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Vishay General Semiconductor - Diodes Division SMBJ17AHM3_B/I
- Part No.:
- SMBJ17AHM3_B/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ17AHM3_B/I.pdf
- Description:
- 600W,17V 5%,UNIDIR,SMB TVS
- Quantity:
- Payment:
- Shipping:
Inventory:9,165
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Product details
Overview
SMBJ17AHM3_B/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 voltage (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 - deployed on power rails and signal lines in industrial motor drives.
For engineers reviewing the SMBJ17AHM3_B/I datasheet, SMBJ17AHM3_B/I pinout, SMBJ17AHM3_B/I application, or SMBJ17AHM3_B/I equivalent, this page delivers verified electrical parameters, thermal behavior under surge conditions, AEC-Q101 qualification status, halogen-free RoHS compliance, and real-world clamping performance data essential for ESD and lightning-induced transient design validation.
Technical Context
This TVS diode operates as a unidirectional clamping device with cathode-band polarity marking, leveraging a glass-passivated silicon junction to achieve sub-nanosecond response time and low incremental surge resistance. Its 100 °C/W junction-to-ambient thermal resistance (RθJA) and 20 °C/W junction-to-lead (RθJL) support reliable operation up to 150 °C junction temperature under repetitive transients.
The SMBJ17AHM3_B/I is rated for 100 A non-repetitive forward surge current (IFSM, 8.3 ms half-sine) and exhibits 1.0 µA max reverse leakage at VWM, enabling low-power standby integrity in battery-backed systems. Its MSL Level 1 moisture sensitivity and 260 °C lead-free reflow compatibility ensure compatibility with automated SMT assembly processes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 17 V - Maximum continuous reverse operating voltage before conduction begins; defines safe operating margin for 15 V nominal supply rails. |
| VBR (min/max) | 18.9 V / 20.9 V at IT = 1 mA - Confirmed breakdown threshold range ensures predictable turn-on during fast transients. |
| VC @ IPPM | 27.6 V at 21.7 A - Clamped voltage during 600 W 10/1000 µs surge; limits downstream IC stress to safe levels. |
| PPPM | 600 W - Peak pulse power handling capability per standard 10/1000 µs waveform; supports IEC 61000-4-5 Level 4 immunity. |
| IFSM | 100 A - Single half-sine surge rating (8.3 ms); enables protection against inductive kickback in relay or solenoid circuits. |
| TJ max | +150 °C - Maximum junction temperature; allows deployment in under-hood automotive or high-ambient industrial environments. |
| Package | SMB (DO-214AA) - Standardized 2-pin surface-mount outline with 5.21 mm × 4.06 mm footprint and 2.20 mm height; compatible with JEDEC MS-012. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration with cathode band marking on one end. Matte tin-plated leads meet J-STD-002 solderability and JESD22-B102 whisker resistance Class 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path); conducts during positive transients when cathode is at higher potential. |
| Cathode | Reverse-biased terminal | Marked with band; connected to protected line (e.g., 12 V rail); initiates clamping when voltage exceeds VBR. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables compliance with IEC 61000-4-5 surge immunity requirements for industrial and telecom equipment. |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Halogen-free & RoHS-compliant | Meets environmental compliance mandates for EU, China RoHS, and JEITA EG02, supporting green manufacturing programs. |
| MSL Level 1, 260 °C peak reflow | Eliminates pre-baking requirement and supports standard lead-free SMT assembly without moisture-related popcorning risk. |
| Low clamping ratio (VC/VBR ≈ 1.38) | Minimizes let-through voltage during clamping, reducing stress on downstream MOSFETs, microcontrollers, and interface ICs. |
Applications
| Industrial Motor Drives | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Protection of gate drivers and MCU I/O against inductive switching spikes from brushed DC motors and solenoids. IC Role / Device Role / Timing Role: Unidirectional TVS placed between gate driver output and ground, clamping negative flyback voltage to <28 V. Use Value: Prevents gate oxide damage in 30 V-rated MOSFETs by limiting transient excursions below absolute maximum ratings. |
Use Scenario: Input line protection for LIN bus transceivers and sensor interfaces exposed to load dump and jump-start events. IC Role / Device Role / Timing Role: Standoff-connected TVS on 12 V supply rail upstream of LDO regulators and CAN/LIN PHYs. Use Value: Maintains system uptime during 12 V rail surges up to 27.6 V, avoiding brownout resets and latch-up in safety-critical modules. |
| Telecom Power Supplies | Consumer Appliance Control Boards |
|
Use Scenario: Secondary-side DC-DC converter input protection in PoE-powered switches and base stations. IC Role / Device Role / Timing Role: Parallel-connected TVS across +48 V output of isolated DC-DC stage, absorbing induced lightning surges. Use Value: Limits let-through energy to <10 mJ per event, preserving isolation barrier integrity and preventing secondary-side controller failure. |
Use Scenario: Surge suppression on AC mains-derived 5 V/3.3 V logic rails in washing machines and HVAC controllers. IC Role / Device Role / Timing Role: Low-leakage (1.0 µA) TVS placed after bridge rectifier and bulk capacitor, guarding microcontroller reset and UART lines. Use Value: Ensures zero false resets during EFT bursts (IEC 61000-4-4) while maintaining <100 nA standby current draw. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ17AHE3_B/I | Same electrical specs but RoHS-compliant (non-halogen-free) commercial grade; lacks AEC-Q101 qualification. | Approved for industrial/commercial use only; not suitable for automotive under-hood or chassis locations. | Select when AEC-Q101 is not required and cost optimization is prioritized over halogen-free compliance. |
| SMAJ17A-M3/A | Lower 400 W PPPM, SMA package (smaller footprint), 30.5 V VC at 14.3 A - less effective clamping. | Limited to lower-energy transients; unsuitable for IEC 61000-4-5 Level 4 or automotive load dump. | Choose only for space-constrained consumer designs where 600 W surge immunity is not mandated. |
Compared with SMBJ17AHM3_B/I, the HE3 variant trades halogen-free construction and automotive qualification for lower cost, while the SMAJ17A-M3/A sacrifices 33 % peak power handling and clamping performance to reduce board area - making SMBJ17AHM3_B/I the optimal choice for high-reliability, high-surge industrial and automotive applications.
