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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：0.022 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 1812Y1000223MJTE03 is a surface-mount feed-through ceramic capacitor in the FlexiCap series. It features a capacitance of 0.022 µF with a voltage rating of 100 VDC and X7R dielectric. The component operates within a temperature range of -55°C to +125°C and has a tolerance of ±20%. Designed for high-reliability applications, it includes an integrated 50 mA fuse function for circuit protection. The unit utilizes a 1812 (4532 metric) package size with flexible terminals to enhance board flex sensitivity.
Feature Summary
- Integrated 50 mA fuse function for overcurrent protection
- Flexible terminal design for board flex sensitivity
- X7R dielectric material for stable performance
- AEC-Q200 qualified for automotive reliability
Applications
- Automotive electronics requiring board flex resistance
- Circuits needing integrated overcurrent protection
- High-reliability surface mount assemblies
Procurement Notes
Verify the specific suffix 'E03' confirms the feed-through configuration and 50 mA fuse rating, as standard MLCCs lack this feature. Confirm RoHS3 compliance and AEC-Q200 status against the official datasheet. Ensure the 1812 footprint matches the PCB layout requirements for this specific component type.
Selection Notes
Select this part when both decoupling and inline fuse functionality are required in a single SMD package. The flexible terminals make it suitable for substrates prone to mechanical stress. Verify that the 50 mA current limit aligns with the protected circuit's operational requirements before implementation.
Part Context
This component belongs to the Knowles Syfer FlexiCap series, which specializes in multilayer ceramic capacitors with flexible terminations. The series targets automotive and industrial sectors where mechanical robustness and high reliability are critical. The 1812Y prefix indicates the specific family within their high-voltage and specialized capacitor portfolio.
Replacement Considerations
Direct substitutes must match the 100V rating, 0.022µF capacitance, and specifically include the 50 mA fuse function. Standard MLCCs cannot replace this part due to the missing protective feature. Verify pinout compatibility and thermal characteristics for any potential alternatives.
