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Vishay General Semiconductor - Diodes Division SMBG170AHE3/52
- Part No.:
- SMBG170AHE3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG170AHE3/52.pdf
- Description:
- TVS DIODE 170VWM 275VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,399
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Product details
Overview
SMBG170AHE3/52 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), and 600 W peak pulse power (10/1000 μs). It provides clamping at 275 V under 2.2 A peak pulse current and is AEC-Q101 qualified for automotive electronics protection.
For engineers reviewing the SMBG170AHE3/52 datasheet, SMBG170AHE3/52 pinout, SMBG170AHE3/52 application, or SMBG170AHE3/52 equivalent, this device is selected for high-reliability overvoltage suppression in automotive power lines, sensor interfaces, and industrial control I/O where low leakage (<1.0 μA at VWM), fast response, and robust surge handling (100 A IFSM) are critical.
Technical Context
This TVS diode operates as a clamping-type surge protector with unidirectional polarity-cathode-banded end functions as the protected node's return path to ground. Its glass-passivated junction ensures stable VBR tolerance (±5 %) and low incremental surge resistance, enabling consistent clamping performance across repetitive transients.
Designed for surface-mount automated assembly, it meets J-STD-020 MSL Level 1 (260 °C peak reflow) and supports operation from −55 °C to +150 °C junction temperature. Thermal resistance is 100 °C/W (junction-to-ambient) on standard 5.0 mm × 5.0 mm copper pads, limiting steady-state power dissipation to 0.6 W at TA = 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 170 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working range for 12 V/24 V/48 V automotive bus monitoring. |
| VBR @ IT = 1 mA | 189–209 V - Breakdown threshold range; ensures reliable triggering above system overvoltage thresholds while avoiding false trips. |
| VC @ IPPM = 2.2 A | 275 V - Clamped voltage during 600 W transient; determines maximum stress imposed on downstream ICs during surge events. |
| ID @ VWM | <1.0 μA - Reverse leakage at stand-off voltage; minimizes standby power loss and avoids signal integrity degradation in high-impedance sensor lines. |
| PPPM | 600 W - Peak pulse power rating (10/1000 μs waveform); supports IEC 61000-4-5 Level 4 (4 kV) surge immunity when properly mounted. |
| TJ max. | +150 °C - Maximum junction temperature; enables use in under-hood automotive environments without derating below full power. |
| AEC-Q101 | Qualified - Validated for automotive-grade reliability including HTOL, TC, UHAST, and ESD testing per AEC specification. |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, gull-wing lead form with matte tin-plated terminals solderable per J-STD-002 and JESD 22-B102. Polarity indicated by cathode band; anode is unmarked end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Protected line connection | Connected to the circuit node requiring surge protection; clamps positive transients to ground reference. |
| Anode (unmarked end) | Ground reference | Must be tied directly to low-impedance system ground plane to ensure effective clamping and thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 μs) | Enables compliance with IEC 61000-4-5 surge immunity requirements up to 4 kV in automotive power distribution networks. |
| AEC-Q101 qualification | Validates long-term reliability under automotive thermal cycling, humidity, and vibration stress-no additional qualification needed for Tier 1 designs. |
| Low 1.0 μA leakage at 170 V | Preserves accuracy and battery life in always-on vehicle subsystems such as CAN/LIN transceivers and wake-up sensors. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking-reduces manufacturing overhead in high-volume SMT lines. |
| Glass passivated junction | Ensures stable VBR over time and temperature, eliminating parameter drift that could compromise protection margin in safety-critical systems. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 24 V supply rails in engine control units (ECUs) against load dump and inductive switching spikes. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤275 V, preventing damage to upstream PMICs and ensuring uninterrupted microcontroller operation during ISO 16750-2 load dump events. | Use Scenario: Shielding analog output lines of pressure/temperature sensors in factory automation PLC modules. IC Role / Device Role / Timing Role: Point-of-entry TVS on 4–20 mA or 0–10 V signal outputs exposed to field wiring surges. Use Value: Maintains signal fidelity with sub-μA leakage and clamps fast transients (<1 ns response) before they distort measurement accuracy or trigger false alarms. |
| Automotive Body Control Module (BCM) | Telecom Power Supply Input |
Use Scenario: Safeguarding LIN bus transceivers and LED driver ICs in door module assemblies subject to ESD and cable discharge events. IC Role / Device Role / Timing Role: Localized TVS adjacent to connector pins, referenced to chassis ground. Use Value: Provides <100 ps response time and withstands >10,000 ESD strikes (IEC 61000-4-2 ±15 kV contact) without parametric shift or failure. | Use Scenario: Front-end surge suppression on AC/DC adapter inputs in base station power supplies. IC Role / Device Role / Timing Role: Primary-level TVS in parallel with MOVs to handle fast-rising lightning-induced surges (1.2/50 μs). Use Value: Complements slower MOVs by clamping initial voltage overshoot within 275 V, reducing stress on downstream bridge rectifiers and bulk capacitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ170A-E3/52 | Same VWM (170 V), identical SMB (DO-214AA) package but 600 W rating; slightly higher VC (277 V) and lower IPPM (2.18 A). | Compatible in board space-constrained layouts using SMB footprint; not AEC-Q101 qualified. | Select when automotive qualification is not required and existing SMB land pattern is fixed. |
| SMCJ170AHE3/52 | Same VWM and AEC-Q101 qualification, but larger SMC (DO-214AB) package with 1500 W rating and 275 V VC. | Offers higher surge margin for harsher environments (e.g., commercial vehicle alternator load dump); requires PCB layout change. | Select when system-level surge testing exceeds IEC 61000-4-5 Level 4 or extended lifetime under repeated transients is mandated. |
Compared with SMBJ170A-E3/52 and SMCJ170AHE3/52, the SMBG170AHE3/52 uniquely balances AEC-Q101 compliance, SMBG package compactness (30 % smaller than SMC), and precise 275 V clamping-making it optimal for next-generation automotive ECUs where space, qualification, and clamping accuracy are jointly constrained.
