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Vishay General Semiconductor - Diodes Division SMBG17AHE3/5B
- Part No.:
- SMBG17AHE3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-215AA, SMB Gull Wing
- Datasheet:
-
SMBG17AHE3/5B.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO215AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,927
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Product details
Overview
SMBG17AHE3/5B from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the SMBG (DO-215AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 17 V stand-off voltage (VWM), 18.9–20.9 V breakdown voltage (VBR) at 1 mA, 600 W peak pulse power (10/1000 μs), clamping voltage of 27.6 V at 21.7 A, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SMBG17AHE3/5B datasheet, SMBG17AHE3/5B pinout, SMBG17AHE3/5B application, or SMBG17AHE3/5B equivalent, key selection criteria include its unidirectional polarity, low clamping ratio (VC/VBR ≈ 1.37), 1.0 μA max reverse leakage at VWM, 150 °C max junction temperature, and compatibility with automated SMT placement on standard PCB pads.
Technical Context
This TVS diode operates as a shunt-clamping device that remains high-impedance below VWM (17 V) and rapidly transitions to low-impedance conduction above VBR (min 18.9 V) to divert surge current away from protected circuitry. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive transients.
The SMBG17AHE3/5B is rated for 600 W peak pulse power per 10/1000 μs waveform at 0.01% duty cycle, supports 100 A non-repetitive forward surge current (8.3 ms half-sine), and exhibits typical thermal resistance of 100 °C/W (junction-to-ambient) when mounted on 5.0 mm × 5.0 mm copper pads - enabling effective thermal management in compact layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 18.9 V / 20.9 V at 1 mA - precise breakdown threshold ensuring predictable turn-on behavior |
| VC @ IPPM | 27.6 V at 21.7 A - clamping voltage limits downstream voltage stress during surge events |
| PPPM | 600 W - peak pulse power handling capability with 10/1000 μs waveform |
| IFSM | 100 A - surge current rating for 8.3 ms half-sine wave, critical for inductive load switching |
| TJ max | +150 °C - extended junction temperature range supports under-hood automotive use |
| Leakage @ VWM | ≤1.0 μA - minimal standby power loss and signal integrity impact in high-impedance circuits |
Pinout & Package
Package: SMBG (DO-215AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; polarity indicated by cathode band on unidirectional devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to ground or lower-potential node in unidirectional protection configuration |
| Cathode | Current exit point during forward conduction; marked with band | Connected to protected line (e.g., power rail or signal trace) to clamp positive transients |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control units and ADAS sensors requiring high-reliability surge suppression |
| 600 W peak pulse power | Robust protection against ISO 7637-2 Pulse 1, 2a, 3a/b, and IEC 61000-4-5 Level 4 surges without degradation |
| Low clamping voltage (27.6 V) | Minimizes voltage overshoot on 12 V automotive systems, preserving IC-level safety margins |
| MSL Level 1 (260 °C peak) | Compatible with standard lead-free reflow profiles without moisture sensitivity concerns |
| Glass passivated junction | Ensures stable VBR tolerance and long-term parameter stability across temperature and life cycles |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients. IC Role / Device Role / Timing Role: Shunt-clamping TVS placed between power rail and ground to absorb energy from >100 V spikes. Use Value: Clamps to 27.6 V within nanoseconds, preventing damage to microcontrollers and CAN transceivers downstream. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in factory automation equipment. IC Role / Device Role / Timing Role: Unidirectional TVS on signal lines to suppress ESD and inductive coupling from nearby solenoids or motors. Use Value: 1.0 μA leakage preserves signal accuracy; 21.7 A surge capacity handles repeated industrial noise events. |
| Telecom Line Interface Protection | Consumer Power Adapter Input Protection |
Use Scenario: Front-end surge protection for PoE-powered Ethernet switches and base stations. IC Role / Device Role / Timing Role: Primary TVS on DC input rails to meet IEC 61000-4-5 Level 4 (4 kV/2 Ω) requirements. Use Value: 600 W rating enables single-device compliance without cascaded protection stages. | Use Scenario: Input-stage overvoltage protection in AC/DC adapters for smart home devices. IC Role / Device Role / Timing Role: Unidirectional clamping device on secondary-side 12 V output to guard against regulator failure or feedback loop faults. Use Value: AEC-Q101 qualification ensures longevity in thermally stressed environments; DO-215AA footprint fits space-constrained designs. |
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 lower PPPM = 600 W (same rating), slightly higher VC = 28.8 V at 20.9 A; SMBJ package (DO-214AA) has larger footprint and higher RθJA | Less suitable for ultra-dense automotive modules due to larger package size and reduced thermal efficiency | Select SMBG17AHE3/5B when board space and thermal performance are constrained; choose SMBJ17A-E3/5B only if legacy layout reuse is required. |
| 1.5SMC17A | Same VWM/VBR specs, but SMC (DO-214AB) package; 600 W rating, VC = 27.6 V at 21.7 A; not AEC-Q101 qualified | Lacks automotive qualification; intended for industrial/commercial use only | Use 1.5SMC17A where AEC-Q101 is not mandated and cost is prioritized; SMBG17AHE3/5B remains preferred for automotive OEM programs. |
Compared with SMBJ17A-E3/5B and 1.5SMC17A, the SMBG17AHE3/5B delivers identical electrical protection performance in a smaller DO-215AA package with superior thermal resistance (100 °C/W vs. ~120–140 °C/W) and certified AEC-Q101 reliability - making it optimal for next-generation automotive and space-constrained industrial designs.
