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Vishay General Semiconductor - Diodes Division SMCG170CAHE3/9AT
- Part No.:
- SMCG170CAHE3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AB, SMC Gull Wing
- Datasheet:
-
SMCG170CAHE3/9AT.pdf
- Description:
- TVS DIODE 170VWM 275VC DO215AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,041
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Product details
Overview
SMCG170CAHE3/9AT from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in the SMCG (DO-215AB) package, designed for robust overvoltage protection of sensitive electronics. It features a 170 V stand-off voltage (VWM), 1500 W peak pulse power (PPPM), clamping voltage of 275 V at 5.5 A IPPM, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMCG170CAHE3/9AT datasheet, SMCG170CAHE3/9AT pinout, SMCG170CAHE3/9AT application, or SMCG170CAHE3/9AT equivalent, this device is selected for high-energy surge suppression in automotive power lines, industrial sensor interfaces, and telecom signal conditioning where bidirectional clamping, low incremental surge resistance, and MSL Level 1 reflow compatibility are critical.
Technical Context
The SMCG170CAHE3/9AT operates as a bidirectional avalanche diode with symmetrical breakdown characteristics-minimum VBR of 189 V and maximum of 209 V at 1 mA test current. Its glass-passivated junction ensures stable leakage performance (<1.0 µA at VWM) and fast response to transients under 10/1000 µs waveforms.
Thermally, it delivers RθJA = 75 °C/W and RθJL = 15 °C/W, enabling reliable operation up to TJ = +150 °C. The device is rated for 1500 W peak pulse power on standard 8.0 mm × 8.0 mm copper pads and supports automated SMT placement per J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - Maximum continuous reverse operating voltage before clamping begins; defines system-level working voltage margin. |
| VBR (min/max) | 189 V / 209 V at 1 mA - Confirmed bidirectional breakdown range; ensures consistent clamping symmetry across polarity. |
| VC @ IPPM | 275 V at 5.5 A - Clamped voltage during 10/1000 µs surge; determines protected circuit's maximum transient exposure. |
| PPPM | 1500 W - Peak pulse power handling capacity; enables protection against IEC 61000-4-5 Level 4 surges (4 kV/2 Ω). |
| ID @ VWM | <1.0 µA - Ultra-low reverse leakage at rated stand-off; minimizes standby power loss in battery-powered systems. |
| TJ max. | +150 °C - Maximum junction temperature; supports under-hood automotive and high-ambient industrial environments. |
| AEC-Q101 | Qualified - Validated for automotive electronic modules per stress test requirements including HTOL, TCT, and ESD. |
Pinout & Package
Package: SMCG (DO-215AB) - surface-mount, gull-wing leaded case with matte tin-plated terminals; meets UL 94 V-0, MSL Level 1 (260 °C peak reflow), and JESD 201 Class 2 whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (bidirectional) | AC-coupled transient path | No polarity marking; symmetrical terminals enable placement without orientation check-reduces assembly error risk. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without external polarity management. |
| 1500 W peak pulse rating | Withstands repeated 4 kV IEC 61000-4-5 surges on 2 Ω source impedance-meets automotive EMC requirements. |
| AEC-Q101 qualification | Validated for automotive powertrain, body control, and ADAS modules requiring long-term reliability under thermal cycling and vibration. |
| Glass-passivated junction | Ensures stable VBR and ID over lifetime; eliminates parameter drift due to moisture ingress or contamination. |
| Low Rsurge | Minimizes voltage overshoot during fast-rising transients (e.g., ISO 7637-2 pulse 1/2a/5a), improving protection fidelity. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting LIN/CAN bus power rails and microcontroller supply inputs against load dump and alternator ripple in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional TVS clamping element placed upstream of LDOs and CAN transceivers. Use Value: Withstands 12 V system load dump surges (up to 35 V, 400 ms) while maintaining <1.0 µA leakage at 170 V VWM-preserving sleep-mode current budgets. |
Use Scenario: Shielding 4–20 mA current loop transmitters and analog sensor front-ends from field-induced transients in factory automation PLCs. IC Role / Device Role / Timing Role: Primary overvoltage clamp on signal and supply lines interfacing with harsh industrial environments. Use Value: 275 V clamping voltage limits transient energy delivered to downstream op-amps and ADCs, preventing latch-up or parametric shift. |
| Telecom Signal Conditioning | Consumer Power Adapter Input Stage |
Use Scenario: Safeguarding Ethernet PHY power pins and RS-485 data line terminations against lightning-induced surges in outdoor base stations. IC Role / Device Role / Timing Role: Secondary-level surge protector co-located with primary MOVs and gas discharge tubes. Use Value: Fast response (<1 ns) and low clamping voltage ensure sub-100 ns overvoltage containment-critical for Gigabit Ethernet timing integrity. |
Use Scenario: Input-stage transient suppression in universal-input AC/DC adapters for smart home devices subjected to mains-borne surges. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after bridge rectifier and before bulk capacitor. Use Value: 170 V VWM aligns with 120/230 VAC full-wave rectified peaks (~170 VDC), enabling precise clamping without false triggering. |
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 configuration, but lower PPPM (400 W) and larger SMA (DO-214AC) package. | Limited to lower-energy surges (IEC 61000-4-5 Level 2); unsuitable for automotive load dump or industrial 4 kV testing. | Select when board space allows larger footprint and surge requirements are ≤400 W. |
| SMCJ170CA | Same VWM and bidirectional function, higher PPPM (1500 W), but larger SMC (DO-214AB) package and non-AEC-Q101 qualified. | Acceptable for industrial/commercial use but lacks automotive qualification evidence and tighter thermal resistance (RθJA = 15 °C/W vs. 75 °C/W). | Choose only if AEC-Q101 is not required and PCB pad layout accommodates 7.11 mm × 6.22 mm outline. |
Compared with SMAJ170CA and SMCJ170CA, the SMCG170CAHE3/9AT uniquely combines AEC-Q101 qualification, DO-215AB compactness (30 % smaller than SMC), and verified 1500 W surge capability-making it the only option qualified for space-constrained automotive modules requiring full Level 4 surge immunity.
