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Product Detailed Parameters
- Description：CAP FEEDTHRU
- Series：B85321
- Mfr：EPCOS - TDK Electronics
- Package：Bulk
- Voltage - Rated：350V
- Current：100 A
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Bolt Mount
- Package / Case：Axial - Threaded Terminals
- Size / Dimension：2.165" Dia x 3.937" L (55.00mm x 100.00mm)
- Capacitance：4.7 µF
- Tolerance：±20%
- DC Resistance (DCR) (Max)：-
- Insertion Loss：100dB @ 100MHz
- Temperature Coefficient：-
- Ratings：-
- Height (Max)：-
- Thread Size：-
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Overview
The B85321A2945A101 is a cylindrical EMI feedthrough filter from the B85321 series, manufactured by TDK Electronics. It features bolt mount installation with dimensions of 55.00mm diameter and 100.00mm length. The component operates within a temperature range of -40°C to +85°C. Electrical specifications include a rated voltage of 250 V AC (50/60 Hz) or 600 V DC, and an insertion loss of 100dB at 100MHz.
Feature Summary
- Provides high attenuation for electromagnetic interference in power lines
- Designed for robust bolt mounting on chassis or panels
- Capable of handling significant DC and AC voltage ratings
Applications
- Industrial power supply filtering
- Medical equipment noise suppression
- Telecommunications infrastructure protection
Procurement Notes
Verify the specific suffix codes against official TDK documentation to ensure exact electrical characteristics match system requirements. Confirm that the bolt mount style aligns with available panel cutouts. Check for RoHS compliance status if environmental regulations apply to the final assembly. Ensure the operating temperature range covers the intended environment.
Selection Notes
Select this component when high insertion loss is required at 100MHz for power line applications. Consider the physical dimensions of 55mm x 100mm for enclosure space planning. Evaluate the 600V DC rating against peak voltage spikes in the circuit. Bolt mounting provides mechanical stability compared to soldered alternatives.
Part Context
This part belongs to the B85321 series of feedthrough capacitors. These components are engineered for effective EMI suppression in demanding environments. The series offers various capacitance values and current ratings to suit different power levels. TDK Electronics produces these filters for global industrial and commercial markets.
Replacement Considerations
Consult official substitution lists for equivalent feedthrough filters with matching voltage and current ratings. Verify dimensional compatibility before replacing to ensure existing mounting hardware remains usable. Cross-reference insertion loss curves to maintain signal integrity standards.
