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Vishay General Semiconductor - Diodes Division SMBJ100A-M3/5B
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- Part No.:
- SMBJ100A-M3/5B
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100A-M3/5B.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,541
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Product details
Overview
SMBJ100A-M3/5B 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 standoff voltage (VWM), 111–123 V breakdown range (VBR at 1 mA), 162 V maximum clamping voltage (VC) at 3.7 A peak pulse current, and 600 W peak pulse power rating per 10/1000 µs waveform - deployed in industrial motor drives, telecom power supplies, and automotive body control modules.
For engineers reviewing the SMBJ100A-M3/5B datasheet, SMBJ100A-M3/5B pinout, SMBJ100A-M3/5B application, or SMBJ100A-M3/5B equivalent, key selection criteria include clamping performance under 3.7 A surge, thermal resistance (RθJA = 100 °C/W), halogen-free RoHS compliance (M3 suffix), unidirectional polarity with cathode band marking, and compatibility with automated SMT placement on standard PCB pad layouts.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when transient voltage exceeds VBR, it avalanches into low-impedance conduction to divert surge current away from downstream ICs or MOSFETs. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive transients.
Designed for unidirectional DC line protection, SMBJ100A-M3/5B exhibits 1.0 µA max reverse leakage at 100 V, 150 °C max junction temperature, and meets J-STD-020 MSL Level 1 - enabling lead-free reflow without moisture sensitivity concerns. It is not rated for bidirectional AC applications; those require CA-suffix variants like SMBJ100CA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 100 V - maximum continuous DC or RMS voltage the device blocks without clamping; sets operating margin before protection activates. |
| VBR (Breakdown Voltage) | 111–123 V at 1 mA - guaranteed avalanche initiation range; defines precise turn-on threshold for transient suppression. |
| VC (Clamping Voltage) | 162 V at IPPM = 3.7 A - maximum voltage seen by protected circuit during full-rated 600 W surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W (10/1000 µs waveform) - surge energy-handling capability; validates suitability for IEC 61000-4-5 Level 3/4 surges in industrial environments. |
| RθJA (Junction-to-Ambient) | 100 °C/W - thermal resistance with standard 0.2" × 0.2" copper pads; informs derating requirements above 25 °C ambient. |
| IFSM (Surge Current) | 100 A (8.3 ms half-sine) - non-repetitive forward surge rating; supports protection against inductive switch-off events in power electronics. |
| Package | SMB (DO-214AA) - standardized surface-mount outline with 5.59 mm × 4.06 mm footprint; compatible with high-speed pick-and-place and reflow soldering. |
Pinout & Package
Package: SMB (DO-214AA), molded plastic case with matte tin-plated leads, UL 94 V-0 rated compound, cathode indicated by a band on the body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to lower-potential side of protected line (e.g., GND or return path); enables unidirectional clamping from cathode to anode. |
| Cathode | Current exit terminal during avalanche conduction | Connected to higher-potential side (e.g., +100 V rail); avalanche occurs when cathode-to-anode voltage exceeds VBR, shunting surge to ground. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates robustness against lightning-induced surges and inductive switching spikes in 24–48 V industrial systems. |
| 162 V clamping at 3.7 A | Limits voltage overshoot to safe levels for 100 V-rated MOSFETs and gate drivers during transient events. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for export-controlled and green-certified end equipment. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free assembly without baking or special handling; reduces manufacturing cost and risk. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1 µA) over temperature and lifetime, critical for long-term field reliability. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
|
Use Scenario: Protection of 100 V DC bus against voltage spikes from contactor switching and regenerative braking. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed across input capacitor to clamp transients before they reach DC-DC controllers and gate drivers. Use Value: Limits bus overvoltage to ≤162 V during 3.7 A surges, preventing damage to 150 V-rated SiC MOSFETs and maintaining system uptime. |
Use Scenario: Input-stage surge protection in 48 V telecom rectifiers exposed to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary-line TVS connected between +48 V and return, activated within <1 ns to suppress 1 kV/0.5 kA transients. Use Value: Clamps surge voltage below 162 V while absorbing 600 W, preserving upstream EMI filters and downstream PMICs without derating. |
| Automotive Body Control Modules | Consumer Appliance Power Inputs |
|
Use Scenario: Protection of 12 V–100 V auxiliary power rails in BCMs subjected to load dump per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Unidirectional TVS mounted at connector entry point to divert load dump energy before reaching microcontrollers and CAN transceivers. Use Value: Withstands 100 A 8.3 ms surge and clamps to 162 V, ensuring continued operation of AEC-Q100 qualified ICs during battery disconnect events. |
Use Scenario: Overvoltage safeguard on AC/DC adapter inputs in white goods exposed to mains transients and neutral interruption. IC Role / Device Role / Timing Role: Secondary-side TVS on DC output rail to protect MCU power pins and sensor interfaces from reflected surges. Use Value: Provides certified 600 W surge immunity with <1 µA leakage at 100 V, eliminating false resets and extending product service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100A-E3/5B | Same electrical specs, but RoHS-compliant with brominated flame retardant (non-halogen-free); JEDEC MSL Level 1, 260 °C. | Acceptable where halogen-free material is not mandated (e.g., non-EU commercial products). | Select SMBJ100A-E3/5B if halogen content is unrestricted and cost optimization is prioritized. |
| SMBJ100AHM3_B/I | AEC-Q101 qualified variant with identical VWM, VBR, and VC; same M3 halogen-free construction plus automotive qualification. | Required for automotive ECUs, ADAS modules, or any application requiring AEC-Q101 compliance. | Choose SMBJ100AHM3_B/I when automotive-grade reliability and qualification documentation are mandatory. |
Compared with SMBJ100A-M3/5B, SMBJ100A-E3/5B offers identical protection performance without halogen-free assurance, while SMBJ100AHM3_B/I adds AEC-Q101 validation for automotive use - making the M3/5B optimal for industrial and telecom applications needing halogen-free compliance without automotive certification overhead.
