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Vishay General Semiconductor - Diodes Division SMBG170CAHE3/52
- Part No.:
- SMBG170CAHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG170CAHE3/52.pdf
- Description:
- TVS DIODE 170VWM 275VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,620
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Product details
Overview
SMBG170CAHE3/52 from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for high-energy surge protection of sensitive electronics. It features a 170 V stand-off voltage (VWM), 189–209 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 µs), clamping voltage of 275 V at 2.2 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMBG170CAHE3/52 datasheet, SMBG170CAHE3/52 pinout, SMBG170CAHE3/52 application, or SMBG170CAHE3/52 equivalent, key selection criteria include bidirectional clamping capability, junction temperature range (−55 °C to +150 °C), low incremental surge resistance, UL 94 V-0 molding compound, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transients, leveraging an avalanche breakdown mechanism to shunt surge current away from protected circuitry. Its bidirectional symmetry ensures identical clamping behavior in both polarities, eliminating polarity concerns in AC-coupled or differential signal lines.
The SMBG170CAHE3/52 uses a glass-passivated silicon junction for stable, repeatable breakdown characteristics and low leakage (<1.0 µA at VWM). Thermal resistance is rated at RθJA = 100 °C/W (on 5.0 mm × 5.0 mm pads) and RθJL = 20 °C/W, supporting reliable operation under repetitive surge conditions up to 0.01% duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - Maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 12 V–48 V DC bus or 100 VAC line applications. |
| VBR (min/max) | 189 V / 209 V at 1 mA - Confirmed breakdown threshold range; ensures predictable turn-on across manufacturing lot and temperature. |
| VC @ IPPM | 275 V at 2.2 A - Clamped voltage during 10/1000 µs surge; limits downstream stress to <275 V under full-rated 600 W pulse. |
| PPPM | 600 W - Peak pulse power handling per JEDEC standard; supports IEC 61000-4-5 Level 4 (4 kV/2 Ω) surge immunity when properly laid out. |
| TJ Range | −55 °C to +150 °C - Full automotive-grade junction temperature range; enables deployment in engine control units, ADAS sensors, and under-hood modules. |
| Package | SMBG (DO-215AA) - Surface-mount gull-wing package with 5.97 mm × 4.06 mm footprint; optimized for high-volume pick-and-place and reflow compatibility. |
| AEC-Q101 | Qualified - Validated for automotive reliability including HTOL, TC, UHAST, and ESD; meets stress test requirements for Grade 0 and Grade 1 applications. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount gull-wing configuration with two terminals. Molding compound meets UL 94 V-0; matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards. No polarity marking - bidirectional symmetry confirmed per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (symmetrical) | Bidirectional surge path | Either terminal serves as input/output; no cathode band marking required; identical clamping performance in both directions. |
| Leads (both) | Thermal and electrical interface | Connect to ≥5.0 mm × 5.0 mm copper pads per terminal to achieve rated 600 W pulse power and thermal derating per Fig. 2. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 surges without external series impedance in many 24–48 V industrial and automotive circuits. |
| Glass-passivated junction | Ensures long-term stability of VBR and low leakage (<1 µA) over temperature and lifetime, critical for battery-powered sensor nodes. |
| AEC-Q101 qualification | Validates suitability for automotive ECUs, infotainment systems, and ADAS camera modules requiring zero-defect reliability. |
| MSL Level 1 (260 °C peak) | Supports standard lead-free reflow profiles without moisture sensitivity concerns; eliminates bake requirements pre-assembly. |
| UL 94 V-0 flammability rating | Molding compound self-extinguishes within 10 seconds after flame removal - satisfies safety compliance for enclosed automotive and industrial enclosures. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN/CAN transceivers and microcontrollers connected to 12 V or 24 V vehicle battery rails from load dump and alternator ripple. IC Role / Device Role / Timing Role: Bidirectional TVS placed between power rail and ground, clamping transients before they reach downstream ICs. Use Value: Limits voltage excursions to ≤275 V during 100 V/50 ms load dump events, preserving integrity of 3.3 V/5 V logic interfaces without additional filtering. | Use Scenario: Shielding analog outputs (e.g., 4–20 mA current loops) and digital I/O of PLC analog input modules from field-induced surges. IC Role / Device Role / Timing Role: Primary surge shunt element at connector entry point, absorbing energy from induced lightning transients on long cable runs. Use Value: Withstands repeated 600 W pulses without degradation, enabling >100,000 surge cycles in harsh factory environments per AEC-Q101 accelerated testing. |
| Telecom Data Line Surge Suppression | Consumer Device USB/DisplayPort ESD Hardening |
Use Scenario: Safeguarding Ethernet PHYs and PoE injectors against induced surges on twisted-pair cabling in outdoor telecom cabinets. IC Role / Device Role / Timing Role: Common-mode clamp across differential pairs, referenced to chassis ground via low-inductance layout. Use Value: 275 V clamping voltage ensures PHYs with 30 V absolute maximum ratings remain within safe operating area during 1 kV/42 Ω IEC 61000-4-5 tests. | Use Scenario: Adding secondary-level surge protection on USB-C or DisplayPort receptacles in laptops and docking stations exposed to user-handling ESD. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF typical) bidirectional clamp placed after primary ESD array to handle higher-energy events. Use Value: Glass-passivated junction delivers <1 µA leakage at 170 V, preventing standby current drain while maintaining fast response (<1 ns) to 8 kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG170CA-M3/52 | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification. | No functional difference; selected where halogen-free material compliance is mandated by OEM or regional regulation. | Choose SMBG170CA-M3/52 when halogen-free bill-of-materials is required; otherwise SMBG170CAHE3/52 offers same performance with standard RoHS compliance. |
| SMAJ170CA-E3/52 | Lower 400 W PPPM, SMA package (smaller footprint, higher RθJA = 140 °C/W), same VWM/VBR range. | Not suitable for 600 W surge events; limited to lower-energy IEC 61000-4-2 or 4-4 applications. | Select SMAJ170CA-E3/52 only for space-constrained designs accepting reduced surge margin; SMBG170CAHE3/52 remains preferred for full 600 W compliance. |
Compared with SMBG170CA-M3/52, the SMBG170CAHE3/52 offers identical surge performance with standard RoHS compliance, while SMAJ170CA-E3/52 trades 33% lower pulse power and higher thermal resistance for smaller size - making SMBG170CAHE3/52 optimal for automotive and industrial applications demanding full 600 W capability and AEC-Q101 validation.
