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Vishay General Semiconductor - Diodes Division SMCG17CAHE3/57T
- Part No.:
- SMCG17CAHE3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG17CAHE3/57T.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO215AB
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMCG17CAHE3/57T from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) surface-mount package, designed for robust overvoltage protection of sensitive electronics. It features a 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 1 mA, 1500 W peak pulse power (10/1000 µs), clamping voltage of 27.6 V at 54.3 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG17CAHE3/57T datasheet, SMCG17CAHE3/57T pinout, SMCG17CAHE3/57T application, or SMCG17CAHE3/57T equivalent, this device is selected for high-energy surge suppression in automotive sensor interfaces, industrial I/O lines, and DC power rail protection where bidirectional clamping, low clamping ratio, and MSL Level 1 solderability are required.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, with identical electrical characteristics in forward and reverse directions - confirmed by specification notes stating "Electrical characteristics apply in both directions" and "For bidirectional devices use CA suffix". Its glass-passivated junction ensures stable VBR tolerance and low leakage (≤1.0 µA at VWM), 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 thermal resistance RθJA = 75 °C/W and RθJL = 15 °C/W, enabling effective heat dissipation on standard 8.0 mm × 8.0 mm copper pads. Its AEC-Q101 qualification confirms suitability for automotive under-hood and body electronics applications requiring extended temperature operation from –55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for protected circuitry. |
| VBR (min/max) | 18.9 V / 20.9 V at IT = 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during transients. |
| VC @ IPPM | 27.6 V at 54.3 A - Clamping voltage under full-rated surge; determines maximum stress imposed on downstream components. |
| PPPM | 1500 W (10/1000 µs) - Peak surge energy absorption capability; enables protection against lightning-induced or inductive-switching transients. |
| ID @ VWM | ≤1.0 µA - Ultra-low reverse leakage at stand-off voltage; minimizes standby power loss and signal distortion. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in under-hood automotive and industrial environments. |
| Package | SMCG (DO-215AB) - Low-profile SMD outline with matte tin-plated leads; qualified for J-STD-002 solderability and JESD201 Class 2 whisker resistance. |
Pinout & Package
SMCG17CAHE3/57T uses the SMCG (DO-215AB) surface-mount package - a symmetrical, bidirectional two-terminal device with no polarity marking. The package has two coplanar gull-wing leads; terminals are electrically identical and interchangeable in circuit layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 | Anode/Cathode (bidirectional) | Either terminal serves as anode or cathode depending on transient polarity; no fixed polarity - enables simplified PCB routing. |
| Terminal 2 | Anode/Cathode (bidirectional) | Electrically identical to Terminal 1; device functions identically regardless of orientation on board. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and body electronics per stress test requirements. |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without preconditioning; eliminates moisture sensitivity concerns in manufacturing. |
| Glass passivated junction | Ensures stable VBR tolerance, low leakage drift over time/temperature, and long-term reliability in harsh environments. |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation material; satisfies flame-retardancy requirements for automotive and industrial safety standards. |
| 1500 W peak pulse power | Withstands high-energy transients such as ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges without degradation. |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ESD events in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector or IC input pins to shunt surge current before it reaches sensitive interface circuitry. Use Value: Maintains signal integrity during 1500 W transients while limiting clamped voltage to 27.6 V - well below typical IC absolute maximum ratings. |
Use Scenario: Safeguarding digital input/output channels of programmable logic controllers against field-wiring induced surges and ground loop transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on 24 V DC supply rails and discrete I/O lines, operating in parallel with upstream fuses or PTCs. Use Value: Enables reliable operation in factory environments with frequent inductive switching noise, thanks to fast response time and low incremental surge resistance. |
| DC Power Rail Protection | Telecom Interface Protection |
Use Scenario: Guarding 12–24 V DC power distribution networks in embedded systems against reverse battery connection, load dump, and switching spikes. IC Role / Device Role / Timing Role: Standoff-mode protector placed between power input and bulk capacitance, absorbing energy before it propagates into regulation stages. Use Value: Withstands 200 A non-repetitive forward surge (IFSM) and maintains ≤1.0 µA leakage at 17 V - minimizing quiescent current draw. |
Use Scenario: Shielding RS-485/RS-232 transceiver ports in base station equipment and network infrastructure from lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: First-line transient suppressor mounted at board edge, coordinated with GDT or MOV-based secondary protection stages. Use Value: Provides precise 17 V clamping threshold and 27.6 V VC to protect transceivers rated for ±15 V common-mode range without overstressing internal ESD structures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ17CA | Same VWM (17 V) and bidirectional configuration, but lower PPPM (400 W) and larger SMA (DO-214AC) package. | Limited to lower-energy transients; less suitable for ISO 7637-2 Pulse 5a or IEC 61000-4-5 Line-to-Ground surges. | Select when cost or board space constraints outweigh need for 1500 W surge capacity. |
| SMCJ17CA | Identical VWM (17 V), bidirectional, and DO-214AB package - but rated for 1500 W with higher clamping voltage (33.2 V at 45.3 A). | Higher VC reduces margin for low-voltage ICs; requires verification of downstream component withstand capability. | Choose if DO-214AB footprint compatibility is mandatory and clamping voltage margin allows. |
Compared with SMAJ17CA and SMCJ17CA, SMCG17CAHE3/57T offers the same 17 V stand-off and AEC-Q101 qualification in a smaller DO-215AB footprint, with superior clamping performance (27.6 V vs. 33.2 V) - making it optimal for space-constrained, high-reliability automotive and industrial designs.
