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Vishay General Semiconductor - Diodes Division SMCJ150A-M3/9AT
- Part No.:
- SMCJ150A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ150A-M3/9AT.pdf
- Description:
- TVS DIODE 150VWM 243VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,330
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Product details
Overview
SMCJ150A-M3/9AT from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 150 V standoff voltage, 243 V clamping voltage at 6.2 A peak pulse current, and 1500 W peak pulse power rating under 10/1000 μs waveform. It protects MOSFETs, ICs, and sensor signal lines in automotive power systems and industrial control interfaces.
For engineers reviewing the SMCJ150A-M3/9AT datasheet, SMCJ150A-M3/9AT pinout, SMCJ150A-M3/9AT application, or SMCJ150A-M3/9AT equivalent, this page delivers verified electrical parameters, thermal derating behavior, junction-to-lead thermal resistance, polarity marking convention, and halogen-free RoHS-compliant sourcing status per Vishay's M3 suffix specification.
Technical Context
This TVS diode operates as a voltage-clamping device triggered by transient overvoltage events exceeding its 150 V reverse standoff voltage (VWM), with breakdown occurring between 167 V and 185 V at 1 mA test current. Its low incremental surge resistance enables rapid energy diversion during 8.3 ms half-sine surges up to 200 A IFSM.
Thermal design relies on RθJL = 15 °C/W junction-to-lead resistance and RθJA = 75 °C/W junction-to-ambient rating on standard 8.0 mm × 8.0 mm copper pads. The matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 whisker resistance standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 150 V - Maximum continuous reverse operating voltage before clamping activation |
| VBR min/max | 167 V / 185 V at 1 mA - Confirmed breakdown range defining turn-on threshold tolerance |
| VC @ IPPM | 243 V at 6.2 A - Clamped voltage limiting stress on downstream circuitry during 10/1000 μs transients |
| PPPM | 1500 W - Peak pulse power handling capacity under standardized surge waveform |
| ID @ VWM | 1.0 μA - Reverse leakage ensuring minimal standby power loss and signal integrity |
| TJ max | +150 °C - Maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMC (DO-214AB) - Surface-mount outline with 0.320" length, 0.246" width, and cathode band polarity marking |
Pinout & Package
SMCJ150A-M3/9AT uses the SMC (DO-214AB) package: a rectangular surface-mount case measuring 7.11 mm × 6.22 mm × 2.62 mm, with matte tin-plated leads and a visible cathode band indicating the cathode terminal. Polarity is unidirectional; the banded end connects to circuit ground or return path during clamping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Surge current sink | Connected to system ground or low-impedance return; carries full transient current during clamping |
| Anode (unmarked end) | Protected line connection | Connected to input/power/signal line requiring overvoltage protection; referenced to cathode during conduction |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | M3 suffix confirms compliance with JEDEC J-STD-201 Class 2 whisker resistance and environmental regulations |
| Low incremental surge resistance | Enables tighter clamping voltage margin (VC − VBR ≈ 76 V), reducing voltage overshoot on protected nodes |
| Very fast response time | Sub-nanosecond avalanche turn-on ensures protection before sensitive ICs experience damage from ESD or load-switching spikes |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow without baking, simplifying SMT assembly logistics |
| AEC-Q101 qualification option | HE3/HM3 variants available for automotive applications; M3 base version supports industrial-grade reliability |
Applications
| Automotive Power Distribution | Industrial Motor Drive Inputs |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load-dump transients up to ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive surges above 150 V. Use Value: Limits peak voltage to 243 V during 1500 W surges, preventing gate oxide rupture in power MOSFETs and regulator ICs. |
Use Scenario: Safeguarding PLC analog input modules against inductive kickback from solenoid valves and contactors. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across signal conditioning inputs to absorb 10/1000 μs switching spikes. Use Value: Maintains <1.0 μA leakage at 150 V, preserving measurement accuracy while surviving repeated 6.2 A surge events. |
| Telecom DC Power Feeds | Consumer Appliance Control Boards |
Use Scenario: Shielding PoE-powered switch ports from lightning-induced surges on 48 V DC supply lines. IC Role / Device Role / Timing Role: Primary-level TVS on midspan injector output, coordinated with secondary-side protection. Use Value: Withstands 1500 W pulses without degradation, meeting IEC 61000-4-5 Level 4 requirements when mounted on 8 mm² copper pads. |
Use Scenario: Securing microcontroller I/O pins and relay drivers in washing machine main control units exposed to motor commutation noise. IC Role / Device Role / Timing Role: Localized TVS on each high-side driver output to suppress flyback voltages. Use Value: 150 °C max junction temperature rating ensures stable operation inside sealed enclosures with ambient temperatures up to 85 °C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ150A-M3/57T | Lower PPPM (600 W), smaller SMB (DO-214AA) package, same VWM and VC | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a or IEC 61000-4-5 Level 4 | Select when board space is constrained and surge energy does not exceed 600 W |
| SMCJ150CA-M3/9AT | Bidirectional variant with identical VWM (150 V), symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where negative transients must also be suppressed | Choose for differential bus protection (e.g., RS-485, CAN) or ungrounded sensor outputs |
Compared with SMBJ150A-M3/57T and SMCJ150CA-M3/9AT, the SMCJ150A-M3/9AT provides optimal balance of high-energy single-polarity clamping, industry-standard SMC footprint, and halogen-free compliance-making it the preferred choice for 150 V DC rail protection where cost, reliability, and surge margin are jointly prioritized.
