OA474KE Equivalent & Substitute Parts

Part Overview

The OA474KE is a 470 kOhms ±10% 1W axial through-hole resistor manufactured by Ohmite as part of the Little Demon® OA series. This carbon composition resistor features pulse withstanding capability and is designed for through-hole applications. The product is currently obsolete, making equivalent substitutes necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

OA474KE

OhmiteIn Stock: 811OA474KE Datasheet

Current PartRFQ

VR68000004703JAC00

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 2368VR68000004703JAC00 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the OA474KE is determined by the following critical parameters:

• Resistance Value: 470 kOhms (exact match required)
• Power Rating: 1W (exact match required)
• Package Configuration: Axial through-hole (exact match required)
• Termination Count: 2 (exact match required)
• Pulse Withstanding Capability: Required feature for functional equivalence

The VR68000004703JAC00 qualifies as a direct substitute because it maintains the same resistance value, power rating, package type, and pulse withstanding feature. While the substitute offers improved tolerance (±5% versus ±10%) and includes additional specifications such as temperature coefficient and operating temperature range, these represent enhancements rather than deviations from the original specification.

Parameter Comparison

Engineering Selection Recommendations

The VR68000004703JAC00 is the designated manufacturer-recommended substitute for the OA474KE. Selection of this substitute is supported by the following factors:

• Product Status: The OA474KE is obsolete, while the VR68000004703JAC00 is active and maintains current manufacturing support.
• Compliance: The substitute meets ROHS3 compliance requirements, whereas the main part does not specify compliance status.
• Regulatory Alignment: Both parts maintain REACH Unaffected status, ensuring regulatory consistency.
• Functional Equivalence: The substitute maintains all critical electrical parameters (resistance, power rating, pulse withstanding capability) and physical form factor (axial package) required for direct replacement.
• Enhanced Specifications: The substitute provides tighter tolerance (±5% versus ±10%), defined temperature coefficient, and specified operating temperature range, which may improve circuit performance in temperature-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can the VR68000004703JAC00 be used as a direct replacement for the OA474KE in existing designs?

A: Yes. Both parts share identical resistance values (470 kOhms), power ratings (1W), package configurations (axial), and pulse withstanding features. The axial package dimensions differ slightly (0.268" Dia x 0.709" L versus 0.236" Dia x 0.591" L), but both are standard through-hole axial packages compatible with PCB layouts designed for axial resistors.

Q: What is the primary difference between these two resistors?

A: The main difference is composition: the OA474KE uses carbon composition technology, while the VR68000004703JAC00 uses metal film technology. The substitute also provides tighter tolerance (±5% versus ±10%) and includes specified temperature coefficient and operating temperature range.

Q: Are there any compatibility concerns when substituting the VR68000004703JAC00 for the OA474KE?

A: No compatibility concerns exist for standard through-hole PCB applications. Both parts are axial configuration with two terminations. The slightly larger physical dimensions of the substitute should not present issues in typical PCB layouts, as axial resistor spacing is standardized.

Q: Why is the OA474KE obsolete?

A: The OA474KE is part of the Little Demon® OA series, which has been discontinued by Ohmite. The VR68000004703JAC00 represents the current active equivalent from Vishay Beyschlag/Draloric/BC Components.

Q: Does the substitute meet the same regulatory requirements?

A: Both parts maintain REACH Unaffected status. The substitute additionally meets ROHS3 compliance, providing enhanced regulatory alignment with current manufacturing standards.