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Vishay General Semiconductor - Diodes Division SMBJ100AHM3_A/I
- Part No.:
- SMBJ100AHM3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100AHM3_A/I.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,592
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Product details
Overview
SMBJ100AHM3_A/I from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 100 V stand-off voltage (VWM), 111–123 V breakdown voltage (VBR) at 1 mA, 162 V maximum clamping voltage (VC) at 3.7 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial motor drives and automotive body control modules.
For engineers reviewing the SMBJ100AHM3_A/I datasheet, SMBJ100AHM3_A/I pinout, SMBJ100AHM3_A/I application, or SMBJ100AHM3_A/I equivalent, key selection criteria include clamping performance under 3.7 A surge, thermal resistance (RθJA = 100 °C/W), AEC-Q101 qualification status, and halogen-free RoHS compliance per Vishay HM3 suffix.
Technical Context
This TVS diode operates as a unidirectional clamping device, leveraging an avalanche breakdown mechanism to limit transient voltages above its VBR threshold while maintaining low leakage (<1.0 µA at VWM). Its junction-to-lead thermal resistance (RθJL = 20 °C/W) enables effective heat dissipation during repetitive surges when mounted on recommended 5.0 mm × 5.0 mm copper pads.
The SMBJ100AHM3_A/I exhibits a temperature coefficient of VBR of +0.107 %/°C and supports surge currents up to 100 A (IFSM, 8.3 ms half-sine), making it suitable for protecting MOSFET gates and microcontroller I/O against inductive switching transients and ESD events in harsh environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 100 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe DC rail margin. |
| VBR (Breakdown Voltage) | 111–123 V at IT = 1 mA - Avalanche onset range; ensures reliable triggering above nominal system voltage. |
| VC (Clamping Voltage) | 162 V at IPPM = 3.7 A - Peak voltage seen by protected circuit during 10/1000 µs surge; determines downstream component stress. |
| PPPM (Peak Pulse Power) | 600 W - Sustained transient energy handling capability under standardized 10/1000 µs waveform. |
| IFSM (Surge Current) | 100 A - Single half-sine (8.3 ms) forward surge rating; validates robustness against inrush or fault currents. |
| TJ max. | +150 °C - Maximum junction temperature; enables operation in under-hood automotive and industrial enclosures. |
| Package | SMB (DO-214AA) - Surface-mount footprint with 0.205" × 0.130" body; compatible with automated pick-and-place and reflow. |
Pinout & Package
Package: SMB (DO-214AA), unidirectional polarity with cathode band marking. Terminals are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference terminal | Connected to ground or return path; forms clamping loop with cathode during transient events. |
| Cathode | High-side transient input terminal | Connected to protected line (e.g., 12 V rail); avalanche conduction occurs from cathode to anode when V > VBR. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including body electronics and infotainment power rails. |
| Halogen-free & RoHS-compliant (HM3) | Meets environmental compliance requirements for industrial and consumer OEM production without brominated flame retardants. |
| 600 W peak pulse power (10/1000 µs) | Handles high-energy transients from relay coil decay or load dump without degradation. |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes overvoltage stress on downstream ICs compared to higher-ratio TVS devices. |
| MSL Level 1 (260 °C peak) | Enables single-reflow assembly without moisture sensitivity concerns or baking requirements. |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: Protecting 12 V supply inputs of BCM microcontrollers against load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed between VCC and GND, triggered within <1 ns of overvoltage event. Use Value: Limits transient voltage to ≤162 V, preventing latch-up or permanent damage to 3.3 V/5 V logic supplies downstream. |
Use Scenario: Shielding 24 V digital input channels in programmable logic controllers from field-wiring induced surges. IC Role / Device Role / Timing Role: Standoff protection element across input terminals, conducting only during >100 V transients. Use Value: Maintains <1.0 µA leakage at 24 V nominal, ensuring stable logic thresholds while surviving repeated 600 W pulses. |
| DC Motor Drive Power Stage | Telecom Power Supply Front-End |
Use Scenario: Safeguarding H-bridge MOSFET gate drivers from inductive kickback during PWM commutation. IC Role / Device Role / Timing Role: Clamping diode connected from driver output to ground, absorbing flyback energy. Use Value: Withstands 100 A IFSM surges and clamps gate-source voltage to safe levels, avoiding MOSFET avalanche failure. |
Use Scenario: Secondary-side overvoltage suppression on 48 V telecom rectifier outputs feeding base station backplanes. IC Role / Device Role / Timing Role: Final-stage transient suppressor before point-of-load regulators. Use Value: Delivers 600 W pulse handling with RθJL = 20 °C/W, enabling reliable operation without heatsinking in compact modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100AHE3_A/I | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification. | Suitable for commercial-grade industrial power supplies where automotive qualification is unnecessary. | Select when halogen-free requirement is waived and cost optimization is prioritized over automotive compliance. |
| SMBJ100CAHM3_A/I | Bidirectional variant with same VWM (100 V), symmetric clamping in both polarities. | Required for AC-coupled signal lines or differential buses where reverse polarity transients occur. | Choose only if bidirectional protection is mandated; otherwise, unidirectional SMBJ100AHM3_A/I offers lower leakage and tighter VBR tolerance. |
Compared with SMBJ100AHE3_A/I, the SMBJ100AHM3_A/I adds halogen-free construction and AEC-Q101 validation for automotive use; versus SMBJ100CAHM3_A/I, it provides superior unidirectional leakage control (<1.0 µA vs. doubled ID limit) and optimized clamping for DC rails.
