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Product Detailed Parameters
- Description：MLC
- Series：EMI Filter
- Mfr：Knowles Syfer
- Package：Tape & Reel (TR)
- Voltage - Rated：100V
- Current：50 mA
- Operating Temperature：-55°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：1812 (4532 Metric), 3 PC Pad
- Size / Dimension：0.177" L x 0.126" W (4.50mm x 3.20mm)
- Capacitance：0.27 µF
- Tolerance：±20%
- DC Resistance (DCR) (Max)：-
- Insertion Loss：-
- Temperature Coefficient：X7R
- Ratings：-
- Height (Max)：0.030" (0.75mm)
- Thread Size：-
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Overview
The Knowles Syfer 1812Y1000274MJTE03 is a feed-through ceramic capacitor with a capacitance of 0.27 µF and a rated voltage of 100V. It utilizes X7R dielectric material and features a 1812 (4532 metric) surface-mount package. The component is designed for high-current applications, supporting up to 50 mA of continuous current. It operates within a temperature range of -55°C to +125°C and offers ±20% tolerance.
Feature Summary
- Integrated feed-through architecture combining filtering and power handling in a single surface-mount device
- High continuous current capability of 50 mA suitable for power line filtering applications
- X7R dielectric provides stable capacitance characteristics across the specified operating temperature range
Applications
- Power supply input filtering
- DC-DC converter output stages
- High-current signal line decoupling
Procurement Notes
Verify the specific suffix 'E03' against official datasheets to confirm pin configuration and termination specifications. Ensure design compatibility with the 50 mA current rating and 100V DC working voltage. Confirm RoHS compliance status through manufacturer documentation prior to integration.
Selection Notes
Select this component when board space constraints require a combined filter and power path solution. The 1812 package allows for higher current handling compared to smaller footprints. Verify that the X7R temperature coefficient meets the thermal stability requirements of the target circuit environment.
Part Context
This part belongs to the Knowles Syfer FlexiCap series, which specializes in flexible termination MLCCs. The 1812Y prefix indicates the 1812 case size and Y-series characteristics. As a feed-through type, it differs from standard parallel plate capacitors by integrating a conductive center terminal for direct current passage.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source data. Consult manufacturer catalogs for equivalent feed-through capacitors with matching 50 mA ratings and 1812 dimensions.
