CF1/4C684J Equivalent & Substitute Parts

Part Overview

The CF1/4C684J is a 680 kOhms ±5% 0.25W through-hole axial resistor manufactured by KOA Speer Electronics, Inc. This carbon film resistor features flame-proof and safety characteristics, designed for general-purpose applications requiring reliable performance across industrial temperature ranges. The part is currently in active production status with robust inventory availability. Substitute parts are identified to provide procurement flexibility while maintaining identical electrical and mechanical specifications for direct circuit board replacement.

Substiute Parts

CF1/4C684J

KOA Speer Electronics, Inc.In Stock: 1913CF1/4C684J Datasheet

Current PartRFQ

CF1/4CT52R684J

KOA Speer Electronics, Inc.In Stock: 11054CF1/4CT52R684J Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CF1/4C684J are identified based on strict parametric equivalence. The following criteria determine substitutability:

• Resistance value: 680 kOhms (exact match required)
• Tolerance: ±5% (exact match required)
• Power rating: 0.25W / 1/4W (exact match required)
• Composition: Carbon Film (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Temperature coefficient: 0 / -1000 ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)
• Physical dimensions: 0.091" Dia × 0.240" L (exact match required)
• Regulatory compliance: ROHS3 Compliant, REACH Unaffected (exact match required)

The primary difference between the main part and substitute is packaging format: the CF1/4C684J is supplied in Bulk packaging, while the CF1/4CT52R684J is supplied in Cut Tape (CT) format. Both parts share identical electrical performance and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the CF1/4C684J and CF1/4CT52R684J are active production parts from KOA Speer Electronics, Inc., with full ROHS3 compliance and REACH unaffected status. Selection between these parts depends on procurement and assembly requirements rather than electrical performance:

• CF1/4C684J (Bulk packaging) is suitable for high-volume manual assembly or reel-fed automated processes where bulk quantities are preferred.
• CF1/4CT52R684J (Cut Tape packaging) is optimized for automated pick-and-place assembly systems and tape-based component handling.

Both parts deliver identical electrical characteristics, mechanical fit, and regulatory compliance. The choice between them is determined by supply chain logistics, assembly equipment compatibility, and inventory management practices.

Frequently Asked Questions (FAQ)

Q: Can CF1/4CT52R684J be used as a direct replacement for CF1/4C684J?

A: Yes. Both parts are electrically and mechanically identical. The only difference is packaging format (Bulk versus Cut Tape). Direct substitution is valid for circuit board applications.

Q: Are there any performance differences between these parts?

A: No. Both parts share identical resistance value (680 kOhms), tolerance (±5%), power rating (0.25W), temperature coefficient (0 / -1000 ppm/°C), operating temperature range (-55°C to 155°C), and physical dimensions (0.091" Dia × 0.240" L).

Q: What does the packaging format difference mean for assembly?

A: CF1/4C684J arrives in bulk form, suitable for manual or reel-fed assembly. CF1/4CT52R684J arrives in cut tape format, optimized for automated tape-based pick-and-place systems. Both formats contain the same component.

Q: Are both parts currently available?

A: Yes. CF1/4C684J has 1,889 pieces in stock, and CF1/4CT52R684J has 10,997 pieces in stock. Both maintain active production status.

Q: Do these parts meet regulatory requirements?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and safety regulations.

Q: Can these parts be used interchangeably in existing designs?

A: Yes. Since electrical specifications, mechanical dimensions, and regulatory compliance are identical, either part can be used without design modification or re-qualification.