DFK-20-0001 Equivalent & Substitute Parts

Part Overview

The DFK-20-0001 is a 2-line common mode choke (CMC) with through-hole mounting, rated for 1A maximum current and 500mOhm maximum DC resistance. Manufactured by SCHURTER Inc., this component is classified as Active product status. Substitute parts may be required due to inventory constraints, design revisions, or procurement optimization while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

DFK-20-0001

SCHURTER Inc.In Stock: 1069DFK-20-0001 Datasheet

Current PartRFQ

DFK-20-0002

SCHURTER Inc.In Stock: 905DFK-20-0002 Datasheet

Parametric EquivalentRFQ

DFK-25-0001

SCHURTER Inc.In Stock: 1022DFK-25-0001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DFK-20-0001 are qualified based on the following critical parameters:

Electrical Compatibility:

• Number of Lines: 2 (required match)
• Current Rating (Max): 1A (required match)
• DC Resistance (DCR) (Max): ≤500mOhm (equal or lower resistance acceptable)
• Operating Temperature Range: -25°C ~ 100°C (required match)

Mechanical Compatibility:

• Mounting Type: Through Hole (required match)
• Package / Case: Nonstandard (required match)

Regulatory & Compliance:

• RoHS Status: ROHS3 Compliant (required match)
• Manufacturer: SCHURTER Inc. (same manufacturer preferred for consistency)

The DFK-20-0001 has two qualified substitutes: DFK-20-0002 and DFK-25-0001. Both maintain identical electrical ratings and operating parameters. The DFK-25-0001 differs only in physical dimensions (25.00mm x 25.00mm versus 20.00mm x 20.00mm) and DC resistance tolerance (510mOhm maximum versus 500mOhm maximum).

Parameter Comparison

Engineering Selection Recommendations

DFK-20-0002: Direct parametric equivalent to DFK-20-0001. Identical electrical specifications, operating temperature range, and physical dimensions. Both parts are Active status with ROHS3 compliance. Selection between DFK-20-0001 and DFK-20-0002 depends on inventory availability and procurement lead times.

DFK-25-0001: Functionally equivalent with identical electrical performance and operating temperature range. The primary difference is increased physical size (25.00mm x 25.00mm versus 20.00mm x 20.00mm) and marginally higher DC resistance tolerance (510mOhm maximum versus 500mOhm maximum). Selection of DFK-25-0001 requires verification that the larger footprint accommodates the PCB layout and that the 10mOhm increase in maximum DC resistance is acceptable for the application circuit.

All three parts maintain ROHS3 compliance and Active product status, ensuring long-term availability and regulatory consistency.

Frequently Asked Questions (FAQ)

Q: Can DFK-20-0002 be used as a direct replacement for DFK-20-0001?

A: Yes. DFK-20-0002 is a parametric equivalent with identical electrical ratings (1A, 500mOhm DCR maximum), operating temperature range (-25°C ~ 100°C), mounting type (through-hole), and physical dimensions (20.00mm x 20.00mm). No circuit modifications are required.

Q: What is the key difference between DFK-20-0001 and DFK-25-0001?

A: The primary differences are physical size and DC resistance tolerance. DFK-25-0001 measures 25.00mm x 25.00mm (versus 20.00mm x 20.00mm) and has a maximum DC resistance of 510mOhm (versus 500mOhm). Electrical performance and current rating remain identical at 1A. PCB layout compatibility must be verified before substitution.

Q: Are all three parts ROHS3 compliant?

A: Yes. DFK-20-0001, DFK-20-0002, and DFK-25-0001 are all ROHS3 compliant with Active product status.

Q: Can DFK-25-0001 be used if space is limited on the PCB?

A: No. The larger 25.00mm x 25.00mm footprint of DFK-25-0001 may not fit in applications designed for the 20.00mm x 20.00mm form factor. Physical layout verification is required.

Q: Does the 10mOhm difference in DCR between DFK-20-0001 and DFK-25-0001 affect circuit performance?

A: The 10mOhm increase in maximum DC resistance (from 500mOhm to 510mOhm) is within typical tolerance ranges for common mode chokes. Circuit impact depends on application-specific requirements. Verify that the higher resistance value meets your EMI filtering and power dissipation specifications.

Q: What is the current inventory status for these parts?

A: DFK-20-0001 has 1054 pieces in stock, DFK-20-0002 has 796 pieces, and DFK-25-0001 has 946 pieces. Availability may change; verify current stock before finalizing procurement decisions.