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Vishay General Semiconductor - Diodes Division SMBG170CA-E3/52
- Part No.:
- SMBG170CA-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG170CA-E3/52.pdf
- Description:
- TVS DIODE 170VWM 275VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,587
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Product details
Overview
SMBG170CA-E3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for clamping ESD and surge transients on signal/power lines. It features 170 V stand-off voltage (VWM), 189–209 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), 2.2 A maximum clamping current (IPPM), and 275 V maximum clamping voltage (VC) - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the SMBG170CA-E3/52 datasheet, SMBG170CA-E3/52 pinout, SMBG170CA-E3/52 application, or SMBG170CA-E3/52 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, bidirectional clamping behavior, thermal resistance (RθJA = 100 °C/W), and real-world use context for surge protection design validation.
Technical Context
This bidirectional TVS operates symmetrically across both polarities with identical VBR, VC, and leakage characteristics in either direction. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance, critical for repeatable clamping under repetitive transients.
Rated for -55 °C to +150 °C operating junction temperature and qualified to AEC-Q101, the SMBG170CA-E3/52 supports automotive-grade reliability. It meets UL 497B recognition (QVGQ2) and J-STD-020 MSL Level 1, enabling lead-free reflow up to 260 °C without moisture sensitivity concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - Maximum continuous reverse working voltage before clamping begins; defines safe operating margin for 12 V/24 V/48 V systems with headroom. |
| VBR (min/max) | 189 V / 209 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on during fast-rising transients ≥1 kV/µs. |
| VC @ IPPM | 275 V at 2.2 A (10/1000 µs) - Clamped voltage seen by protected IC; limits stress on downstream 300 V-rated components. |
| PPPM | 600 W - Peak surge power handling capability; sustains 10/1000 µs waveform with 0.01% duty cycle without degradation. |
| ID @ VWM | 1.0 µA - Reverse leakage at rated stand-off; negligible bias current impact on high-impedance sensor or communication lines. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on 5.0 mm × 5.0 mm copper pads; enables thermal derating above 25 °C ambient. |
| AEC-Q101 | Qualified - Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile gull-wing lead frame with matte tin-plated terminals. Meets UL 94 V-0 flammability rating and JESD22-B102 solderability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Terminal 1 (cathode band side) | Bidirectional device - no polarity marking; either terminal serves as anode or cathode depending on transient polarity. |
| Cathode | Terminal 2 (opposite cathode band side) | Same physical terminal as Anode in bidirectional configuration; symmetrical conduction eliminates orientation dependency during placement. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 surges in automotive and industrial environments. |
| AEC-Q101 qualification | Validates reliability for automotive under-hood and chassis-mounted applications requiring extended temperature cycling and humidity exposure. |
| MSL Level 1, 260 °C peak reflow | Supports standard lead-free SMT assembly without baking or special handling; compatible with high-volume automated placement. |
| Glass-passivated junction | Provides stable VBR tolerance and low leakage over lifetime, critical for long-term field reliability in unattended equipment. |
| UL 497B recognized (QVGQ2) | Meets safety agency requirements for telecom and industrial signal line protectors, simplifying end-equipment certification. |
Applications
| Automotive Sensor Interface | Industrial PLC Analog Input |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and inductive switching transients in vehicle ECUs. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at connector entry point to shunt surge energy before reaching sensitive ASICs. Use Value: Limits transient voltage to ≤275 V while maintaining <1.0 µA leakage at 170 V system rail, preserving signal integrity and ADC accuracy. |
Use Scenario: Safeguarding 4–20 mA current loop inputs and ±10 V analog inputs in programmable logic controllers exposed to motor drive noise and relay bounce. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side signal conditioning stage, coordinated with series impedance and filtering. Use Value: Withstands repeated 600 W surges without parameter shift, ensuring consistent protection across 10+ year industrial deployments. |
| Telecom Line Card Protection | Consumer Power Adapter ESD Guard |
Use Scenario: Secondary-level surge suppression on Ethernet PHY interface lines (e.g., PoE-powered devices) subjected to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Fast-response TVS placed after primary gas discharge tube (GDT) to handle residual high-frequency energy. Use Value: Sub-nanosecond response time and 275 V clamping prevent latch-up in 3.3 V/5 V PHY ICs during combined lightning and EFT events. |
