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Vishay General Semiconductor - Diodes Division SMCG188CA-E3/57T
- Part No.:
- SMCG188CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG188CA-E3/57T.pdf
- Description:
- 1.5KW,188V 5%,BIDIR,SMC TVS
- Quantity:
- Payment:
- Shipping:
Inventory:3,047
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Product details
Overview
SMCG188CA-E3/57T from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in the SMCG (DO-215AB) package, rated for 188 V standoff voltage (VWM), 1500 W peak pulse power (PPPM), and clamping to 328 V at 4.6 A peak pulse current (IPPM). It provides robust protection for automotive sensor signal lines, industrial I/O ports, and telecom interface circuits against lightning-induced surges and inductive switching transients.
For engineers reviewing the SMCG188CA-E3/57T datasheet, SMCG188CA-E3/57T pinout, SMCG188CA-E3/57T application, or SMCG188CA-E3/57T equivalent, this device is selected for high-energy transient suppression where AEC-Q101 qualification, low clamping ratio (VC/VWM ≈ 1.74), and MSL Level 1 reflow compatibility are required in space-constrained designs.
Technical Context
This bidirectional TVS operates symmetrically across both polarities with identical breakdown (VBR min/max = 209 V / 231 V at 1 mA), clamping (VC = 328 V at IPPM), and leakage (ID ≤ 1.0 μA at VWM = 188 V) characteristics in either direction. Its glass-passivated junction ensures stable avalanche behavior under repetitive surge stress.
Thermal design relies on its RθJA of 75 °C/W and RθJL of 15 °C/W, requiring minimum 8.0 mm × 8.0 mm copper pads per terminal for full 1500 W rating. The device sustains operation from –55 °C to +150 °C junction temperature and meets J-STD-020 MSL Level 1 with 260 °C peak reflow profile.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 188 V - Maximum continuous reverse operating voltage before clamping begins; defines upper limit of protected circuit's normal operating range. |
| VBR (min/max) | 209 V / 231 V at 1 mA - Breakdown voltage window confirming reliable, repeatable avalanche initiation without premature conduction. |
| VC @ IPPM | 328 V at 4.6 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream ICs or MOSFETs. |
| PPPM | 1500 W - Peak pulse power handling capacity using standard 10/1000 μs waveform; validates suitability for IEC 61000-4-5 Level 4 surges. |
| ID @ VWM | ≤ 1.0 μA - Reverse leakage current at full standoff voltage; ensures negligible standby power loss and signal integrity in high-impedance lines. |
| TJ max. | +150 °C - Maximum junction temperature enabling use in under-hood automotive or high-ambient industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC specification. |
Pinout & Package
Package: SMCG (DO-215AB) - Surface-mount, low-profile gull-wing leaded package with matte tin-plated terminals, UL 94 V-0 molding compound, and no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional transient path | Both terminals function identically; no cathode band marking; enables placement without orientation check during automated assembly. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional symmetry | Identical VBR, VC, and ID in both directions - eliminates need for polarity-aware layout and supports AC-coupled or floating signal line protection. |
| AEC-Q101 qualification | Validated for automotive electronics - assures long-term reliability in engine control units, ADAS sensors, and body electronics under thermal and mechanical stress. |
| Low incremental surge resistance | Enables tight clamping ratio (VC/VWM = 1.74) - minimizes overvoltage exposure to sensitive 3.3 V or 5 V logic interfaces during fast transients. |
| MSL Level 1 rating | Compatible with standard 260 °C peak reflow profiles - supports high-yield SMT assembly without pre-baking or special handling. |
| Glass passivated junction | Stable avalanche performance across temperature and lifetime - prevents parameter drift under repeated surge events in industrial motor drives or power supplies. |
Applications
| Automotive Sensor Protection | Industrial I/O Port Protection |
|---|---|
Use Scenario: Protecting CAN FD or LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) in engine compartments exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role: Bidirectional TVS clamp placed directly at connector entry point to shunt surge energy before reaching signal conditioning ICs. Use Value: Withstands 1500 W surges while clamping to 328 V, ensuring downstream 5 V analog front-ends remain below absolute maximum ratings during 10/1000 μs transients. |
Use Scenario: Safeguarding RS-485, Modbus, or analog 4–20 mA input/output channels in PLCs and programmable logic controllers subjected to field wiring surges. IC Role / Device Role: Primary overvoltage protector on differential pair or single-ended signal lines interfacing with harsh factory-floor environments. Use Value: Low 1.0 μA leakage at 188 V VWM preserves signal accuracy on high-impedance sensor inputs; AEC-Q101 qualification adds margin for extended industrial lifecycle requirements. |
| Telecom Interface Protection | Power Supply Input Protection |
Use Scenario: Shielding Ethernet PHYs, PoE injectors, or DSL line drivers from lightning-induced common-mode surges entering via unshielded twisted-pair cabling. IC Role / Device Role: Secondary-level TVS deployed after gas discharge tube (GDT) or polymer PTC, providing fast-response clamping for residual transients. Use Value: 10/1000 μs response ensures sub-nanosecond turn-on; symmetrical bidirectional behavior matches balanced telecom line architecture without polarity constraints. |
Use Scenario: Protecting DC input rails of industrial power modules (e.g., 24 V or 48 V systems) against inductive kickback from relay coils, solenoids, or motor controllers. IC Role / Device Role: Parallel-connected transient suppressor across bulk input capacitor to absorb stored magnetic energy during switch-off events. Use Value: 1500 W PPPM rating handles >100 mJ single-event energy; 150 °C TJ max allows mounting near heat-generating power components without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ188CA | Same VWM (188 V) and bidirectional configuration, but lower PPPM (400 W) and higher VC (370 V at IPPM). | Not suitable for IEC 61000-4-5 Level 4; limited to lower-energy surges in consumer or non-automotive industrial settings. | Select SMAJ188CA only when board space is constrained to SMA footprint and surge energy remains below 400 W. |
| SMCJ188CA | Same VWM and bidirectional function, higher PPPM (1500 W), but larger SMC (DO-214AB) package and no AEC-Q101 qualification. | Lacks automotive qualification; requires larger PCB area and may not meet OEM sourcing requirements for vehicle platforms. | Choose SMCJ188CA if AEC-Q101 is unnecessary and thermal management favors larger pad area for improved heat dissipation. |
Compared with SMAJ188CA and SMCJ188CA, SMCG188CA-E3/57T uniquely delivers AEC-Q101 qualification, DO-215AB compactness, and full 1500 W surge capability-making it the only option satisfying automotive Tier-1 signal-line protection with zero layout compromise.
