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Vishay General Semiconductor - Diodes Division SMBJ110A-M3/52
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- Part No.:
- SMBJ110A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ110A-M3/52.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:2,653
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Product details
Overview
SMBJ110A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in the SMB (DO-214AA) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 110 V stand-off voltage (VWM), 122–135 V breakdown voltage (VBR) at 1 mA, 177 V maximum clamping voltage (VC) at 3.4 A peak pulse current (IPPM), and 600 W peak pulse power rating with 10/1000 µs waveform - deployed in industrial motor drives and telecom power supplies.
For engineers reviewing the SMBJ110A-M3/52 datasheet, SMBJ110A-M3/52 pinout, SMBJ110A-M3/52 application, or SMBJ110A-M3/52 equivalent, this page delivers verified electrical parameters, thermal resistance (RθJA = 100 °C/W), polarity marking (cathode band), halogen-free RoHS compliance (M3 suffix), and real-world use context for surge immunity design in 48 V–110 V DC systems.
Technical Context
This unidirectional TVS diode operates as a voltage-clamped shunt protector: it remains high-impedance below VWM (110 V), triggers avalanche conduction at VBR (122–135 V), and limits transient voltage to ≤177 V during 10/1000 µs surges up to 3.4 A. Its glass-passivated junction ensures stable breakdown characteristics and low leakage (<1.0 µA at VWM).
Thermally, it sustains 150 °C max junction temperature with RθJL = 20 °C/W to lead and RθJA = 100 °C/W to ambient on standard 0.2" × 0.2" copper pads. The M3 suffix confirms halogen-free, RoHS-compliant construction qualified per JESD201 Class 2 whisker test and MSL Level 1 (260 °C reflow peak).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC rail margin for 48 V–110 V systems. |
| VBR (min/max) | 122 V / 135 V at 1 mA - Confirmed breakdown range ensuring reliable turn-on without premature triggering under normal operation. |
| VC @ IPPM | 177 V at 3.4 A - Clamped voltage during standardized 10/1000 µs surge; determines protected circuit's maximum transient exposure. |
| PPPM | 600 W - Peak pulse power handling capability; enables suppression of IEC 61000-4-5 Level 4 (4 kV) surges when properly mounted. |
| ID @ VWM | <1.0 µA - Reverse leakage current at rated stand-off voltage; ensures minimal power loss and no false triggering in standby. |
| TJ max. | +150 °C - Maximum junction temperature; supports operation in enclosed industrial enclosures with limited airflow. |
| RθJA | 100 °C/W - Thermal resistance to ambient on recommended PCB pad layout; informs heatsinking requirements for repetitive surge duty. |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD22-B102. Cathode identified by a single band on the body end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side connection point | Connected to ground or return path; completes shunt path during transient events. |
| Cathode | High-side connection point | Connected to protected line (e.g., 110 V DC rail); polarity band marks this terminal. |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables single-event suppression of high-energy transients common in industrial power distribution and relay switching. |
| 177 V clamping voltage at 3.4 A | Limits downstream IC stress to safe levels for 100 V-rated MOSFETs and gate drivers in motor control inverters. |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for export to EU, Japan, and China without compromising surge performance. |
| MSL Level 1, 260 °C peak reflow | Supports standard SMT assembly without moisture sensitivity concerns or pre-bake requirements. |
| 150 °C max junction temperature | Allows reliable operation in high-ambient environments such as base station power modules and railway electronics. |
Applications
| Industrial Motor Drives | Telecom Power Supplies |
|---|---|
Use Scenario: Protection of 110 V DC bus against inductive kickback from contactor switching and regenerative braking spikes. IC Role / Device Role / Timing Role: Shunt-type transient voltage suppressor placed directly across DC link capacitors. Use Value: Limits transient overvoltage to ≤177 V, preventing gate oxide failure in 200 V Si MOSFETs and sustaining system uptime. |
Use Scenario: Input-stage surge protection for -48 V or +110 V telecom rectifier outputs exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary clamping device on DC output rail prior to DC/DC converters and monitoring circuits. Use Value: Absorbs 600 W pulses without degradation, maintaining ±5% output regulation during IEC 61000-4-5 tests. |
| Automotive Body Control Modules | Industrial PLC I/O Cards |
Use Scenario: Protection of 12 V/24 V auxiliary power inputs upgraded to support 110 V DC auxiliary feeds in commercial vehicle platforms. IC Role / Device Role / Timing Role: Standoff-rated TVS on main power entry point, coordinated with upstream fuses and filters. Use Value: Withstands repeated load dump transients up to 130 V while maintaining <1 µA leakage for low-power sleep modes. |
Use Scenario: Field-side protection for analog input channels receiving 0–10 V or 4–20 mA signals referenced to 110 V DC supply rails. IC Role / Device Role / Timing Role: Rail-to-rail clamping device on sensor excitation lines and signal return paths. Use Value: Prevents latch-up in precision ADC front-ends by clamping fast ESD events (IEC 61000-4-2, ±8 kV contact) to <180 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110A-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 documentation. |
| SMCJ110A-M3 | Same VWM/VBR/VC ratings but in larger SMC (DO-214AB) package; higher IPPM (5.0 A) and PPPM (1500 W). | Better suited for higher-energy surges (e.g., outdoor telecom cabinets), requiring more PCB area and thermal mass. | Choose SMCJ110A-M3 only if 600 W is insufficient and board space allows larger footprint. |
Compared with SMBJ110A-M3/52, the E3 variant offers identical protection performance without halogen-free assurance, while the SMCJ110A-M3 delivers 2.5× higher surge capacity in a physically larger package - making SMBJ110A-M3/52 optimal for space-constrained 600 W-class industrial and telecom applications.
