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Vishay General Semiconductor - Diodes Division SMBJ17AHE3_A/I
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- Part No.:
- SMBJ17AHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17AHE3_A/I.pdf
- Description:
- TVS DIODE 17VWM 27.6VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:8,665
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Product details
Overview
SMBJ17AHE3_A/I from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of sensitive electronics. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown range (VBR at 1 mA), 27.6 V clamping voltage (VC) at 21.7 A peak pulse current, and 600 W peak pulse power (10/1000 µs waveform), commonly deployed on DC power rails and I/O lines in industrial sensor interfaces.
For engineers reviewing the SMBJ17AHE3_A/I datasheet, SMBJ17AHE3_A/I pinout, SMBJ17AHE3_A/I application, or SMBJ17AHE3_A/I equivalent, this page delivers verified electrical parameters, AEC-Q101 qualification status, thermal resistance (RθJA = 100 °C/W), polarity marking convention, and real-world use context for automotive-grade surge protection design.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity identification, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its 100 A IFSM rating supports high-energy transients from inductive switching, while the 150 °C maximum junction temperature enables operation in under-hood automotive environments.
The SMBJ17AHE3_A/I is AEC-Q101 qualified (automotive grade), RoHS-compliant, and rated for MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its 1.0 µA max reverse leakage at 17 V standoff ensures minimal standby power loss in battery-powered systems, and its DO-214AA footprint allows automated placement on dense PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 17 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 12 V nominal systems. |
| VBR (Breakdown Voltage) | 18.9–20.9 V at 1 mA - Confirmed breakdown threshold range; ensures reliable triggering above normal operating voltage. |
| VC (Clamping Voltage) | 27.6 V at 21.7 A (10/1000 µs) - Peak voltage seen by protected circuit during surge; limits stress on downstream ICs like microcontrollers or CAN transceivers. |
| PPPM (Peak Pulse Power) | 600 W - Sustains standardized lightning/surge energy (IEC 61000-4-5); validates suitability for industrial and automotive transient immunity. |
| IPPM (Peak Pulse Current) | 21.7 A - Maximum non-repetitive surge current it can divert without failure; correlates directly with system-level surge test compliance. |
| TJmax | 150 °C - Enables deployment in high-temperature locations such as engine control units or power converters. |
| RθJA | 100 °C/W - Thermal resistance from junction to ambient on standard 0.2" × 0.2" copper pads; informs heatsinking requirements for repetitive surge duty. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity marked by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes clamping loop when transient exceeds VWM. |
| Cathode | High-side connection point | Connected to protected line (e.g., 12 V rail or signal trace); band-marked end identifies this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, body electronics, and ADAS sensors requiring long-term reliability under thermal cycling and vibration. |
| 600 W peak pulse power (10/1000 µs) | Meets IEC 61000-4-5 Level 3/4 surge immunity requirements for industrial and automotive equipment without external derating. |
| Glass passivated junction | Ensures stable VBR and low leakage over lifetime; eliminates risk of moisture-induced parameter drift in humid environments. |
| MSL Level 1, 260 °C peak reflow | Compatible with standard lead-free SMT assembly processes without preconditioning or special handling. |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (<1 ns), improving protection margin for CMOS logic and analog front-ends. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply inputs of engine control modules (ECMs) against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between battery rail and input filter capacitor. Use Value: Clamps transients up to 27.6 V at 21.7 A, preventing damage to 3.3 V/5 V regulators and microcontrollers downstream. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA or 0–10 V) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Standoff-connected TVS on signal line, referenced to local ground plane. Use Value: Limits induced surges from nearby motor drives to <27.6 V, preserving ADC accuracy and avoiding latch-up in signal conditioning ICs. |
| Telecom DC Power Input Protection | Consumer Device USB Port ESD/Surge Guard |
|
Use Scenario: Shielding 48 V PoE-powered network switches from lightning-induced surges on upstream DC input. IC Role / Device Role / Timing Role: Primary TVS on main DC bus, coordinated with secondary MOV or GDT stages. Use Value: Absorbs 600 W pulses without degradation, maintaining system uptime during outdoor installation surges. |
Use Scenario: Adding secondary surge protection on VBUS line of USB-C ports in smart home hubs. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed after primary ESD array, before USB controller. Use Value: Provides 27.6 V clamping at 21.7 A while adding <0.5 pF parasitic capacitance-no signal integrity impact on USB 2.0 data lines. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17AHM3_A/I | Halogen-free variant with identical electrical specs and AEC-Q101 qualification; same SMB package and pinout. | Required where halogen-free compliance (e.g., IEC 61249-2-21) is mandated for final product certification. | Select SMBJ17AHM3_A/I if RoHS + halogen-free material declaration is contractually required. |
| SMBJ17A-E3/5B | Commercial-grade (non-AEC-Q101), same VWM/VC/PPPM, but rated only for industrial temp range (−55 °C to +150 °C) without automotive qualification testing. | Suitable for cost-sensitive industrial controls or consumer electronics where AEC-Q101 is not required. | Choose SMBJ17A-E3/5B for non-automotive designs needing lower unit cost and standard RoHS compliance. |
Compared with SMBJ17AHE3_A/I, the HM3 variant adds halogen-free compliance without performance trade-offs, while the E3/5B version removes AEC-Q101 validation-making it viable for commercial applications where automotive reliability testing is unnecessary.