Availability
SMBJ100A-M3/5B is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and consumer appliance power inputs requiring stable component supply, halogen-free compliance, and high-volume SMT manufacturability.
Supply support for SMBJ100A-M3/5B 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 optoelectronics with emphasis on reliability, efficiency, and application-specific design.
The SMBJ series was developed for high-energy transient suppression in space-constrained surface-mount applications, targeting industrial, telecom, and automotive markets where robustness, fast response, and standardized packaging are critical.
FAQ
What is the clamping voltage of SMBJ100A-M3/5B at its rated peak pulse current?
The SMBJ100A-M3/5B has a maximum clamping voltage (VC) of 162 V at its rated peak pulse current of 3.7 A (10/1000 µs waveform). This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuits during full-rated surge events. The SMBJ100A-M3/5B maintains this clamping performance consistently due to its glass-passivated junction and controlled avalanche characteristics.
Is SMBJ100A-M3/5B suitable for bidirectional AC line protection?
No, SMBJ100A-M3/5B is a unidirectional TVS diode intended only for DC or single-polarity transient suppression. Its cathode band marking and asymmetric IV curve mean it conducts only when cathode voltage exceeds anode voltage by ≥VBR. For bidirectional AC protection, the SMBJ100CA variant must be used - the SMBJ100A-M3/5B lacks symmetrical breakdown in both directions and will fail under reverse-biased AC transients.
Does SMBJ100A-M3/5B meet automotive qualification standards?
The SMBJ100A-M3/5B is not AEC-Q101 qualified. It is a commercial-grade, halogen-free, RoHS-compliant device. For automotive applications requiring AEC-Q101 validation, the functionally equivalent SMBJ100AHM3_B/I variant should be selected - it shares identical electrical parameters and packaging but adds formal automotive qualification and extended reliability testing. The SMBJ100A-M3/5B remains appropriate for industrial and telecom use cases.
What is the thermal resistance and how does it affect SMBJ100A-M3/5B derating?
The SMBJ100A-M3/5B has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads. This means each watt of sustained power dissipation raises junction temperature by 100 °C above ambient. Since its steady-state power rating (PD) is 5.0 W at 50 °C, designers must apply derating curves (per Fig. 2 in Vishay Doc. 88392) above 50 °C ambient - for example, at 100 °C ambient, usable PD drops to ~2.5 W. The SMBJ100A-M3/5B's RθJA directly governs layout-dependent thermal performance.
How does the M3 suffix impact the compliance and processing of SMBJ100A-M3/5B?
The M3 suffix on SMBJ100A-M3/5B indicates halogen-free, RoHS-compliant construction using bromine- and chlorine-free flame retardants in the molding compound, meeting IEC 61249-2-21 requirements. It also confirms compliance with JESD201 Class 2 whisker resistance and JEDEC MSL Level 1 handling - allowing direct 260 °C lead-free reflow without pre-baking. The SMBJ100A-M3/5B thus satisfies strict environmental mandates and simplifies high-yield SMT assembly in regulated markets.
SMBJ100A-M3/5B 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):
- 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:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ100A-M3/5B FAQ
1.How can I place an order for SMBJ100A-M3/5B through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100A-M3/5B 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 SMBJ100A-M3/5B reliable?
The price and inventory of SMBJ100A-M3/5B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ100A-M3/5B is usually 5 days.
3.What payment methods are accepted for SMBJ100A-M3/5B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100A-M3/5B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100A-M3/5B?
SMBJ100A-M3/5B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100A-M3/5B 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 SMBJ100A-M3/5B?
For technical support, including SMBJ100A-M3/5B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100A-M3/5B requirements.
6.How does Aetrix verify that SMBJ100A-M3/5B is sourced from the original manufacturer or authorized distributors?
All SMBJ100A-M3/5B 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 SMBJ100A-M3/5B meets industry standards.
7.What is the process for return or replacement of SMBJ100A-M3/5B?
All SMBJ100A-M3/5B units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100A-M3/5B, 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 SMBJ100A-M3/5B part is unused and in its original packaging.
Return procedure for SMBJ100A-M3/5B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100A-M3/5B Tags
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