DLR1P22K-F Film Capacitor Equivalent & Substitute Parts

Part Overview

The DLR1P22K-F is a 0.22 µF polyester film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 100V DC voltage rating and ±10% tolerance. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design support and procurement continuity. The radial through-hole configuration and general-purpose application profile make this capacitor suitable for replacement with functionally equivalent alternatives that maintain the same electrical and mechanical specifications.

Substiute Parts

DLR1P22K-F

Cornell Dubilier Electronics (CDE)In Stock: 746DLR1P22K-F Datasheet

Current PartRFQ

BFC237121224

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 977BFC237121224 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DLR1P22K-F is determined by strict alignment with the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Capacitance value of 0.22 µF (exact match required)
• DC voltage rating of 100V minimum
• Tolerance of ±10% or tighter
• Polyester dielectric material
• Operating temperature range that encompasses or exceeds -40°C ~ 85°C

Mechanical Compatibility Criteria:

• Through-hole radial mounting configuration
• Lead spacing of 0.354" (9.00mm) or compatible PCB hole patterns
• Physical dimensions that permit installation in existing PCB layouts

Regulatory Compliance:

• ROHS3 compliance maintained
• Moisture Sensitivity Level (MSL) of 1 or equivalent

The BFC237121224 (Vishay Beyschlag/Draloric/BC Components, MKT371 series) satisfies all substitution criteria and is classified as an active product with current manufacturing status.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: BFC237121224

The BFC237121224 is the recommended substitute for the obsolete DLR1P22K-F based on the following engineering factors:

Electrical Compatibility: All critical electrical parameters match the original specification: 0.22 µF capacitance, 100V DC rating, ±10% tolerance, and polyester dielectric. The substitute's operating temperature range of -55°C ~ 105°C exceeds the original -40°C ~ 85°C specification, providing enhanced thermal margin.

Regulatory Compliance: Both components maintain ROHS3 compliance and carry identical MSL ratings of 1 (Unlimited), ensuring no additional moisture handling requirements during assembly or storage.

Product Status: The BFC237121224 is classified as an active product with current manufacturing status, ensuring long-term availability and supply chain continuity compared to the obsolete DLR1P22K-F.

Physical Considerations: The substitute features a more compact physical footprint (10.00mm L x 4.00mm W vs. 15.70mm L x 8.50mm W) and reduced lead spacing (7.62mm vs. 9.00mm). PCB layout verification is required to confirm that the different lead spacing accommodates existing hole patterns or if minor layout modifications are necessary.

Dielectric Enhancement: The BFC237121224 utilizes metallized polyester film, which is a standard industry variant that maintains electrical equivalence while offering improved volumetric efficiency compared to standard polyester film.

Frequently Asked Questions (FAQ)

Q: Can the BFC237121224 be used as a direct replacement for the DLR1P22K-F without PCB modifications?

A: Electrical substitution is valid. However, the lead spacing differs (7.62mm vs. 9.00mm), requiring verification that the PCB hole pattern accommodates the substitute component. Physical layout review is necessary before implementation.

Q: What is the significance of the metallized polyester dielectric in the BFC237121224?

A: Metallized polyester is a standard variant of polyester film capacitors that maintains the same electrical characteristics as standard polyester film. The metallization improves volumetric efficiency and is electrically equivalent for this application.

Q: Does the wider operating temperature range of the BFC237121224 affect circuit performance?

A: The extended temperature range (-55°C ~ 105°C vs. -40°C ~ 85°C) provides additional thermal margin and does not negatively impact performance. The substitute remains fully functional within the original component's specified operating range.

Q: Are there any compliance or certification differences between the two parts?

A: Both components are ROHS3 compliant with identical MSL ratings of 1 (Unlimited). No additional compliance considerations apply to the substitution.

Q: What is the inventory status of the substitute part?

A: The BFC237121224 is currently in active production with 922 pieces available in new original stock, ensuring procurement availability compared to the obsolete DLR1P22K-F.

Q: How do the physical dimensions affect component placement?

A: The BFC237121224 is significantly more compact (10.00mm L x 4.00mm W vs. 15.70mm L x 8.50mm W). This smaller footprint may provide PCB layout advantages, though lead spacing differences require hole pattern verification.