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Vishay General Semiconductor - Diodes Division SMCJ188CA-M3/57T
- Part No.:
- SMCJ188CA-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ188CA-M3/57T.pdf
- Description:
- TVS DIODE 188VWM DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,463
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Product details
Overview
SMCJ188CA-M3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, rated for 188 V standoff voltage (VWM), 328 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform. It provides robust overvoltage protection for automotive power lines and industrial sensor interfaces.
For engineers reviewing the SMCJ188CA-M3/57T datasheet, SMCJ188CA-M3/57T pinout, SMCJ188CA-M3/57T application, or SMCJ188CA-M3/57T equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification eligibility (via HM3 suffix), low incremental surge resistance, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients: when reverse voltage exceeds its breakdown range (209–231 V at 1 mA test current), it enters avalanche conduction to clamp the line to ≤328 V while diverting up to 328 A. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity concerns in AC-coupled or floating signal paths.
Thermally, it features RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation up to TJ = +150 °C. The glass-passivated junction and halogen-free M3 construction meet JESD201 Class 2 whisker resistance and UL 94 V-0 flammability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 209 V / 231 V at 1 mA - guaranteed avalanche onset window defining clamping threshold precision |
| VC @ IPPM | 328 V - clamped voltage under full 328 A 10/1000 µs surge, directly determining protected circuit's max stress level |
| PPPM | 1500 W - peak transient power handling capacity, validated per IEC 61000-4-5 Level 4 compliance margin |
| ID @ VWM | 1.0 µA - leakage current at 188 V, ensuring minimal standby power loss in high-impedance monitoring circuits |
| TJ max | +150 °C - maximum junction temperature, supporting under-hood automotive deployment without derating |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 7.75 mm × 6.22 mm footprint and 2.62 mm height |
Pinout & Package
SMCJ188CA-M3/57T uses the standard SMC (DO-214AB) package: a two-terminal, bidirectional device with no polarity marking. Terminals are matte tin-plated leads compatible with J-STD-002 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Transient return path (bidirectional) | Completes low-inductance surge current loop during either polarity overvoltage event |
| Cathode | Transient return path (bidirectional) | Electrically identical to Anode in CA devices; no functional distinction-both terminals symmetric |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC lines, differential buses, or floating sensors without polarity constraints |
| 1500 W peak pulse power | Supports IEC 61000-4-5 surge immunity up to 4 kV (line-earth) in properly designed PCB layouts |
| Halogen-free M3 construction | Meets RoHS and JEDEC J-STD-208 environmental compliance for automotive and industrial end-equipment |
| MSL Level 1 rating | Allows unlimited floor life and reflow at 260 °C peak, eliminating bake requirements prior to assembly |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V CAN bus power rails against load dump and jump-start transients in commercial vehicles. IC Role / Device Role / Timing Role: Standoff voltage limiter and energy shunt, clamping surges above 188 V to <328 V within nanoseconds. Use Value: Prevents damage to downstream DC-DC converters and CAN transceivers during ISO 16750-2 load dump events (up to 35 V, 400 ms). | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors connected to PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional voltage clamp on 0–10 V or 4–20 mA signal lines exposed to ESD and inductive switching noise. Use Value: Maintains signal integrity by limiting transients to <328 V while adding <1 pF capacitance, avoiding bandwidth degradation. |
| Telecom AC-DC Adapter Input | Motor Drive Gate Driver Protection |
Use Scenario: Secondary-side overvoltage suppression on 48 V telecom rectifier outputs feeding PoE injectors. IC Role / Device Role / Timing Role: Fast-response crowbar protecting downstream MOSFETs and controllers from reflected lightning surges. Use Value: Clamps 10/1000 µs surges to 328 V with <1.5 ns response, meeting GR-1089-CORE Level 3 telecom immunity requirements. | Use Scenario: Shielding isolated gate drivers in 3-phase inverters from Miller-induced dv/dt spikes during IGBT switching. IC Role / Device Role / Timing Role: Bidirectional transient clamp across gate-emitter terminals to prevent false turn-on/turn-off. Use Value: Limits gate voltage excursions to ±328 V, preserving driver IC reliability without adding propagation delay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SAC188CA | Same VWM (188 V) and PPPM (1500 W), but in smaller SMA package (DO-214AC); lower IPPM (280 A) | Limited thermal mass reduces sustained surge capability; unsuitable for repeated load dump events | Select when board space is constrained and surge duty cycle is low |
| SMCJ188A-M3/57T | Unidirectional version with identical VWM, PPPM, and package; includes cathode band marking | Requires correct polarity orientation; not usable on AC or floating nodes | Select only for DC-biased lines where polarity is fixed and known |
Compared with SAC188CA and SMCJ188A-M3/57T, the SMCJ188CA-M3/57T uniquely delivers bidirectional 1500 W clamping in the thermally robust SMC package-enabling universal placement on uncontrolled-polarity lines without redesigning layout or verifying orientation.
