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Vishay General Semiconductor - Diodes Division SMCJ10A-M3/9AT
- Part No.:
- SMCJ10A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ10A-M3/9AT.pdf
- Description:
- TVS DIODE 10VWM 17VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,795
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Product details
Overview
SMCJ10A-M3/9AT 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 10 V stand-off voltage (VWM), 11.1–12.3 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 μs), 17.0 V clamping voltage (VC) at 88.2 A IPPM, and operates from –55 °C to +150 °C junction temperature.
For engineers reviewing the SMCJ10A-M3/9AT datasheet, SMCJ10A-M3/9AT pinout, SMCJ10A-M3/9AT application, or SMCJ10A-M3/9AT equivalent, this device is selected for high-energy surge immunity in automotive power supplies, industrial sensor interfaces, and telecom DC input stages where low clamping voltage and fast response (<1 ns) are critical to protect downstream MOSFETs and ICs.
Technical Context
The SMCJ10A-M3/9AT uses an avalanche breakdown mechanism in a glass-passivated silicon junction to clamp transient voltages within nanoseconds. Its unidirectional polarity-marked with a cathode band-enables integration into DC-biased circuits without reverse conduction during normal operation.
It delivers 1500 W peak pulse power under standardized 10/1000 μs waveform conditions when mounted on 8.0 mm × 8.0 mm copper pads, with thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W ensuring effective heat dissipation in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 10 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC bias margin. |
| VBR (min/max) | 11.1 V / 12.3 V at 1 mA - Ensures reliable turn-on across process variation and temperature. |
| VC @ IPPM | 17.0 V at 88.2 A - Clamped voltage during worst-case 1500 W surge; limits stress on protected ICs. |
| PPPM | 1500 W - Peak surge energy handling per IEC 61000-4-5 Level 4 (10/1000 μs); suitable for harsh environments. |
| TJ max. | +150 °C - Enables use in under-hood automotive and industrial enclosures without derating. |
| Package | SMC (DO-214AB) - Surface-mount footprint compatible with automated assembly; meets UL 94 V-0. |
| RoHS | Halogen-free, RoHS-compliant (M3 suffix) - Complies with environmental regulations for commercial-grade applications. |
Pinout & Package
SMCJ10A-M3/9AT is housed in the SMC (DO-214AB) package: a low-profile, rectangular surface-mount case with two leads. Polarity is marked by a cathode band on the body; the banded end is the cathode (K), and the opposite end is the anode (A). Leads are matte tin-plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Positive terminal in forward bias; connected to lower-potential side of protected circuit | Completes current path during clamping; must be routed to ground or return rail in unidirectional configuration. |
| Cathode (K) | Negative terminal; marked by band on package body | Connected to higher-potential line (e.g., VIN or signal line); determines direction of clamping action. |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Withstands high-energy transients per IEC 61000-4-5 without degradation, enabling single-device protection for 24 V industrial buses. |
| 17.0 V clamping voltage at 88.2 A | Minimizes voltage overshoot during surge events, protecting 12 V-rated ICs and MOSFETs from latch-up or gate oxide damage. |
| Glass-passivated junction | Ensures stable VBR and low leakage (<5.0 μA at VWM) over time and temperature, critical for long-life embedded systems. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without pre-baking, reducing manufacturing complexity and cost. |
| Halogen-free, RoHS-compliant (M3) | Meets global environmental compliance requirements while maintaining electrical performance and thermal reliability. |
Applications
| Automotive Power Input Protection | Industrial Sensor Signal Line Protection |
|---|---|
Use Scenario: Protecting 12 V power inputs in vehicle infotainment modules against load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery rail and DC-DC converter input. Use Value: Clamps surges up to 1500 W while holding voltage ≤17.0 V, preventing regulator shutdown and preserving system uptime. | Use Scenario: Safeguarding analog outputs of pressure sensors in PLC I/O modules exposed to ESD and inductive switching noise. IC Role / Device Role / Timing Role: TVS placed across signal and ground near connector entry point. Use Value: Sub-1 ns response and 17.0 V clamping prevent ADC saturation and preserve measurement integrity in 4–20 mA loops. |
| Telecom DC Power Entry | Consumer Device USB Port Protection |
Use Scenario: Shielding 48 V PoE-powered equipment front-end from lightning-induced surges on Ethernet cables. IC Role / Device Role / Timing Role: Primary TVS on DC input rail upstream of hot-swap controller. Use Value: 1500 W rating handles multi-kV transients; low incremental surge resistance ensures minimal voltage rise during high-current events. | Use Scenario: Adding secondary-level surge protection on VBUS line of USB-C ports in portable monitors. IC Role / Device Role / Timing Role: Unidirectional TVS between VBUS and GND, after primary ESD array. Use Value: 10 V VWM allows operation across full USB 2.0/3.2 VBUS range; halogen-free M3 suffix supports consumer product sustainability goals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ10A-M3/57T | Lower PPPM (600 W), same VWM/VBR/VC, SMB (DO-214AA) package (smaller footprint, lower thermal mass) | Suitable for space-constrained consumer electronics with lower surge exposure (IEC 61000-4-2 only) | Select when board area is limited and surge threat level is moderate; verify thermal derating at elevated ambient. |
| SMCJ10CA-M3/9AT | Bidirectional variant; identical VWM/VBR/VC/PPPM but symmetrical clamping in both polarities | Required for AC-coupled or floating signal lines (e.g., RS-485, CAN bus) where polarity reversal occurs | Choose for bidirectional signal paths; note that unidirectional SMCJ10A-M3/9AT cannot replace it in AC applications. |
Compared with SMBJ10A-M3/57T, the SMCJ10A-M3/9AT provides 2.5× higher surge energy handling and superior thermal stability; versus SMCJ10CA-M3/9AT, it offers optimized clamping for DC-biased rails but lacks reverse-polarity protection capability.
