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Product Detailed Parameters
- Description：CAP FEEDTHRU 1UF 20% 160V
- Series：B85121
- Mfr：EPCOS - TDK Electronics
- Package：Bulk
- Voltage - Rated：160V
- Current：25 A
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Bolt Mount
- Package / Case：Axial, Bushing
- Size / Dimension：0.787" Dia x 2.362" L (20.00mm x 60.00mm)
- Capacitance：1 µF
- Tolerance：±20%
- DC Resistance (DCR) (Max)：-
- Insertion Loss：85dB @ 100MHz
- Temperature Coefficient：-
- Ratings：-
- Height (Max)：-
- Thread Size：M12
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Overview
The B85121A105B250 is a feed-through capacitor manufactured by EPCOS (TDK Electronics). It features a cylindrical construction with a capacitance of 1 µF and a tolerance of ±20%. The component is rated for a maximum operating voltage of 160V DC and supports an amperage flow of 25 A. Designed for high-frequency noise suppression, it integrates filtering capabilities directly into power line connections.
Feature Summary
- Feed-through design for direct panel or cable mounting
- High current handling capability up to 25 A
- Integrated low-pass filtering for electromagnetic interference reduction
Applications
- Automotive electronic systems
- Industrial power supply units
- Consumer electronics requiring EMI suppression
Procurement Notes
Verify the complete part number against official EPCOS/TDK documentation to ensure correct voltage and capacitance ratings. Confirm package compatibility and mounting requirements prior to integration. Check for RoHS compliance status in the latest datasheet. Ensure storage conditions meet manufacturer specifications to maintain performance integrity.
Selection Notes
Select this component when high-current feed-through filtering is required in compact spaces. The 1 µF value provides effective attenuation for specific frequency ranges. Evaluate thermal management needs given the 25 A current rating. Consider mechanical constraints for cylindrical mounting configurations in final assembly designs.
Part Context
This component belongs to the B85121 series of feed-through capacitors from EPCOS (TDK Electronics). These components are engineered for robust electromagnetic compatibility in demanding environments. The series offers reliable performance in applications where space efficiency and high current capacity are critical design parameters.
Replacement Considerations
Consult official TDK/EPCOS substitution guides for verified equivalents. Cross-reference electrical ratings including capacitance, voltage, and current handling. Verify mechanical dimensions and mounting styles match existing board layouts. Ensure environmental certifications align with project requirements.
