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Vishay General Semiconductor - Diodes Division SMCJ5.0CA-M3/9AT
- Part No.:
- SMCJ5.0CA-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ5.0CA-M3/9AT.pdf
- Description:
- TVS DIODE 5VWM 9.2VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,598
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Product details
Overview
SMCJ5.0CA-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 5.0 V standoff voltage (VWM), 7.25 V maximum breakdown voltage (VBR), 9.2 V clamping voltage (VC) at 163 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - deployed on power rails and signal lines in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the SMCJ5.0CA-M3/9AT datasheet, SMCJ5.0CA-M3/9AT pinout, SMCJ5.0CA-M3/9AT application, or SMCJ5.0CA-M3/9AT equivalent, key selection criteria include bidirectional clamping symmetry, low clamping ratio (VC/VWM = 1.84), halogen-free RoHS compliance (M3 suffix), AEC-Q101 qualification readiness, and compatibility with automated SMT placement on 8 mm × 8 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, delivering identical clamping performance regardless of transient polarity - critical for protecting AC-coupled or floating signal paths. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1000 µA at VWM), while the low incremental surge resistance enables rapid energy diversion during ESD or lightning-induced surges.
The device meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak temperature tolerance and exhibits a thermal resistance of 75 °C/W (junction-to-ambient) on standard PCB pads. Its 150 °C maximum junction temperature supports operation in under-hood automotive environments and high-power industrial enclosures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 5.0 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 5 V logic and USB power rails. |
| VBR (max) | 7.25 V - Guaranteed minimum breakdown threshold under 10 mA test current; ensures reliable triggering above normal operating voltage. |
| VC @ IPPM | 9.2 V - Clamped voltage at 163 A peak pulse current; limits downstream stress to <9.2 V during 1500 W transients. |
| PPPM | 1500 W - Peak pulse power handling with 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 surge immunity (4 kV line-earth). |
| Package | SMC (DO-214AB) - Surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height; optimized for high-current thermal dissipation and automated placement. |
| Compliance | Halogen-free, RoHS-compliant (M3 suffix); qualified per AEC-Q101 when ordered as HM3 variant - suitable for automotive-grade designs. |
Pinout & Package
SMCJ5.0CA-M3/9AT uses the SMC (DO-214AB) package: a surface-mount, bidirectional two-terminal device with no polarity marking. Both terminals are electrically symmetrical; neither is designated anode or cathode. The package features matte tin-plated leads solderable per J-STD-002 and JESD 22-B102, and meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Transient input/output node | Connects to protected line (e.g., CAN_H or RS-485 A); conducts surge current bidirectionally to ground or rail. |
| Terminal 2 | Transient input/output node | Connects to reference plane (ground or complementary line); completes symmetrical clamping path with Terminal 1. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Identical VBR, VC, and IPPM in both directions - eliminates need for polarity-aware layout in differential or AC signal protection. |
| Low clamping ratio | VC/VWM = 1.84 - minimizes voltage overshoot during transients, preserving margin for 5 V ICs with 10 V absolute maximum ratings. |
| High surge current capability | 163 A IPPM with 10/1000 µs waveform - withstands repetitive ISO 7637-2 Pulse 5a/b surges in 12 V automotive systems. |
| Automated assembly support | MSL Level 1 rating and matte tin terminations - compatible with standard lead-free reflow profiles without moisture sensitivity concerns. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus or 5 V supply lines in body control modules against load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between power rail and chassis ground to shunt transients exceeding 5.0 V. Use Value: Limits rail voltage to ≤9.2 V during 1500 W surges, preventing latch-up or damage to microcontrollers and transceivers rated for 10 V max. | Use Scenario: Safeguarding analog outputs (e.g., 4–20 mA transmitter lines) in PLC I/O modules exposed to field wiring surges. IC Role / Device Role / Timing Role: Transient suppressor connected across output terminals to clamp induced spikes before they reach precision DACs or op-amps. Use Value: Maintains signal integrity by clamping transients within 1.2 ns response time, avoiding offset drift or calibration loss in 16-bit measurement systems. |
| USB 2.0 Data Line Protection | DC-DC Converter Input Filtering |
Use Scenario: ESD and surge protection for D+ and D− lines in automotive infotainment USB ports compliant with IEC 61000-4-2 Level 4. IC Role / Device Role / Timing Role: Low-capacitance bidirectional TVS placed differential across data pair to suppress ±15 kV contact ESD without distorting 480 Mbps signaling. Use Value: Junction capacitance <100 pF at 0 V bias ensures minimal signal rise-time degradation while providing full IEC 61000-4-5 surge immunity. | Use Scenario: Input-side transient suppression for 5 V buck converters powering FPGA core supplies in industrial gateways. IC Role / Device Role / Timing Role: Primary overvoltage clamp on converter input rail, coordinated with ceramic bulk capacitors to absorb fast-rising switching noise and external surges. Use Value: Withstands repeated 10/1000 µs transients up to 1500 W without parametric shift, extending converter lifetime in harsh factory-floor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC5.0B-TB-E3/9AT | Unidirectional; 5.0 V VWM; 10.8 V VC @ 139 A; lower PPPM (1000 W) | Requires polarity-aware placement; unsuitable for AC or floating lines | Select only when unidirectional clamping suffices and board space allows larger SOD-123FL footprint. |
| TPSMD5.0A-Q | Automotive-grade (AEC-Q101); same VWM/VC specs; tighter VBR tolerance (6.4–7.07 V) | Qualified for safety-critical zones (e.g., ADAS power domains); higher cost | Choose when formal AEC-Q101 certification is mandatory and M3-level halogen-free compliance is insufficient. |
Compared with SAC5.0B-TB-E3/9AT and TPSMD5.0A-Q, the SMCJ5.0CA-M3/9AT uniquely delivers bidirectional symmetry in a compact SMC package with 1500 W rating - making it optimal for space-constrained, polarity-agnostic protection where automotive qualification is optional but halogen-free compliance is required.
