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Vishay General Semiconductor - Diodes Division SMCJ110A-E3/57T
- Part No.:
- SMCJ110A-E3/57T
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110A-E3/57T.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,012
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Product details
Overview
SMCJ110A-E3/57T from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMC (DO-214AB) package, designed to protect sensitive electronics against high-energy transients. It features a 110 V stand-off voltage (VWM), 177 V maximum clamping voltage (VC) at 8.5 A peak pulse current (IPPM), and 1500 W peak pulse power (PPPM) with 10/1000 µs waveform - used for surge protection on DC power rails and signal lines in industrial and automotive systems.
For engineers reviewing the SMCJ110A-E3/57T datasheet, SMCJ110A-E3/57T pinout, SMCJ110A-E3/57T application, or SMCJ110A-E3/57T equivalent, key selection criteria include clamping performance under 10/1000 µs surge, unidirectional polarity marking, RoHS-compliant matte tin plating, and compatibility with automated SMT placement on 8.0 mm × 8.0 mm copper pads.
Technical Context
The SMCJ110A-E3/57T operates as a silicon avalanche diode with glass-passivated junction, delivering fast response time (<1 ns) and low incremental surge resistance to limit transient overvoltage before damage occurs. Its breakdown voltage range is 122 V to 135 V at 1 mA test current, with temperature coefficient of VBR at +0.107 %/°C.
Designed for unidirectional operation, it uses cathode-band polarity identification and meets MSL level 1 per J-STD-020 with 260 °C lead-free reflow peak. Thermal resistance is 75 °C/W junction-to-ambient (RθJA) and 15 °C/W junction-to-lead (RθJL), supporting reliable operation up to TJ = +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 122 V / 135 V at IT = 1 mA - ensures predictable avalanche turn-on threshold |
| VC @ IPPM | 177 V at 8.5 A - limits transient voltage seen by downstream circuitry during 10/1000 µs surge |
| PPPM | 1500 W - peak power handling capability under standardized lightning-surge waveform |
| ID @ VWM | 1.0 µA - ultra-low leakage preserves system efficiency in standby or low-power modes |
| Package | SMC (DO-214AB) - industry-standard surface-mount outline with 8.0 mm × 8.0 mm thermal pad footprint |
| TJ max | +150 °C - enables use in under-hood automotive and high-temperature industrial environments |
Pinout & Package
SMCJ110A-E3/57T is housed in an SMC (DO-214AB) package with two terminals: anode and cathode. The cathode is marked by a band on the body. Leads are matte tin plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when V > VBR |
| Anode | Reference/ground return | Typically tied to system ground plane; completes clamping path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| 1500 W peak pulse power | Withstands IEC 61000-4-5 Level 4 surges (4 kV/2 Ω) on 12–48 V DC rails without degradation |
| Low clamping ratio (VC/VWM = 1.61) | Minimizes voltage overshoot across protected ICs, reducing risk of latch-up or gate oxide stress |
| MSL Level 1 rating | Enables direct placement into lead-free reflow without baking or special handling |
| AEC-Q101 qualified variant available | HE3 suffix version supports automotive-grade reliability requirements including HTOL and temperature cycling |
| Glass passivated junction | Ensures stable VBR over lifetime and immunity to humidity-induced parameter drift |
Applications
| Industrial Motor Drive Control | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Protection of 24 V DC input stage against load dump and inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Unidirectional TVS placed between supply rail and chassis ground to clamp transients before reaching PMIC and MCU. Use Value: Limits clamped voltage to ≤177 V, preventing overvoltage stress on 36 V-rated input capacitors and LDO regulators. | Use Scenario: Surge suppression on LIN bus power line exposed to battery transients during jump-start or alternator load dump. IC Role / Device Role / Timing Role: Standoff device absorbing energy from 10/1000 µs pulses while maintaining <1 µA leakage at 12 V nominal. Use Value: Enables compliance with ISO 7637-2 Pulse 1 and Pulse 4a test profiles without derating or parallel staging. |
| Telecom Power Supply Input | Renewable Energy Inverter DC Link |
Use Scenario: Secondary-side protection on 48 V telecom rectifier output feeding PoE PSE controllers. IC Role / Device Role / Timing Role: Fast-acting shunt element that activates within nanoseconds to divert surge current away from Ethernet PHY and controller ICs. Use Value: Clamps 1500 W surges to 177 V, preserving integrity of 60 V-rated MOSFETs and gate drivers downstream. | Use Scenario: Overvoltage protection on photovoltaic string combiner box DC input rated up to 1000 V. IC Role / Device Role / Timing Role: Front-end transient suppressor placed ahead of MPPT controller to absorb lightning-induced surges on long cable runs. Use Value: Withstands repeated 10/1000 µs events up to 8.5 A peak, extending service life versus Zener-based alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ110A-E3/61 | Lower PPPM (400 W), smaller SMA package (DO-214AC), higher VC (187 V at 3.9 A) | Not suitable for 1500 W surge environments; limited to low-energy signal-line protection | Select only if space-constrained layout and lower surge threat level apply |
| SMCJ110CA-E3/57T | Bidirectional variant; same VWM (110 V), symmetric clamping in both polarities; identical PPPM and package | Required where AC-coupled or dual-polarity transients (e.g., RS-485, CAN FD) must be suppressed | Choose when protecting bidirectional data lines or floating supplies without defined polarity |
Compared with SMAJ110A-E3/61 and SMCJ110CA-E3/57T, the SMCJ110A-E3/57T delivers optimal balance of high-energy handling, unidirectional precision, and thermal robustness for DC power rail protection - making it preferred for industrial and automotive primary-side surge mitigation where polarity is fixed and energy levels exceed 1 kW.
