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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：0.4 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 1812J0500404MJTE03 is a surface-mount feed-through capacitor with a capacitance of 0.4 µF and a voltage rating of 50 VDC. It utilizes X7R dielectric material and operates within a temperature range of -55°C to +125°C. The component features a 1812 (4532 metric) package size, ±20% tolerance, and a maximum current rating of 50 mA. Designed for high-reliability applications, it supports board flex sensitivity and meets AEC-Q200 automotive standards.
Feature Summary
- Integrated feed-through architecture providing internal filtering capabilities
- AEC-Q200 qualified for automotive reliability requirements
- Designed for board flex sensitive environments
Applications
- Automotive electronics requiring high reliability
- Board flex sensitive circuit designs
- High-frequency signal filtering in compact spaces
Procurement Notes
Verify the specific suffix configuration against official datasheets to ensure correct electrical characteristics and termination materials. Confirm that the 50 mA current rating aligns with application requirements. Check for RoHS compliance status and moisture sensitivity level before procurement. Ensure compatibility with standard SMT reflow processes.
Selection Notes
Select this component when integrated feed-through functionality is required in an 1812 footprint. Consider the 50 mA current limit and 50 VDC rating during design. Evaluate thermal performance within the specified operating range. Compare against standard MLCCs if external filtering components are permissible.
Part Context
This part belongs to the Knowles Syfer FlexiCap series, designed for robust performance in demanding environments. The 1812J prefix indicates a general type MLCC with specific voltage and capacitance ratings. The E03 suffix typically denotes specific packaging or terminal configurations defined by the manufacturer.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications carefully when considering alternative feed-through capacitors from other manufacturers.
