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Vishay General Semiconductor - Diodes Division SMBJ100CA-M3/52
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- Part No.:
- SMBJ100CA-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ100CA-M3/52.pdf
- Description:
- TVS DIODE 100VWM 162VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,340
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Product details
Overview
SMBJ100CA-M3/52 from Vishay General Semiconductor is a bidirectional 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 and telecom line cards.
For engineers reviewing the SMBJ100CA-M3/52 datasheet, SMBJ100CA-M3/52 pinout, SMBJ100CA-M3/52 application, or SMBJ100CA-M3/52 equivalent, key selection criteria include bidirectional surge clamping capability, low clamping ratio (VC/VBR ≈ 1.45), halogen-free RoHS-compliant construction (M3 suffix), and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped crowbar during transient events: when reverse voltage exceeds VBR, it avalanches into low-impedance conduction to shunt surge current away from downstream circuitry. Its bidirectional symmetry enables protection of AC-coupled or floating signal paths without polarity constraints.
Thermal performance is defined by RθJA = 100 °C/W (typ.) and RθJL = 20 °C/W (typ.), with junction temperature rated from –55 °C to +150 °C. It meets MSL Level 1 per J-STD-020 and supports peak surge currents up to 3.7 A under standardized 10/1000 µs waveform conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 100 V - Maximum continuous reverse operating voltage before significant leakage; defines safe operating margin below clamping threshold |
| VBR (min/max) | 111 V / 123 V at 1 mA - Breakdown onset range; ensures reliable triggering above normal operating voltage |
| VC @ IPPM | 162 V at 3.7 A - Clamped voltage during 600 W transient; determines maximum stress imposed on protected ICs |
| PPPM | 600 W - Peak pulse power handling with 10/1000 µs waveform; validates robustness against lightning-induced surges |
| ID @ VWM | 1.0 µA max - Reverse leakage at stand-off voltage; critical for low-power sensor and battery-backed circuits |
| Package | SMB (DO-214AA) - Standardized surface-mount outline with 5.59 mm × 4.06 mm footprint and 2.20 mm height; optimized for high-density PCB layouts |
| Construction | Halogen-free, RoHS-compliant (M3 suffix); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, bidirectional configuration with no polarity marking. Terminals are symmetric anode/cathode pair; both ends function identically under reverse or forward transient conditions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (either end) | Transient return path | Provides low-impedance shunt to ground or rail during overvoltage; bidirectional symmetry eliminates orientation dependency |
| Cathode (either end) | Transient return path | Functionally identical to anode terminal; dual-terminal symmetry enables placement across differential or AC lines without polarity check |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power | Validated under 10/1000 µs waveform; sufficient for IEC 61000-4-5 Level 3 (1 kV/2 Ω) surge immunity compliance |
| Bidirectional clamping | Enables protection of AC-coupled interfaces (e.g., RS-485, CAN bus, Ethernet PHY) without external polarity management |
| Low clamping ratio (VC/VBR ≈ 1.45) | Minimizes voltage overshoot during transients, reducing risk of latch-up or gate oxide damage in protected MOSFETs and ICs |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and reflow at 260 °C peak; eliminates bake requirements prior to assembly |
| Halogen-free & RoHS-compliant (M3) | Meets environmental compliance for industrial and telecom equipment shipped globally; supports lead-free reflow profiles |
Applications
| Industrial Power Supply Input Protection | RS-485 Data Line Surge Protection |
|---|---|
Use Scenario: Protecting primary-side rectifier outputs and DC bus inputs against inductive switching spikes and lightning-induced surges in programmable logic controller (PLC) power modules. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed across input rails to clamp transients before they reach bulk capacitors and switching controllers. Use Value: Limits voltage excursions to ≤162 V during 600 W surges, preventing overvoltage failure of 200 V-rated electrolytic capacitors and PWM controllers. |
Use Scenario: Safeguarding half-duplex RS-485 transceivers in factory automation networks exposed to ground potential differences and ESD events. IC Role / Device Role / Timing Role: Placed differentially across A/B bus lines to suppress common-mode transients while preserving signal integrity up to 10 Mbps. Use Value: Maintains data reliability under IEC 61000-4-4 EFT (4 kV) and IEC 61000-4-5 surge (0.5 kV) tests due to sub-10 ns response time and symmetrical clamping. |
| Automotive Body Control Module (BCM) Sensor Inputs | Telecom DSL Line Card Overvoltage Protection |
Use Scenario: Shielding analog sensor inputs (e.g., temperature, pressure) in BCMs from load dump and ISO 7637-2 pulse 5a transients. IC Role / Device Role / Timing Role: Connected between sensor signal line and chassis ground to divert surge energy away from precision ADC front-ends. Use Value: Withstands 100 V stand-off and clamps to 162 V, ensuring protected op-amps remain within absolute maximum ratings during 12 V system load dump events. |
Use Scenario: Front-end protection for ADSL/VDSL line drivers subjected to longitudinal surges on twisted-pair copper loops. IC Role / Device Role / Timing Role: Mounted across tip/ring terminals to absorb induced lightning surges before reaching transformer-coupled interface ICs. Use Value: 600 W rating and 162 V clamping enable compliance with GR-1089-CORE Class A telecom surge requirements without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ100CA-E3/52 | Same electrical specs; RoHS-compliant but not halogen-free (E3 vs. M3) | Acceptable where halogen-free requirement is not mandated (e.g., non-EU commercial equipment) | Select E3 for cost-sensitive, non-halogen-restricted designs; verify regional compliance requirements |
| SMCJ100CA-M3 | Higher 1500 W PPPM, larger SMC (DO-214AB) package, same VWM/VC ratings | Used where higher surge margin is needed (e.g., outdoor telecom cabinets), but requires larger PCB area | Choose SMCJ100CA-M3 only if 600 W is insufficient; confirm layout space and thermal pad compatibility |
Compared with SMBJ100CA-M3/52, the E3 variant offers identical protection performance without halogen-free assurance, while the SMCJ100CA-M3 delivers 2.5× higher surge capacity in a physically larger package - making SMBJ100CA-M3/52 optimal for space-constrained, environmentally regulated industrial and telecom PCBs requiring precise 600 W clamping.
