M3/57T?
For technical support, including SMCJ150CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150CA-M3/57T requirements.
6.How does Aetrix verify that SMCJ150CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ150CA-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 SMCJ150CA-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ150CA-M3/57T?
All SMCJ150CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150CA-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 SMCJ150CA-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ150CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150CA-M3/57T Tags
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