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Vishay General Semiconductor - Diodes Division SMCJ188CAHE3/57T
- Part No.:
- SMCJ188CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ188CAHE3/57T.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,934
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Product details
Overview
SMCJ188CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection on power and signal lines. It features a 188 V stand-off voltage (VWM), 328 A peak pulse current (IPPM) at 10/1000 μs, 328 V clamping voltage (VC), 1500 W peak pulse power (PPPM), and operates across -55 °C to +150 °C junction temperature range - deployed in automotive power rail and industrial sensor interface protection.
For engineers reviewing the SMCJ188CAHE3/57T datasheet, SMCJ188CAHE3/57T pinout, SMCJ188CAHE3/57T application, or SMCJ188CAHE3/57T equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 1500 W surge rating, low thermal resistance (RθJL = 15 °C/W), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This TVS diode uses an avalanche breakdown mechanism to clamp transient overvoltages in both directions, with symmetrical electrical characteristics due to its bidirectional construction. Its glass-passivated junction ensures stable breakdown behavior and low leakage (<1.0 μA at VWM), while the SMC package enables high thermal dissipation under repetitive surge stress.
The device is rated for 1500 W peak pulse power per 10/1000 μs waveform, derated linearly above 25 °C ambient, and exhibits a typical junction-to-lead thermal resistance of 15 °C/W - critical for sustained operation in automotive engine control units and industrial motor drives where board-level heat spreading is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 188 V - maximum continuous reverse operating voltage before clamping initiates; defines safe operating margin below system rail voltage. |
| VBR (Breakdown Voltage) | 209–231 V at 1 mA - guaranteed avalanche onset range; ensures predictable turn-on during transients without premature conduction. |
| VC (Clamping Voltage) | 328 V at IPPM - peak voltage seen by protected circuit during 1500 W surge; determines downstream component voltage stress. |
| IPPM (Peak Pulse Current) | 328 A - maximum non-repetitive surge current it can divert without failure; validates robustness against ISO 7637-2 Pulse 5a/b or IEC 61000-4-5 surges. |
| PPPM (Peak Pulse Power) | 1500 W - energy-handling capacity under standardized 10/1000 μs waveform; supports high-energy lightning-induced transients. |
| TJ max. | +150 °C - maximum junction temperature rating; enables use in under-hood automotive environments and sealed industrial enclosures. |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; required for powertrain and ADAS subsystems. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 7.75 mm × 6.22 mm × 2.62 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode / Anode (symmetrical) | Bidirectional terminal pair | No polarity distinction; either terminal serves as cathode or anode depending on transient polarity - enables single-device protection of AC or floating DC lines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including powertrain ECUs and body control modules - meets stress test requirements for temperature cycling, HTRB, and ESD. |
| 1500 W peak pulse power | Handles high-energy transients per IEC 61000-4-5 Level 4 (4 kV line-earth) and ISO 7637-2 Pulse 5a (100 V/350 Ω) without degradation. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 μA at VWM), critical for low-power sensor interfaces and battery-backed systems. |
| MSL Level 1 (260 °C) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns - eliminates pre-bake requirement in SMT assembly. |
| Low RθJL (15 °C/W) | Enables efficient heat transfer from junction to PCB copper pad, supporting sustained surge duty cycles in compact industrial power supplies. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 24 V supply lines in engine control units against load dump and alternator transients per ISO 16750-2. IC Role / Device Role / Timing Role: Bidirectional clamping element placed upstream of DC/DC converters and microcontrollers. Use Value: Limits transient voltage to ≤328 V during 100 V/350 Ω load dump events, preserving downstream ICs rated for 36 V absolute maximum. |
Use Scenario: Shielding analog outputs of pressure/temperature sensors in factory automation PLC modules from ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (unspecified but typical <100 pF) shunt protector on 4–20 mA or 0–10 V output lines. Use Value: Clamps fast-rising ESD pulses (IEC 61000-4-2 ±8 kV contact) within nanoseconds while adding negligible signal distortion. |
| Telecom Line Interface | Renewable Energy Inverter DC Link |
Use Scenario: Safeguarding Ethernet PHY power pins and auxiliary bias rails in outdoor telecom base station equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary surge suppression stage before secondary TVS arrays and filtering components. Use Value: Absorbs up to 1500 W of coupled lightning energy (IEC 61000-4-5 2 Ω/12 Ω coupling) without thermal runaway. |
Use Scenario: Protecting DC link capacitors and gate drivers in solar string inverters subjected to grid-switching transients and capacitor bank switching spikes. IC Role / Device Role / Timing Role: High-energy crowbar device mounted directly across DC bus terminals near power modules. Use Value: Withstands repeated 10/1000 μs surges up to 328 A, preventing overvoltage failure of 600 V IGBTs and SiC MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ188CA | Same 188 V VWM and 328 V VC, but lower PPPM (400 W) and IPPM (125 A); SMC package identical. | Not suitable for ISO 7637-2 Pulse 5 or IEC 61000-4-5 Level 4; limited to low-energy ESD and inductive kick scenarios. | Select only when system-level surge energy is confirmed ≤400 W and layout constraints require same footprint. |
| ON Semiconductor 1.5KE188CA | Higher VWM (188 V) but through-hole DO-201 package; 1500 W rating matches, but RθJA ≈ 25 °C/W vs. 75 °C/W for SMCJ. | Requires manual or wave soldering; unsuitable for high-density SMT designs or automotive vibration environments. | Choose only for legacy through-hole boards or prototyping where reflow compatibility is not required. |
Compared with SMCJ188CAHE3/57T, SMAJ188CA offers identical form factor but significantly lower surge capacity, while 1.5KE188CA matches power rating but sacrifices SMT manufacturability and thermal performance - making SMCJ188CAHE3/57T the optimal choice for AEC-Q101-compliant, high-density, high-reliability applications.
