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Vishay General Semiconductor - Diodes Division SMBG170AHE3/5B
- Part No.:
- SMBG170AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG170AHE3/5B.pdf
- Description:
- TVS DIODE 170VWM 275VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,214
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Product details
Overview
SMBG170AHE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMBG (DO-215AA) package, designed for robust overvoltage protection of DC power rails and signal 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), clamping voltage of 275 V at 2.2 A, and AEC-Q101 qualification for automotive use.
For engineers reviewing the SMBG170AHE3/5B datasheet, SMBG170AHE3/5B pinout, SMBG170AHE3/5B application, or SMBG170AHE3/5B equivalent, key selection criteria include clamping performance under 10/1000 µs surge, junction temperature derating above 25 °C, unidirectional polarity marking, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse voltage exceeds VBR, it avalanches to divert transient energy away from downstream circuitry. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM), while the low incremental surge resistance enables tight clamping during fast transients.
The device is rated for 150 °C maximum junction temperature and exhibits thermal resistance of 100 °C/W (junction-to-ambient) and 20 °C/W (junction-to-lead). It meets J-STD-020 MSL Level 1 and supports lead-free reflow up to 260 °C peak, with matte tin-plated leads compliant to JESD 22-B102 whisker testing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin. |
| VBR (min/max) | 189 V / 209 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across production lot. |
| VC @ IPPM | 275 V at 2.2 A - Clamped voltage during full 600 W surge; determines protected IC's voltage stress limit. |
| PPPM | 600 W - Peak pulse power handling per 10/1000 µs waveform; validates immunity to IEC 61000-4-5 Level 4 surges. |
| IFSM | 100 A - Non-repetitive forward surge rating (8.3 ms half-sine); supports inrush current suppression in power inputs. |
| TJ max | 150 °C - Maximum junction temperature; sets thermal design boundary for PCB copper pad sizing and ambient derating. |
| Leakage @ VWM | <1.0 µA - Ultra-low reverse leakage preserves battery life and signal integrity in high-impedance circuits. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with cathode band marking. Dimensions: 6.48 mm × 3.94 mm × 2.16 mm (L × W × H), compatible with standard 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path (unidirectional) | Connected to system ground or lower-potential node; carries surge current during clamping. |
| Cathode | Reverse-biased input (unidirectional) | Connected to protected line (e.g., 170 V rail); marked by visible band; avalanche initiates here. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TCT, and ESD; supports under-hood and infotainment applications. |
| Glass passivated junction | Ensures stable VBR tolerance and long-term reliability under thermal cycling and humidity exposure. |
| 600 W peak pulse power (10/1000 µs) | Provides proven protection against lightning-induced surges and inductive switching transients per IEC 61000-4-5. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free assembly without moisture-related popcorning or delamination. |
| Matte tin-plated leads | Guarantees solderability per J-STD-002 and eliminates whisker growth risk in high-reliability systems. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V–24 V battery-fed ECUs and ADAS modules from load dump and alternator ripple. IC Role / Device Role / Timing Role: Shunt clamping element placed between supply rail and ground, responding within <1 ns to transients exceeding 170 V. Use Value: Limits voltage seen by MCU and CAN transceivers to ≤275 V during 600 W surges, preventing latch-up or gate oxide damage. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation PLCs exposed to relay coil kickback. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; this unidirectional SMBG170AHE3/5B protects grounded-signal lines where polarity is fixed. Use Value: Maintains signal fidelity with <1.0 µA leakage at 170 V, while clamping 10/1000 µs spikes to prevent ADC saturation or op-amp rail-to-rail excursion. |
| Telecom DC Power Input Protection | OEM Power Supply Output Stage |
Use Scenario: Front-end surge suppression on 48 V telecom rectifier outputs feeding base station RF modules. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC bus, coordinated with upstream MOVs and fuses. Use Value: Withstands repeated 600 W pulses at 0.01% duty cycle, enabling compliance with GR-1089-CORE immunity requirements. | Use Scenario: Secondary-side output protection in industrial AC/DC power supplies delivering regulated 170 V DC to motor drives. IC Role / Device Role / Timing Role: Final-stage TVS placed immediately after output filter capacitor to suppress switching noise and fault-induced overshoot. Use Value: 20 °C/W junction-to-lead thermal resistance allows direct mounting to heatsinked ground planes, sustaining 100 A surge without thermal runaway. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBG170AE3/5B | No AEC-Q101 qualification; identical electrical specs and SMBG package. | Not suitable for automotive OEM or Tier-1 designs requiring automotive-grade reliability validation. | Select SMBG170AE3/5B only for cost-sensitive industrial or consumer applications where AEC-Q101 is not mandated. |
| SMBJ170AHE3/5B | Same VWM/VBR/VC, but in larger SMB (DO-214AA) package with higher RθJA (125 °C/W) and lower IPPM (2.0 A). | Lower power density and reduced surge current capability; requires larger PCB area. | Choose SMBJ170AHE3/5B only if legacy layout uses SMB footprint or if thermal constraints permit higher junction rise. |
Compared with SMBG170AE3/5B, the SMBG170AHE3/5B adds automotive qualification without electrical trade-offs; versus SMBJ170AHE3/5B, it delivers 10% higher surge current in 25% smaller footprint-critical for space-constrained automotive modules.
