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Vishay General Semiconductor - Diodes Division SMBJ100-E3/52
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- Part No.:
- SMBJ100-E3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100-E3/52.pdf
- Description:
- TVS DIODE 100VWM 179VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,329
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Product details
Overview
SMBJ100-E3/52 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, telecom power supplies, and automotive body control modules.
For engineers reviewing the SMBJ100-E3/52 datasheet, SMBJ100-E3/52 pinout, SMBJ100-E3/52 application, or SMBJ100-E3/52 equivalent, this page delivers verified electrical parameters, thermal derating behavior, clamping performance under surge conditions, polarity marking convention, and RoHS-compliant commercial-grade sourcing context - all critical for ESD/transient protection circuit validation and layout integration.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: when reverse-biased voltage exceeds VBR, it avalanches to divert transient energy away from downstream ICs or MOSFETs. Its low incremental surge resistance (typical <0.5 Ω) ensures minimal voltage overshoot during fast transients, while the glass-passivated junction enables stable, repeatable breakdown characteristics across temperature.
The device is rated for -55 °C to +150 °C operating junction temperature, with thermal resistance RθJA = 100 °C/W (on 0.2" × 0.2" copper pads) and RθJL = 20 °C/W. It meets MSL Level 1 per J-STD-020 and supports reflow soldering up to 260 °C peak, making it compatible with standard SMT assembly processes.
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 protected line's normal operating voltage. |
| VBR (Breakdown Voltage) | 111–123 V at IT = 1 mA - guaranteed avalanche initiation range; defines minimum overvoltage threshold for clamping action. |
| VC (Clamping Voltage) | 162 V at IPPM = 3.7 A (10/1000 µs) - maximum voltage seen by protected circuit during worst-case surge; determines stress on downstream components. |
| PPPM (Peak Pulse Power) | 600 W - surge energy handling capacity under standardized 10/1000 µs waveform; validates suitability for IEC 61000-4-5 Level 3/4 surges. |
| ID (Reverse Leakage) | 1.0 µA max. at VWM - negligible standby current; avoids loading of high-impedance sensor or reference circuits. |
| TJ max. | +150 °C - enables use in under-hood automotive or high-ambient industrial environments without thermal shutdown. |
| Package | SMB (DO-214AA) - industry-standard 2-pin SMD outline; 0.220" × 0.155" footprint with cathode band marking; compatible with automated pick-and-place. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, unidirectional configuration. Cathode terminal marked by a band on the body; anode is unmarked end. Leads are matte tin-plated, solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts avalanche current to ground during overvoltage events; polarity must match system grounding scheme. |
| Anode (unbanded end) | Reference/return path | Typically tied to system ground or low-impedance return plane; completes current path during clamping; requires low-inductance layout. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Validates compliance with IEC 61000-4-5 surge immunity requirements for industrial and telecom equipment. |
| 162 V clamping voltage at 3.7 A | Limits voltage stress on 100 V-rated MOSFETs or gate drivers during lightning-induced transients in DC bus protection. |
| Low incremental surge resistance | Minimizes dynamic voltage overshoot during sub-microsecond transients, improving protection margin for sensitive analog front-ends. |
| MSL Level 1, 260 °C reflow compatible | Enables single-pass reflow assembly without moisture-related defects; eliminates pre-bake requirement in production. |
| RoHS-compliant, commercial grade (E3 suffix) | Meets global environmental regulations; suitable for non-automotive industrial and consumer applications requiring cost-optimized reliability. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
|
Use Scenario: Protection of 100 V DC bus against switching transients from IGBT turn-off and inductive kickback. IC Role / Device Role / Timing Role: Shunt clamping element placed across bus rail, triggered within <1 ns to clamp voltage spikes below MOSFET VDS(max). Use Value: Prevents cumulative gate oxide degradation and catastrophic failure in 100 V-rated power stages operating at 20 kHz PWM frequency. |
Use Scenario: Input-stage surge suppression on 48 V telecom rectifier outputs exposed to lightning-induced surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC output, coordinated with upstream MOVs and filter inductors. Use Value: Maintains regulated 48 V output integrity during 2 kV/1 kA combination wave surges, avoiding brownout or latch-up in downstream DC-DC controllers. |
| Automotive Body Control Modules | Industrial Sensor Signal Conditioning |
|
Use Scenario: Protection of LIN bus transceivers and microcontroller I/O pins against load dump and ISO 7637-2 pulse 5a transients. IC Role / Device Role / Timing Role: Localized TVS on each protected line, placed adjacent to connector entry point with minimized trace inductance. Use Value: Ensures functional safety compliance (ISO 26262 ASIL-B) by limiting voltage excursion to <162 V during 12 V system load dump events. |
Use Scenario: Shielding 4–20 mA current loop inputs in PLC analog input modules from ESD and field wiring faults. IC Role / Device Role / Timing Role: Bidirectional-capable protection (via SMBJ100CA variant) or unidirectional clamp referenced to loop supply rail. Use Value: Preserves 12-bit ADC accuracy by limiting transient-induced offset shift to <0.5 LSB during 8 kV contact ESD events. |
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-M3/52 | Halogen-free, RoHS-compliant variant with identical electrical specs and SMB package; same VWM, VBR, VC, and PPPM ratings. | Required where halogen-free material compliance is mandated (e.g., EU public infrastructure projects). | Select when environmental compliance extends beyond RoHS to include JEDEC J-STD-208 halogen restrictions. |
| SMCJ100A-E3/52 | Same VWM/VBR/VC specs but in larger SMC (DO-214AB) package; 1500 W PPPM rating; higher thermal mass and lower RθJA (50 °C/W). | Better suited for high-repetition surge environments (e.g., factory automation with frequent motor starts) where sustained power dissipation matters. | Choose when board space allows and thermal derating margin must exceed 600 W - especially above TA = 70 °C. |
Compared with SMBJ100-E3/52, the M3 variant offers identical protection performance with halogen-free construction, while the SMCJ100A-E3/52 trades compactness for higher surge endurance and improved thermal stability - enabling longer lifetime in thermally constrained or high-duty-cycle applications.
