RC12KB15R0 Equivalent & Substitute Parts

Part Overview

The RC12KB15R0 is a 15 Ohm ±10% 0.5W through-hole axial resistor manufactured by Stackpole Electronics Inc. This carbon composition resistor features non-inductive and pulse-withstanding characteristics, with an operating temperature range of -55°C to 125°C. The part is currently obsolete, making identification of suitable substitute components essential for ongoing system support, maintenance, and new production requirements where legacy specifications must be maintained or upgraded.

Substiute Parts

RC12KB15R0

Stackpole Electronics IncIn Stock: 1107RC12KB15R0 Datasheet

Current PartRFQ

ASRM12JT15R0

Stackpole Electronics IncIn Stock: 902ASRM12JT15R0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC12KB15R0 is determined by the following critical parameters:

• Resistance Value: Must be 15 Ohms
• Power Rating: Must be 0.5W (1/2W) minimum
• Package Type: Must be Axial through-hole configuration
• Tolerance: Must be ±10% or better (tighter tolerance acceptable)
• Operating Temperature Range: Must encompass or exceed -55°C to 125°C
• Regulatory Compliance: Must maintain ROHS3 compliance

The ASRM12JT15R0 qualifies as a direct substitute by meeting all critical electrical and mechanical parameters. While it employs metal film composition instead of carbon composition, it maintains the same resistance value, power rating, axial package, and exceeds the tolerance specification with ±5% accuracy. The substitute's extended operating temperature range (-55°C to 155°C) and active product status provide improved availability and performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The ASRM12JT15R0 is the qualified substitute for the obsolete RC12KB15R0. Selection is based on:

• Electrical Equivalence: Both parts deliver 15 Ohm resistance at 0.5W power rating with compatible tolerance specifications
• Mechanical Compatibility: Identical axial package configuration ensures direct board-level replacement without layout modifications
• Regulatory Compliance: Both parts maintain ROHS3 compliance, satisfying environmental and safety requirements
• Product Availability: The substitute's active product status ensures long-term supply chain viability, whereas the main part is obsolete
• Performance Enhancement: The metal film composition and tighter ±5% tolerance of the substitute provide improved accuracy and stability compared to the carbon composition original

Frequently Asked Questions (FAQ)

Q: Can the ASRM12JT15R0 be used as a direct replacement for the RC12KB15R0 in existing designs?

A: Yes. Both parts share identical resistance values, power ratings, and axial package configurations. The substitute's superior tolerance specification (±5% versus ±10%) and extended operating temperature range (-55°C to 155°C versus -55°C to 125°C) make it functionally compatible for direct board-level substitution.

Q: What is the primary difference between these two resistor types?

A: The main part uses carbon composition technology, while the substitute employs metal film technology. Metal film resistors typically offer better tolerance accuracy, lower noise, and improved temperature stability. Both technologies meet the electrical requirements of this application.

Q: Are there packaging differences between these parts?

A: The RC12KB15R0 is supplied in bulk packaging, while the ASRM12JT15R0 is available in Tape & Reel (TR) format. Both maintain the same axial through-hole configuration for circuit board assembly.

Q: Why is the RC12KB15R0 listed as obsolete?

A: Obsolescence indicates the manufacturer has discontinued production. The ASRM12JT15R0 represents the current active equivalent from the same manufacturer, ensuring continued availability and support.

Q: Do both parts comply with environmental regulations?

A: Yes. Both the RC12KB15R0 and ASRM12JT15R0 are ROHS3 compliant, meeting current environmental and hazardous substance restrictions.