Availability
SMCJ110A-E3/57T is available at Aetrix Electronics and suitable for industrial motor drives, automotive body control modules, and telecom power supply inputs requiring stable component supply and full traceability.
Supply support for SMCJ110A-E3/57T 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, rectifiers, MOSFETs, and protection devices with emphasis on reliability, power efficiency, and AEC-Q qualification.
The SMCJ series was developed specifically for high-power transient suppression in harsh environments - targeting automotive, industrial automation, and renewable energy systems where robustness against repetitive surge events is critical.
FAQ
What is the clamping voltage of SMCJ110A-E3/57T at its rated peak pulse current?
The SMCJ110A-E3/57T has a maximum clamping voltage (VC) of 177 V at 8.5 A peak pulse current (IPPM) under the standard 10/1000 µs waveform. This value is measured with the device mounted on 8.0 mm × 8.0 mm copper pads per JEDEC guidelines and defines the upper voltage limit imposed on protected circuitry during surge events. The SMCJ110A-E3/57T maintains this clamping performance across its specified operating temperature range.
Is SMCJ110A-E3/57T RoHS-compliant and lead-free assembly compatible?
Yes, SMCJ110A-E3/57T carries the "E3" suffix indicating full RoHS compliance and qualification for lead-free reflow soldering. Its matte tin-plated leads meet J-STD-002 and JESD 22-B102 solderability standards, and the device is rated MSL Level 1 per J-STD-020 with a maximum peak reflow temperature of 260 °C. No pre-baking is required prior to SMT placement. The SMCJ110A-E3/57T is manufactured using halogen-free molding compound.
How does the breakdown voltage tolerance of SMCJ110A-E3/57T affect circuit design?
The SMCJ110A-E3/57T has a specified breakdown voltage range of 122 V to 135 V at 1 mA test current, representing ±5.5% tolerance around the nominal 128.5 V midpoint. This tolerance must be accounted for when selecting the margin between VBR and the maximum expected operating voltage - for example, ensuring VWM (110 V) remains ≥10–15% below minimum VBR to avoid premature conduction. The SMCJ110A-E3/57T's +0.107 %/°C temperature coefficient further requires derating at elevated ambient temperatures.
Can SMCJ110A-E3/57T be used in bidirectional signal line protection?
No, SMCJ110A-E3/57T is a unidirectional TVS diode and must not be used on bidirectional signal lines such as RS-485, CAN, or USB without external polarity management. For such applications, the bidirectional variant SMCJ110CA-E3/57T is specified - it provides symmetrical clamping in both directions with identical VWM and PPPM ratings. Using SMCJ110A-E3/57T on AC-coupled or floating lines risks forward conduction during negative transients and potential device failure. Always verify polarity alignment before deploying the SMCJ110A-E3/57T.
What thermal considerations apply when mounting SMCJ110A-E3/57T on PCB?
SMCJ110A-E3/57T has a junction-to-ambient thermal resistance (RθJA) of 75 °C/W and junction-to-lead (RθJL) of 15 °C/W. To maintain TJ ≤ +150 °C under full 1500 W surge conditions, PCB layout must provide minimum 8.0 mm × 8.0 mm copper pads per terminal as specified in the Vishay datasheet. Additional thermal vias and internal ground planes improve heat dissipation. Derating curves in Figure 2 show that at TA = 75 °C, the device supports only ~70% of its rated PPPM. Proper thermal design ensures long-term reliability of the SMCJ110A-E3/57T in continuous-duty applications.
SMCJ110A-E3/57T 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 (SMCJ)
SMCJ110A-E3/57T FAQ
1.How can I place an order for SMCJ110A-E3/57T through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110A-E3/57T 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-E3/57T reliable?
The price and inventory of SMCJ110A-E3/57T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ110A-E3/57T is usually 5 days.
3.What payment methods are accepted for SMCJ110A-E3/57T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110A-E3/57T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110A-E3/57T?
SMCJ110A-E3/57T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110A-E3/57T 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-E3/57T?
For technical support, including SMCJ110A-E3/57T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110A-E3/57T requirements.
6.How does Aetrix verify that SMCJ110A-E3/57T is sourced from the original manufacturer or authorized distributors?
All SMCJ110A-E3/57T 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-E3/57T meets industry standards.
7.What is the process for return or replacement of SMCJ110A-E3/57T?
All SMCJ110A-E3/57T units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110A-E3/57T, 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-E3/57T part is unused and in its original packaging.
Return procedure for SMCJ110A-E3/57T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110A-E3/57T Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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