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Vishay General Semiconductor - Diodes Division SMCJ110A-M3/57T
- Part No.:
- SMCJ110A-M3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110A-M3/57T.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,539
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Product details
Overview
SMCJ110A-M3/57T from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed for robust overvoltage protection of DC power rails and signal lines. It features a 110 V standoff voltage (VWM), 122–135 V breakdown range (VBR at 1 mA), 177 V maximum clamping voltage (VC) at 8.5 A peak pulse current, and 1500 W peak pulse power rating with 10/1000 µs waveform - deployed in automotive power modules, industrial motor drives, and telecom interface protection.
For engineers reviewing the SMCJ110A-M3/57T datasheet, SMCJ110A-M3/57T pinout, SMCJ110A-M3/57T application, or SMCJ110A-M3/57T equivalent, key selection criteria include clamping performance under 8.5 A surge, thermal resistance (RθJA = 75 °C/W), halogen-free RoHS compliance (M3 suffix), and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ110A-M3/57T operates as a unidirectional avalanche diode, leveraging glass-passivated junction technology to achieve sub-nanosecond response time and low incremental surge resistance. Its clamping behavior is defined by a 10/1000 µs double-exponential surge waveform per ANSI/IEEE C62.35, with derating above 25 °C per Fig. 2 in the datasheet.
Mounted on standard 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal, it delivers 1500 W peak pulse power while maintaining a maximum junction temperature of +150 °C and meeting MSL Level 1 per J-STD-020 (reflow peak 260 °C). Polarity is marked by a cathode band; no marking applies to bidirectional variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM (Stand-off Voltage) | 110 V - Maximum continuous reverse operating voltage before significant leakage; defines safe DC rail margin for 110 V nominal systems. |
| VBR (Breakdown Voltage) | 122–135 V at 1 mA - Confirmed avalanche initiation range; ensures reliable triggering above system transients but below damage threshold. |
| VC (Clamping Voltage) | 177 V at 8.5 A (10/1000 µs) - Actual voltage seen by protected circuit during worst-case surge; critical for IC/MOSFET survivability. |
| PPPM (Peak Pulse Power) | 1500 W - Sustained energy absorption capability under standardized surge; enables protection against IEC 61000-4-5 Level 4 surges. |
| RθJA (Thermal Resistance) | 75 °C/W - Junction-to-ambient thermal impedance on recommended pad layout; determines steady-state power dissipation limit (6.5 W at TA = 50 °C). |
| TJ max. | +150 °C - Absolute maximum junction temperature; sets upper boundary for thermal design in enclosed enclosures or high ambient environments. |
| Package | SMC (DO-214AB) - Surface-mount outline with 2.06 mm height and 7.75 mm length; compatible with standard SMT pick-and-place and reflow profiles. |
Pinout & Package
SMCJ110A-M3/57T uses the SMC (DO-214AB) surface-mount package: molded epoxy case with matte tin-plated leads, UL 94 V-0 flammability rating, and polarity indicated by a single cathode band on the body. Leads are solderable per J-STD-002 and JESD 22-B102, with M3 suffix denoting halogen-free, RoHS-compliant construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Low-side reference node | Connected to ground or low-voltage return path; forms current path during reverse-biased surge conduction. |
| Cathode | High-side connection point | Connected to protected line (e.g., 110 V rail); marked by visible band; carries full surge current into ground via anode. |
Key Features
| Feature | Design Value |
|---|---|
| Low-profile SMC package | Enables compact PCB layouts in space-constrained automotive ECUs and telecom modules without sacrificing surge rating. |
| Glass-passivated junction | Ensures stable VBR tolerance and long-term reliability under repeated surge stress, critical for industrial field deployments. |
| 1500 W peak pulse power | Supports protection against high-energy transients like load dump (ISO 7637-2) and lightning-induced surges (IEC 61000-4-5). |
| MSL Level 1 rating | Allows direct placement on PCB without baking or special handling prior to reflow, reducing manufacturing overhead. |
| Halogen-free (M3) | Meets environmental compliance requirements for automotive and industrial OEMs requiring green material declarations. |
Applications
| Automotive Power Module Protection | Industrial Motor Drive DC Bus |
|---|---|
Use Scenario: Protecting gate drivers and MCU power rails in 12 V/24 V/48 V vehicle control units exposed to ISO 7637-2 load dump pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between 110 V auxiliary supply rail and chassis ground to clamp induced spikes within 1 ns. Use Value: Limits transient voltage to ≤177 V during 8.5 A surge, preventing latch-up or permanent damage to 200 V-rated MOSFETs and PMICs. | Use Scenario: Safeguarding feedback sensing lines and encoder interfaces in variable-frequency drives operating from rectified 110 V AC input. IC Role / Device Role / Timing Role: Bidirectional-capable variant not used; this unidirectional device guards positive rail only, with cathode tied to 110 V bus and anode grounded. Use Value: Maintains <1 µA leakage at 110 V, avoiding measurement error in precision current-sense amplifiers downstream. |
| Telecom Line Interface Protection | Renewable Energy Inverter Control Board |
Use Scenario: Shielding RS-485 transceivers and PoE-powered PHYs from induced surges on outdoor cable runs in base station backhaul links. IC Role / Device Role / Timing Role: Placed across differential pair or common-mode rail to absorb common-mode transients exceeding 110 V standoff. Use Value: Clamps 10/1000 µs surges to 177 V within nanoseconds, preserving signal integrity and preventing transceiver latch-up. | Use Scenario: Securing microcontroller reset lines and isolated gate driver supplies in solar string inverters subject to grid-switching transients. IC Role / Device Role / Timing Role: Mounted directly at MCU VDD input after DC/DC converter output to suppress secondary surges from transformer coupling. Use Value: Withstands 200 A non-repetitive forward surge (IFSM), surviving rare but catastrophic grid fault events without degradation. |
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-M3 | Lower PPPM (600 W), same VWM/VC, SMB (DO-214AA) package - 30% smaller footprint, higher RθJA (100 °C/W). | Suitable for lower-energy transients (e.g., ESD-only zones); insufficient for IEC 61000-4-5 Level 4 or load dump. | Select when board space is constrained and surge threat level is limited to ±8 kV contact ESD. |
| SMCJ110CA-M3/57T | Bidirectional version: identical VWM/VC/PPPM, but symmetric clamping in both polarities; no cathode band marking. | Required for AC-coupled or floating signal lines where polarity reversal occurs (e.g., Ethernet transformers, audio inputs). | Choose only if protecting bidirectional signals; unidirectional SMCJ110A-M3/57T offers better cost and layout simplicity for DC rails. |
Compared with SMBJ110A-M3, SMCJ110A-M3/57T delivers 2.5× higher surge energy handling and superior thermal performance on standard pads; versus SMCJ110CA-M3/57T, it provides optimized clamping for fixed-polarity DC systems with simpler layout and polarity verification.
