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Vishay General Semiconductor - Diodes Division SMCJ13CA-M3/9AT
- Part No.:
- SMCJ13CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ13CA-M3/9AT.pdf
- Description:
- TVS DIODE 13VWM 21.5VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,458
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Product details
Overview
SMCJ13CA-M3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of sensitive electronics. 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 (10/1000 µs waveform), commonly deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCJ13CA-M3/9AT datasheet, SMCJ13CA-M3/9AT pinout, SMCJ13CA-M3/9AT application, or SMCJ13CA-M3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, low incremental surge resistance, AEC-Q101 qualification eligibility (via HM3 suffix), and compatibility with automated SMT placement on 8 mm × 8 mm copper pads.
Technical Context
This TVS operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (>1 MΩ leakage at 13 V), but triggers into low-impedance conduction when transient voltage exceeds its breakdown range (14.4–15.9 V at 1 mA). Its glass-passivated junction ensures stable avalanche characteristics and fast response (<1 ns).
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 75 °C/W (on recommended pad layout) and RθJL = 15 °C/W, enabling reliable operation in thermally constrained automotive and industrial environments without active cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 13 V - Maximum continuous reverse working voltage before significant leakage; defines safe operating margin below clamping threshold. |
| VBR (Breakdown Voltage) | 14.4–15.9 V at 1 mA - Confirmed avalanche initiation range; ensures predictable turn-on during transients. |
| VC (Clamping Voltage) | 21.5 V at 69.8 A (10/1000 µs) - Peak voltage seen by protected circuit during worst-case surge; critical for IC-level survivability. |
| PPPM (Peak Pulse Power) | 1500 W - Energy-handling capacity for standardized lightning/surge waveforms; validates robustness per IEC 61000-4-5 Level 4. |
| IPPM (Peak Pulse Current) | 69.8 A - Maximum non-repetitive surge current the device can safely divert without degradation. |
| TJ max. | +150 °C - Enables use in under-hood automotive locations and high-ambient industrial enclosures. |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; compatible with IPC-7351B standard land patterns. |
Pinout & Package
SMCJ13CA-M3/9AT uses the SMC (DO-214AB) package: a two-terminal surface-mount device with no polarity marking (bidirectional configuration). Terminals are matte tin-plated leads, solderable per J-STD-002 and JESD 22-B102, and meet JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Acts as cathode during positive transients and anode during negative transients; symmetric conduction enables dual-polarity protection without external polarity management. |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in CA devices; terminals are interchangeable-no marking required per datasheet Note on polarity. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM performance in both directions eliminates need for orientation-aware layout or external bridge configurations. |
| Low incremental surge resistance | Enables tighter clamping (21.5 V @ 69.8 A) versus competing 13 V TVS parts, reducing stress on downstream MOSFETs and interface ICs. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for automotive and industrial OEMs without sacrificing surge rating or thermal performance. |
| MSL Level 1 (260 °C peak reflow) | Supports single-pass lead-free reflow assembly without moisture-related delamination risk-no baking required prior to SMT. |
| AEC-Q101 qualification pathway | Base P/NHM3_X variant (e.g., SMCJ13CA-HM3_A/I) is AEC-Q101 qualified; this M3/9AT variant shares identical die and construction, enabling qualification traceability. |
Applications
| Automotive Body Control Module (BCM) | Industrial CAN Transceiver Protection |
|---|---|
Use Scenario: Protecting 12 V supply rail and LIN bus lines in BCM against load dump (ISO 7637-2 Pulse 5a) and ESD events (IEC 61000-4-2 ±15 kV contact). IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at power entry and signal connector interface to clamp surges before reaching MCU and driver ICs. Use Value: Clamps 12 V rail to ≤21.5 V during 100 A/10 ms load dump transients, preventing brownout resets and gate oxide damage in protected FETs and regulators. | Use Scenario: Safeguarding isolated CAN FD transceivers (e.g., ISO1050) on factory automation nodes exposed to motor drive noise and ground bounce. IC Role / Device Role / Timing Role: Bidirectional TVS across CANH-CANL differential pair and to chassis ground, suppressing common-mode transients up to ±300 V. Use Value: Maintains <100 nA leakage at 13 V, preserving bus bias integrity while limiting differential clamping to 21.5 V-within ISO 11898-2 fault tolerance limits. |
| Consumer Smart Meter Power Input | Telecom PoE+ Data Line Protection |
Use Scenario: Securing AC/DC converter input stage in smart electricity meters subjected to utility-side surges (ANSI C62.41 Cat. III). IC Role / Device Role / Timing Role: Primary front-end TVS on rectified DC bus, coordinated with MOV and fuse for staged overvoltage defense. Use Value: Withstands 1500 W peak pulses without derating at 85 °C ambient, ensuring long-term reliability in sealed outdoor meter enclosures. | Use Scenario: Protecting Ethernet PHY data pairs (10/100/1000BASE-T) in PoE+ (IEEE 802.3at) powered devices against induced lightning surges. IC Role / Device Role / Timing Role: Bidirectional TVS on each twisted pair, placed before magnetics and PHY IC to limit voltage excursion during surge coupling. Use Value: 21.5 V clamping prevents PHY latch-up during 10/1000 µs transients while maintaining <0.5 pF junction capacitance (per Fig. 4), avoiding signal integrity degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC13CA | Lower PPPM (600 W), same VWM/VC, smaller SMA package (DO-214AC) | Not suitable for >600 W surge environments (e.g., automotive load dump); limited thermal mass reduces repetitive surge endurance. | Select only for space-constrained consumer applications where 1500 W rating is unnecessary. |
| SMCJ13A-M3/9AT | Unidirectional version; includes cathode band marking and forward voltage drop (VF = 3.5 V @ 100 A) | Requires correct polarity placement; unsuitable for AC-coupled or floating signal lines where bidirectional clamping is mandatory. | Choose only when protecting DC-biased unidirectional paths (e.g., 5 V USB VBUS) where polarity is fixed and forward conduction must be blocked. |
Compared with SAC13CA and SMCJ13A-M3/9AT, the SMCJ13CA-M3/9AT uniquely delivers 1500 W bidirectional clamping in SMC package-enabling single-device protection of differential buses, AC inputs, and polarity-agnostic power rails without layout constraints or performance trade-offs.