Availability
SMCJ5.0CA-M3/9AT is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface hardening, and USB port surge protection requiring stable component supply and halogen-free compliance.
Supply support for SMCJ5.0CA-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 qualification.
The SMCJ series is engineered for high-energy transient suppression in demanding environments - targeting automotive power distribution, industrial automation I/O, and telecom infrastructure where robustness against ISO 7637 and IEC 61000-4-5 threats is essential.
FAQ
What is the clamping voltage of SMCJ5.0CA-M3/9AT at its rated peak pulse current?
The SMCJ5.0CA-M3/9AT has a maximum clamping voltage (VC) of 9.2 V at 163 A peak pulse current (IPPM) with a 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and reflects the actual voltage seen by downstream circuitry during worst-case surge events. The SMCJ5.0CA-M3/9AT maintains this clamping performance symmetrically in both directions due to its bidirectional construction.
Is SMCJ5.0CA-M3/9AT suitable for automotive applications?
Yes - the SMCJ5.0CA-M3/9AT is halogen-free and RoHS-compliant (M3 suffix), and its base family is AEC-Q101 qualified when ordered with HM3 suffix (e.g., SMCJ5.0CAHM3_A/I). While the M3 version itself is not certified, its electrical and thermal specifications - including 150 °C TJ max, MSL Level 1, and 1500 W surge rating - align with automotive subsystem requirements such as body electronics and infotainment power rails. For formal qualification, specify the HM3 variant.
How does the bidirectional nature of SMCJ5.0CA-M3/9AT affect PCB layout?
The SMCJ5.0CA-M3/9AT has no polarity marking and identical electrical behavior in both directions, eliminating orientation constraints during placement. Unlike unidirectional TVS diodes, it requires no cathode band alignment - simplifying layout, reducing assembly errors, and enabling use across differential pairs (e.g., CAN, RS-485) or AC-coupled signals. The SMCJ5.0CA-M3/9AT must still be mounted on minimum 8.0 mm × 8.0 mm copper pads per terminal to achieve rated PPPM and thermal performance.
What is the standoff voltage and why is it critical for SMCJ5.0CA-M3/9AT selection?
The standoff voltage (VWM) of the SMCJ5.0CA-M3/9AT is 5.0 V - the maximum DC or continuous reverse voltage the device will block without entering avalanche conduction. This parameter is critical because it must exceed the normal operating voltage of the protected line (e.g., 5 V logic rails) while leaving sufficient margin below the clamping voltage (9.2 V). Selecting a VWM too close to operating voltage risks leakage-induced heating; too high reduces surge margin. The SMCJ5.0CA-M3/9AT's 5.0 V VWM makes it ideal for standard 5 V systems.
Does SMCJ5.0CA-M3/9AT meet industry surge immunity standards?
Yes - the SMCJ5.0CA-M3/9AT supports compliance with IEC 61000-4-5 (surge immunity) Level 4 (4 kV line-earth, 2 kV line-line) and ISO 7637-2 Pulse 5a/b (load dump) when implemented with proper PCB layout (e.g., short traces, adequate ground plane, 8 mm × 8 mm pads). Its 1500 W PPPM and 163 A IPPM directly map to these test waveforms. The SMCJ5.0CA-M3/9AT also meets IEC 61000-4-2 ESD immunity when used with appropriate series impedance on data lines.
SMCJ5.0CA-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):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- 9.2V
- Current - Peak Pulse (10/1000µs):
- 163A
- 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)
SMCJ5.0CA-M3/9AT FAQ
1.How can I place an order for SMCJ5.0CA-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ5.0CA-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 SMCJ5.0CA-M3/9AT reliable?
The price and inventory of SMCJ5.0CA-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 SMCJ5.0CA-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ5.0CA-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ5.0CA-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ5.0CA-M3/9AT?
SMCJ5.0CA-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ5.0CA-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 SMCJ5.0CA-M3/9AT?
For technical support, including SMCJ5.0CA-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ5.0CA-M3/9AT requirements.
6.How does Aetrix verify that SMCJ5.0CA-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ5.0CA-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 SMCJ5.0CA-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ5.0CA-M3/9AT?
All SMCJ5.0CA-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ5.0CA-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 SMCJ5.0CA-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ5.0CA-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ5.0CA-M3/9AT Tags
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