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Vishay General Semiconductor - Diodes Division SMCJ188AHE3/57T
- Part No.:
- SMCJ188AHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ188AHE3/57T.pdf
- Description:
- TVS DIODE 188VWM 328VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,820
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Product details
Overview
SMCJ188AHE3/57T from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMC (DO-214AB) package, designed for high-energy surge protection with 188 V standoff voltage (VWM), 209–231 V breakdown range (VBR), and 1500 W peak pulse power (PPPM) at 10/1000 µs waveform. It clamps transients to ≤328 V at 4.6 A peak surge current and operates across –55 °C to +150 °C junction temperature, targeting automotive and industrial power rail protection.
For engineers reviewing the SMCJ188AHE3/57T datasheet, SMCJ188AHE3/57T pinout, SMCJ188AHE3/57T application, or SMCJ188AHE3/57T equivalent, this device serves as a robust, AEC-Q101-qualified transient suppressor for 12 V–48 V DC systems where precise clamping, low leakage (<1 µA at VWM), and fast response (<1 ns) are critical for MOSFET gate drivers, sensor interfaces, and ECU power inputs.
Technical Context
The SMCJ188AHE3/57T employs a glass-passivated silicon junction optimized for low incremental surge resistance and stable clamping under repetitive 10/1000 µs surges. Its unidirectional polarity enables cathode-referenced placement on positive rails, with thermal resistance of 75 °C/W (junction-to-ambient) and 15 °C/W (junction-to-lead) supporting reliable operation without forced cooling on standard PCB copper pads.
It meets J-STD-020 MSL Level 1 (260 °C peak reflow), features matte tin-plated leads compliant with J-STD-002 and JESD 22-B102, and is qualified per AEC-Q101 for automotive use-confirmed by HE3 suffix and Vishay's automotive ordering code structure.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - Maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected line voltage. |
| VBR min/max | 209 V / 231 V at 1 mA test current - Confirmed breakdown range ensures predictable turn-on during overvoltage events. |
| VC @ IPPM | 328 V at 4.6 A - Clamped voltage under full-rated 1500 W surge; defines worst-case stress on downstream components. |
| PPPM | 1500 W - Peak pulse power handling capability with 10/1000 µs waveform; validates robustness against IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | <1 µA - Ultra-low reverse leakage ensures minimal standby power loss and signal integrity on high-impedance nodes. |
| TJ max | +150 °C - Enables deployment in under-hood automotive environments and industrial enclosures without derating. |
| Package | SMC (DO-214AB) - Standardized surface-mount outline with 8.0 mm × 8.0 mm copper pad requirement for thermal and surge performance. |
Pinout & Package
SMCJ188AHE3/57T uses the SMC (DO-214AB) package: molded plastic case with matte tin-plated leads, cathode indicated by a band on the body. Mounting requires 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal per Vishay specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage return path; forms current path during reverse-biased clamping. |
| Cathode | Protected line input | Connected to the line being protected (e.g., 188 V rail); carries surge current into anode during overvoltage. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD; supports PPAP documentation. |
| Glass passivated junction | Enhances long-term reliability and moisture resistance versus epoxy-passivated alternatives; critical for harsh-environment deployments. |
| MSL Level 1 rating | Enables single-reflow assembly without baking; compatible with standard SMT lines using 260 °C peak profile. |
| Low clamping ratio (VC/VBR) | ~1.57 (328 V / 209 V) - Minimizes overvoltage overshoot during fast transients, reducing risk of downstream IC damage. |
| 1500 W surge rating | Supports IEC 61000-4-5 combination wave testing up to 4 kV open-circuit / 2 kA short-circuit without degradation. |
Applications
| Automotive Engine Control Unit (ECU) Power Input | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protects 12 V–24 V supply rails in engine control modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional TVS placed between battery feed and LDO input to clamp spikes above 188 V. Use Value: Prevents LDO failure and microcontroller reset during ISO 7637-2 Pulse 5a (load dump) events up to 60 V peak. |
Use Scenario: Shields 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff-rated TVS on each optocoupler input line to absorb inductive kickback from solenoid switching. Use Value: Maintains signal integrity and prevents false triggering by limiting transient voltage to ≤328 V within <1 ns response time. |
| Telecom Base Station DC Power Distribution | Medical Imaging Power Supply Rail |
Use Scenario: Guards 48 V backplane distribution in outdoor telecom cabinets exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary-level TVS on main DC input before DC/DC converters to absorb bulk energy prior to secondary protection. Use Value: Handles 1500 W pulses without thermal runaway, enabling compliance with ITU-T K.20 and IEC 61000-4-5 Class 3. |
Use Scenario: Secures auxiliary 188 V bias rails in X-ray generator power supplies against switching transients. IC Role / Device Role / Timing Role: High-VWM TVS placed directly across capacitor banks to suppress ringing and overshoot during MOSFET switching. Use Value: Ensures uninterrupted imaging sequence by preventing overvoltage shutdown triggered by >200 V transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ188AHE3/52T | Lower PPPM (600 W), same VWM/VBR, SMB package (smaller footprint, higher RθJA = 110 °C/W). | Restricted to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Select only when board space is constrained and surge threat level is limited to IEC 61000-4-5 Level 2. |
| SMCJ188CAHE3/57T | Bidirectional variant; identical VWM/VBR/PPPM but symmetrical clamping in both polarities. | Required for AC-coupled or floating signal lines where polarity reversal may occur (e.g., RS-485, CAN bus). | Choose only if bidirectional protection is mandated; unidirectional SMCJ188AHE3/57T offers lower cost and simpler layout for DC rails. |
Compared with SMBJ188AHE3/52T, the SMCJ188AHE3/57T delivers 2.5× higher surge power handling and superior thermal dissipation; compared with SMCJ188CAHE3/57T, it provides optimized clamping for fixed-polarity DC systems while avoiding unnecessary bidirectional capacitance and cost.
