RC14JB2K20 Equivalent & Substitute Parts

Part Overview

The RC14JB2K20 is a 2.2 kOhms ±5% 0.25W (1/4W) through-hole resistor with axial leads manufactured by Stackpole Electronics Inc. This carbon composition resistor features non-inductive and pulse withstanding characteristics, designed for applications requiring robust performance across the -55°C to 125°C operating temperature range.

The RC14JB2K20 is classified as obsolete. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for legacy systems and new designs requiring this specific resistance value and power rating.

Substiute Parts

RC14JB2K20

Stackpole Electronics IncIn Stock: 1242RC14JB2K20 Datasheet

Current PartRFQ

ASR14JB2K20

Stackpole Electronics IncIn Stock: 955ASR14JB2K20 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC14JB2K20 is determined by the following critical parameters:

• Resistance Value: 2.2 kOhms (exact match required)
• Tolerance: ±5% (acceptable tolerance band)
• Power Rating: 0.25W / 1/4W (exact match required)
• Package Type: Axial (form factor compatibility)
• Operating Temperature Range: Minimum -55°C to 125°C coverage
• Electrical Characteristics: Pulse withstanding capability
• Compliance: RoHS3 compliance for regulatory alignment

The ASR14JB2K20 qualifies as a direct substitute, meeting all critical electrical parameters while offering enhanced specifications including extended operating temperature range (-55°C to 155°C), improved composition (metal film), and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ASR14JB2K20 is the recommended substitute for the obsolete RC14JB2K20. Both parts are manufactured by Stackpole Electronics Inc and maintain identical electrical specifications: 2.2 kOhms resistance, ±5% tolerance, and 0.25W power rating in axial package configuration.

The ASR14JB2K20 offers the following advantages:

• Active product status ensures ongoing availability and supply chain continuity
• Extended operating temperature range (-55°C to 155°C) provides broader application flexibility
• Metal film composition with flame retardant coating enhances reliability and safety characteristics
• Pulse withstanding capability maintained for demanding circuit applications
• Compact physical dimensions (2.30mm x 6.00mm) provide improved board layout compatibility

Both parts maintain compliance with regulatory requirements and are suitable for direct substitution in legacy system repairs and new designs requiring this resistance and power rating specification.

Frequently Asked Questions (FAQ)

Q: Can the ASR14JB2K20 directly replace the RC14JB2K20 in existing designs?

A: Yes. Both parts share identical electrical specifications: 2.2 kOhms resistance, ±5% tolerance, 0.25W power rating, and axial package configuration. The ASR14JB2K20 meets or exceeds all operating parameters of the RC14JB2K20.

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

A: The RC14JB2K20 uses carbon composition construction, while the ASR14JB2K20 uses metal film construction. Metal film resistors typically offer improved stability, lower noise characteristics, and enhanced reliability. Both compositions meet the specified electrical requirements for this application.

Q: Are the physical dimensions compatible?

A: The ASR14JB2K20 (2.30mm x 6.00mm) is slightly smaller than the RC14JB2K20 (2.40mm x 6.30mm). Both maintain axial package configuration and standard through-hole lead spacing, ensuring compatibility with existing PCB layouts designed for 1/4W axial resistors.

Q: Why is the RC14JB2K20 marked as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The ASR14JB2K20 represents the active equivalent, providing continued access to the same electrical specifications with enhanced features and ongoing manufacturing support.

Q: What is the operating temperature difference between these parts?

A: The RC14JB2K20 operates from -55°C to 125°C, while the ASR14JB2K20 extends to -55°C to 155°C. The ASR14JB2K20's extended upper temperature limit provides additional margin for high-temperature applications without compromising performance at standard operating conditions.