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Vishay General Semiconductor - Diodes Division SMCJ110A-M3/9AT
- Part No.:
- SMCJ110A-M3/9AT
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ110A-M3/9AT.pdf
- Description:
- TVS DIODE 110VWM 177VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,902
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Product details
Overview
SMCJ110A-M3/9AT 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 voltage transients induced by inductive load switching and lightning surges. It features 110 V standoff voltage (VWM), 177 V clamping voltage (VC) at 8.5 A peak pulse current (IPPM), and 1500 W peak pulse power (10/1000 µs waveform).
For engineers reviewing the SMCJ110A-M3/9AT datasheet, SMCJ110A-M3/9AT pinout, SMCJ110A-M3/9AT application, or SMCJ110A-M3/9AT equivalent, key selection criteria include unidirectional polarity, 122–135 V breakdown range (VBR), 1.0 µA max reverse leakage at VWM, -55 °C to +150 °C operating junction temperature, and halogen-free RoHS-compliant M3 suffix construction.
Technical Context
This TVS diode operates as a clamping device that remains high-impedance below its 110 V standoff voltage and rapidly transitions to low-impedance conduction above its 122–135 V breakdown threshold. Its glass-passivated junction ensures stable avalanche characteristics and fast response time (<1 ns) to transient events.
Designed for PCB-level surge protection, it delivers 1500 W peak pulse power handling with 0.057 %/°C temperature coefficient of VBR, enabling predictable performance across industrial temperature ranges. The SMC (DO-214AB) package supports automated placement and meets J-STD-020 MSL level 1 with 260 °C reflow peak.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 110 V - Maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 122 V / 135 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold |
| VC @ IPPM | 177 V - Clamped voltage seen by protected circuit during 8.5 A 10/1000 µs surge |
| IPPM | 8.5 A - Peak surge current capability under standardized 10/1000 µs waveform |
| PPPM | 1500 W - Maximum transient power dissipation without failure |
| TJ max | +150 °C - Maximum junction temperature; enables operation in harsh thermal environments |
| Leakage @ VWM | 1.0 µA - Low standby current minimizes system power loss and avoids false triggering |
Pinout & Package
Package: SMC (DO-214AB), surface-mount, matte tin-plated leads, 0.305" × 0.220" footprint, polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-side connection point | Connected to protected line; clamps positive transients to ground when used in unidirectional configuration |
| Anode (non-banded end) | Cathode-side connection point | Typically tied to ground or lower-potential rail; completes clamping path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Halogen-free, RoHS-compliant construction | M3 suffix confirms compliance with environmental regulations and eliminates halogen-based flame retardants |
| Low incremental surge resistance | Enables tighter clamping (177 V at 8.5 A) and reduced let-through energy to downstream ICs |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow without baking-reduces manufacturing overhead |
| Glass passivated chip junction | Ensures stable, repeatable avalanche behavior and long-term reliability under repeated surge stress |
| 1500 W peak pulse power rating | Provides robust protection against IEC 61000-4-5 Level 4 (4 kV/2 Ω) surges on power and signal lines |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed ECUs from load dump and alternator transients up to ±100 V. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power rail and chassis ground to clamp positive surges only. Use Value: Withstands 1500 W pulses and clamps to 177 V, preventing damage to 36 V-rated DC-DC converters and microcontrollers. | Use Scenario: Shielding analog sensor outputs (e.g., pressure, temperature) from ESD and cable discharge events. IC Role / Device Role / Timing Role: TVS mounted at connector entry point to shunt transients before reaching precision op-amps or ADC inputs. Use Value: 1.0 µA leakage at 110 V ensures no signal offset or gain error; fast <1 ns response prevents latch-up in front-end circuitry. |
| Telecom DC Power Input Protection | Consumer Appliance Motor Drive Protection |
Use Scenario: Safeguarding PoE-powered devices (e.g., IP cameras) against surges entering via 48 V DC input lines. IC Role / Device Role / Timing Role: Unidirectional SMCJ110A-M3/9AT deployed upstream of DC-DC converter to limit input rail overshoot. Use Value: 110 V VWM aligns with 48 V nominal + 100 % tolerance (up to ~96 V), leaving margin before clamping initiates. | Use Scenario: Suppressing inductive kickback from brushed DC motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: TVS connected across motor terminals to absorb flyback energy during MOSFET turn-off. Use Value: 1500 W rating handles repetitive 100–500 mJ spikes; SMC package withstands mechanical vibration and thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ110A-M3/57T | Lower 600 W PPPM; SMB (DO-214AA) package; same VWM/VC but reduced surge capacity | Suitable for lower-energy transients (e.g., IEC 61000-4-2 ESD only); not rated for IEC 61000-4-5 Level 4 | Select when board space is constrained and surge threat level is moderate |
| SMCJ110CA-M3/9AT | Bidirectional version; identical VWM, VC, and PPPM, but symmetric clamping in both polarities | Required for AC-coupled or floating signal lines where negative transients must also be suppressed | Choose when protecting differential pairs, RS-485 buses, or transformer-isolated interfaces |
Compared with SMBJ110A-M3/57T, SMCJ110A-M3/9AT provides 2.5× higher surge power handling in the same mounting footprint; versus SMCJ110CA-M3/9AT, it offers optimized cost and efficiency for DC-biased rails where only positive transients occur.