Availability
SMCG17CAHE3/57T is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and DC power rail safeguarding requiring stable component supply, AEC-Q101 compliance, and high-energy transient immunity.
Supply support for SMCG17CAHE3/57T 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 for high-power, surface-mount transient suppression in automotive and industrial systems - prioritizing AEC-Q101 qualification, low-profile packaging, and consistent bidirectional clamping performance.
FAQ
What is the clamping voltage of SMCG17CAHE3/57T and how is it measured?
The clamping voltage (VC) of SMCG17CAHE3/57T is 27.6 V, measured at a peak pulse current (IPPM) of 54.3 A using the standardized 10/1000 µs double-exponential waveform. This value is specified in the Electrical Characteristics table and reflects the maximum voltage seen across the device terminals during full-rated surge conditions - critical for ensuring protected ICs remain within their absolute maximum voltage limits. SMCG17CAHE3/57T achieves this with low incremental surge resistance and fast response time.
Is SMCG17CAHE3/57T suitable for automotive applications?
Yes, SMCG17CAHE3/57T is AEC-Q101 qualified and explicitly listed in Vishay's documentation as meeting automotive stress test requirements. Its operating temperature range (–55 °C to +150 °C), MSL Level 1 reflow compatibility, and bidirectional 1500 W surge capability make it appropriate for engine control units, ADAS sensor modules, and body electronics where reliability under harsh conditions is mandatory. SMCG17CAHE3/57T also carries the HE3 suffix denoting AEC-Q101 qualification.
What does the "CA" suffix mean in SMCG17CAHE3/57T?
The "CA" suffix in SMCG17CAHE3/57T designates a bidirectional configuration - meaning the device provides symmetrical transient suppression for both positive and negative voltage excursions. Unlike unidirectional variants (e.g., SMCG17A), SMCG17CAHE3/57T has no polarity marking and identical VBR, VC, and leakage characteristics in either direction, simplifying layout and eliminating orientation-dependent assembly errors. This is confirmed in the datasheet's "DEVICES FOR BIDIRECTION APPLICATIONS" section.
What is the package type and mounting compatibility of SMCG17CAHE3/57T?
SMCG17CAHE3/57T uses the SMCG (DO-215AB) package - a low-profile, gull-wing surface-mount outline with 0.058" (1.47 mm) lead width and 0.310" × 0.400" (7.87 mm × 10.16 mm) body dimensions. It is compatible with standard SMT pick-and-place equipment and reflow profiles up to 260 °C peak (MSL Level 1). The matte tin-plated leads meet J-STD-002 solderability requirements, and the UL 94 V-0 molding compound supports safety-critical deployments. SMCG17CAHE3/57T requires no special stencil or placement adjustments.
How does SMCG17CAHE3/57T compare to unidirectional TVS diodes with the same VWM?
SMCG17CAHE3/57T differs from unidirectional counterparts (e.g., SMCG17A) by providing identical clamping behavior for both polarities - essential for AC-coupled signals, differential buses like CAN, or circuits where voltage reversal is possible. While unidirectional types specify cathode marking and forward conduction (VF = 3.5 V at 100 A), SMCG17CAHE3/57T has no VF rating and zero polarity dependence. Its ID leakage remains ≤1.0 µA at VWM in both directions, supporting precision analog and low-power applications where bidirectional leakage symmetry matters.
SMCG17CAHE3/57T 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 54.3A
- 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)
SMCG17CAHE3/57T FAQ
1.How can I place an order for SMCG17CAHE3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG17CAHE3/57T 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 SMCG17CAHE3/57T reliable?
The price and inventory of SMCG17CAHE3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG17CAHE3/57T is usually 5 days.
3.What payment methods are accepted for SMCG17CAHE3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG17CAHE3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG17CAHE3/57T?
SMCG17CAHE3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG17CAHE3/57T 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 SMCG17CAHE3/57T?
For technical support, including SMCG17CAHE3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG17CAHE3/57T requirements.
6.How does Aetrix verify that SMCG17CAHE3/57T is sourced from the original manufacturer or authorized distributors?
All SMCG17CAHE3/57T 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 SMCG17CAHE3/57T meets industry standards.
7.What is the process for return or replacement of SMCG17CAHE3/57T?
All SMCG17CAHE3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCG17CAHE3/57T, 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 SMCG17CAHE3/57T part is unused and in its original packaging.
Return procedure for SMCG17CAHE3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG17CAHE3/57T Tags
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