Availability
SMCJ150A-M3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, telecom power supplies, and consumer appliance designs requiring stable component supply and long-term manufacturability.
Supply support for SMCJ150A-M3/9AT 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, efficiency, and application-specific optimization.
The SMCJ series targets high-power transient suppression in harsh environments, delivering robust 1500 W surge capability in compact SMC packages for automotive, industrial, and infrastructure applications.
FAQ
What is the maximum clamping voltage of the SMCJ150A-M3/9AT under standard test conditions?
The SMCJ150A-M3/9AT exhibits a maximum clamping voltage (VC) of 243 V when subjected to its rated peak pulse current of 6.2 A using the 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's Document Number 88394, ensuring predictable overvoltage limiting during surge events. The SMCJ150A-M3/9AT maintains this clamping performance across its specified operating temperature range.
Does the SMCJ150A-M3/9AT have AEC-Q101 qualification?
The SMCJ150A-M3/9AT is not AEC-Q101 qualified; it carries the M3 suffix denoting halogen-free, RoHS-compliant commercial-grade construction. For automotive-qualified versions, engineers should select the SMCJ150A-HM3_X variant (e.g., SMCJ150A-HM3_A), which adds AEC-Q101 qualification while retaining identical electrical characteristics and SMC package dimensions. The SMCJ150A-M3/9AT remains suitable for industrial and telecom applications requiring high-reliability transient suppression.
How does the thermal resistance of the SMCJ150A-M3/9AT affect PCB layout?
The SMCJ150A-M3/9AT has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads per terminal. To maintain TJ ≤ 150 °C under 6.5 W steady-state dissipation, designers must ensure adequate copper area and minimize trace impedance to the ground plane. The SMCJ150A-M3/9AT benefits from direct thermal coupling to large copper zones rather than reliance on via arrays alone.
Can the SMCJ150A-M3/9AT be used in bidirectional signal protection?
No-the SMCJ150A-M3/9AT is strictly unidirectional, with polarity defined by the cathode band. For bidirectional protection (e.g., AC lines or differential buses), the SMCJ150CA-M3/9AT must be used instead; it provides symmetrical clamping for both positive and negative transients while sharing the same VWM, PPPM, and package. Using the SMCJ150A-M3/9AT in bidirectional configurations risks catastrophic failure due to forward conduction during negative excursions.
What is the meaning of the "/9AT" suffix in SMCJ150A-M3/9AT?
The "/9AT" suffix indicates packaging: 3500 units per 13-inch diameter plastic tape-and-reel, compliant with EIA-481-D standards. This format supports high-speed automated placement in SMT lines. The "M3" prefix denotes halogen-free, RoHS-compliant construction with JESD 201 Class 2 whisker resistance. Together, SMCJ150A-M3/9AT specifies a fully traceable, production-ready variant of the SMCJ150A-M3/9AT optimized for volume manufacturing.
SMCJ150A-M3/9AT 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-M3/9AT FAQ
1.How can I place an order for SMCJ150A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ150A-M3/9AT 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-M3/9AT reliable?
The price and inventory of SMCJ150A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ150A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ150A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ150A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ150A-M3/9AT?
SMCJ150A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ150A-M3/9AT 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-M3/9AT?
For technical support, including SMCJ150A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ150A-M3/9AT requirements.
6.How does Aetrix verify that SMCJ150A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ150A-M3/9AT 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-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ150A-M3/9AT?
All SMCJ150A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ150A-M3/9AT, 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-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ150A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ150A-M3/9AT Tags
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