Availability
SMBJ110A-M3/52 is available at Aetrix Electronics and suitable for industrial motor drives, telecom power supplies, automotive body control modules, and PLC I/O cards requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMBJ110A-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 high-reliability transient suppression in harsh environments - targeting industrial automation, telecom infrastructure, and transportation systems where surge immunity and long-term stability are critical.
FAQ
What is the maximum clamping voltage of SMBJ110A-M3/52 under surge conditions?
The SMBJ110A-M3/52 has a maximum clamping voltage (VC) of 177 V at 3.4 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 standardized surge events. The SMBJ110A-M3/52 maintains this clamping performance across its specified operating temperature range (-55 °C to +150 °C).
Does SMBJ110A-M3/52 meet automotive qualification standards?
No - SMBJ110A-M3/52 is a commercial-grade part with halogen-free RoHS compliance (M3 suffix) but is not AEC-Q101 qualified. For automotive applications, Vishay offers the SMBJ110AHM3_X variant (e.g., SMBJ110AHM3_B/H), which carries the HM3 suffix and explicit AEC-Q101 qualification. The SMBJ110A-M3/52 is intended for industrial, telecom, and computing systems where AEC-Q101 is not required.
How does the M3 suffix affect the construction of SMBJ110A-M3/52?
The M3 suffix on SMBJ110A-M3/52 indicates halogen-free, RoHS-compliant construction meeting JESD201 Class 2 whisker resistance and MSL Level 1 moisture sensitivity (260 °C reflow peak). Unlike E3-suffix variants, M3 uses bromine- and chlorine-free molding compounds and plating chemistries - critical for compliance in EU, Japan, and other regulated markets. The SMBJ110A-M3/52 retains identical electrical and thermal specifications as its E3 counterpart.
What is the thermal resistance from junction to ambient for SMBJ110A-M3/52?
The SMBJ110A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on the minimum recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes still air and no additional heatsinking. For higher-duty-cycle applications, designers should consider RθJL = 20 °C/W to lead and optimize PCB copper area to maintain TJ ≤ 150 °C. The SMBJ110A-M3/52 thermal performance is validated per JEDEC standards.
Can SMBJ110A-M3/52 be used in bidirectional protection circuits?
No - SMBJ110A-M3/52 is a unidirectional TVS diode, identifiable by its cathode band marking. For bidirectional protection, Vishay specifies the CA-suffixed variant (e.g., SMBJ110CA-M3/52), which provides symmetrical clamping in both polarities. Using SMBJ110A-M3/52 in AC or floating signal paths risks reverse breakdown and permanent damage. Always match device polarity to circuit topology: SMBJ110A-M3/52 for DC rail protection with defined ground reference.
SMBJ110A-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 110V
- Voltage - Breakdown (Min):
- 122V
- Voltage - Clamping (Max) @ Ipp:
- 177V
- 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)
SMBJ110A-M3/52 FAQ
1.How can I place an order for SMBJ110A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ110A-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 SMBJ110A-M3/52 reliable?
The price and inventory of SMBJ110A-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 SMBJ110A-M3/52 is usually 5 days.
3.What payment methods are accepted for SMBJ110A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ110A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ110A-M3/52?
SMBJ110A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ110A-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 SMBJ110A-M3/52?
For technical support, including SMBJ110A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ110A-M3/52 requirements.
6.How does Aetrix verify that SMBJ110A-M3/52 is sourced from the original manufacturer or authorized distributors?
All SMBJ110A-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 SMBJ110A-M3/52 meets industry standards.
7.What is the process for return or replacement of SMBJ110A-M3/52?
All SMBJ110A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ110A-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 SMBJ110A-M3/52 part is unused and in its original packaging.
Return procedure for SMBJ110A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ110A-M3/52 Tags
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