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SK055NRP
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Product Detailed Parameters
- Description：SCR 1KV 55A TO263
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Off State：1 kV
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：40 mA
- Current - Hold (Ih) (Max)：60 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：550A, 650A
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Supplier Device Package：TO-263 (D2PAK)
- Voltage - On State (Vtm) (Max)：1.8 V
- Current - On State (It (AV)) (Max)：35 A
- Current - On State (It (RMS)) (Max)：55 A
- Current - Off State (Max)：30 µA
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Overview
The Littelfuse SK055NRP is a silicon-controlled rectifier (SCR) from the Sxx55x series, designed for high-power switching applications. It features a rated repetitive off-state voltage of 1 kV and an on-state RMS current of 55 A. The device operates within a temperature range of -40°C to +125°C and utilizes a sensitive gate with a maximum trigger current of 40 mA. Packaged in an SMTO-263-2 surface-mount configuration, it offers a forward voltage of 1.8 V and a non-repetitive peak surge current capability of 650 A.
Feature Summary
- Sensitive gate design allows direct interfacing with microprocessors using minimal gate current.
- Glass passivated junction ensures durability against environmental stressors.
- Surface mount package optimized for automated assembly and board space efficiency.
Applications
- Strobe light control circuits
- Fluid level sensors
- Capacitive-discharge ignition systems
Procurement Notes
Verify the specific suffix NRP against official Littelfuse documentation to confirm surface-mount compatibility and pinout configuration. Ensure the procurement source provides valid RoHS compliance certificates. Cross-reference the part number with the manufacturer's latest datasheet to confirm availability and manufacturing status before finalizing orders.
Selection Notes
Select this component for applications requiring high voltage blocking and moderate continuous current handling in a compact form factor. Verify that the gate drive circuit can supply the required 40 mA trigger current. Ensure the thermal management design accommodates the 125°C maximum operating temperature and the specific power dissipation characteristics of the SMTO-263-2 package.
Part Context
This SCR belongs to the Teccor Sxx55x family, which provides robust switching solutions for industrial and consumer electronics. The SK055NRP variant specifically adapts the standard 55A/1kV performance profile into a surface-mount format, facilitating integration into modern printed circuit boards where through-hole mounting is impractical or undesirable.
Replacement Considerations
Direct replacements must match the 55A RMS current, 1kV voltage rating, and SMTO-263-2 package. Verify equivalent gate trigger characteristics and thermal resistance values. Consult Littelfuse substitution guides for confirmed compatible alternatives within the same product line.
