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Vishay General Semiconductor - Diodes Division SMCG170CA-E3/57T
- Part No.:
- SMCG170CA-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG170CA-E3/57T.pdf
- Description:
- TVS DIODE 170VWM 275VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,715
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Product details
Overview
SMCG170CA-E3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for high-energy surge protection with 1500 W peak pulse power (10/1000 µs), 189 V to 209 V breakdown voltage range at 1 mA test current, and 275 V maximum clamping voltage at rated peak pulse current. It protects signal lines and power rails in automotive sensor interfaces and industrial control I/O.
For engineers reviewing the SMCG170CA-E3/57T datasheet, SMCG170CA-E3/57T pinout, SMCG170CA-E3/57T application, or SMCG170CA-E3/57T equivalent, this device is selected for AEC-Q101-qualified bidirectional clamping in 12–48 V systems where low clamping ratio, MSL Level 1 reliability, and 150 °C junction operation are required.
Technical Context
This TVS diode operates symmetrically in both directions due to its bidirectional construction, enabling suppression of positive and negative transients without polarity sensitivity. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at 170 V stand-off), while the DO-215AB package supports automated placement and meets UL 94 V-0 flammability rating.
The device delivers 1500 W peak pulse power handling per 10/1000 µs waveform with a clamping voltage of 275 V at rated IPPM, achieving a clamping ratio (VC/VBR) of ~1.45–1.46. Thermal resistance is 75 °C/W (junction-to-ambient, on 8 mm × 8 mm copper pads), supporting sustained operation up to TJ = 150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power (10/1000 µs) | 1500 W - sustains high-energy surges common in automotive load-dump or inductive switching events |
| Breakdown Voltage VBR (IT = 1 mA) | 189 V to 209 V - defines precise voltage threshold where clamping initiates in either polarity |
| Stand-Off Voltage VWM | 170 V - maximum continuous reverse voltage before significant leakage; sets operating margin below VBR |
| Maximum Clamping Voltage VC | 275 V at IPPM - limits protected circuit voltage during worst-case surge, critical for downstream IC survival |
| Junction Temperature Range | −55 °C to +150 °C - enables deployment in under-hood automotive and industrial environments |
| Package | SMCG (DO-215AB) - low-profile SMD outline compatible with standard reflow and automated assembly |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
SMCG170CA-E3/57T uses the SMCG (DO-215AB) surface-mount package: a dual-leaded, gull-wing configuration with no polarity marking for bidirectional operation. The case is molded compound meeting UL 94 V-0, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional terminal pair | No functional polarity - either lead connects to protected line; clamping occurs identically in both directions |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics use, including temperature cycling, high-temp reverse bias, and mechanical shock |
| Low incremental surge resistance | Enables tight clamping voltage (275 V) despite 1500 W surge, minimizing overvoltage stress on downstream components |
| MSL Level 1 rating | Allows unlimited floor life and standard reflow without moisture-related cracking risk |
| Glass passivated junction | Ensures stable VBR over time and temperature, with <1.0 µA leakage at 170 V (VWM) |
| UL 94 V-0 molding compound | Meets flame-retardancy requirements for safety-critical industrial and automotive enclosures |
Applications
| Automotive Sensor Interface Protection | Industrial PLC Digital I/O Protection |
|---|---|
Use Scenario: Protecting CAN, LIN, or analog sensor signal lines (e.g., pressure, temperature) from ESD and load-dump transients in engine control units. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector or IC input to shunt surge energy before it reaches precision front-end circuitry. Use Value: Maintains signal integrity by limiting transient voltage to ≤275 V while surviving repeated 1500 W surges-critical for AEC-Q100-compliant microcontrollers and ADCs. |
Use Scenario: Safeguarding 24 V DC digital input modules in programmable logic controllers against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary overvoltage clamp on isolated input channels, positioned upstream of optocouplers or level-shifters. Use Value: Enables robust operation in factory-floor environments with >150 °C ambient capability and zero polarity dependency-reducing BOM count vs. unidirectional solutions. |
| Telecom Line Card Surge Suppression | Renewable Energy Inverter Control Signal Protection |
Use Scenario: Shielding Ethernet PHY or RS-485 transceivers on telecom line cards from lightning-induced surges and AC coupling faults. IC Role / Device Role / Timing Role: Secondary-level TVS placed after primary gas discharge tube (GDT), providing fast-response clamping for residual transients. Use Value: Fast response time and low clamping ratio (VC/VBR ≈ 1.45) ensure sub-100 ns protection window, preserving data integrity on multi-Mbps links. |
Use Scenario: Protecting gate-drive signals and feedback sensing lines in solar string inverters exposed to grid-switching transients and ground potential differences. IC Role / Device Role / Timing Role: Bidirectional transient suppressor on isolated PWM control paths between DSP and SiC MOSFET drivers. Use Value: Withstands 150 °C junction temperature and offers 170 V working voltage-matching typical auxiliary supply rails in high-voltage PV systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ170CA | Same VWM (170 V) and bidirectional structure, but lower PPPM (400 W) and higher VC (277 V); SMA package (DO-214AC) | Lower surge capacity suits consumer-grade or non-automotive applications; smaller footprint but less thermal mass | Select when cost or board space is prioritized over automotive-grade surge rating and thermal performance |
| SMCJ170CA | Same VWM and bidirectional function, higher PPPM (1500 W), identical VC (275 V), but larger SMC (DO-214AB) package | Higher thermal mass supports longer surge duration or higher ambient temperatures; not AEC-Q101 qualified | Choose for industrial power supplies needing same electrical specs but without automotive qualification requirement |
Compared with SMAJ170CA and SMCJ170CA, SMCG170CA-E3/57T uniquely combines AEC-Q101 qualification, DO-215AB low-profile packaging, and 1500 W surge capability-making it optimal for space-constrained automotive and industrial edge nodes requiring certified reliability.
