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Vishay General Semiconductor - Diodes Division SMBG17-E3/5B
- Part No.:
- SMBG17-E3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG17-E3/5B.pdf
- Description:
- TVS DIODE 17VWM 30.5VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:6,560
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Product details
Overview
SMBG17-E3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-215AA (SMBG) package, designed for clamping inductive switching transients and ESD events on power and signal lines. It features 17 V standoff voltage (VWM), 18.9–20.9 V breakdown range (VBR at 1 mA), 27.6 V maximum clamping voltage (VC) at 21.7 A peak pulse current, and 600 W peak pulse power rating with 10/1000 µs waveform - used in automotive sensor protection and industrial I/O interface circuits.
For engineers reviewing the SMBG17-E3/5B datasheet, SMBG17-E3/5B pinout, SMBG17-E3/5B application, or SMBG17-E3/5B equivalent, this page delivers verified electrical parameters, JEDEC-compliant thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, RoHS-compliant matte tin plating, and MSL Level 1 reflow compatibility - all critical for automotive-grade board-level surge protection design.
Technical Context
The SMBG17-E3/5B operates as a unidirectional avalanche diode, conducting only when reverse voltage exceeds its VBR threshold (18.9–20.9 V), with fast response time (<1 ps) and low dynamic impedance enabling effective suppression of sub-microsecond transients. Its glass-passivated junction ensures stable leakage performance and long-term reliability under repetitive surge stress.
Thermally, it uses a DO-215AA package with RθJL = 20 °C/W to lead and RθJA = 100 °C/W to ambient (on 5.0 mm × 5.0 mm copper pads), supporting continuous operation up to TJ = 150 °C. The device is rated for 100 A non-repetitive forward surge (8.3 ms half-sine) and meets UL 497B recognition for protector classification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin for 12 V automotive systems. |
| VBR (min/max) | 18.9 V / 20.9 V at 1 mA - Confirmed breakdown range ensures predictable turn-on across temperature and production lot. |
| VC @ IPPM | 27.6 V at 21.7 A - Clamping voltage limits downstream IC stress during 600 W transient events (10/1000 µs). |
| PPPM | 600 W - Peak pulse power handling capability validated per ANSI/IEEE C62.35, suitable for ISO 7637-2 Pulse 1/2a/3a compliance. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms) supports robust protection against load dump in vehicle power networks. |
| TJ max | +150 °C - Junction temperature limit enables use in under-hood automotive environments without derating. |
| MSL Level | Level 1 (J-STD-020) - No floor life limitation; compatible with standard 260 °C peak reflow profile. |
Pinout & Package
Package: DO-215AA (SMBG), surface-mount gull-wing configuration with cathode band marking on one end. Matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability requirements; E3 suffix indicates JESD 201 Class 1A whisker resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (low-side connection) | Connected to ground or lower-potential rail; conducts during forward surge or clamp recovery. |
| Cathode | Reverse-biased clamping terminal (high-side connection) | Connected to protected line; avalanche breakdown initiates here when VWM is exceeded. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensor interfaces. |
| Glass passivated junction | Ensures stable leakage current (<1.0 µA at VWM) and immunity to humidity-induced parameter drift. |
| 600 W peak pulse power (10/1000 µs) | Provides margin for ISO 16750-2 and ISO 7637-2 transient immunity testing without degradation. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients, improving protection effectiveness for sensitive MOSFETs and microcontrollers. |
| UL 497B recognized (QVGQ2) | Meets safety standards for telecom and industrial signal-line protectors; file E136766 covers both uni- and bi-directional variants. |
Applications
| Automotive Sensor Protection | Industrial I/O Interface |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients before they reach the IC input stage. Use Value: Limits induced voltage to ≤27.6 V during 600 W surges, preventing latch-up or gate oxide damage in 3.3 V/5 V interface ICs. |
Use Scenario: Safeguarding PLC digital input modules from field-wiring induced surges caused by relay coil switching or lightning coupling. IC Role / Device Role / Timing Role: Standoff-clamp device on 24 V DC input lines, absorbing energy before it reaches optocoupler or MCU GPIO protection network. Use Value: Withstands 100 A single-surge events and maintains <1 µA leakage at 17 V, ensuring no false triggering during normal operation. |
| Power Supply Rail Protection | Consumer Device USB Port |
Use Scenario: Secondary overvoltage protection on 12 V/24 V DC-DC converter outputs in industrial power supplies. IC Role / Device Role / Timing Role: Fast-acting shunt element parallel to output capacitor, triggered only during fault conditions exceeding VWM. Use Value: Clamps within nanoseconds to hold rail voltage below 28 V, preserving downstream regulators and PMICs during transient overload. |
