RC1/2684KB Equivalent & Substitute Parts

Part Overview

The RC1/2684KB is a 680 kOhms ±10% 0.5W through-hole resistor with axial leads manufactured by Kamaya Inc. This carbon composition resistor operates across a temperature range of -55°C to 125°C and features a two-termination axial package design. The part is classified as obsolete, necessitating identification of equivalent substitute components for ongoing applications and new designs requiring this resistance value and power rating.

Substiute Parts

RC1/2684KB

Kamaya Inc.In Stock: 844RC1/2684KB Datasheet

Current PartRFQ

HWCC468

NTE Electronics, IncIn Stock: 2613HWCC468 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC1/2684KB is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

• Resistance value: 680 kOhms (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Composition: Carbon composition (exact match required)
• Number of terminations: 2 (exact match required)

Secondary Compatibility Parameters:

• Tolerance: ±10% or tighter (tighter tolerance acceptable)
• Operating temperature range: Must encompass or exceed -55°C ~ 125°C
• Physical dimensions: Must be compatible with axial through-hole PCB mounting

The HWCC468 manufactured by NTE Electronics, Inc. satisfies all primary substitution criteria with identical resistance, power rating, package type, and composition. The substitute part features improved tolerance (±5% versus ±10%) and extended operating temperature range (-55°C ~ 150°C), providing enhanced performance characteristics while maintaining full functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The HWCC468 is the direct substitute for the obsolete RC1/2684KB. Selection of this substitute is based on the following engineering factors:

Product Status: The RC1/2684KB is classified as obsolete. The HWCC468 is active and maintains current manufacturing status, ensuring availability for production and replacement applications.

Compliance and Certifications: The HWCC468 carries RoHS3 compliance certification, meeting current regulatory requirements for electronic component manufacturing and environmental standards. Both parts share identical ECCN (EAR99) and HTSUS (8533.10.0060) classifications.

Performance Enhancement: The HWCC468 provides tighter tolerance specification (±5% versus ±10%) and extended operating temperature range (-55°C ~ 150°C versus -55°C ~ 125°C), delivering improved performance margins without functional compromise.

Physical Compatibility: Dimensional variations between the two parts (0.142" Dia x 0.374" L versus 0.140" Dia x 0.375" L) remain within acceptable tolerances for standard axial through-hole PCB mounting applications.

Frequently Asked Questions (FAQ)

Q: Can the HWCC468 directly replace the RC1/2684KB in existing designs?

A: Yes. The HWCC468 provides direct functional replacement with identical resistance value (680 kOhms), power rating (0.5W), package configuration (axial), and composition (carbon composition). Physical dimensions are compatible with standard through-hole mounting.

Q: What is the significance of the tolerance difference between ±10% and ±5%?

A: The HWCC468 tolerance of ±5% is tighter than the RC1/2684KB tolerance of ±10%. This means the HWCC468 maintains resistance values within a narrower range around the nominal 680 kOhms specification. Tighter tolerance is functionally compatible with applications designed for ±10% tolerance.

Q: Does the extended operating temperature range of the HWCC468 affect compatibility?

A: No. The HWCC468 operating range of -55°C ~ 150°C encompasses the RC1/2684KB range of -55°C ~ 125°C. Extended temperature capability provides additional performance margin and is fully compatible with applications requiring the original temperature specification.

Q: Are there packaging differences between these parts?

A: The RC1/2684KB is supplied in bulk inventory format, while the HWCC468 is packaged in bags. Both maintain identical axial through-hole package configuration suitable for PCB mounting. Packaging format does not affect electrical or mechanical compatibility.

Q: What is the inventory status for these parts?

A: The RC1/2684KB is obsolete with 756 pieces available in current stock. The HWCC468 is active with 2515 pieces in current inventory, ensuring reliable supply for ongoing production requirements.

Q: Are both parts subject to the same export classifications?

A: Yes. Both the RC1/2684KB and HWCC468 share identical ECCN (EAR99) and HTSUS (8533.10.0060) classifications, simplifying procurement and compliance documentation.