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Vishay General Semiconductor - Diodes Division SMBJ100A-E3/52
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- Part No.:
- SMBJ100A-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100A-E3/52.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,020
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Product details
Overview
SMBJ100A-E3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power 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, and 600 W peak pulse power rating with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the SMBJ100A-E3/52 datasheet, SMBJ100A-E3/52 pinout, SMBJ100A-E3/52 application, or SMBJ100A-E3/52 equivalent, key selection criteria include clamping voltage margin relative to protected circuit rail, surge current capability under real-world transient profiles, thermal derating above 25 °C ambient, and compatibility with automated SMT assembly processes.
Technical Context
This TVS operates as a unidirectional avalanche diode, triggered when reverse voltage exceeds its breakdown threshold (VBR = 111–123 V), entering low-impedance clamping mode to divert surge energy away from downstream components. Its glass-passivated junction ensures stable breakdown characteristics and long-term reliability under repetitive transients.
Designed for 10/1000 µs waveform compliance per ANSI/IEEE C62.35, it delivers 3.7 A peak pulse current (IPPM) at 162 V clamping, with <0.01% duty cycle capability and thermal resistance of 100 °C/W (junction-to-ambient) on standard 0.2" × 0.2" copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 100 V - Maximum continuous reverse voltage before significant leakage; sets upper limit for normal operating rail protection. |
| VBR (Breakdown Voltage) | 111–123 V at 1 mA - Confirmed avalanche initiation range; defines minimum overvoltage threshold for clamping activation. |
| VC (Clamping Voltage) | 162 V at IPPM = 3.7 A - Measured peak voltage across device during 10/1000 µs surge; determines worst-case stress on protected IC. |
| PPPM (Peak Pulse Power) | 600 W - Sustained for single 10/1000 µs transient; defines energy-handling capacity without failure. |
| ID (Reverse Leakage) | 1.0 µA max at VWM - Ensures minimal standby power loss and signal integrity in high-impedance circuits. |
| TJ max | 150 °C - Maximum junction temperature; constrains layout thermal design and ambient operating envelope. |
| RθJA | 100 °C/W - Junction-to-ambient thermal resistance on standard PCB pad; used to calculate temperature rise under DC bias or repetitive surges. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile plastic case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Polarity marked by cathode band; anode and cathode terminals are non-reversible for unidirectional operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | High-side connection to protected line | Reverse-biased during normal operation; conducts surge current toward ground when VLINE > VBR. |
| Anode | Ground reference terminal | Provides return path for clamped surge current; must connect to low-impedance system ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 3/4 surges without derating in compact SMB footprint. |
| 162 V clamping voltage at 3.7 A | Provides ≥30 V margin above 100 V rail, preventing latch-up or overvoltage damage to 100 V-rated MOSFETs and controllers. |
| Glass passivated junction | Ensures stable VBR over 1000+ surge events and eliminates parameter drift due to humidity or contamination. |
| MSL Level 1 (260 °C reflow) | Supports lead-free reflow soldering without preconditioning; compatible with standard SMT production lines. |
| AEC-Q101 qualified variant available | HE3 suffix option meets automotive-grade reliability requirements for engine control and ADAS power rails. |
Applications
| Industrial Motor Drive DC Bus Protection | Telecom PoE Power Input Stage |
|---|---|
|
Use Scenario: Suppresses switching spikes and load dump transients on 96 V DC bus feeding H-bridge inverters. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC+ and chassis ground to clamp positive-going surges only. Use Value: Limits bus voltage to ≤162 V during 600 W transients, protecting 120 V rated IGBT gate drivers and current sense amplifiers. |
Use Scenario: Guards 48–57 V PoE power input against lightning-induced surges and hot-swap transients in network switches. IC Role / Device Role / Timing Role: Standoff-rated TVS on primary side of isolated DC/DC converter input filter. Use Value: Clamps 10/1000 µs surges to 162 V while maintaining <1 µA leakage at 57 V, preserving efficiency and UL isolation integrity. |
| Automotive Body Control Module (BCM) Power Rail | Industrial PLC Analog Input Protection |
|
Use Scenario: Protects 12 V–100 V auxiliary power rail in BCM against load dump per ISO 7637-2 Pulse 5a. IC Role / Device Role / Timing Role: Primary overvoltage clamp on switched battery feed to microcontroller and CAN transceivers. Use Value: Withstands 3.7 A peak surge at 162 V clamping, ensuring MCU reset logic remains functional during 120 V/100 ms load dump events. |
Use Scenario: Shields 4–20 mA analog input front-end from ESD and field-wiring transients in factory automation sensors. IC Role / Device Role / Timing Role: Low-leakage TVS on signal line referenced to local ground, upstream of precision op-amp buffer. Use Value: 1.0 µA max leakage at 100 V prevents offset error in 24-bit ADC systems; fast response avoids signal distortion during 8 kV contact ESD. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA-E3/52 | Bidirectional version; symmetric VBR = 111–123 V in both polarities; same VC = 162 V and PPPM = 600 W. | Required where AC-coupled or dual-polarity signal lines (e.g., RS-485, CAN) need protection without polarity assumptions. | Select SMBJ100CA-E3/52 only if bidirectional clamping is explicitly required; unidirectional SMBJ100A-E3/52 offers lower leakage in DC applications. |
| SMCJ100A-E3/52 | Larger SMC (DO-214AB) package; same VWM/VBR/VC ratings but higher IPPM = 10.3 A and PPPM = 1500 W. | Suitable for higher-energy transients (e.g., IEC 61000-4-5 Level 4) where PCB space allows larger footprint and thermal mass. | Choose SMCJ100A-E3/52 when surge energy exceeds 600 W capability; SMBJ100A-E3/52 remains optimal for space-constrained 600 W designs. |
Compared with SMBJ100CA-E3/52 and SMCJ100A-E3/52, the SMBJ100A-E3/52 provides the best balance of 600 W surge handling, 100 V standoff, and SMB footprint for DC power rail protection - enabling direct integration into dense industrial and telecom PCB layouts without sacrificing clamping performance or thermal margin.
