RC1/2682KB Equivalent & Substitute Parts

Part Overview

The RC1/2682KB is a 6.8 kOhms ±10% 0.5W axial carbon composition through-hole resistor manufactured by Kamaya Inc. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, maintenance, and production continuity. The RC series represents legacy resistor technology that remains in use across industrial, telecommunications, and consumer electronics applications where through-hole axial components are specified.

Substiute Parts

RC1/2682KB

Kamaya Inc.In Stock: 903RC1/2682KB Datasheet

Current PartRFQ

HWCC268

NTE Electronics, IncIn Stock: 2653HWCC268 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC1/2682KB is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 6.8 kOhms
• Power rating: 0.5W (1/2W)
• Package style: Axial through-hole
• Composition: Carbon composition
• Termination count: 2

Allowable Variation Parameters:

• Tolerance: Substitute parts may have equal or tighter tolerance (±10% or better)
• Operating temperature range: Substitute parts may have equal or extended range
• Physical dimensions: Minor variations acceptable within standard axial resistor envelope specifications
• Product status: Active status preferred for long-term availability

The HWCC268 from NTE Electronics, Inc. qualifies as a direct substitute based on matching all mandatory parameters while providing improved tolerance (±5% versus ±10%) and extended operating temperature range (-55°C ~ 150°C versus -55°C ~ 125°C).

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: HWCC268 (NTE Electronics, Inc.)

The HWCC268 is the qualified substitute for the RC1/2682KB based on the following engineering criteria:

1. Electrical Equivalence: Identical resistance value (6.8 kOhms) and power rating (0.5W) with matching carbon composition construction.

2. Tolerance Improvement: The HWCC268 provides ±5% tolerance compared to the RC1/2682KB's ±10% tolerance. This tighter tolerance is functionally compatible with applications designed for the original part and provides improved circuit performance in tolerance-sensitive applications.

3. Temperature Range Extension: Operating temperature range of -55°C ~ 150°C exceeds the original specification of -55°C ~ 125°C, providing broader environmental compatibility.

4. Physical Compatibility: Axial package dimensions (0.140" Dia x 0.375" L) are within standard through-hole resistor envelope specifications and compatible with PCB layouts designed for the RC1/2682KB.

5. Product Availability: HWCC268 maintains active production status with 2555 units in stock, ensuring long-term supply continuity compared to the obsolete RC1/2682KB.

6. Regulatory Compliance: HWCC268 is RoHS3 compliant, meeting current environmental and regulatory standards.

Frequently Asked Questions (FAQ)

Q: Can the HWCC268 be used as a direct replacement for the RC1/2682KB in existing designs?

A: Yes. The HWCC268 is electrically and mechanically compatible with the RC1/2682KB. Both components share identical resistance values, power ratings, carbon composition construction, and axial package style. Physical dimensions are within standard envelope specifications for through-hole axial resistors.

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

A: The HWCC268's ±5% tolerance is tighter than the RC1/2682KB's ±10% tolerance. This means the HWCC268 will maintain its 6.8 kOhms value within a narrower range. Applications designed for the original ±10% tolerance part will function correctly with the ±5% substitute, and circuits requiring tighter tolerance specifications will also be satisfied.

Q: Are there any thermal considerations when substituting the HWCC268 for the RC1/2682KB?

A: The HWCC268 operates across a wider temperature range (-55°C ~ 150°C) compared to the RC1/2682KB (-55°C ~ 125°C). Both components are rated for identical power dissipation (0.5W). Applications operating within the original temperature specification will experience no thermal compatibility issues with the substitute.

Q: How do the physical dimensions compare between these two parts?

A: The RC1/2682KB measures 0.142" Dia x 0.374" L (3.60mm x 9.50mm), while the HWCC268 measures 0.140" Dia x 0.375" L (3.56mm x 9.53mm). These dimensions are within standard axial resistor envelope tolerances and are compatible with PCB layouts designed for either component.

Q: What is the packaging difference between the RC1/2682KB and HWCC268?

A: The RC1/2682KB is supplied without specified packaging, while the HWCC268 is supplied in bag packaging. Both components are individual axial through-hole resistors suitable for manual or automated assembly processes.

Q: Is the HWCC268 RoHS compliant?

A: Yes. The HWCC268 is RoHS3 compliant, meeting current environmental and regulatory requirements for electronic components in the European Union and other regulated markets.

Q: Why is the RC1/2682KB classified as obsolete?

A: The RC1/2682KB is an older carbon composition resistor from the Kamaya Inc. RC series. Obsolescence reflects discontinuation of production by the original manufacturer. The HWCC268 from NTE Electronics, Inc. provides equivalent functionality with active production status and improved specifications.