Availability
SMBG17AHE3/5B is available at Aetrix Electronics and suitable for automotive power rail protection, industrial sensor interface protection, and telecom line interface protection requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMBG17AHE3/5B 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, precision, and automotive-grade qualification.
The SMBG series was developed specifically for high-reliability transient suppression in automotive and industrial environments, combining AEC-Q101 qualification, low-profile packaging, and consistent clamping performance across temperature and life cycles.
FAQ
What is the breakdown voltage range for SMBG17AHE3/5B?
The SMBG17AHE3/5B has a guaranteed breakdown voltage (VBR) range of 18.9 V to 20.9 V at a test current of 1 mA, measured per ANSI/IEEE C62.35 standards. This tight tolerance ensures predictable clamping onset and compatibility with 12 V system architectures where overvoltage margin must be strictly controlled.
Is SMBG17AHE3/5B suitable for automotive applications?
Yes, SMBG17AHE3/5B is AEC-Q101 qualified and explicitly rated for automotive use, including engine control units, body electronics, and ADAS sensor interfaces. Its 150 °C maximum junction temperature, MSL Level 1 reflow compatibility, and glass-passivated junction support harsh under-hood environments and long-term field reliability.
What does the "HE3" suffix indicate in SMBG17AHE3/5B?
The "HE3" suffix denotes RoHS-compliant construction with AEC-Q101 qualification and matte tin-plated leads meeting J-STD-002 solderability requirements. It distinguishes this variant from industrial-grade "E3" parts and halogen-free "HM3" versions, confirming automotive suitability and process compatibility.
How does SMBG17AHE3/5B compare to bidirectional TVS diodes like SMBG17CA?
SMBG17AHE3/5B is unidirectional and optimized for DC rail protection where polarity is fixed; SMBG17CA is bidirectional and used for AC or differential signal lines. The SMBG17AHE3/5B offers lower leakage (<1.0 μA) and tighter VBR tolerance than SMBG17CA, making it preferable for 12 V power domains requiring minimal standby current.
What is the recommended PCB pad layout for SMBG17AHE3/5B?
Vishay specifies a minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad area per terminal for SMBG17AHE3/5B to achieve rated 600 W pulse power and thermal resistance of 100 °C/W. Use thermal reliefs or solid copper connections depending on assembly process, and ensure solder mask clearance matches the DO-215AA outline dimensions.
SMBG17AHE3/5B 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):
- 17V
- Voltage - Breakdown (Min):
- 18.9V
- Voltage - Clamping (Max) @ Ipp:
- 27.6V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- 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)
SMBG17AHE3/5B FAQ
1.How can I place an order for SMBG17AHE3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBG17AHE3/5B 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 SMBG17AHE3/5B reliable?
The price and inventory of SMBG17AHE3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBG17AHE3/5B is usually 5 days.
3.What payment methods are accepted for SMBG17AHE3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBG17AHE3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBG17AHE3/5B?
SMBG17AHE3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBG17AHE3/5B 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 SMBG17AHE3/5B?
For technical support, including SMBG17AHE3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBG17AHE3/5B requirements.
6.How does Aetrix verify that SMBG17AHE3/5B is sourced from the original manufacturer or authorized distributors?
All SMBG17AHE3/5B 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 SMBG17AHE3/5B meets industry standards.
7.What is the process for return or replacement of SMBG17AHE3/5B?
All SMBG17AHE3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBG17AHE3/5B, 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 SMBG17AHE3/5B part is unused and in its original packaging.
Return procedure for SMBG17AHE3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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