Availability
SMCG170CA-E3/57T is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O terminals, and telecom line card designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for SMCG170CA-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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The SMCG series was developed to deliver AEC-Q101-qualified, high-power TVS protection in compact surface-mount packages for next-generation automotive and industrial electronics demanding consistent clamping performance across temperature and lifetime.
FAQ
What is the breakdown voltage tolerance for SMCG170CA-E3/57T?
The SMCG170CA-E3/57T has a specified breakdown voltage (VBR) range of 189 V to 209 V at 1 mA test current, representing a ±5.5% tolerance around the nominal 199 V midpoint. This tight distribution ensures predictable clamping onset across production lots and supports reliable design margining in 170 V systems.
Is SMCG170CA-E3/57T suitable for bidirectional signal line protection?
Yes, SMCG170CA-E3/57T is explicitly designed as a bidirectional TVS diode, with symmetrical clamping behavior in both polarities. Its CA suffix confirms bidirectional functionality, and electrical characteristics-including VBR, VC, and ID-are identical for positive and negative surges, making it ideal for protecting differential or AC-coupled signal paths like RS-485 or CAN FD.
Does SMCG170CA-E3/57T require polarity-aware PCB layout?
No, SMCG170CA-E3/57T does not require polarity-aware layout because it is a bidirectional device with no cathode marking or functional anode/cathode distinction. Either terminal may connect to the protected line or ground reference, simplifying routing and eliminating orientation errors during automated assembly.
What is the maximum operating temperature for SMCG170CA-E3/57T?
The SMCG170CA-E3/57T has a maximum junction temperature (TJ max.) of +150 °C and an operating junction/storage temperature range of −55 °C to +150 °C. This rating enables use in under-hood automotive locations and high-ambient industrial enclosures, provided thermal design (e.g., copper pad area) maintains junction temperature within limit during surge events.
How does the SMCG170CA-E3/57T differ from unidirectional variants like SMCG170A-E3/57T?
SMCG170CA-E3/57T is bidirectional with symmetrical clamping and no polarity marking, whereas SMCG170A-E3/57T is unidirectional with a cathode band and only clamps reverse-polarity transients. The CA version supports AC or floating-line protection; the A version requires correct orientation and is used where forward conduction must be blocked-e.g., DC power rail protection with defined ground reference.
SMCG170CA-E3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AB, SMC Gull Wing
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 170V
- Voltage - Breakdown (Min):
- 189V
- Voltage - Clamping (Max) @ Ipp:
- 275V
- Current - Peak Pulse (10/1000µs):
- 5.5A
- 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 (SMCG)
SMCG170CA-E3/57T FAQ
1.How can I place an order for SMCG170CA-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG170CA-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 SMCG170CA-E3/57T reliable?
The price and inventory of SMCG170CA-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 SMCG170CA-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCG170CA-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG170CA-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG170CA-E3/57T?
SMCG170CA-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG170CA-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 SMCG170CA-E3/57T?
For technical support, including SMCG170CA-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG170CA-E3/57T requirements.
6.How does Aetrix verify that SMCG170CA-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG170CA-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 SMCG170CA-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCG170CA-E3/57T?
All SMCG170CA-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG170CA-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 SMCG170CA-E3/57T part is unused and in its original packaging.
Return procedure for SMCG170CA-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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