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Littelfuse Uni-Directional TVS Diode 1 kW Peak Pulse Power, 2-Pin SOD-123 SMF250A
Specifications
| Country of Origin | China |
|---|---|
| Brand | Littelfuse |
| Height | 1.1mm |
| Length | 3.9mm |
| Model | SMF250A |
| Width | 2mm |
| Mount Type | Surface |
| Series | SMF |
| Maximum Operating Temperature | 150°C |
| Package Type | SOD-123 |
| Minimum Operating Temperature | -65°C |
| Pin Count | 2 |
| Number of Elements per Chip | 1 |
| Clamping Voltage VC | 405V |
| Diode Configuration | Single |
| Direction Type | Uni-Directional |
| Minimum Breakdown Voltage Vbr | 279V |
| Maximum Reverse Stand-off Voltage Vwm | 250V |
| Peak Pulse Power Dissipation Pppm | 1kW |
| Test Current It | 1mA |
| Maximum Peak Pulse Current Ippm | 0.5A |
| Maximum Reverse Leakage Current | 1μA |
Key Features
- Designed for protection of sensitive electronic circuits from voltage transients induced by lightning and switching.
- Single element diode offering uni-directional transient voltage suppression.
- Compact SOD-123 surface mount package with low profile height of 1.1 mm.
- Clamping voltage of 405 V and maximum reverse stand-off voltage of 250 V ensures robust surge protection.
- Operates reliably from -65°C up to 150°C ambient temperature.
- Offers electrostatic discharge (ESD) protection rated at IEC-61000-4-2 30 kV for air and contact discharge.
- RoHS compliant and recognized under UL 497B for isolated loop circuit protection.
Product Description
Littelfuse SMF250A is a high-reliability Uni-Directional TVS Diode rated for peak pulse power dissipation of 1 kW in a compact 2-pin SOD-123 surface mount package. It is specifically designed to protect sensitive electronic equipment against voltage transients caused by lightning strikes and switching events. The device utilizes a single element diode configuration providing effective surge suppression in a minimal footprint with a height of 1.1 mm.
The SMF250A has a minimum breakdown voltage of 279 V and a maximum reverse stand-off voltage of 250 V, with a clamping voltage of 405 V to protect circuits from voltage spikes. It supports an operating temperature range from -65°C to 150°C, allowing use in harsh industrial and electronic applications. This diode features robust ESD protection conforming to IEC 61000-4-2 standards for both air and contact discharge at 30 kV. The product is UL 497B recognized as an isolated loop circuit protector.
Its small SOD-123 package aids in efficient PCB layout and reduced board space requirements. The device supports a maximum peak pulse current of 0.5 A and maximum reverse leakage current of 1 μA, making it suitable for use in telecommunications, industrial controls, and other electronic systems requiring transient voltage suppression.
Applications include protection in surge suppressors, data lines, power lines, and sensitive electronic modules in industrial, communication, and commercial electronics fields. The Littelfuse SMF series is noted for its small size and low profile, delivering reliable surge protection and long-term performance reliability.
Designed for robust voltage transient protection in sensitive electronics circuits. Compact and low profile SOD-123 surface mount package optimizes PCB space. Wide operating temperature range supports harsh environmental use cases.
High peak pulse power rating of 1 kW ensures effective transient suppression. ESD protection to IEC standards safeguards against electrostatic damage. Recognized UL 497B isolated loop circuit protector for enhanced reliability.
Ideal for use in industrial, telecommunications, and commercial electronic systems. Explore the complete range of Littelfuse TVS Diodes and other semiconductor components on EnvMart for reliable electronic protection solutions.
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Frequently Asked Questions
The SMF250A has a peak pulse power dissipation rating of 1 kW.
The clamping voltage of this model is 405 V.
The maximum reverse stand-off voltage is 250 V.
It operates reliably within a temperature range of -65°C to 150°C.
This model comes in a compact SOD-123 surface mount package.
The SMF250A has a 2-pin configuration.
The maximum peak pulse current for this diode is 0.5 A.
The minimum breakdown voltage is 279 V.
It provides electrostatic discharge (ESD) protection rated at IEC-61000-4-2 30 kV for both air and contact discharge.
This diode is suitable for protecting surge suppressors, data lines, power lines, and sensitive electronic modules in various electronic systems.
Yes, the SMF250A is RoHS compliant and recognized under UL 497B for isolated loop circuit protection.
The maximum reverse leakage current is 1 μA.
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