Availability
SMBJ100A-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom PoE power inputs, automotive body control modules, and PLC analog input stages requiring stable component supply and RoHS-compliant manufacturing.
Supply support for SMBJ100A-E3/52 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, power efficiency, and automotive qualification.
The SMBJ series is engineered for high-energy transient suppression in harsh environments - targeting industrial power conversion, automotive electronics, and infrastructure equipment where consistent clamping performance and long-term stability are critical.
FAQ
What is the maximum clamping voltage of SMBJ100A-E3/52 under standard test conditions?
The SMBJ100A-E3/52 has a maximum clamping voltage (VC) of 162 V when subjected to its rated peak pulse current of 3.7 A using a 10/1000 µs waveform. This value is measured at TA = 25 °C with device mounted on 0.2" × 0.2" copper pads, and represents the worst-case voltage seen by downstream components during surge events. The SMBJ100A-E3/52 maintains this clamping performance across its specified operating temperature range.
Is SMBJ100A-E3/52 suitable for protecting 100 V DC power rails?
Yes, SMBJ100A-E3/52 is specifically designed for 100 V DC rail protection, with a 100 V stand-off voltage (VWM) and 111–123 V breakdown range that ensures reliable blocking during normal operation while triggering promptly during overvoltage events. Its 162 V clamping voltage provides a defined 62 V safety margin above the rail, making SMBJ100A-E3/52 appropriate for safeguarding 100 V-rated MOSFETs, gate drivers, and DC/DC controllers.
Does SMBJ100A-E3/52 meet automotive qualification standards?
The base SMBJ100A-E3/52 is commercial-grade and RoHS-compliant, but not AEC-Q101 qualified. However, Vishay offers the automotive-qualified variant SMBJ100AHE3_X (where "_X" denotes revision code), which carries the HE3 suffix and meets AEC-Q101 stress testing requirements for use in automotive body electronics and powertrain subsystems. Always verify suffix and ordering code when selecting for automotive applications.
What is the thermal resistance of SMBJ100A-E3/52, and how does it affect layout design?
The SMBJ100A-E3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads per terminal. This value directly impacts PCB thermal design: for example, at 5.0 W steady-state dissipation (PD), junction temperature rise would be ~500 °C - exceeding the 150 °C limit. Hence, SMBJ100A-E3/52 is intended for transient-only operation; layout must prioritize low-inductance grounding and avoid sustained DC power dissipation.
How does SMBJ100A-E3/52 differ from SMBJ100CA-E3/52 in circuit implementation?
SMBJ100A-E3/52 is unidirectional and requires correct polarity placement - cathode to the protected line, anode to ground - to suppress only positive-going transients. In contrast, SMBJ100CA-E3/52 is bidirectional with no polarity marking and clamps surges of either polarity, making it suitable for AC-coupled or differential signal lines like RS-485. Using SMBJ100A-E3/52 in place of SMBJ100CA-E3/52 on bidirectional paths will leave negative transients unprotected.
SMBJ100A-E3/52 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-E3/52 FAQ
1.How can I place an order for SMBJ100A-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100A-E3/52 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-E3/52 reliable?
The price and inventory of SMBJ100A-E3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ100A-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ100A-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100A-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100A-E3/52?
SMBJ100A-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100A-E3/52 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-E3/52?
For technical support, including SMBJ100A-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100A-E3/52 requirements.
6.How does Aetrix verify that SMBJ100A-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ100A-E3/52 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-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ100A-E3/52?
All SMBJ100A-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100A-E3/52, 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-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ100A-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100A-E3/52 Tags
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Diodes Incorporated
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Diodes Incorporated
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