Availability
SMBJ17AHM3_B/I is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, telecom power supplies, and consumer appliance control boards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ17AHM3_B/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability, efficiency, and application-specific performance.
The SMBJ series is engineered for high-energy transient suppression in harsh environments, targeting automotive, industrial, and telecom applications where robustness, AEC-Q101 compliance, and precise clamping are critical design requirements.
FAQ
What is the clamping voltage of SMBJ17AHM3_B/I at its rated peak pulse current?
The SMBJ17AHM3_B/I has a maximum clamping voltage (VC) of 27.6 V at 21.7 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and confirmed in Vishay's datasheet revision 09-Jan-2024, Document Number 88392. The clamping performance ensures downstream components remain within safe operating limits during surge events.
Is SMBJ17AHM3_B/I qualified for automotive applications?
Yes, SMBJ17AHM3_B/I is AEC-Q101 qualified, as indicated by the "HM3" suffix - denoting halogen-free, RoHS-compliant, and automotive-grade reliability. It undergoes stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per the AEC-Q101 standard, making it suitable for under-hood and chassis-mounted automotive electronics.
What does the "_B/I" suffix mean in SMBJ17AHM3_B/I?
The "_B/I" suffix in SMBJ17AHM3_B/I specifies packaging and reel configuration: "B" denotes the internal revision code (e.g., revision B of the HM3 base part), and "I" indicates 13-inch diameter plastic tape-and-reel packaging with a base quantity of 3200 units. This matches Vishay's ordering convention documented in the "Ordering Information" section of datasheet 88392.
How does SMBJ17AHM3_B/I differ from SMBJ17A-E3/52?
SMBJ17AHM3_B/I is halogen-free and AEC-Q101 qualified, whereas SMBJ17A-E3/52 is RoHS-compliant but commercial-grade (no automotive qualification) and contains halogens. Both share identical electrical specs and SMB package, but the HM3 variant meets stricter environmental and reliability standards required for automotive and high-reliability industrial deployments.
What is the thermal resistance of SMBJ17AHM3_B/I, and how does it affect PCB layout?
SMBJ17AHM3_B/I has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W and junction-to-lead (RθJL) of 20 °C/W, measured on 0.2" × 0.2" copper pads per terminal. To maintain TJ ≤ 150 °C during repetitive surges, PCB layout must provide adequate copper area and minimize trace length - especially for the cathode connection carrying peak clamp current.
SMBJ17AHM3_B/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:
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
SMBJ17AHM3_B/I FAQ
1.How can I place an order for SMBJ17AHM3_B/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ17AHM3_B/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 SMBJ17AHM3_B/I reliable?
The price and inventory of SMBJ17AHM3_B/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ17AHM3_B/I is usually 5 days.
3.What payment methods are accepted for SMBJ17AHM3_B/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ17AHM3_B/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ17AHM3_B/I?
SMBJ17AHM3_B/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ17AHM3_B/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 SMBJ17AHM3_B/I?
For technical support, including SMBJ17AHM3_B/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ17AHM3_B/I requirements.
6.How does Aetrix verify that SMBJ17AHM3_B/I is sourced from the original manufacturer or authorized distributors?
All SMBJ17AHM3_B/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 SMBJ17AHM3_B/I meets industry standards.
7.What is the process for return or replacement of SMBJ17AHM3_B/I?
All SMBJ17AHM3_B/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ17AHM3_B/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 SMBJ17AHM3_B/I part is unused and in its original packaging.
Return procedure for SMBJ17AHM3_B/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ17AHM3_B/I Tags
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