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Vishay General Semiconductor - Diodes Division SMBG170A-M3/52
- Part No.:
- SMBG170A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG170A-M3/52.pdf
- Description:
- TVS DIODE 170VWM 275VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,638
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Product details
Overview
SMBG170A-M3/52 from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, rated for 170 V stand-off voltage (VWM), 189–209 V breakdown voltage (VBR), 2.2 A peak pulse current (IPPM), and 600 W peak pulse power (10/1000 μs). It protects automotive power rails and industrial sensor interfaces against ESD and inductive switching transients.
For engineers reviewing the SMBG170A-M3/52 datasheet, SMBG170A-M3/52 pinout, SMBG170A-M3/52 application, or SMBG170A-M3/52 equivalent, this page delivers verified electrical specs, AEC-Q101 qualification status, halogen-free RoHS compliance (M3 suffix), thermal resistance (RθJA = 100 °C/W), and junction temperature range (−55 to +150 °C) - all critical for automotive-grade surge protection design.
Technical Context
This TVS diode operates as a clamping device in parallel with sensitive circuitry, conducting only when reverse voltage exceeds VBR (189–209 V), limiting transient-induced overvoltage to ≤275 V at 2.2 A. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1 ns).
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (peak reflow 260 °C), supports 100 A non-repetitive forward surge (8.3 ms half-sine), and delivers low incremental surge resistance - key for robust protection of 12 V/24 V automotive power domains and industrial I/O lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 189 V / 209 V - guaranteed breakdown threshold at 1 mA test current, defining turn-on precision |
| VC @ IPPM | 275 V - clamped voltage during 2.2 A 10/1000 μs surge, directly limiting downstream stress |
| PPPM | 600 W - peak transient power handling capability under standardized waveform |
| IFSM | 100 A - surge current rating for 8.3 ms half-sine, supporting load-dump immunity |
| TJ max. | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| RθJA | 100 °C/W - thermal resistance from junction to ambient on 5.0 mm × 5.0 mm copper pads, guiding PCB thermal layout |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (unidirectional) | Connected to ground or lower-potential rail; defines current path during clamping |
| Cathode | Reverse-biased terminal (marked with band) | Connected to protected line; conducts when transient exceeds VBR, shunting energy to ground |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and body electronics |
| Halogen-free & RoHS compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive production |
| 600 W peak pulse power (10/1000 μs) | Provides high-energy transient suppression without derating in standard PCB layouts |
| Low incremental surge resistance | Minimizes clamping voltage overshoot during fast-rising transients like ISO 7637-2 pulses |
| MSL Level 1 moisture sensitivity | Enables direct placement into reflow without baking, reducing manufacturing overhead |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 24 V battery-fed ECUs from load dump and ISO 7637-2 pulse 5a transients. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and chassis ground to clamp surges above 170 V. Use Value: Limits clamped voltage to ≤275 V at 2.2 A, preventing damage to downstream DC/DC converters and microcontrollers. | Use Scenario: Safeguarding analog inputs of PLC I/O modules from field-wiring induced transients. IC Role / Device Role / Timing Role: Parallel-connected TVS on 0–10 V or 4–20 mA signal lines to absorb coupling noise and ESD. Use Value: Sub-1 ns response and <1.0 μA leakage at 170 V ensure signal integrity and minimal offset error in precision measurement circuits. |
| Telecom Power Supply Input | Motor Drive Gate Driver Protection |
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters powering telecom base station controllers. IC Role / Device Role / Timing Role: Standoff-rated TVS across bulk capacitor output to suppress line-induced spikes. Use Value: 170 V VWM matches typical 24 V/48 V telecom supply rails; 600 W rating handles repetitive surge events in outdoor deployments. | Use Scenario: Clamping gate-source voltage spikes on high-side MOSFETs in BLDC motor inverters. IC Role / Device Role / Timing Role: TVS placed between gate and source to limit dv/dt-induced Miller turn-on risk. Use Value: Tight VBR tolerance (189–209 V) ensures predictable clamping without false triggering during PWM transitions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG170AHE3/52 | AEC-Q101 qualified; same VWM/VBR/PPPM, but E3 suffix denotes standard RoHS (not halogen-free) | Preferred where halogen-free requirement is not mandated; identical thermal and electrical performance | Select SMBG170A-M3/52 when halogen-free compliance is required per IPC-1752 or automotive OEM specifications. |
| SMBJ170A-M3/52 | Same VWM (170 V), but SMBJ package (DO-214AB) has higher RθJA (110 °C/W) and lower IPPM (2.0 A) | Used where legacy SMBJ footprint exists; lower surge margin requires larger copper area for thermal management | Choose SMBG170A-M3/52 for superior thermal performance (RθJA = 100 °C/W) and higher surge current headroom in space-constrained designs. |
Compared with SMBG170AHE3/52 and SMBJ170A-M3/52, SMBG170A-M3/52 uniquely combines halogen-free construction, AEC-Q101 qualification, and optimized thermal resistance - making it the preferred choice for next-generation automotive and industrial systems requiring both environmental compliance and high-reliability surge immunity.
