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Vishay General Semiconductor - Diodes Division SMCJ13A-M3/9AT
- Part No.:
- SMCJ13A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ13A-M3/9AT.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,123
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Product details
Overview
SMCJ13A-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 13 V standoff voltage (VWM), 21.5 V maximum clamping voltage (VC) at 69.8 A peak pulse current (IPPM), and 1500 W peak pulse power rating with 10/1000 μs waveform. Used to safeguard MOSFETs, ICs, and sensor interfaces against inductive switching transients and ESD in automotive and industrial control systems.
For engineers reviewing the SMCJ13A-M3/9AT datasheet, SMCJ13A-M3/9AT pinout, SMCJ13A-M3/9AT application, or SMCJ13A-M3/9AT equivalent, key selection criteria include its 13 V stand-off voltage, 21.5 V clamping performance under 69.8 A surge, unidirectional polarity with cathode band marking, halogen-free RoHS-compliant M3 termination, and suitability for automated SMT placement on PCBs requiring IEC 61000-4-5 level 4 compliance.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds its breakdown threshold (14.4–15.9 V at 1 mA), it rapidly avalanches to limit transient energy across protected nodes. Its low incremental surge resistance and fast response time (<1 ns) enable effective suppression of sub-microsecond spikes induced by relay switching or motor commutation.
The device is rated for continuous operation from –55 °C to +150 °C junction temperature, with thermal resistance of 75 °C/W (junction-to-ambient) on standard 8 mm × 8 mm copper pads. Its SMC package supports high-power dissipation while meeting J-STD-020 MSL Level 1 reflow requirements up to 260 °C peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 13 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V systems. |
| VBR min/max | 14.4 V / 15.9 V at 1 mA - Verified avalanche onset range ensures consistent turn-on behavior across production lots. |
| VC @ IPPM | 21.5 V at 69.8 A - Clamped voltage during full 1500 W transient; determines maximum stress on downstream ICs. |
| IPPM | 69.8 A - Peak surge current capability with 10/1000 μs waveform; validates protection against IEC 61000-4-5 Combination Wave. |
| PPPM | 1500 W - Peak pulse power handling capacity; enables single-device protection for medium-energy transients. |
| TJ max | +150 °C - Maximum junction temperature rating supports operation in under-hood automotive and industrial enclosures. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 8.0 mm × 8.0 mm thermal pad footprint for reliable heat dissipation. |
Pinout & Package
SMCJ13A-M3/9AT uses the SMC (DO-214AB) package: a molded plastic case with two coplanar matte tin-plated leads, 0.220–0.246 inch wide body, 0.305–0.320 inch length, and cathode band marking on the anode side. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal for rated power derating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VREV > VBR. |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes low-inductance shunt path for transient energy diversion. |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant termination | M3 suffix confirms lead finish meets JEDEC JESD201 Class 2 whisker resistance and environmental compliance for automotive supply chains. |
| Low incremental surge resistance | Enables tighter clamping (21.5 V at 69.8 A) versus competitive 13 V TVS devices, reducing voltage overshoot on protected ICs. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking; compatible with high-volume SMT assembly lines. |
| Glass passivated junction | Provides stable breakdown characteristics and long-term reliability under repeated surge stress, critical for industrial field deployments. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Shunt clamping element placed between power input and ground, triggered within nanoseconds upon overvoltage detection. Use Value: Limits transient voltage to ≤21.5 V, preventing latch-up or gate oxide damage in microcontrollers and CAN transceivers. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS placed across sensor output and ground to absorb ESD and cable discharge events. Use Value: Maintains signal integrity below 13 V DC bias while clamping 8 kV contact ESD to <22 V, preserving ADC accuracy. |
| DC Motor Drive Gate Protection | Telecom Power Supply Input Stage |
Use Scenario: Shielding high-side N-channel MOSFET gates from inductive kickback during PWM switching in BLDC drivers. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to gate driver supply rail, conducting only during negative-going transients. Use Value: Prevents gate-source overvoltage beyond ±20 V, avoiding unintended turn-on or oxide degradation in 600 V MOSFETs. | Use Scenario: Front-end surge suppression on 48 V telecom rectifier outputs feeding base station backplanes. IC Role / Device Role / Timing Role: Primary-level TVS in series with fuse and MOV, absorbing residual surges after coarse filtering. Use Value: Handles 1500 W pulses without degradation, enabling compliance with GR-1089-CORE lightning surge immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ13A-M3/57T | Lower PPPM (600 W), smaller SMB package, same VWM/VC specs | Reduced surge handling; suitable only for low-energy signal-line protection | Select when board space is constrained and peak surge current remains <28 A. |
| SMCJ13CA-M3/9AT | Bidirectional variant with identical VWM, VBR, and VC; symmetric clamping in both polarities | Required for AC-coupled or floating signal paths where polarity reversal may occur | Choose for RS-485, CAN FD, or Ethernet PHY protection where bidirectional transients dominate. |
Compared with SMBJ13A-M3/57T and SMCJ13CA-M3/9AT, the SMCJ13A-M3/9AT delivers higher surge robustness (1500 W vs. 600 W) in the same SMC footprint, while offering unidirectional optimization for DC power rails-making it optimal for automotive body control modules and industrial 24 V PLC inputs where polarity is fixed and energy levels are elevated.