Availability
SMCJ188AHE3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial PLCs, telecom base station power supplies, and medical imaging equipment requiring stable component supply and AEC-Q101-compliant surge protection.
Supply support for SMCJ188AHE3/57T 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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices, with emphasis on reliability, precision, and automotive-grade qualification.
The SMCJ series targets high-energy transient suppression in automotive, industrial, and telecom infrastructure, delivering standardized DO-214AB packaging with AEC-Q101 validation and consistent 1500 W surge capability across the voltage range.
FAQ
What is the maximum clamping voltage of the SMCJ188AHE3/57T under rated surge conditions?
The SMCJ188AHE3/57T clamps to a maximum of 328 V when subjected to its rated 4.6 A peak pulse current (IPPM) derived from the 1500 W peak pulse power (PPPM) at 10/1000 µs waveform. This value is measured per Vishay's test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case transient events.
Is the SMCJ188AHE3/57T suitable for automotive applications?
Yes, the SMCJ188AHE3/57T is explicitly AEC-Q101 qualified, as confirmed by its HE3 suffix and Vishay's automotive ordering code designation. It meets stress test requirements for temperature cycling, high-temperature operating life, and ESD, making it appropriate for engine control units, body control modules, and other under-hood or chassis-mounted electronics.
How does the SMCJ188AHE3/57T differ from the bidirectional SMCJ188CAHE3/57T?
The SMCJ188AHE3/57T is unidirectional with cathode marking and optimized for DC rail protection, whereas the SMCJ188CAHE3/57T is bidirectional with no polarity marking and symmetric clamping in both directions. Their VWM, VBR, PPPM, and package are identical, but the unidirectional version offers lower cost and avoids unnecessary capacitance for fixed-polarity applications.
What is the recommended PCB pad layout for optimal thermal and surge performance of the SMCJ188AHE3/57T?
Vishay specifies 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads for each terminal of the SMCJ188AHE3/57T to achieve rated 1500 W surge capability and thermal resistance. Smaller pads reduce surge handling and increase junction temperature; adherence to this layout ensures compliance with datasheet ratings and AEC-Q101 qualification limits.
Does the SMCJ188AHE3/57T have RoHS and halogen-free compliance?
The SMCJ188AHE3/57T carries the HE3 suffix, indicating RoHS-compliant construction and AEC-Q101 qualification. It is not halogen-free; for halogen-free compliance, the HM3 suffix variant (e.g., SMCJ188A HM3/57T) must be selected, as specified in Vishay's ordering information table.
SMCJ188AHE3/57T 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:
- 1
- Bidirectional Channels:
- -
- 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)
SMCJ188AHE3/57T FAQ
1.How can I place an order for SMCJ188AHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ188AHE3/57T 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 SMCJ188AHE3/57T reliable?
The price and inventory of SMCJ188AHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ188AHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ188AHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ188AHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ188AHE3/57T?
SMCJ188AHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ188AHE3/57T 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 SMCJ188AHE3/57T?
For technical support, including SMCJ188AHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ188AHE3/57T requirements.
6.How does Aetrix verify that SMCJ188AHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ188AHE3/57T 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 SMCJ188AHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ188AHE3/57T?
All SMCJ188AHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ188AHE3/57T, 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 SMCJ188AHE3/57T part is unused and in its original packaging.
Return procedure for SMCJ188AHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ188AHE3/57T Tags
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