Availability
SMBJ100AHM3_A/I is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC input stages, and telecom power supply front-ends requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ100AHM3_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 and application-specific performance.
The SMBJ series targets high-reliability transient suppression in automotive, industrial, and telecom systems, engineered to meet stringent surge immunity standards (IEC 61000-4-5) and AEC-Q101 stress testing protocols.
FAQ
What is the clamping voltage of SMBJ100AHM3_A/I at its rated peak pulse current?
The SMBJ100AHM3_A/I has a maximum clamping voltage (VC) of 162 V at a peak pulse current (IPPM) of 3.7 A under the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ100AHM3_A/I maintains this clamping performance across its specified operating temperature range.
Is SMBJ100AHM3_A/I qualified for automotive applications?
Yes, SMBJ100AHM3_A/I is AEC-Q101 qualified, as confirmed by Vishay's ordering code suffix "HM3" and documentation in datasheet 88392. This qualification covers stress tests including high-temperature operating life, temperature cycling, and mechanical shock - validating its suitability for under-hood and body electronics in passenger vehicles. The SMBJ100AHM3_A/I meets these requirements without derating.
What does the "HM3" suffix indicate in SMBJ100AHM3_A/I?
The "HM3" suffix in SMBJ100AHM3_A/I denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification. It distinguishes the part from "HE3" (RoHS + AEC-Q101 but not halogen-free) and "E3/M3" (commercial grade only). The "A/I" further specifies tape-and-reel packaging: 3200 units per 13-inch reel. This coding ensures precise material and compliance tracking for SMBJ100AHM3_A/I in regulated production environments.
How does SMBJ100AHM3_A/I compare to SMBJ100AHE3_A/I in terms of reliability?
SMBJ100AHM3_A/I exceeds SMBJ100AHE3_A/I in reliability for automotive and high-reliability industrial use due to its halogen-free molding compound and full AEC-Q101 qualification - including extended temperature cycling and humidity testing. While both share identical electrical specs (VWM, VBR, VC), the SMBJ100AHM3_A/I undergoes additional stress validation, making it the preferred choice where long-term field stability and regulatory compliance are mandatory.
Can SMBJ100AHM3_A/I be used in bidirectional signal protection?
No, SMBJ100AHM3_A/I is strictly unidirectional and must not be used for bidirectional signal lines. Its cathode-band polarity requires correct orientation relative to DC bias; reverse connection risks permanent failure. For bidirectional protection, Vishay specifies the SMBJ100CAHM3_A/I variant - which uses symmetric breakdown characteristics and no polarity marking. Using SMBJ100AHM3_A/I in place of a bidirectional TVS compromises protection integrity and violates design intent.
SMBJ100AHM3_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):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 162V
- Current - Peak Pulse (10/1000µs):
- 3.7A
- 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)
SMBJ100AHM3_A/I FAQ
1.How can I place an order for SMBJ100AHM3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100AHM3_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 SMBJ100AHM3_A/I reliable?
The price and inventory of SMBJ100AHM3_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 SMBJ100AHM3_A/I is usually 5 days.
3.What payment methods are accepted for SMBJ100AHM3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100AHM3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100AHM3_A/I?
SMBJ100AHM3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100AHM3_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 SMBJ100AHM3_A/I?
For technical support, including SMBJ100AHM3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100AHM3_A/I requirements.
6.How does Aetrix verify that SMBJ100AHM3_A/I is sourced from the original manufacturer or authorized distributors?
All SMBJ100AHM3_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 SMBJ100AHM3_A/I meets industry standards.
7.What is the process for return or replacement of SMBJ100AHM3_A/I?
All SMBJ100AHM3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100AHM3_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 SMBJ100AHM3_A/I part is unused and in its original packaging.
Return procedure for SMBJ100AHM3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100AHM3_A/I Tags
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