Availability
SMCJ13A-M3/9AT is available at Aetrix Electronics and suitable for automotive electronics, industrial motor drives, and telecom power supply designs requiring stable component supply, halogen-free compliance, and AEC-Q101-qualified alternatives.
Supply support for SMCJ13A-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, power efficiency, and automotive-grade qualification.
The SMCJ series is engineered for high-energy transient suppression in harsh environments, targeting design-in for automotive power distribution, industrial automation, and infrastructure equipment where sustained surge immunity is mission-critical.
FAQ
What is the maximum clamping voltage of SMCJ13A-M3/9AT under rated surge conditions?
The SMCJ13A-M3/9AT has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated 69.8 A peak pulse current (IPPM) with a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and guarantees that protected circuitry will not experience reverse voltage exceeding 21.5 V during standardized surge events. The SMCJ13A-M3/9AT maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C).
Is SMCJ13A-M3/9AT suitable for automotive applications requiring AEC-Q101 qualification?
No, the SMCJ13A-M3/9AT is not AEC-Q101 qualified. It carries the M3 suffix indicating halogen-free, RoHS-compliant commercial-grade construction. For automotive use, select the AEC-Q101-qualified variant SMCJ13A-HM3/9AT, which shares identical electrical specifications but undergoes additional stress testing per AEC-Q101 Rev D. The SMCJ13A-M3/9AT remains appropriate for non-safety-critical industrial and consumer applications where qualification is not mandated.
How does the SMCJ13A-M3/9AT differ from the SMBJ13A-M3/57T in terms of surge handling capability?
The SMCJ13A-M3/9AT delivers 1500 W peak pulse power (PPPM) with a 10/1000 μs waveform, whereas the SMBJ13A-M3/57T is rated for only 600 W. This difference stems from their package sizes: SMC (DO-214AB) offers superior thermal mass and lower junction-to-ambient resistance (75 °C/W vs. ~100 °C/W for SMB), enabling higher surge current (69.8 A vs. 27.9 A). The SMCJ13A-M3/9AT thus provides stronger protection for high-energy transients in power rails, while the SMBJ13A-M3/57T suits compact signal-line designs.
What is the meaning of the "M3" and "9AT" suffixes in SMCJ13A-M3/9AT?
The "M3" suffix denotes halogen-free, RoHS-compliant matte tin plating meeting JESD201 Class 2 whisker resistance, while "9AT" specifies packaging in a 13-inch diameter plastic tape-and-reel format containing 3500 units. This configuration supports high-speed automated pick-and-place assembly and complies with IPC-7351B land pattern standards for SMC (DO-214AB) footprints. The SMCJ13A-M3/9AT is fully compatible with standard reflow profiles up to 260 °C peak temperature.
Can SMCJ13A-M3/9AT be used in bidirectional signal protection applications?
No, the SMCJ13A-M3/9AT is a unidirectional TVS diode, identifiable by its cathode band marking and asymmetric I-V characteristics. For bidirectional protection-such as on RS-485, CAN, or AC-coupled sensor lines-the bidirectional variant SMCJ13CA-M3/9AT must be used. That part exhibits matched clamping in both polarities with identical VWM (13 V), VBR, and VC values. Using the unidirectional SMCJ13A-M3/9AT in bidirectional circuits risks failure during positive-going transients.
SMCJ13A-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):
- 13V
- Voltage - Breakdown (Min):
- 14.4V
- Voltage - Clamping (Max) @ Ipp:
- 21.5V
- Current - Peak Pulse (10/1000µs):
- 69.8A
- 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)
SMCJ13A-M3/9AT FAQ
1.How can I place an order for SMCJ13A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ13A-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 SMCJ13A-M3/9AT reliable?
The price and inventory of SMCJ13A-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 SMCJ13A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ13A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ13A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ13A-M3/9AT?
SMCJ13A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ13A-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 SMCJ13A-M3/9AT?
For technical support, including SMCJ13A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ13A-M3/9AT requirements.
6.How does Aetrix verify that SMCJ13A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ13A-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 SMCJ13A-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ13A-M3/9AT?
All SMCJ13A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ13A-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 SMCJ13A-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ13A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ13A-M3/9AT Tags
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