Availability
SMCG188CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial I/O protection, and telecom line safeguarding requiring stable component supply, traceable sourcing, and long-term lifecycle support.
Supply support for SMCG188CA-E3/57T 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, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series was engineered for high-energy transient suppression in space-constrained, thermally demanding environments-including automotive, industrial automation, and infrastructure communications equipment.
FAQ
What is the clamping voltage of SMCG188CA-E3/57T and how does it protect downstream components?
The SMCG188CA-E3/57T clamps to 328 V at its rated peak pulse current of 4.6 A (10/1000 μs waveform). This limits the maximum voltage seen by protected circuitry during a surge event, preventing damage to ICs, MOSFETs, or sensors rated for lower absolute maximum voltages. Its low clamping ratio (VC/VWM = 1.74) ensures effective voltage limiting without excessive overshoot, making SMCG188CA-E3/57T especially valuable in 24 V or 48 V system interfaces where transient margins are narrow.
Is SMCG188CA-E3/57T suitable for automotive applications?
Yes, SMCG188CA-E3/57T is AEC-Q101 qualified and explicitly designed for automotive use cases including engine control modules, ADAS sensor interfaces, and body electronics. Its construction features glass-passivated junctions, MSL Level 1 reflow compatibility, and guaranteed operation from –55 °C to +150 °C junction temperature-all validated per AEC test requirements. SMCG188CA-E3/57T meets OEM requirements for under-hood and chassis-mounted transient protection.
Does SMCG188CA-E3/57T have polarity markings, and how is it mounted on PCB?
No, SMCG188CA-E3/57T has no polarity markings because it is a bidirectional TVS diode-the anode and cathode terminals are functionally identical and interchangeable. It mounts in the SMCG (DO-215AB) gull-wing package with matte tin-plated leads, requiring no orientation verification during pick-and-place. The recommended pad layout is 0.31" × 0.31" (8.0 mm × 8.0 mm) copper area per terminal to sustain full 1500 W rating, as specified in the Vishay datasheet for SMCG188CA-E3/57T.
How does the 1500 W peak pulse power rating of SMCG188CA-E3/57T compare to industry standards?
The 1500 W PPPM rating of SMCG188CA-E3/57T aligns with IEC 61000-4-5 Level 4 surge immunity requirements (4 kV line-to-earth, 2 kV line-to-line), making it suitable for high-risk industrial and automotive applications. Unlike lower-rated alternatives such as SMAJ-series (400 W), SMCG188CA-E3/57T delivers threefold higher surge energy absorption in the same surface-mount footprint, enabling robust protection without increasing PCB area or adding cascaded protection stages.
What is the leakage current specification for SMCG188CA-E3/57T at its standoff voltage?
At its 188 V standoff voltage (VWM), SMCG188CA-E3/57T exhibits a maximum reverse leakage current (ID) of 1.0 μA at 25 °C. This ultra-low leakage preserves signal integrity on high-impedance sensor lines and avoids loading effects in precision analog circuits. Leakage remains within specification across the full operating temperature range, ensuring consistent performance in automotive and industrial environments where ambient temperatures vary widely. SMCG188CA-E3/57T maintains this value without degradation under repeated surge stress due to its glass-passivated junction.
SMCG188CA-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG188CA-E3/57T FAQ
1.How can I place an order for SMCG188CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG188CA-E3/57T 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 SMCG188CA-E3/57T reliable?
The price and inventory of SMCG188CA-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG188CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG188CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG188CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG188CA-E3/57T?
SMCG188CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG188CA-E3/57T 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 SMCG188CA-E3/57T?
For technical support, including SMCG188CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG188CA-E3/57T requirements.
6.How does Aetrix verify that SMCG188CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG188CA-E3/57T 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 SMCG188CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG188CA-E3/57T?
All SMCG188CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG188CA-E3/57T, 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 SMCG188CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCG188CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG188CA-E3/57T Tags
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