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Littelfuse SMCJ440A Transient Voltage Suppressor

The SMCJ series surface-mount Transient Voltage Suppression diode protects sensitive electronics from lightning-induced voltage spikes and transient events. Capable of handling 1500W peak pulse power at 10/1000 μs, it features low incremental surge resistance, fast response time under 1 ps, and conforms to IEC standards for ESD and EFT protection. Its design includes a glass-passivated junction, built-in strain relief, and low inductance. Suitable for VCC, I/O, and vulnerable circuits, it operates from -65°C to 150°C, ideal for circuit compactness and reliable transient suppression.

Authorized Distributors
Source:DigiKey
Part No:SMCJ440A
Stock:21533
Inv Date:05-28-2026
Price: Unit price: $1.38
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Source:DigiKey
Part No:SMCJ440A
Stock:2145
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Price: Unit price: $0.91
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Source:DigiKey
Part No:SMCJ440A
Stock:3811
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Price: Unit price: $0.30001
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Part No:SMCJ440A
Stock:545
Inv Date:05-29-2026
Price: Unit price: $1.17
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Part No:SMCJ440A
Stock:4375
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Price: Unit price: $1.11
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Stock:2716
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Price: Unit price: $1.23
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Part No:SMCJ440A
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Part No:SMCJ440A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.64
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Part No:SMCJ440A
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Price: Unit price: $0.52
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Authorized Distributors
Part No:SMCJ440A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.765
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Part No:SMCJ440A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.3438
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Part No:SMCJ440A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.765
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Part No:SMCJ440A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.3438
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Part No:SMCJ440A
Stock:0
Inv Date:05-28-2026
Price: Unit price: $0.36
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Part No:SMCJ440A
Stock:7216
Inv Date:05-29-2026
Price: N/A
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Source:Arrow EU
Part No:SMCJ440A
Stock:3000
Inv Date:05-29-2026
Price: N/A
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Littelfuse SMCJ440A Transient Voltage Suppressor Specifications:

  • Peak Pulse Power Dissipation: 1500W at 10/1000μs waveform
  • Stand-off Voltage: Vv, specified per model
  • Breakdown Voltage: V, maximum specified at test current
  • Clamping Voltage: Peak voltage at specified peak impulse current
  • Reverse Leakage Current: Very low, typically less than 1pA for Vv > 12V
  • Forward Voltage Drop: 3.5/5.0V for unidirectional types
  • Operating Temperature Range: -65°C to 150°C
  • Storage Temperature Range: -65°C to 175°C
  • Thermal Resistance Junction-to-Ambient: 7°C/W
  • Physical Case: Molded plastic over glass passivated junction, DO-214AB package
  • Lead Material: Matte tin-plated, RoHS, halogen free
  • ESD Protection: IEC 61000-4-2, contact 30kV, air 30kV
  • EFT Protection: IEC 61000-4-4
  • Reflow Soldering Temperature: 260°C for 40 sec
  • Package includes built-in strain relief for durability
  • Weight: 0.007 ounces, 0.21 grams

Buy the Littelfuse Series SMCJ 440A Transient Voltage Suppression Diode: SMCJ440A

Protect your electronic circuits with the Littelfuse Series SMCJ440A transient voltage suppression diode. Offering 1500W peak pulse power at 10/1000 μs, it ensures safe operation against lightning and transient voltage surges. Its fast response time of less than 1 ps and low inductance provide excellent clamping ability, safeguarding VCC, I/O, and other vulnerable circuits. Designed for surface-mount applications, it features a glass-passivated junction, RoHS compliance, and built-in strain relief, making it ideal for compact, high-performance electronic devices.

Order your Littelfuse Series SMCJ440A transient voltage suppression diode today and protect your sensitive electronics from high-voltage transients with reliable surge suppression.

Frequently Asked Questions

Where can I buy Littelfuse SMCJ440A?

You can click on the BUY or RFQ button to purchase SMCJ440A from an authorized Littelfuse distributor.

How do I troubleshoot issues or seek technical support for part SMCJ440A?

You can download the SMCJ440A datasheet or visit the Littelfuse website for support.

Who is the manufacturer of SMCJ440A?

Littelfuse

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