Availability
SMCJ188CA-M3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interface design, and telecom infrastructure requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ188CA-M3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and AEC-Q qualification.
The SMCJ series is engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom systems where failure due to voltage surges must be eliminated.
FAQ
What is the breakdown voltage range of SMCJ188CA-M3/57T?
The SMCJ188CA-M3/57T has a guaranteed breakdown voltage (VBR) range of 209 V to 231 V at 1 mA test current, measured in both directions due to its bidirectional construction. This range defines the minimum and maximum voltage at which the device begins avalanche conduction and is critical for ensuring consistent clamping performance across production lots.
Is SMCJ188CA-M3/57T qualified for automotive use?
The SMCJ188CA-M3/57T itself is halogen-free and RoHS-compliant, but AEC-Q101 qualification requires the HM3 suffix variant (e.g., SMCJ188CAHM3_A/H). The M3 suffix indicates material compliance only; full automotive qualification demands explicit HM3 ordering code and associated test documentation from Vishay.
How does the clamping voltage VC relate to system protection with SMCJ188CA-M3/57T?
The SMCJ188CA-M3/57T clamps to a maximum of 328 V at its rated 328 A peak pulse current (10/1000 µs). This VC value must be below the absolute maximum voltage rating of downstream components-such as MOSFETs or regulators-to ensure survivability during surge events. Layout inductance directly impacts actual clamping performance.
Can SMCJ188CA-M3/57T replace unidirectional TVS diodes like SMCJ188A-M3/57T?
No-SMCJ188CA-M3/57T is bidirectional and lacks polarity marking, while SMCJ188A-M3/57T is unidirectional with a cathode band. Substituting them requires verifying that the circuit can tolerate symmetrical clamping and does not rely on DC bias polarity. Physical fit is identical, but electrical behavior differs fundamentally.
What is the thermal resistance specification for SMCJ188CA-M3/57T?
The SMCJ188CA-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on the recommended 8.0 mm × 8.0 mm copper pad per terminal, and a junction-to-lead resistance (RθJL) of 15 °C/W. These values determine safe power dissipation limits and temperature rise under continuous or repetitive surge conditions.
SMCJ188CA-M3/57T 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):
- 188V
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- 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)
SMCJ188CA-M3/57T FAQ
1.How can I place an order for SMCJ188CA-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ188CA-M3/57T 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 SMCJ188CA-M3/57T reliable?
The price and inventory of SMCJ188CA-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ188CA-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ188CA-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ188CA-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ188CA-M3/57T?
SMCJ188CA-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ188CA-M3/57T 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 SMCJ188CA-M3/57T?
For technical support, including SMCJ188CA-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ188CA-M3/57T requirements.
6.How does Aetrix verify that SMCJ188CA-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ188CA-M3/57T 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 SMCJ188CA-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ188CA-M3/57T?
All SMCJ188CA-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ188CA-M3/57T, 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 SMCJ188CA-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ188CA-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ188CA-M3/57T Tags
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