Use Scenario: Input-stage ESD protection on AC-DC adapter secondary-side DC output rails (e.g., USB-C PD 20 V output) per IEC 61000-4-2 Level 4. IC Role / Device Role / Timing Role: Low-leakage bidirectional clamp between VOUT and GND, sized to absorb 15 kV contact discharge without degradation. Use Value: 1.0 µA leakage at 170 V ensures no measurable impact on no-load regulation or standby power consumption. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170CA | Same VWM/VBR/VC ratings but lower PPPM = 600 W (same), yet higher RθJA = 110 °C/W vs. 100 °C/W; non-AEC-Q101 rated. | Targeted at commercial/industrial use only; not validated for automotive temperature cycling or humidity life testing. | Select SMBJ170CA only when AEC-Q101 compliance is unnecessary and board layout allows slightly higher thermal rise. |
| SMCJ170CA | Higher PPPM = 1500 W, larger SMC (DO-214AB) package (7.11 mm × 6.22 mm), RθJA = 35 °C/W; same VWM/VBR/VC. | Used where higher single-pulse energy absorption is required (e.g., DC bus protection), but occupies >2× PCB area. | Choose SMCJ170CA when system-level surge tests exceed 600 W or when thermal constraints demand lower junction rise. |
Compared with SMBJ170CA and SMCJ170CA, the SMBG170CA-E3/52 uniquely balances AEC-Q101 qualification, compact SMBG footprint, and verified 600 W clamping performance - making it optimal for space-constrained automotive modules needing certified reliability.
Availability
SMBG170CA-E3/52 is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O conditioning, and telecom line card surge suppression requiring stable component supply, RoHS-compliant sourcing, and AEC-Q101 traceability.
Supply support for SMBG170CA-E3/52 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 SMBG series was engineered for high-reliability surface-mount transient suppression in automotive and industrial environments, prioritizing AEC-Q101 compliance, low-profile packaging, and repeatable clamping performance under thermal stress.
FAQ
What is the breakdown voltage range of the SMBG170CA-E3/52?
The SMBG170CA-E3/52 has a minimum breakdown voltage (VBR) of 189 V and a maximum of 209 V at 1 mA test current, as specified in the Vishay datasheet (Document Number: 88456). This range ensures consistent clamping onset across production lots and temperature extremes, critical for protecting 170 V-rated systems without premature conduction.
Is the SMBG170CA-E3/52 suitable for automotive applications?
Yes, the SMBG170CA-E3/52 is AEC-Q101 qualified and rated for operation from -55 °C to +150 °C, making it suitable for automotive applications including engine control units, ADAS sensor interfaces, and body electronics. Its UL 497B recognition further supports use in automotive telecom and infotainment subsystems.
What does the "CA" suffix indicate in SMBG170CA-E3/52?
The "CA" suffix denotes a bidirectional configuration - meaning the SMBG170CA-E3/52 provides symmetrical transient suppression in both polarities, with identical VBR, VC, and leakage characteristics regardless of voltage polarity. This eliminates orientation concerns during PCB placement and simplifies design for AC-coupled or differential signal lines.
How does the SMBG170CA-E3/52 compare to unidirectional variants like SMBG170A-E3/52?
Unlike the unidirectional SMBG170A-E3/52, the SMBG170CA-E3/52 supports clamping in both directions and has no cathode marking. It exhibits identical VWM (170 V) and VBR (189–209 V) but lacks forward surge rating (IFSM = 100 A), as bidirectional devices do not conduct steady-state forward current. Its use case centers on AC or floating signal protection.
What is the maximum clamping voltage of the SMBG170CA-E3/52 under surge conditions?
The SMBG170CA-E3/52 has a maximum clamping voltage (VC) of 275 V at 2.2 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during a 600 W transient event.
SMBG170CA-E3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-215AA, SMB 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):
- 2.2A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMBG)
SMBG170CA-E3/52 FAQ
1.How can I place an order for SMBG170CA-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG170CA-E3/52 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 SMBG170CA-E3/52 reliable?
The price and inventory of SMBG170CA-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG170CA-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBG170CA-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG170CA-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG170CA-E3/52?
SMBG170CA-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG170CA-E3/52 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 SMBG170CA-E3/52?
For technical support, including SMBG170CA-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG170CA-E3/52 requirements.
6.How does Aetrix verify that SMBG170CA-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG170CA-E3/52 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 SMBG170CA-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBG170CA-E3/52?
All SMBG170CA-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG170CA-E3/52, 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 SMBG170CA-E3/52 part is unused and in its original packaging.
Return procedure for SMBG170CA-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG170CA-E3/52 Tags
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