Availability
SMCJ13CA-M3/9AT is available at Aetrix Electronics and suitable for automotive body control modules, industrial CAN networks, smart meter power inputs, and telecom PoE+ data line protection requiring stable component supply and halogen-free compliance.
Supply support for SMCJ13CA-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, TVS, MOSFETs, and optoelectronics with emphasis on high-reliability, automotive-grade, and industrial solutions.
The SMCJ series is engineered specifically for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 readiness, and consistent clamping performance are mandatory.
FAQ
What is the clamping voltage of SMCJ13CA-M3/9AT at its rated peak pulse current?
The SMCJ13CA-M3/9AT has a maximum clamping voltage (VC) of 21.5 V when subjected to its rated 69.8 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured across the device terminals during surge conduction and represents the upper voltage limit imposed on the protected circuit during worst-case transient events. The SMCJ13CA-M3/9AT maintains this clamping performance symmetrically in both directions due to its bidirectional design.
Is SMCJ13CA-M3/9AT AEC-Q101 qualified?
The SMCJ13CA-M3/9AT itself carries the halogen-free, RoHS-compliant M3 suffix but is not individually AEC-Q101 certified. However, Vishay offers the functionally identical SMCJ13CA-HM3_A/I variant, which is fully AEC-Q101 qualified and shares the same die, package, and electrical specifications. Engineers designing for automotive applications can migrate to the HM3-suffixed part using the same layout and bill of materials, with full qualification documentation available from Vishay.
How does the SMCJ13CA-M3/9AT differ from the unidirectional SMCJ13A-M3/9AT?
The SMCJ13CA-M3/9AT is bidirectional with symmetrical breakdown and clamping in both polarities and no polarity marking, whereas the SMCJ13A-M3/9AT is unidirectional, features a cathode band, and conducts forward current (VF = 3.5 V @ 100 A). The SMCJ13CA-M3/9AT is required for AC-coupled, floating, or differential signal protection (e.g., CAN, RS-485), while the unidirectional version suits DC-biased rails where reverse conduction must be blocked. Both share identical VWM, VC, and PPPM ratings.
What PCB pad layout is recommended for optimal thermal and surge performance of SMCJ13CA-M3/9AT?
Vishay specifies a minimum 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pad area per terminal for the SMCJ13CA-M3/9AT to achieve rated 1500 W pulse power and thermal resistance (RθJA = 75 °C/W). Use internal copper planes connected via multiple thermal vias to enhance heat dissipation. Avoid narrow traces between pads and ensure solder mask defined pads to maximize wetting. The SMCJ13CA-M3/9AT's SMC (DO-214AB) outline requires precise alignment to IPC-7351B SMC_775X622 footprint for reliable reflow yield.
Can SMCJ13CA-M3/9AT be used in parallel to increase surge current handling?
No-SMCJ13CA-M3/9AT should not be paralleled for increased IPPM. Minor parametric variations in VBR (14.4–15.9 V) cause uneven current sharing during transients, risking thermal runaway in the lower-breakdown unit. For higher energy requirements, select a single higher-rated device (e.g., SMCJ15CA) or implement staged protection with upstream current-limiting elements. The SMCJ13CA-M3/9AT is characterized and tested as a standalone 1500 W suppressor; parallel operation voids its specified performance guarantees.
SMCJ13CA-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:
- -
- Bidirectional Channels:
- 1
- 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)
SMCJ13CA-M3/9AT FAQ
1.How can I place an order for SMCJ13CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ13CA-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 SMCJ13CA-M3/9AT reliable?
The price and inventory of SMCJ13CA-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 SMCJ13CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ13CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ13CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ13CA-M3/9AT?
SMCJ13CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ13CA-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 SMCJ13CA-M3/9AT?
For technical support, including SMCJ13CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ13CA-M3/9AT requirements.
6.How does Aetrix verify that SMCJ13CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ13CA-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 SMCJ13CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ13CA-M3/9AT?
All SMCJ13CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ13CA-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 SMCJ13CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ13CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ13CA-M3/9AT Tags
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