Availability
SMBG170AHE3/5B is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, telecom power inputs, and OEM power supply output stages requiring stable component supply and AEC-Q101 assurance.
Supply support for SMBG170AHE3/5B 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMBG series was engineered for high-power-density transient suppression in automotive and industrial environments, prioritizing low clamping ratio, AEC-Q101 compliance, and robust SMT manufacturability.
FAQ
What is the clamping voltage of SMBG170AHE3/5B at its rated peak pulse current?
The SMBG170AHE3/5B has a maximum clamping voltage (VC) of 275 V at its peak pulse current (IPPM) of 2.2 A, measured under the standardized 10/1000 µs waveform. This value defines the upper voltage limit imposed on protected circuitry during a full 600 W transient event and is confirmed in the Vishay datasheet revision 09-Jan-2024, page 2.
Is SMBG170AHE3/5B suitable for automotive applications?
Yes, SMBG170AHE3/5B is AEC-Q101 qualified, as explicitly stated in the Vishay datasheet (page 2, Notes section and Ordering Information table). The "HE3" suffix denotes RoHS-compliant, AEC-Q101-qualified construction, making SMBG170AHE3/5B appropriate for automotive powertrain, body electronics, and ADAS modules requiring validated reliability.
What does the "5B" suffix indicate in SMBG170AHE3/5B?
The "5B" suffix in SMBG170AHE3/5B specifies the packaging configuration: 13-inch diameter plastic tape and reel, with a base quantity of 3200 units per reel. This differs from "52", which denotes 7-inch reels with 750 units. Both share identical electrical and mechanical specifications; only the delivery format varies.
How does the SMBG package differ from SMB in terms of thermal performance?
The SMBG (DO-215AA) package used by SMBG170AHE3/5B offers lower thermal resistance than standard SMB (DO-214AA): RθJL is 20 °C/W versus ~25 °C/W for SMB, and RθJA is 100 °C/W versus 125 °C/W. This enables SMBG170AHE3/5B to sustain higher surge repetition rates and operate at elevated ambient temperatures without exceeding 150 °C junction limit.
Can SMBG170AHE3/5B be used in bidirectional protection circuits?
No, SMBG170AHE3/5B is a unidirectional TVS diode, as indicated by the "A" (not "CA") suffix and cathode band marking. For bidirectional operation, Vishay specifies parts with "CA" suffix (e.g., SMBG170CA). Using SMBG170AHE3/5B in a bidirectional configuration would result in forward conduction during negative transients, potentially damaging the device or failing to protect.
SMBG170AHE3/5B 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:
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG170AHE3/5B FAQ
1.How can I place an order for SMBG170AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG170AHE3/5B 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 SMBG170AHE3/5B reliable?
The price and inventory of SMBG170AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG170AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG170AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG170AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG170AHE3/5B?
SMBG170AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG170AHE3/5B 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 SMBG170AHE3/5B?
For technical support, including SMBG170AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG170AHE3/5B requirements.
6.How does Aetrix verify that SMBG170AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG170AHE3/5B 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 SMBG170AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG170AHE3/5B?
All SMBG170AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG170AHE3/5B, 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 SMBG170AHE3/5B part is unused and in its original packaging.
Return procedure for SMBG170AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG170AHE3/5B Tags
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