Availability
SMCG170CAHE3/9AT is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface protection, and telecom infrastructure surge hardening requiring stable component supply across multi-year production cycles.
Supply support for SMCG170CAHE3/9AT 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, and optoelectronics for automotive, industrial, and computing markets.
The SMCG series was engineered specifically for AEC-Q101-compliant, high-power-density transient suppression in next-generation automotive and industrial electronics-prioritizing low-profile packaging, repeatable clamping, and extended thermal endurance.
FAQ
What is the clamping voltage of the SMCG170CAHE3/9AT at its rated peak pulse current?
The SMCG170CAHE3/9AT has a maximum clamping voltage (VC) of 275 V at 5.5 A peak pulse current (IPPM), measured under the standardized 10/1000 µs waveform. This value is confirmed in the Vishay datasheet (Document Number: 88457, page 2) and defines the upper voltage limit imposed on protected circuits during surge events. The SMCG170CAHE3/9AT maintains this clamping performance across its full operating temperature range.
Is the SMCG170CAHE3/9AT suitable for automotive applications?
Yes-the SMCG170CAHE3/9AT is explicitly AEC-Q101 qualified (per datasheet note on page 3), making it suitable for automotive powertrain, body electronics, and ADAS modules. Its 170 V VWM, 1500 W PPPM, and +150 °C TJ max. support compliance with ISO 7637-2 and IEC 61000-4-5 requirements. The SMCG170CAHE3/9AT also meets JESD 201 Class 2 whisker resistance and MSL Level 1 reflow standards.
What does the "HE3" suffix indicate in SMCG170CAHE3/9AT?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification (per Vishay mechanical data section, page 2). "H" indicates AEC-Q101 qualification, "E3" specifies RoHS-compliant, industrial-grade plating. The "9AT" denotes 13-inch tape-and-reel packaging with 3500 units per reel-distinct from "57T" (7-inch reel, 850 units). The SMCG170CAHE3/9AT is not halogen-free; that variant uses "HM3".
How does the SMCG170CAHE3/9AT differ from unidirectional variants like SMCG170AHE3/9AT?
The SMCG170CAHE3/9AT is bidirectional, with symmetrical breakdown (VBR min/max = 189 V / 209 V) and no polarity marking, enabling AC or floating-line protection. In contrast, SMCG170AHE3/9AT is unidirectional, features a cathode band, and exhibits forward conduction (VF = 3.5 V at 100 A). The SMCG170CAHE3/9AT has identical VWM (170 V) and PPPM (1500 W) but differs in leakage behavior and circuit integration flexibility.
What is the thermal resistance of the SMCG170CAHE3/9AT, and how does it affect layout?
The SMCG170CAHE3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31″ × 0.31″ (8.0 mm × 8.0 mm) copper pads per terminal (datasheet page 3). This value assumes minimum recommended pad layout; reducing pad area increases RθJA and risks thermal runaway during repeated surges. Layout must maintain these pad dimensions to guarantee the SMCG170CAHE3/9AT's 1500 W rating and +150 °C operation.
SMCG170CAHE3/9AT 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)
SMCG170CAHE3/9AT FAQ
1.How can I place an order for SMCG170CAHE3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCG170CAHE3/9AT 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 SMCG170CAHE3/9AT reliable?
The price and inventory of SMCG170CAHE3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCG170CAHE3/9AT is usually 5 days.
3.What payment methods are accepted for SMCG170CAHE3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCG170CAHE3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCG170CAHE3/9AT?
SMCG170CAHE3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCG170CAHE3/9AT 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 SMCG170CAHE3/9AT?
For technical support, including SMCG170CAHE3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCG170CAHE3/9AT requirements.
6.How does Aetrix verify that SMCG170CAHE3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCG170CAHE3/9AT 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 SMCG170CAHE3/9AT meets industry standards.
7.What is the process for return or replacement of SMCG170CAHE3/9AT?
All SMCG170CAHE3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCG170CAHE3/9AT, 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 SMCG170CAHE3/9AT part is unused and in its original packaging.
Return procedure for SMCG170CAHE3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCG170CAHE3/9AT Tags
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