Availability
SMCJ110A-M3/57T is available at Aetrix Electronics and suitable for automotive electronics, industrial motor controls, and telecom infrastructure requiring stable component supply with halogen-free compliance and AEC-Q101-qualified alternatives.
Supply support for SMCJ110A-M3/57T 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade qualification.
The SMCJ series was engineered specifically for high-energy transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where failure modes must be mitigated without compromising long-term stability.
FAQ
What is the clamping voltage of SMCJ110A-M3/57T at its rated peak pulse current?
The SMCJ110A-M3/57T has a maximum clamping voltage (VC) of 177 V at 8.5 A peak pulse current with a 10/1000 µs waveform. This value is measured under standardized test conditions per ANSI/IEEE C62.35 and represents the highest voltage the protected circuit will experience during that surge event. The SMCJ110A-M3/57T maintains this clamping performance across its specified operating temperature range.
Is SMCJ110A-M3/57T suitable for automotive applications requiring AEC-Q101 qualification?
No - the SMCJ110A-M3/57T is commercial-grade with halogen-free RoHS compliance (M3 suffix), but it is not AEC-Q101 qualified. For automotive use, select the HM3-suffixed variant (e.g., SMCJ110A-HM3/57T), which carries full AEC-Q101 qualification and is explicitly listed in Vishay's automotive ordering codes. The SMCJ110A-M3/57T remains appropriate for industrial and telecom applications where AEC-Q101 is not mandated.
How does the SMCJ110A-M3/57T differ from the bidirectional SMCJ110CA-M3/57T?
The SMCJ110A-M3/57T is unidirectional with cathode-band marking and conducts only in reverse bias, while the SMCJ110CA-M3/57T is bidirectional with symmetric breakdown in both directions and no polarity marking. Both share identical VWM (110 V), VC (177 V), and PPPM (1500 W), but the SMCJ110A-M3/57T is optimized for DC rail protection where polarity is fixed. The SMCJ110A-M3/57T simplifies layout verification and reduces risk of incorrect orientation during assembly.
What is the thermal resistance and maximum power dissipation of SMCJ110A-M3/57T?
The SMCJ110A-M3/57T has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W when mounted on 0.31" × 0.31" (8.0 mm × 8.0 mm) copper pads per terminal. Its steady-state power dissipation (PD) is rated at 6.5 W at TA = 50 °C, derating linearly above that ambient temperature. This thermal profile supports reliable operation in enclosed industrial enclosures up to +85 °C ambient when proper PCB copper area is allocated. The SMCJ110A-M3/57T must not exceed +150 °C junction temperature under any condition.
Can SMCJ110A-M3/57T be used in place of SMCJ100A-M3/57T for higher-voltage rail protection?
Yes - the SMCJ110A-M3/57T is intended for 110 V nominal systems, offering higher VWM (110 V vs. 100 V) and VBR (122–135 V vs. 111–123 V) than SMCJ100A-M3/57T, making it suitable for upgraded rail voltages. However, its clamping voltage (177 V) is also higher than SMCJ100A-M3/57T (162 V), so downstream components must tolerate the increased clamped level. The SMCJ110A-M3/57T retains identical package, thermal, and surge ratings - enabling drop-in replacement only if the protected circuit's voltage margin accommodates the higher VC.
SMCJ110A-M3/57T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AB, SMC
- 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):
- 8.5A
- Power - Peak Pulse:
- 1500W (1.5kW)
- 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-214AB (SMC)
SMCJ110A-M3/57T FAQ
1.How can I place an order for SMCJ110A-M3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110A-M3/57T 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 SMCJ110A-M3/57T reliable?
The price and inventory of SMCJ110A-M3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ110A-M3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ110A-M3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110A-M3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110A-M3/57T?
SMCJ110A-M3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110A-M3/57T 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 SMCJ110A-M3/57T?
For technical support, including SMCJ110A-M3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110A-M3/57T requirements.
6.How does Aetrix verify that SMCJ110A-M3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ110A-M3/57T 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 SMCJ110A-M3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ110A-M3/57T?
All SMCJ110A-M3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110A-M3/57T, 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 SMCJ110A-M3/57T part is unused and in its original packaging.
Return procedure for SMCJ110A-M3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110A-M3/57T Tags
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