WMF1D47K-F Equivalent & Substitute Parts

Part Overview

The WMF1D47K-F is a 4700 pF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 100V DC voltage rating and polyester dielectric. This axial through-hole component is designed for general purpose applications and maintains an active product status. The part is ROHS3 compliant and carries MSL Level 1 rating, indicating unlimited moisture sensitivity protection.

Substitute parts are identified when equivalent capacitance and tolerance values are maintained while other electrical or mechanical parameters may differ to accommodate specific circuit requirements or availability constraints.

Substiute Parts

WMF1D47K-F

Cornell Dubilier Electronics (CDE)In Stock: 933WMF1D47K-F Datasheet

Current PartRFQ

WMF2D47K-F

Cornell Dubilier Electronics (CDE)In Stock: 1870WMF2D47K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the WMF1D47K-F is based on the following criteria:

Maintained Parameters (Required for Substitution):

• Capacitance value: 4700 pF
• Tolerance: ±10%
• Dielectric material: Polyester
• Mounting type: Through Hole (Axial)
• Termination type: PC Pins
• Operating temperature range: -55°C ~ 125°C
• RoHS compliance status
• MSL rating

Variable Parameters (Allowed to Differ):

• Voltage rating (DC): May be higher than the original specification
• Physical dimensions: Minor variations permitted within axial package constraints

The WMF2D47K-F qualifies as a direct substitute because it maintains all required electrical characteristics while providing an elevated voltage rating of 250V DC, which is compatible with circuits designed for 100V operation.

Parameter Comparison

Engineering Selection Recommendations

Both the WMF1D47K-F and WMF2D47K-F are active products from Cornell Dubilier Electronics with identical ROHS3 compliance and MSL Level 1 ratings. Selection between these parts is determined by circuit voltage requirements:

WMF1D47K-F Selection Criteria:

• Circuits with maximum operating voltage of 100V DC
• Space-constrained applications where minimal component diameter is required (5.00mm)

WMF2D47K-F Selection Criteria:

• Circuits with operating voltages between 100V and 250V DC
• Applications requiring higher voltage margin for transient protection
• Designs where voltage derating is a design consideration

Both parts maintain identical capacitance, tolerance, temperature range, and termination specifications. The physical dimension difference (0.197" to 0.201" diameter) is negligible for standard PCB layouts. Both parts are suitable for general purpose applications and carry equivalent regulatory compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can WMF2D47K-F replace WMF1D47K-F in a 100V circuit?

A: Yes. The WMF2D47K-F operates at 250V DC rating and is fully compatible with circuits designed for 100V operation. The higher voltage rating provides additional safety margin without affecting capacitance or tolerance performance.

Q: Are there physical compatibility issues between these parts?

A: Both parts are axial through-hole components with identical lead spacing (0.563" length). The diameter difference (5.00mm vs 5.10mm) is within standard PCB tolerance and does not affect mounting compatibility.

Q: Do both parts meet the same compliance standards?

A: Yes. Both WMF1D47K-F and WMF2D47K-F are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 rating. Both are classified under ECCN EAR99.

Q: What is the temperature operating range for both parts?

A: Both parts operate across -55°C to 125°C, providing identical thermal performance for general purpose applications.

Q: Are there any electrical performance differences between these substitutes?

A: No. Both parts maintain 4700 pF capacitance with ±10% tolerance and polyester dielectric. The only electrical difference is the voltage rating, where WMF2D47K-F provides higher voltage capability.

Q: Which part should be selected for new designs?

A: Selection depends on circuit voltage requirements. For 100V maximum circuits, either part is acceptable. For circuits approaching or exceeding 100V, WMF2D47K-F is the appropriate selection.