Availability
SMBG170A-M3/52 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, and telecom power supply input stabilization requiring stable component supply across long-life product cycles.
Supply support for SMBG170A-M3/52 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, and protection devices with broad automotive and industrial qualification coverage.
The SMBG series was developed specifically for high-reliability transient suppression in space-constrained, thermally demanding applications - emphasizing AEC-Q101 compliance, low-profile packaging, and repeatable clamping performance across temperature.
FAQ
What is the clamping voltage of SMBG170A-M3/52 at its rated peak pulse current?
The SMBG170A-M3/52 has a maximum clamping voltage (VC) of 275 V at its specified peak pulse current (IPPM) of 2.2 A under a 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBG170A-M3/52 maintains this clamping performance across its full operating temperature range (−55 to +150 °C), ensuring consistent protection in harsh environments.
Is SMBG170A-M3/52 suitable for automotive applications?
Yes, SMBG170A-M3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and body electronics. Its 170 V stand-off voltage aligns with 24 V system architectures, while its 100 A 8.3 ms forward surge rating supports load-dump immunity. The M3 suffix confirms halogen-free, RoHS-compliant construction meeting Tier 1 OEM material requirements. SMBG170A-M3/52 is validated for reliability under temperature cycling, humidity bias, and mechanical shock per AEC-Q101 test conditions.
What does the "M3" suffix indicate in SMBG170A-M3/52?
The "M3" suffix in SMBG170A-M3/52 denotes halogen-free, RoHS-compliant construction with industrial-grade qualification. Per Vishay's ordering nomenclature, M3 indicates matte tin-plated leads, JESD 201 Class 2 whisker resistance, and compliance with IPC-1752 material declaration standards. It distinguishes SMBG170A-M3/52 from E3 (standard RoHS) and HM3 (AEC-Q101 + halogen-free) variants. The SMBG170A-M3/52 retains full electrical and thermal specifications of the base SMBG170A family.
How does SMBG170A-M3/52 differ from SMBJ170A-M3/52?
SMBG170A-M3/52 uses the SMBG (DO-215AA) package, while SMBJ170A-M3/52 uses SMBJ (DO-214AB); the SMBG variant offers lower thermal resistance (RθJA = 100 °C/W vs. 110 °C/W) and higher peak pulse current (2.2 A vs. 2.0 A) under identical test conditions. Both share 170 V VWM and AEC-Q101 qualification, but SMBG170A-M3/52 provides better thermal performance and surge margin in compact layouts. The SMBG170A-M3/52 also features tighter mounting pad recommendations (0.2" × 0.2") for optimal power dissipation.
What is the maximum reverse leakage current for SMBG170A-M3/52 at rated stand-off voltage?
The SMBG170A-M3/52 exhibits a maximum reverse leakage current (ID) of 1.0 μA at its rated stand-off voltage (VWM) of 170 V and TA = 25 °C. This ultra-low leakage ensures minimal power loss and no measurable impact on high-impedance sensing nodes or battery-powered systems. Leakage remains below 5.0 μA up to +125 °C, maintaining signal integrity in extended-temperature industrial applications. The SMBG170A-M3/52 achieves this via glass-passivated junction technology, which stabilizes leakage across life and temperature.
SMBG170A-M3/52 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:
- 1
- Bidirectional Channels:
- -
- 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:
- -65°C ~ 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG170A-M3/52 FAQ
1.How can I place an order for SMBG170A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG170A-M3/52 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 SMBG170A-M3/52 reliable?
The price and inventory of SMBG170A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG170A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBG170A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG170A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG170A-M3/52?
SMBG170A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG170A-M3/52 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 SMBG170A-M3/52?
For technical support, including SMBG170A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG170A-M3/52 requirements.
6.How does Aetrix verify that SMBG170A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG170A-M3/52 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 SMBG170A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBG170A-M3/52?
All SMBG170A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG170A-M3/52, 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 SMBG170A-M3/52 part is unused and in its original packaging.
Return procedure for SMBG170A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG170A-M3/52 Tags
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