Availability
SMBJ100CA-M3/52 is available at Aetrix Electronics and suitable for industrial power supply input protection, RS-485 data line surge suppression, automotive BCM sensor inputs, and telecom DSL line card overvoltage protection requiring stable component supply and halogen-free compliance.
Supply support for SMBJ100CA-M3/52 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, efficiency, and application-specific optimization.
The SMBJ series is engineered for robust transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and automotive electronics where consistent clamping performance and long-term stability under thermal cycling are essential.
FAQ
What is the maximum clamping voltage of SMBJ100CA-M3/52 under standard test conditions?
The SMBJ100CA-M3/52 has a maximum clamping voltage (VC) of 162 V at 3.7 A peak pulse current (IPPM) using the 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and defines the upper voltage limit imposed on protected circuitry during transient events. The SMBJ100CA-M3/52 maintains this clamping performance across its full operating temperature range (–55 °C to +150 °C).
Is SMBJ100CA-M3/52 suitable for bidirectional signal line protection?
Yes, SMBJ100CA-M3/52 is explicitly designed for bidirectional applications, as indicated by the "CA" suffix. Its symmetrical VBR characteristics (111–123 V in both directions) allow it to protect AC-coupled or floating interfaces such as RS-485, CAN, and Ethernet PHY lines without polarity concerns. The SMBJ100CA-M3/52 exhibits identical clamping behavior regardless of voltage polarity applied across its terminals.
What does the "M3" suffix signify in SMBJ100CA-M3/52?
"M3" denotes halogen-free, RoHS-compliant construction with matte tin-plated leads meeting J-STD-002 solderability and JESD 22-B102 whisker resistance standards. Unlike the E3 variant, M3 ensures compliance with strict environmental regulations including EU RoHS Annex II and JEDEC JS709E. The SMBJ100CA-M3/52 is certified to MSL Level 1 and supports peak reflow temperatures up to 260 °C.
How does SMBJ100CA-M3/52 compare to unidirectional variants like SMBJ100A-M3/52?
The SMBJ100CA-M3/52 differs from unidirectional SMBJ100A-M3/52 in polarity behavior: CA provides symmetrical clamping in both directions, while "A" types conduct only in reverse bias and block forward current. SMBJ100CA-M3/52 is required for AC or differential line protection; SMBJ100A-M3/52 suits DC rail-to-ground protection only. Both share identical VWM, VC, and PPPM ratings.
What PCB layout guidance applies to SMBJ100CA-M3/52 for optimal thermal and surge performance?
For optimal performance, mount SMBJ100CA-M3/52 on minimum 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal, per Vishay's recommended pad layout. This minimizes thermal resistance (RθJA = 100 °C/W typ.) and sustains 600 W pulse power. Avoid narrow traces between the SMBJ100CA-M3/52 and protected node - use short, wide connections to reduce inductance and preserve clamping speed.
SMBJ100CA-M3/52 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMBJ100CA-M3/52 FAQ
1.How can I place an order for SMBJ100CA-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ100CA-M3/52 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 SMBJ100CA-M3/52 reliable?
The price and inventory of SMBJ100CA-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ100CA-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ100CA-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ100CA-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ100CA-M3/52?
SMBJ100CA-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ100CA-M3/52 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 SMBJ100CA-M3/52?
For technical support, including SMBJ100CA-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ100CA-M3/52 requirements.
6.How does Aetrix verify that SMBJ100CA-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ100CA-M3/52 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 SMBJ100CA-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ100CA-M3/52?
All SMBJ100CA-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ100CA-M3/52, 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 SMBJ100CA-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ100CA-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ100CA-M3/52 Tags
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