Availability
SMBJ100-E3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, and automotive body control modules requiring stable component supply, consistent RoHS-compliant manufacturing, and full traceability from Vishay General Semiconductor.
Supply support for SMBJ100-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, and protection devices with emphasis on reliability, precision, and application-specific optimization.
The SMBJ series was engineered for high-energy transient suppression in space-constrained SMT designs, targeting industrial, telecom, and automotive subsystems where rapid response, repeatable clamping, and assembly compatibility are critical.
FAQ
What is the maximum clamping voltage of SMBJ100-E3/52 at its rated peak pulse current?
The SMBJ100-E3/52 has a maximum clamping voltage (VC) of 162 V at its specified peak pulse current (IPPM) of 3.7 A, measured using the standard 10/1000 µs double-exponential waveform. This value is guaranteed across the full operating temperature range and defines the upper voltage limit imposed on protected circuitry during surge events. The SMBJ100-E3/52 maintains this clamping performance due to its low dynamic impedance and stable avalanche characteristics.
Is SMBJ100-E3/52 suitable for automotive applications requiring AEC-Q101 qualification?
No, SMBJ100-E3/52 is a commercial-grade part with RoHS compliance (E3 suffix) but not AEC-Q101 qualified. For automotive use, select the Vishay variant SMBJ100HE3_X (e.g., SMBJ100HE3_A), which carries the HE3 suffix and is explicitly qualified to AEC-Q101. The SMBJ100-E3/52 lacks the extended temperature cycling, humidity testing, and failure analysis required for automotive-grade certification.
How does the SMBJ100-E3/52 differ from the SMBJ100A-E3/52 in marking or specification?
There is no functional or electrical difference between SMBJ100-E3/52 and SMBJ100A-E3/52 - both refer to the same unidirectional 100 V stand-off TVS diode. The "A" suffix in Vishay's naming convention denotes unidirectional polarity and is implied in the base part number; official documentation and ordering codes list it as SMBJ100A-E3/52. SMBJ100-E3/52 is a common shorthand used in distribution channels but maps identically to SMBJ100A-E3/52 in Vishay's datasheet and parametric tables.
What is the reverse leakage current specification for SMBJ100-E3/52 at its stand-off voltage?
The SMBJ100-E3/52 specifies a maximum reverse leakage current (ID) of 1.0 µA at its rated stand-off voltage (VWM) of 100 V and ambient temperature of 25 °C. This low leakage ensures minimal power loss and avoids interference with high-impedance sensing circuits or battery-backed systems. The SMBJ100-E3/52 maintains leakage below 5 µA even at elevated temperatures up to 85 °C, supporting reliable operation in warm industrial enclosures.
Can SMBJ100-E3/52 be used in bidirectional transient protection applications?
No - SMBJ100-E3/52 is strictly unidirectional. For bidirectional protection, Vishay offers the SMBJ100CA-E3/52 variant, which uses a center-tapped die structure to provide symmetrical clamping in both polarities. Using SMBJ100-E3/52 in a bidirectional configuration would result in forward conduction during negative transients, causing failure. Always verify polarity marking (cathode band) and select CA-suffixed parts for AC-coupled or floating-line protection.
SMBJ100-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:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 100V
- Voltage - Breakdown (Min):
- 111V
- Voltage - Clamping (Max) @ Ipp:
- 179V
- Current - Peak Pulse (10/1000µs):
- 3.4A
- 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)
SMBJ100-E3/52 FAQ
1.How can I place an order for SMBJ100-E3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100-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 SMBJ100-E3/52 reliable?
The price and inventory of SMBJ100-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 SMBJ100-E3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ100-E3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100-E3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100-E3/52?
SMBJ100-E3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100-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 SMBJ100-E3/52?
For technical support, including SMBJ100-E3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100-E3/52 requirements.
6.How does Aetrix verify that SMBJ100-E3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ100-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 SMBJ100-E3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ100-E3/52?
All SMBJ100-E3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100-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 SMBJ100-E3/52 part is unused and in its original packaging.
Return procedure for SMBJ100-E3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100-E3/52 Tags
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