Availability
SMBG170CAHE3/52 is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface hardening, telecom data line surge suppression, and consumer device USB/DisplayPort ESD hardening requiring stable component supply and AEC-Q101 traceability.
Supply support for SMBG170CAHE3/52 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 developed for high-power, surface-mount transient suppression in automotive and industrial environments where AEC-Q101 qualification, UL 94 V-0 compliance, and 600 W surge capability are mandatory design requirements.
FAQ
What is the clamping voltage of SMBG170CAHE3/52 at its rated peak pulse current?
The SMBG170CAHE3/52 has a maximum clamping voltage (VC) of 275 V at its peak pulse current (IPPM) of 2.2 A, measured under the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures downstream components see no more than 275 V during a full 600 W surge event. The SMBG170CAHE3/52 achieves this with low incremental surge resistance, minimizing voltage overshoot beyond the clamping plateau.
Is SMBG170CAHE3/52 suitable for automotive applications?
Yes, the SMBG170CAHE3/52 is AEC-Q101 qualified and explicitly rated for automotive use, including under-hood and body-control module applications. Its −55 °C to +150 °C junction temperature range, glass-passivated junction, and UL 94 V-0 molding compound meet stringent automotive reliability and safety requirements. The SMBG170CAHE3/52 is commonly deployed in 12 V/24 V power line protection for ECUs, ADAS cameras, and infotainment systems.
What does the "HE3" suffix indicate in SMBG170CAHE3/52?
The "HE3" suffix in SMBG170CAHE3/52 denotes RoHS-compliant construction with AEC-Q101 qualification. "H" indicates AEC-Q101 qualification, "E3" signifies RoHS compliance and industrial-grade reliability. This distinguishes it from base variants like SMBG170CA-E3 (RoHS, not AEC-Q101) and SMBG170CA-M3 (halogen-free + RoHS + AEC-Q101). The SMBG170CAHE3/52 thus provides certified automotive-grade performance in a standard RoHS-compliant package.
How does SMBG170CAHE3/52 differ from unidirectional SMBG170AHE3/52?
The SMBG170CAHE3/52 is bidirectional, providing symmetrical clamping in both polarities with no cathode marking, whereas SMBG170AHE3/52 is unidirectional and marked with a cathode band. Electrically, the SMBG170CAHE3/52 has identical VWM (170 V) and VBR (189–209 V) but supports AC-coupled or floating signal lines without polarity constraints. The SMBG170CAHE3/52 is preferred for differential buses, transformer-coupled interfaces, and any application where voltage reversal may occur.
What PCB layout guidance applies to SMBG170CAHE3/52 for optimal surge performance?
To achieve the rated 600 W peak pulse power, the SMBG170CAHE3/52 must be mounted on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, as specified in the datasheet. Short, wide traces to ground/power planes minimize inductance, and thermal vias under pads improve heat dissipation. Avoid narrow traces or thermal reliefs that increase impedance - doing so ensures the SMBG170CAHE3/52 clamps at 275 V rather than exceeding it due to parasitic L·di/dt effects.
SMBG170CAHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG170CAHE3/52 FAQ
1.How can I place an order for SMBG170CAHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG170CAHE3/52 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 SMBG170CAHE3/52 reliable?
The price and inventory of SMBG170CAHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG170CAHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG170CAHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG170CAHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG170CAHE3/52?
SMBG170CAHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG170CAHE3/52 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 SMBG170CAHE3/52?
For technical support, including SMBG170CAHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG170CAHE3/52 requirements.
6.How does Aetrix verify that SMBG170CAHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG170CAHE3/52 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 SMBG170CAHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG170CAHE3/52?
All SMBG170CAHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG170CAHE3/52, 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 SMBG170CAHE3/52 part is unused and in its original packaging.
Return procedure for SMBG170CAHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG170CAHE3/52 Tags
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