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Product Detailed Parameters
- Description：FILTER 1UF TH
- Series：B85321
- Mfr：EPCOS - TDK Electronics
- Package：Tray
- Voltage - Rated：500V
- Current：25 A
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Through Hole
- Package / Case：Axial - Threaded Terminals
- Size / Dimension：-
- Capacitance：-
- Tolerance：-
- DC Resistance (DCR) (Max)：-
- Insertion Loss：-
- Temperature Coefficient：-
- Ratings：-
- Height (Max)：-
- Thread Size：-
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Overview
The B85321A2205A250 is a feed-through capacitor from the EPCOS (TDK) B85321 series. It features a capacitance of 1 µF with ±20% tolerance and a rated voltage of 600 V DC or 250 V AC at 50/60 Hz. The component supports a maximum DC current of 25 A and has a maximum DC resistance of 4 mΩ. It operates within a temperature range of -40°C to +85°C and provides attenuation of 85 dB.
Feature Summary
- Provides high electromagnetic interference suppression through feed-through technology
- Supports high continuous current loads for power line filtering
- Designed for robust operation across wide industrial temperature ranges
Applications
- Power supply input filtering
- Battery charger circuits
- Portable device power regulation
Procurement Notes
Verify the manufacturer designation, as the component may be labeled under TDK Electronics following the corporate rebranding of EPCOS entities. Confirm that the specific suffix matches the required voltage and current ratings. Ensure compliance with RoHS directives if applicable to your assembly process. Check for any specific handling requirements regarding the through-hole mounting style.
Selection Notes
Select this component when high capacitance and current handling are required in a compact feed-through form factor. The 600 V DC rating makes it suitable for higher voltage DC bus applications. Consider the 25 A current rating against your system's peak load requirements. Verify that the physical dimensions fit the available panel or board space for the through-hole installation.
Part Context
This part belongs to the B85321 series of EMC feed-through filters manufactured by EPCOS, now operating under TDK Electronics. The series is designed for effective noise suppression in electronic equipment. The brand transition from EPCOS to TDK does not alter the product portfolio or technical specifications of existing components.
Replacement Considerations
Consult official TDK/EPCOS documentation for direct cross-references. Ensure any substitute maintains the 1 µF capacitance, 600 V DC rating, and 25 A current capacity. Verify that the replacement offers comparable attenuation characteristics and fits the same mechanical footprint.
