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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：0.027 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 1812Y1000273MJTE03 is a surface-mount multilayer ceramic capacitor (MLCC) from the FlexiCap series. It features a 0.027 µF capacitance with ±20% tolerance and a 100 VDC voltage rating. Utilizing X7R dielectric material, this Class 1 component operates within a temperature range of -55°C to +125°C. The device is housed in an 1812 (4532 metric) package with flexible nickel barrier end terminations designed to withstand board flexing. It carries AEC-Q200 qualification for automotive reliability and is supplied in reel packaging.
Feature Summary
- Flexible soft terminal construction mitigates stress during PCB bending
- AEC-Q200 qualified for automotive-grade reliability standards
- X7R dielectric provides stable capacitance across wide temperature ranges
Applications
- Automotive electronic circuits requiring board-flex resistance
- High-reliability surface mount assemblies
- General-purpose decoupling and filtering in flexible substrates
Procurement Notes
Verify the complete part number including the suffix MJTE03 against official manufacturer documentation to ensure correct termination and packaging specifications. Confirm that the specific reel quantity matches project requirements. Cross-reference the AEC-Q200 status and RoHS compliance directly with the latest datasheet before final procurement decisions.
Selection Notes
Select this component when board flex sensitivity is a primary concern due to its unique flexible electrode design. The X7R dielectric offers higher capacitance density than C0G types but with greater temperature dependence. Ensure the 100V rating exceeds the maximum circuit voltage and consider the 1812 footprint constraints during layout planning.
Part Context
This part belongs to the Knowles Syfer FlexiCap family, specifically engineered for applications where mechanical stress from substrate flexing could damage standard rigid terminations. The 1812Y prefix indicates the X7R dielectric variant within the 1812 case size lineup, distinguishing it from the J-series C0G components.
Replacement Considerations
Direct substitutes include other FlexiCap parts with identical voltage and capacitance ratings, such as 1812Y1000273MCT or variants with different tolerance codes like K or J, provided the termination flexibility remains compatible.
