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Product Detailed Parameters
- Description：MLC
- Series：EMI Filter
- Mfr：Knowles Syfer
- Package：Tape & Reel (TR)
- Voltage - Rated：500V
- 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：0.012 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 1812Y5000123MSTE03 is a feed-through multilayer ceramic capacitor (MLCC) designed for surface mount technology. It features a capacitance of 0.012 µF with a DC voltage rating of 500 VDC and an X7R dielectric material. The component operates within a temperature range of -55°C to +125°C and utilizes a flexible terminal structure. Packaged in an 1812 (4532 metric) case, it integrates X2Y architecture for enhanced electromagnetic interference suppression.
Feature Summary
- Integrates X2Y capacitor architecture for simultaneous common-mode and differential-mode noise suppression
- Features flexible soft terminals to reduce mechanical stress on board-flex sensitive substrates
- Provides high current handling capability suitable for power line filtering applications
Applications
- Automotive electronics requiring AEC-Q200 qualification
- Power supply input/output filtering stages
- Electromagnetic interference suppression in high-voltage circuits
Procurement Notes
Verify the specific suffix MSTE03 to confirm the inclusion of X2Y architecture and flexible terminal characteristics. Ensure compatibility with the required 500V DC rating and 0.012 µF capacitance value. Confirm that the 1812 footprint matches the PCB layout constraints. Check for RoHS compliance status if environmental regulations apply to the final assembly.
Selection Notes
Select this component when both high voltage isolation and superior noise attenuation are required in a single package. The X2Y design simplifies circuit topology by replacing multiple discrete components. Consider the flexible terminals if the application involves significant mechanical vibration or substrate flexing during operation.
Part Context
This part belongs to the Knowles Syfer 1812Y series, which specializes in high-reliability MLCCs. The Y designation typically indicates specific construction features tailored for robust performance. As a feed-through type, it offers lower parasitic inductance compared to standard parallel-plate capacitors, making it ideal for high-frequency noise management.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and electrical specifications carefully before considering alternative manufacturers.
