RC14JB7K50 Equivalent & Substitute Parts

Part Overview

The RC14JB7K50 is a 7.5 kOhms ±5% 0.25W axial through-hole resistor manufactured by Stackpole Electronics Inc. This carbon composition resistor features non-inductive and pulse withstanding characteristics, designed for applications requiring robust performance across industrial temperature ranges. The product is currently obsolete, making equivalent substitute parts necessary for ongoing maintenance, repair, and legacy system support.

Substiute Parts

RC14JB7K50

Stackpole Electronics IncIn Stock: 777RC14JB7K50 Datasheet

Current PartRFQ

ASR14JA7K50

Stackpole Electronics IncIn Stock: 862ASR14JA7K50 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The ASR14JA7K50 qualifies as a direct substitute for the RC14JB7K50 based on the following critical parameters:

• Resistance Value: Both parts are rated at 7.5 kOhms
• Tolerance: Both maintain ±5% tolerance
• Power Rating: Both are 0.25W (1/4W) rated components
• Package Configuration: Both use axial through-hole packaging
• Electrical Compliance: Both are ROHS3 compliant and REACH unaffected

The primary difference lies in composition technology: the RC14JB7K50 uses carbon composition construction, while the ASR14JA7K50 employs metal film construction with flame retardant coating. Both compositions satisfy the electrical requirements for 7.5 kOhms ±5% at 0.25W in axial format.

Parameter Comparison

Engineering Selection Recommendations

The ASR14JA7K50 is the designated manufacturer substitute for the obsolete RC14JB7K50. Both parts meet identical electrical specifications (7.5 kOhms ±5% at 0.25W) and maintain ROHS3 compliance. The ASR14JA7K50 offers extended operating temperature capability (-55°C ~ 155°C versus -55°C ~ 125°C) and is currently in active production status, ensuring long-term availability for replacement applications.

Physical dimensions differ slightly: the ASR14JA7K50 is marginally smaller (0.091" Dia x 0.236" L) compared to the RC14JB7K50 (0.094" Dia x 0.248" L). This dimensional difference is negligible for standard through-hole PCB applications and does not affect electrical performance or mechanical fit in typical axial resistor footprints.

Frequently Asked Questions (FAQ)

Q: Can the ASR14JA7K50 directly replace the RC14JB7K50 in existing designs?

A: Yes. Both parts share identical resistance (7.5 kOhms), tolerance (±5%), power rating (0.25W), and axial package configuration. The ASR14JA7K50 is the manufacturer-designated substitute for the obsolete RC14JB7K50.

Q: What is the difference between carbon composition and metal film construction?

A: The RC14JB7K50 uses carbon composition technology, while the ASR14JA7K50 uses metal film technology with flame retardant coating. Both achieve the same electrical specifications for this application. Metal film construction in the ASR14JA7K50 provides extended temperature range capability (-55°C ~ 155°C).

Q: Are there physical size compatibility concerns?

A: The ASR14JA7K50 is slightly smaller (0.091" Dia x 0.236" L) than the RC14JB7K50 (0.094" Dia x 0.248" L). Standard axial resistor footprints accommodate both dimensions without modification.

Q: Is the ASR14JA7K50 currently available?

A: Yes. The ASR14JA7K50 maintains active product status and is available in production quantities, unlike the obsolete RC14JB7K50.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the RC14JB7K50 and ASR14JA7K50 are ROHS3 compliant and REACH unaffected, meeting identical regulatory requirements.