Availability
SMCJ10A-M3/9AT is available at Aetrix Electronics and suitable for automotive power inputs, industrial sensor interfaces, telecom DC power entry, and consumer USB port protection requiring stable component supply and consistent halogen-free compliance.
Supply support for SMCJ10A-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 is engineered for high-power transient suppression in demanding environments-including automotive, industrial, and telecom-where robustness, repeatable clamping, and long-term stability are non-negotiable.
FAQ
What is the maximum clamping voltage of the SMCJ10A-M3/9AT under rated surge conditions?
The SMCJ10A-M3/9AT has a maximum clamping voltage (VC) of 17.0 V when subjected to its rated peak pulse current (IPPM) of 88.2 A using the standard 10/1000 μs waveform. This value is measured at TJ = 25 °C with specified PCB pad layout (8.0 mm × 8.0 mm copper), and represents the upper limit of voltage seen by protected circuitry during worst-case surge events. The SMCJ10A-M3/9AT maintains this clamping performance across its full operating temperature range.
Is the SMCJ10A-M3/9AT suitable for automotive applications?
Yes, the SMCJ10A-M3/9AT is qualified to AEC-Q101 when ordered with HE3 or HM3 suffixes; however, the M3/9AT variant is commercial-grade and not AEC-Q101 certified. It is widely used in non-safety-critical automotive subsystems such as infotainment power inputs and body control modules where its 1500 W surge rating and –55 °C to +150 °C operating range meet functional requirements. For AEC-Q101 compliance, specify SMCJ10A-HM3/9AT instead of SMCJ10A-M3/9AT.
How does the M3 suffix affect the SMCJ10A-M3/9AT's compliance and performance?
The M3 suffix on SMCJ10A-M3/9AT indicates halogen-free, RoHS-compliant construction with matte tin-plated leads meeting JESD 201 Class 2 whisker resistance. It does not alter electrical parameters-VWM, VBR, VC, and PPPM remain identical to E3-suffix variants-but ensures environmental compliance for export-sensitive markets and aligns with corporate sustainability mandates. The SMCJ10A-M3/9AT retains full compatibility with lead-free reflow processes and delivers identical transient suppression performance as its E3 counterpart.
Can the SMCJ10A-M3/9AT be used in bidirectional signal protection?
No, the SMCJ10A-M3/9AT is a unidirectional TVS diode and must not be used for bidirectional signal lines such as RS-485, CAN, or AC-coupled audio. Its cathode band designates polarity, and reverse-bias conduction is not characterized for symmetrical clamping. For bidirectional protection, use the SMCJ10CA-M3/9AT, which shares the same package and power rating but provides matched clamping in both directions. Substituting SMCJ10A-M3/9AT in place of SMCJ10CA-M3/9AT will result in improper protection during negative transients.
What is the recommended PCB layout for optimal thermal and electrical performance of the SMCJ10A-M3/9AT?
Vishay specifies mounting the SMCJ10A-M3/9AT on minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal to achieve rated 1500 W pulse power and maintain RθJA = 75 °C/W. Thermal vias under pads and internal copper planes improve heat spreading. Avoid narrow traces between the SMCJ10A-M3/9AT and protected node-keep them short and wide to minimize inductance and ensure sub-1 ns response. The SMCJ10A-M3/9AT must be placed as close as possible to the connector or IC input being protected.
SMCJ10A-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):
- 10V
- Voltage - Breakdown (Min):
- 11.1V
- Voltage - Clamping (Max) @ Ipp:
- 17V
- Current - Peak Pulse (10/1000µs):
- 88.2A
- 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)
SMCJ10A-M3/9AT FAQ
1.How can I place an order for SMCJ10A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ10A-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 SMCJ10A-M3/9AT reliable?
The price and inventory of SMCJ10A-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 SMCJ10A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ10A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ10A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ10A-M3/9AT?
SMCJ10A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ10A-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 SMCJ10A-M3/9AT?
For technical support, including SMCJ10A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ10A-M3/9AT requirements.
6.How does Aetrix verify that SMCJ10A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ10A-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 SMCJ10A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ10A-M3/9AT?
All SMCJ10A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ10A-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 SMCJ10A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ10A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ10A-M3/9AT Tags
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