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Product Detailed Parameters
- Description：MLC
- Series：EMI Filter
- Mfr：Knowles Syfer
- Package：Tape & Reel (TR)
- Voltage - Rated：50V
- 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：0.39 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 1812J0500394MJTE03 is a feed-through capacitor designed for surface-mount technology. It features a capacitance of 0.39 µF and a voltage rating of 50 VDC. The component operates within a temperature range of -55°C to +125°C. It utilizes a 1812 (4532 metric) package footprint with three PC pads. The device is rated for a current handling capacity of 50 mA, distinguishing it from standard multilayer ceramic capacitors.
Feature Summary
- Integrated feed-through architecture providing electromagnetic interference suppression
- Three-pad surface-mount configuration for direct PCB integration
- High current handling capability suitable for power line filtering applications
Applications
- Electromagnetic interference filtering in electronic circuits
- Power supply input/output decoupling
- Signal integrity protection in high-frequency systems
Procurement Notes
Verify the specific suffix TE03 against official manufacturer documentation to confirm pinout and termination specifications. Ensure design compatibility with the required 50 mA current rating and 50 VDC operating voltage. Confirm availability through authorized distributors as stock levels fluctuate.
Selection Notes
Select this component when integrated EMI filtering is required without additional discrete components. Compare performance against standard MLCCs if higher current handling or superior noise attenuation is necessary. Validate thermal management requirements against the specified operating temperature range.
Part Context
This part belongs to the Knowles Syfer feed-through capacitor series, distinct from their standard MLCC portfolio. It combines capacitance with conductive path functionality. The 1812 form factor allows for compact board layouts while maintaining robust electrical characteristics for demanding environments.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source data. Consult manufacturer catalogs for equivalent feed-through devices with matching voltage, capacitance, and current ratings.
