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Vishay General Semiconductor - Diodes Division SMBG170CAHE3/5B
- Part No.:
- SMBG170CAHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG170CAHE3/5B.pdf
- Description:
- TVS DIODE 170VWM 275VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,970
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Product details
Overview
SMBG170CAHE3/5B 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 reverse leakage at VWM, and 275 V clamping voltage (VC) at 2.2 A peak pulse current - used to protect automotive sensor interfaces and industrial I/O circuits.
For engineers reviewing the SMBG170CAHE3/5B datasheet, SMBG170CAHE3/5B pinout, SMBG170CAHE3/5B application, or SMBG170CAHE3/5B equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C junction temperature rating, low incremental surge resistance, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This bidirectional TVS operates symmetrically in both polarities, with identical VBR, VC, and IPPM specifications for positive and negative surges. Its glass-passivated junction ensures stable breakdown characteristics and low leakage across -55 °C to +150 °C operating range.
The device complies with ANSI/IEEE C62.35 for surge protection and meets J-STD-020 MSL Level 1 (260 °C peak reflow), enabling robust solderability without moisture sensitivity concerns. Its thermal resistance (RθJA = 100 °C/W) is specified with 0.2" × 0.2" copper pads per terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - maximum continuous reverse working voltage before clamping begins |
| VBR (min/max) | 189 V / 209 V at 1 mA - guaranteed breakdown threshold for reliable overvoltage detection |
| VC @ IPPM | 275 V at 2.2 A - clamped voltage during 10/1000 µs surge, limiting stress on downstream ICs |
| PPPM | 600 W - peak pulse power handling under standard 10/1000 µs waveform at 0.01% duty cycle |
| ID @ VWM | <2.2 µA - ultra-low leakage ensures minimal standby power loss in high-impedance circuits |
| TJ max. | +150 °C - extended junction temperature rating supports under-hood automotive and industrial environments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.57 mm × 3.94 mm × 2.10 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Surge current entry (negative polarity) | One terminal of symmetrical junction; accepts transient energy in either direction |
| Cathode | Surge current entry (positive polarity) | Second terminal of symmetrical junction; completes bidirectional conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC-coupled or floating signal lines without polarity constraints |
| AEC-Q101 qualification | Validates suitability for automotive applications including engine control, ADAS sensors, and infotainment I/O |
| 600 W peak pulse power | Withstands IEC 61000-4-5 Level 4 (4 kV) surges when mounted on recommended 5.0 mm × 5.0 mm pads |
| Low clamping ratio (VC/VBR ≈ 1.37) | Minimizes overvoltage margin between breakdown and clamping, improving protected circuit margin |
| MSL Level 1 rating | Allows unlimited floor life and single-reflow processing without baking, reducing manufacturing complexity |
Applications
| Automotive Sensor Protection | Industrial Digital I/O |
|---|---|
Use Scenario: Protecting LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector interface to clamp transients before they reach ASIC or MCU input pins. Use Value: Limits induced voltage to ≤275 V during 10/1000 µs surges, preventing latch-up or gate oxide damage in AEC-Q100 qualified microcontrollers. | Use Scenario: Safeguarding PLC digital input modules against field-wiring induced surges and relay coil flyback. IC Role / Device Role / Timing Role: Primary surge suppression element on 24 V DC input channels, positioned upstream of optocoupler or Schmitt trigger inputs. Use Value: Maintains <2.2 µA leakage at 170 V, avoiding false triggering in high-impedance sensing circuits while surviving repeated 600 W pulses. |
| Telecom Line Interface | Consumer USB/Display Port ESD |
Use Scenario: Transient protection on RS-485/RS-422 differential pairs in base station backhaul equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Common-mode TVS pair (one per line) referenced to ground, leveraging symmetrical breakdown for balanced clamping. Use Value: Achieves 275 V clamping at 2.2 A with <1 ns response time, preserving signal integrity up to 10 Mbps without distortion. | Use Scenario: Board-level ESD protection for HDMI, DisplayPort, or USB 2.0 data lanes in set-top boxes and monitors. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF at 0 V) bidirectional clamp placed adjacent to connector to shunt HBM ±8 kV discharges. Use Value: Delivers sub-100 ps response with 275 V clamping, meeting IEC 61000-4-2 Level 4 without degrading 480 Mbps signal rise times. |
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 (170 V), but lower PPPM = 600 W (same rating), slightly higher VC = 285 V at 2.1 A; SMB (DO-214AA) package, 0.2 mm taller | Less optimized for high-density layouts due to larger footprint; not AEC-Q101 qualified | Select SMBJ170CA only if AEC-Q101 compliance is not required and existing PCB uses SMB pad layout |
| SMCJ170CA | Same VWM and VBR, but PPPM = 1500 W; larger SMC (DO-214AB) package; RθJA = 25 °C/W vs. 100 °C/W | Used where higher surge energy absorption is needed (e.g., power supply inputs), but requires more board space and thermal management | Choose SMCJ170CA for primary-side AC/DC surge protection; SMBG170CAHE3/5B remains optimal for space-constrained signal-line protection |
Compared with SMBJ170CA and SMCJ170CA, SMBG170CAHE3/5B uniquely combines AEC-Q101 qualification, compact SMBG footprint, and 100 °C/W thermal resistance - making it the preferred choice for automotive and industrial signal-path protection where reliability, size, and thermal performance are jointly constrained.