Availability
SMCJ188CAHE3/57T is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor conditioning, telecom infrastructure protection, and renewable energy inverter design requiring stable component supply and long-term lifecycle support.
Supply support for SMCJ188CAHE3/57T 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, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, efficiency, and application-specific optimization.
The SMCJ series was engineered for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom systems where AEC-Q101 compliance, low clamping ratio, and robust thermal performance are mandatory.
FAQ
What is the clamping voltage of SMCJ188CAHE3/57T at its rated peak pulse current?
The SMCJ188CAHE3/57T has a maximum clamping voltage (VC) of 328 V at its rated peak pulse current (IPPM) of 328 A under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during worst-case surge events - critical for ensuring downstream components remain within their absolute maximum ratings.
Is SMCJ188CAHE3/57T suitable for automotive applications?
Yes, SMCJ188CAHE3/57T is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix, indicating RoHS-compliant and AEC-Q101-qualified construction. It meets requirements for temperature cycling, highly accelerated life testing (HALT), and ESD immunity - making it appropriate for engine control units, body electronics, and ADAS power domains where reliability under thermal and mechanical stress is essential.
How does the bidirectional configuration of SMCJ188CAHE3/57T affect its circuit implementation?
The bidirectional configuration of SMCJ188CAHE3/57T means it provides symmetrical clamping in both polarities without requiring orientation during placement - ideal for protecting AC-coupled signal lines, floating DC buses, or differential interfaces. Unlike unidirectional TVS diodes, SMCJ188CAHE3/57T has no cathode marking and functions identically regardless of voltage polarity, simplifying layout and eliminating risk of reverse installation.
What is the thermal resistance profile of SMCJ188CAHE3/57T, and why does it matter?
SMCJ188CAHE3/57T has a typical junction-to-lead thermal resistance (RθJL) of 15 °C/W and junction-to-ambient (RθJA) of 75 °C/W when mounted on 8.0 mm × 8.0 mm copper pads. Low RθJL enables rapid heat transfer from the silicon junction into the PCB copper, which is vital for surviving repetitive surge events in industrial motor drives or automotive power modules where sustained thermal buildup could cause parametric shift or failure.
Does SMCJ188CAHE3/57T require special handling during PCB assembly?
No, SMCJ188CAHE3/57T is rated MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C, meaning it can be processed using standard lead-free SMT reflow profiles without pre-baking or moisture-sensitive handling. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, ensuring reliable solder wetting and whisker resistance in high-volume manufacturing environments.
SMCJ188CAHE3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 188V
- Voltage - Breakdown (Min):
- 209V
- Voltage - Clamping (Max) @ Ipp:
- 328V
- Current - Peak Pulse (10/1000µs):
- 4.6A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ188CAHE3/57T FAQ
1.How can I place an order for SMCJ188CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ188CAHE3/57T 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 SMCJ188CAHE3/57T reliable?
The price and inventory of SMCJ188CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ188CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ188CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ188CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ188CAHE3/57T?
SMCJ188CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ188CAHE3/57T 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 SMCJ188CAHE3/57T?
For technical support, including SMCJ188CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ188CAHE3/57T requirements.
6.How does Aetrix verify that SMCJ188CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ188CAHE3/57T 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 SMCJ188CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ188CAHE3/57T?
All SMCJ188CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ188CAHE3/57T, 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 SMCJ188CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ188CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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