Availability
SMCJ110A-M3/9AT is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, telecom power supplies, and consumer appliance motor controls requiring stable component supply and halogen-free compliance.
Supply support for SMCJ110A-M3/9AT 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 and application-specific optimization.
The SMCJ series is engineered for high-energy transient suppression in demanding environments-including automotive, industrial, and telecom-where consistent clamping performance and AEC-Q101 readiness (via HE3/HM3 variants) are critical.
FAQ
What is the breakdown voltage range of the SMCJ110A-M3/9AT?
The SMCJ110A-M3/9AT has a guaranteed breakdown voltage (VBR) range of 122 V to 135 V at 1 mA test current, measured per ANSI/IEEE C62.35. This range ensures reliable turn-on behavior across manufacturing lots and temperature extremes, and directly supports its 110 V standoff rating with sufficient margin to avoid false triggering during normal operation.
Is the SMCJ110A-M3/9AT suitable for automotive applications?
Yes-the SMCJ110A-M3/9AT is halogen-free and RoHS-compliant (M3 suffix), and belongs to the AEC-Q101-qualified SMCJ family. While the base M3 variant is commercial-grade, Vishay offers AEC-Q101 versions under HM3 suffixes (e.g., SMCJ110A-HM3/9AT). For non-safety-critical automotive subsystems like body control modules or infotainment power rails, the SMCJ110A-M3/9AT is widely deployed with proven field reliability.
How does the clamping voltage of SMCJ110A-M3/9AT compare to its standoff voltage?
The SMCJ110A-M3/9AT has a 110 V standoff voltage (VWM) and clamps to 177 V at its rated 8.5 A peak pulse current (IPPM). This 67 V differential represents the protective "let-through" voltage seen by downstream components during surge events. The ratio VC/VWM = 1.61 reflects optimized silicon design for low incremental resistance, minimizing stress on protected ICs such as CAN transceivers or MCU power inputs.
What is the thermal resistance of the SMCJ110A-M3/9AT, and how does it affect power derating?
The SMCJ110A-M3/9AT has a typical junction-to-ambient thermal resistance (RθJA) of 75 °C/W on standard 0.31" × 0.31" copper pads. At ambient temperatures above 25 °C, its 6.5 W steady-state power dissipation must be linearly derated-e.g., at 75 °C ambient, maximum continuous power drops to ~3.25 W. This derating curve is defined in Figure 2 of the Vishay datasheet 88394 and is essential for thermal design in enclosed or high-temperature enclosures.
Can SMCJ110A-M3/9AT be used in bidirectional signal protection?
No-SMCJ110A-M3/9AT is strictly unidirectional, with polarity marked by a cathode band. For bidirectional protection (e.g., RS-485, USB, or AC-coupled lines), the functionally matched SMCJ110CA-M3/9AT must be used. That variant provides symmetrical clamping in both directions with identical VWM, VC, and PPPM ratings, but lacks polarity marking and uses a different device marking code (GHE vs. GHE for unidirectional).
SMCJ110A-M3/9AT 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-M3/9AT FAQ
1.How can I place an order for SMCJ110A-M3/9AT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ110A-M3/9AT 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-M3/9AT reliable?
The price and inventory of SMCJ110A-M3/9AT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ110A-M3/9AT is usually 5 days.
3.What payment methods are accepted for SMCJ110A-M3/9AT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ110A-M3/9AT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ110A-M3/9AT?
SMCJ110A-M3/9AT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ110A-M3/9AT 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-M3/9AT?
For technical support, including SMCJ110A-M3/9AT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ110A-M3/9AT requirements.
6.How does Aetrix verify that SMCJ110A-M3/9AT is sourced from the original manufacturer or authorized distributors?
All SMCJ110A-M3/9AT 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-M3/9AT meets industry standards.
7.What is the process for return or replacement of SMCJ110A-M3/9AT?
All SMCJ110A-M3/9AT units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ110A-M3/9AT, 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-M3/9AT part is unused and in its original packaging.
Return procedure for SMCJ110A-M3/9AT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMCJ110A-M3/9AT Tags
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