Availability
SMBG170CAHE3/5B is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line drivers, and consumer display port protection requiring stable component supply and long-term lifecycle support.
Supply support for SMBG170CAHE3/5B 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 is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-reliability transient suppression in automotive, industrial, and communications systems where bidirectional clamping and AEC-Q101 compliance are mandatory.
FAQ
What is the clamping voltage of SMBG170CAHE3/5B and how is it measured?
The SMBG170CAHE3/5B has a maximum clamping voltage (VC) of 275 V, measured at a peak pulse current (IPPM) of 2.2 A using the standardized 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range (-55 °C to +150 °C) and reflects the actual voltage seen by protected circuitry during surge events - critical for ensuring downstream ICs remain within absolute maximum ratings. The SMBG170CAHE3/5B achieves this with low incremental surge resistance.
Is SMBG170CAHE3/5B suitable for automotive applications?
Yes, SMBG170CAHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and chassis-mounted modules. Its construction includes glass-passivated junctions, matte tin-plated leads compliant with J-STD-002, and MSL Level 1 reflow capability - all verified per AEC stress test requirements. The SMBG170CAHE3/5B is commonly deployed in ADAS camera modules, body control units, and engine management sensor interfaces.
How does the bidirectional design of SMBG170CAHE3/5B affect its circuit implementation?
The bidirectional design of SMBG170CAHE3/5B eliminates polarity marking and enables direct placement across floating or AC-coupled nodes - such as RS-485 differential pairs or transformer-isolated Ethernet PHY lines - without risk of reverse connection. Unlike unidirectional TVS diodes, SMBG170CAHE3/5B provides identical VBR, VC, and IPPM in both directions, simplifying schematic capture and layout while maintaining consistent protection margins regardless of signal polarity or common-mode swing.
What is the thermal resistance of SMBG170CAHE3/5B and how does it impact PCB layout?
SMBG170CAHE3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay specification; reducing pad area increases thermal impedance and risks exceeding the 150 °C maximum junction temperature during repetitive surges. For SMBG170CAHE3/5B, maintaining full copper pour under both terminals is essential to sustain 600 W pulse capability in real-world conditions.
Does SMBG170CAHE3/5B have any special handling or packaging requirements?
No special handling is required: SMBG170CAHE3/5B is shipped in 13" diameter plastic tape and reel (3200 pcs/reel), with MSL Level 1 rating permitting indefinite floor life and single-reflow processing without pre-baking. The device uses RoHS-compliant, halogen-free molding compound (per Vishay HE3 suffix definition) and matte tin-plated leads qualified per JESD 22-B102 whisker testing. These attributes make SMBG170CAHE3/5B compatible with standard SMT assembly lines and high-reliability production environments.
SMBG170CAHE3/5B 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG170CAHE3/5B FAQ
1.How can I place an order for SMBG170CAHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG170CAHE3/5B 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 SMBG170CAHE3/5B reliable?
The price and inventory of SMBG170CAHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG170CAHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG170CAHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG170CAHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG170CAHE3/5B?
SMBG170CAHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG170CAHE3/5B 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 SMBG170CAHE3/5B?
For technical support, including SMBG170CAHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG170CAHE3/5B requirements.
6.How does Aetrix verify that SMBG170CAHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG170CAHE3/5B 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 SMBG170CAHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG170CAHE3/5B?
All SMBG170CAHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG170CAHE3/5B, 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 SMBG170CAHE3/5B part is unused and in its original packaging.
Return procedure for SMBG170CAHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG170CAHE3/5B Tags
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