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Vishay General Semiconductor - Diodes Division SMCG170CAHE3/57T
- Part No.:
- SMCG170CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG170CAHE3/57T.pdf
- Description:
- TVS DIODE 170VWM 275VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,268
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Product details
Overview
SMCG170CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection on signal and power lines. It features a 170 V standoff voltage (VWM), 275 V clamping voltage (VC) at 5.5 A peak pulse current (IPPM), 1500 W peak pulse power (PPPM), and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG170CAHE3/57T datasheet, SMCG170CAHE3/57T pinout, SMCG170CAHE3/57T application, or SMCG170CAHE3/57T equivalent, key selection criteria include bidirectional clamping capability, low incremental surge resistance, MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector using an avalanche breakdown mechanism, with symmetrical breakdown characteristics in both directions due to its bidirectional construction. Its 1500 W PPPM rating is specified under the standardized 10/1000 μs waveform, and thermal performance is defined by RθJA = 75 °C/W and RθJL = 15 °C/W.
The SMCG170CAHE3/57T exhibits a maximum reverse leakage of 1.0 μA at VWM = 170 V, a breakdown voltage range of 189–209 V at 1 mA test current, and meets UL 497B recognition (QVGQ2) for surge protectors. It is rated for operation from –55 °C to +150 °C junction temperature and supports reflow soldering up to 260 °C peak per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe working margin for protected circuitry. |
| VBR min/max | 189 V / 209 V at 1 mA - Confirmed bidirectional breakdown threshold; ensures symmetric clamping behavior in AC or floating systems. |
| VC @ IPPM | 275 V at 5.5 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on downstream components. |
| PPPM | 1500 W - Peak surge energy handling capacity; enables protection against high-energy transients like ISO 7637-2 Pulse 5a. |
| TJ max | +150 °C - Maximum junction temperature; supports under-hood automotive deployment without derating in most PCB layouts. |
| MSL Level | Level 1 - No floor life limitation or bake requirement prior to reflow; simplifies manufacturing logistics and inventory management. |
| AEC-Q101 | Qualified - Validated for automotive electronic modules including body control units, sensor interfaces, and infotainment power rails. |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, gull-wing leaded case with matte tin-plated terminals; 0.31" × 0.31" (8.0 mm × 8.0 mm) recommended copper pad layout per terminal; meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point in forward bias; common node for bidirectional conduction path | No polarity marking; symmetrical terminal function enables use in AC-coupled or floating signal lines without orientation constraints. |
| Cathode | Current exit point in forward bias; common node for bidirectional conduction path | Identical electrical role to Anode in bidirectional configuration; terminals are interchangeable in layout. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of differential or AC signal paths (e.g., CAN bus, RS-485, sensor bridges) without external polarity logic. |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment power inputs per stress test requirements. |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (<1 ns rise time), improving protection margin for sensitive ICs like microcontrollers and ADCs. |
| Glass passivated junction | Enhances long-term reliability and stability of breakdown voltage under thermal cycling and humidity exposure per JESD22-A101. |
| MSL Level 1 compliance | Eliminates pre-bake steps and floor-life tracking, reducing SMT line downtime and supporting just-in-time production scheduling. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting LIN/CAN transceiver power rails against load dump and jump-start surges in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt clamp suppressing transients above 170 V while maintaining stable bias for communication ICs. Use Value: Prevents latch-up or permanent damage to transceivers during ISO 16750-2 tests, enabling compliance with OEM power supply specifications. |
Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Bidirectional voltage limiter on 4–20 mA loop or 0–10 V analog output lines exposed to ESD and inductive switching noise. Use Value: Maintains signal integrity below 275 V clamping level during 1 kV/500 A surge events, preserving measurement accuracy and system uptime. |
| Telecom Equipment Surge Suppression | Consumer Device USB/DisplayPort ESD Protection |
|
Use Scenario: Front-end protection of PoE-powered Ethernet switches against lightning-induced surges on data pairs. IC Role / Device Role / Timing Role: Fast-response TVS placed before magnetics and PHY ICs to divert common-mode transients. Use Value: Withstands 1500 W peak pulse energy per IEEE C62.41.2 Category B/C waveforms, extending equipment field life in outdoor deployments. |
Use Scenario: Board-level ESD hardening of high-speed serial interfaces in laptops and docking stations. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp on differential pairs (e.g., USB 3.2 Gen 2, DP 1.4) to suppress ±8 kV contact discharge. Use Value: Delivers sub-1 ns response with <1.0 μA leakage at 170 V, preventing signal distortion while meeting IEC 61000-4-2 Level 4 immunity. |
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 VC (275 V), but lower PPPM (400 W); SMA (DO-214AC) package with higher RθJA (110 °C/W). | Limited to lower-energy transients; unsuitable for automotive load dump or industrial 2 kV surge testing. | Select when cost or board space is critical and surge energy remains below 400 W. |
| 1.5KE170CA | Higher PPPM (1500 W), same VWM/VC, but axial-leaded DO-201AD package; not SMT-compatible and lacks AEC-Q101 qualification. | Requires through-hole assembly; incompatible with automated SMT lines and automotive qualification requirements. | Choose only for legacy through-hole designs where rework flexibility outweighs production efficiency and qualification needs. |
Compared with SMAJ170CA and 1.5KE170CA, the SMCG170CAHE3/57T uniquely combines AEC-Q101 qualification, MSL Level 1, DO-215AB SMT compatibility, and full 1500 W surge rating-making it the only option qualified for high-reliability automotive and industrial SMT production without layout or process compromise.