Availability
SMBG170AHE3/52 is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor signal conditioning, and telecom power supply front-end protection requiring stable component supply, AEC-Q101 traceability, and RoHS-compliant manufacturing.
Supply support for SMBG170AHE3/52 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, precision, and application-specific optimization.
The TRANSZORB® TVS family-including SMBG170AHE3/52-is engineered for robust transient suppression in automotive, industrial, and communications infrastructure, targeting high-speed clamping, low leakage, and qualification-grade consistency.
FAQ
What is the clamping voltage of SMBG170AHE3/52 under maximum rated surge current?
The SMBG170AHE3/52 has a maximum clamping voltage (VC) of 275 V when subjected to its rated peak pulse current of 2.2 A (10/1000 μs waveform). This value is measured per Fig. 1 in Vishay document 88456 and defines the upper voltage limit imposed on protected circuitry during standardized surge events.
Is SMBG170AHE3/52 suitable for bidirectional transient protection?
No, SMBG170AHE3/52 is a unidirectional TVS diode, as indicated by the "A" suffix and absence of "CA" in its part number. It protects against positive transients only; for bidirectional applications such as AC lines or differential buses, SMBG170CAHE3/52 must be used instead.
Does SMBG170AHE3/52 require derating at elevated ambient temperatures?
Yes, SMBG170AHE3/52 must be derated above TA = 25 °C per Fig. 2 in Vishay document 88456. At 85 °C ambient, its peak pulse power capability drops to approximately 420 W (70 % of 600 W), and at 125 °C, it falls to ~240 W (40 %), due to thermal resistance limitations (RθJA = 100 °C/W).
What does the "HE3/52" suffix indicate in SMBG170AHE3/52?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification; "52" specifies the preferred packaging option: 750-piece 7-inch plastic tape-and-reel format compliant with EIA-481 standards, optimized for high-speed pick-and-place assembly.
How does SMBG170AHE3/52 compare to standard Zener diodes in surge protection roles?
Unlike general-purpose Zener diodes, SMBG170AHE3/52 is specifically designed for transient suppression: it features lower dynamic impedance, faster response (<1 ns), higher surge current capability (2.2 A vs. typical Zener surge limits <0.5 A), and guaranteed clamping performance per IEC 61000-4-5-making it unsuitable for voltage regulation but optimal for surge protection.
SMBG170AHE3/52 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG170AHE3/52 FAQ
1.How can I place an order for SMBG170AHE3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG170AHE3/52 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 SMBG170AHE3/52 reliable?
The price and inventory of SMBG170AHE3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG170AHE3/52 is usually 5 days.
3.What payment methods are accepted for SMBG170AHE3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG170AHE3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG170AHE3/52?
SMBG170AHE3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG170AHE3/52 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 SMBG170AHE3/52?
For technical support, including SMBG170AHE3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG170AHE3/52 requirements.
6.How does Aetrix verify that SMBG170AHE3/52 is sourced from the original manufacturer or authorized distributors?
All SMBG170AHE3/52 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 SMBG170AHE3/52 meets industry standards.
7.What is the process for return or replacement of SMBG170AHE3/52?
All SMBG170AHE3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBG170AHE3/52, 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 SMBG170AHE3/52 part is unused and in its original packaging.
Return procedure for SMBG170AHE3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG170AHE3/52 Tags
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