Use Scenario: ESD and surge protection on VBUS and D+/D− lines of USB 2.0 ports in set-top boxes and smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance unidirectional suppressor placed upstream of USB controller, grounded at system GND. Use Value: Delivers <1 pF junction capacitance (per Fig. 4) and 27.6 V clamping to prevent data corruption while meeting IEC 61000-4-2 Level 4. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17A-E3/5B | Same VWM (17 V), but higher VC = 29.2 V at 20.5 A; 600 W rating retained; SMBJ package has slightly larger footprint (DO-214AA vs. DO-215AA). | Less stringent clamping requirement; acceptable where 29.2 V rail tolerance exists (e.g., 24 V systems with wide-margin ICs). | Select SMBJ17A-E3/5B if board layout allows DO-214AA footprint and higher clamping voltage is acceptable. |
| SMBG17HE3/5B | Identical electrical specs and package, but HE3 suffix denotes AEC-Q101 qualification (vs. E3's commercial grade); same RoHS and MSL Level 1 compliance. | Required for automotive OEM designs requiring full AEC-Q101 documentation and traceability; not needed for industrial or consumer use. | Choose SMBG17HE3/5B when automotive qualification evidence (test reports, PPAP) is mandatory for your program. |
Compared with SMBJ17A-E3/5B, the SMBG17-E3/5B offers tighter clamping (27.6 V vs. 29.2 V) in a smaller DO-215AA footprint; versus SMBG17HE3/5B, it provides identical performance at commercial-grade cost and documentation - ideal for non-automotive applications needing high-reliability surge suppression.
Availability
SMBG17-E3/5B is available at Aetrix Electronics and suitable for automotive sensor protection, industrial I/O interface, and power supply rail protection requiring stable component supply and consistent surge performance across production batches.
Supply support for SMBG17-E3/5B 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, TVS devices, and power MOSFETs with emphasis on reliability, automotive qualification, and high-volume manufacturability.
The SMBG series was developed specifically for surface-mount transient suppression in space-constrained, high-reliability applications - combining AEC-Q101 validation, UL recognition, and industry-standard DO-215AA packaging for automotive and industrial markets.
FAQ
What is the maximum clamping voltage of the SMBG17-E3/5B under specified test conditions?
The SMBG17-E3/5B has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current (IPPM) of 21.7 A using a 10/1000 µs waveform. This value is measured at TA = 25 °C with devices mounted on 5.0 mm × 5.0 mm copper pads per terminal, and represents the upper bound of voltage seen by protected circuitry during surge events.
Is the SMBG17-E3/5B qualified for automotive applications?
No - the SMBG17-E3/5B carries the E3 suffix, indicating RoHS-compliant commercial-grade qualification. For automotive use, the SMBG17HE3/5B variant must be selected, as it bears the HE3 suffix confirming full AEC-Q101 qualification per the Vishay datasheet revision 12-Nov-12, Document Number 88456.
What does the "5B" in SMBG17-E3/5B indicate?
The "5B" denotes the preferred package code specifying 13-inch diameter plastic tape and reel packaging with a base quantity of 3200 units per reel. This differs from "52", which indicates 7-inch reels with 750 units - both share identical electrical and mechanical specifications for the SMBG17-E3/5B device.
How does the SMBG17-E3/5B compare to bi-directional TVS diodes like SMBG17CA?
The SMBG17-E3/5B is unidirectional and conducts only in reverse bias above VBR, making it suitable for DC power rails and single-polarity signal lines. In contrast, SMBG17CA is bi-directional with symmetrical clamping in both directions - used for AC-coupled or differential signals. Their VWM, VBR, and VC values differ accordingly; SMBG17-E3/5B cannot substitute for SMBG17CA without circuit redesign.
What is the thermal resistance from junction to ambient for SMBG17-E3/5B?
The SMBG17-E3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended pad layout: 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still air conditions and is critical for calculating maximum power dissipation at elevated ambient temperatures.
SMBG17-E3/5B 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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.5V
- Current - Peak Pulse (10/1000µs):
- 19.7A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBG)
SMBG17-E3/5B FAQ
1.How can I place an order for SMBG17-E3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG17-E3/5B 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 SMBG17-E3/5B reliable?
The price and inventory of SMBG17-E3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG17-E3/5B is usually 5 days.
3.What payment methods are accepted for SMBG17-E3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG17-E3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG17-E3/5B?
SMBG17-E3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG17-E3/5B 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 SMBG17-E3/5B?
For technical support, including SMBG17-E3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG17-E3/5B requirements.
6.How does Aetrix verify that SMBG17-E3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG17-E3/5B 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 SMBG17-E3/5B meets industry standards.
7.What is the process for return or replacement of SMBG17-E3/5B?
All SMBG17-E3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG17-E3/5B, 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 SMBG17-E3/5B part is unused and in its original packaging.
Return procedure for SMBG17-E3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBG17-E3/5B Tags
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