Availability
SMCG170CAHE3/57T is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer interface protection requiring stable component supply across multi-year production cycles.
Supply support for SMCG170CAHE3/57T 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The SMCG series is engineered specifically for high-energy transient suppression in harsh environments, with emphasis on AEC-Q101 compliance, low-profile SMT packaging, and consistent clamping performance across temperature and lifetime.
FAQ
What is the clamping voltage of the SMCG170CAHE3/57T under standard surge conditions?
The SMCG170CAHE3/57T has a maximum clamping voltage (VC) of 275 V when subjected to its rated peak pulse current (IPPM) of 5.5 A under the 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events, ensuring downstream ICs remain within safe operating limits.
Is the SMCG170CAHE3/57T suitable for automotive applications?
Yes, the SMCG170CAHE3/57T is AEC-Q101 qualified and rated for operation from –55 °C to +150 °C, making it suitable for under-hood and cabin-mounted automotive modules. Its bidirectional architecture, 1500 W surge rating, and MSL Level 1 compliance support use in powertrain control units, ADAS sensor interfaces, and infotainment power rails per ISO 16750 and ISO 7637 standards.
Does the SMCG170CAHE3/57T have polarity markings on the package?
No, the SMCG170CAHE3/57T is a bidirectional TVS diode and carries no polarity marking on the SMCG (DO-215AB) case. Both terminals are functionally identical, allowing unrestricted orientation during automated placement-unlike unidirectional variants that feature a cathode band. This simplifies layout and eliminates orientation-related assembly errors.
What is the thermal resistance of the SMCG170CAHE3/57T, and how does it affect PCB layout?
The SMCG170CAHE3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W. To achieve rated power dissipation, the datasheet specifies mounting on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. Reducing pad area increases thermal impedance and requires derating of PPPM at elevated ambient temperatures.
How does the SMCG170CAHE3/57T differ from unidirectional SMCG170A variants?
The SMCG170CAHE3/57T is bidirectional with symmetrical breakdown and clamping in both directions, while the SMCG170A is unidirectional and conducts only in reverse bias. The CA version supports AC-coupled or floating lines (e.g., CAN, RS-485), whereas the A version is limited to DC-biased rails with defined polarity. Both share identical VWM (170 V), VC (275 V), and PPPM (1500 W), but only the CA variant omits the cathode band marking.
SMCG170CAHE3/57T 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCG)
SMCG170CAHE3/57T FAQ
1.How can I place an order for SMCG170CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG170CAHE3/57T 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 SMCG170CAHE3/57T reliable?
The price and inventory of SMCG170CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG170CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG170CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG170CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG170CAHE3/57T?
SMCG170CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG170CAHE3/57T 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 SMCG170CAHE3/57T?
For technical support, including SMCG170CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG170CAHE3/57T requirements.
6.How does Aetrix verify that SMCG170CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG170CAHE3/57T 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 SMCG170CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG170CAHE3/57T?
All SMCG170CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG170CAHE3/57T, 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 SMCG170CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCG170CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG170CAHE3/57T Tags
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