Availability
SMBJ17AHE3_A/I is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer USB-C power delivery systems requiring stable component supply across multi-year production cycles.
Supply support for SMBJ17AHE3_A/I 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 SMBJ series is engineered for high-energy transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where consistent clamping performance and long-term stability are critical.
FAQ
What is the clamping voltage of SMBJ17AHE3_A/I at its rated peak pulse current?
The SMBJ17AHE3_A/I has a maximum clamping voltage (VC) of 27.6 V when subjected to its rated peak pulse current of 21.7 A using the standard 10/1000 µs waveform. This value is measured per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ17AHE3_A/I maintains this clamping performance across its full operating temperature range (−55 °C to +150 °C).
Is SMBJ17AHE3_A/I suitable for automotive applications?
Yes, SMBJ17AHE3_A/I is AEC-Q101 qualified and explicitly designated for automotive use, as confirmed by Vishay's ordering code suffix "HE3" and documentation revision notes. It meets stringent requirements for thermal cycling, mechanical shock, and long-term reliability in engine compartments and chassis-mounted electronics. The SMBJ17AHE3_A/I is routinely deployed in powertrain, body control, and ADAS subsystems.
What does the "A/I" suffix mean in SMBJ17AHE3_A/I?
The "A/I" suffix in SMBJ17AHE3_A/I indicates packaging configuration: "A" denotes the base part revision level, and "I" specifies 13-inch diameter plastic tape-and-reel delivery containing 3200 units per reel. This format supports high-volume automated SMT placement. The SMBJ17AHE3_A/I is supplied on standard EIA-481-compliant carrier tape with proper orientation and cover tape sealing.
How does SMBJ17AHE3_A/I differ from bidirectional variants like SMBJ17CA?
The SMBJ17AHE3_A/I is unidirectional, meaning it conducts only in reverse bias above VBR and blocks forward current beyond ~3.5 V, whereas SMBJ17CA is bidirectional and symmetrical-clamping in both polarities. This makes SMBJ17AHE3_A/I ideal for DC power line protection with defined polarity, while SMBJ17CA suits AC-coupled or floating signal lines. Their VWM and VC values differ accordingly.
What is the thermal resistance junction-to-ambient for SMBJ17AHE3_A/I?
The SMBJ17AHE3_A/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pad per terminal. This value assumes still air convection and no additional heatsinking. For higher surge repetition rates, board layout must ensure adequate copper area to maintain TJ ≤ 150 °C. The SMBJ17AHE3_A/I's RθJA is validated per JEDEC JESD51-2 standards.
SMBJ17AHE3_A/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- 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:
- 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 (SMBJ)
SMBJ17AHE3_A/I FAQ
1.How can I place an order for SMBJ17AHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17AHE3_A/I 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 SMBJ17AHE3_A/I reliable?
The price and inventory of SMBJ17AHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ17AHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ17AHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17AHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17AHE3_A/I?
SMBJ17AHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17AHE3_A/I 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 SMBJ17AHE3_A/I?
For technical support, including SMBJ17AHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17AHE3_A/I requirements.
6.How does Aetrix verify that SMBJ17AHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ17AHE3_A/I 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 SMBJ17AHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ17AHE3_A/I?
All SMBJ17AHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17AHE3_A/I, 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 SMBJ17AHE3_A/I part is unused and in its original packaging.
Return procedure for SMBJ17AHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17AHE3_A/I Tags
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