RC12KB10R0 Equivalent & Substitute Parts

Part Overview

The RC12KB10R0 is a 10 Ohm, ±10% tolerance, 0.5W (1/2W) through-hole axial resistor 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 product is classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

RC12KB10R0

Stackpole Electronics IncIn Stock: 788RC12KB10R0 Datasheet

Current PartRFQ

ASRM12JB10R0

Stackpole Electronics IncIn Stock: 1092ASRM12JB10R0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC12KB10R0 is determined by the following critical parameters:

• Resistance Value: Must be 10 Ohms (exact match required)
• Power Rating: Must be 0.5W or higher to maintain thermal performance
• Package Type: Must be Axial to ensure mechanical and electrical compatibility
• Operating Temperature Range: Must encompass or exceed -55°C to 125°C
• Compliance Standards: Must maintain ROHS3 compliance and REACH unaffected status

The ASRM12JB10R0 qualifies as a direct substitute based on these parameters. While it employs metal film composition instead of carbon composition, it meets all electrical and mechanical requirements for functional equivalence in the specified application envelope.

Parameter Comparison

Engineering Selection Recommendations

The ASRM12JB10R0 is the qualified substitute for the obsolete RC12KB10R0. Selection of this substitute is supported by:

• Product Status Alignment: The ASRM12JB10R0 maintains active production status, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements.
• Electrical Equivalence: Identical resistance value and power rating ensure functional compatibility in the original circuit application.
• Enhanced Tolerance: The ±5% tolerance of the ASRM12JB10R0 provides improved precision compared to the ±10% tolerance of the RC12KB10R0.
• Extended Temperature Range: The ASRM12JB10R0 supports operation to 155°C, exceeding the original -55°C to 125°C specification.

Frequently Asked Questions (FAQ)

Q: Can the ASRM12JB10R0 be used as a direct replacement for the RC12KB10R0?

A: Yes. Both components share identical resistance values, power ratings, and axial package configurations. The ASRM12JB10R0 meets all electrical and mechanical requirements for functional equivalence.

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

A: The RC12KB10R0 uses carbon composition construction, while the ASRM12JB10R0 uses metal film construction. Metal film resistors typically offer tighter tolerance specifications and lower temperature coefficients. Both compositions are suitable for general-purpose applications within their specified operating parameters.

Q: Does the improved tolerance of the ASRM12JB10R0 affect circuit performance?

A: The ±5% tolerance of the ASRM12JB10R0 provides tighter resistance accuracy compared to the ±10% tolerance of the RC12KB10R0. This improvement does not negatively affect circuit performance and may enhance precision in applications sensitive to component tolerance.

Q: Are there any package dimension differences between these components?

A: The RC12KB10R0 measures 0.142" Dia x 0.374" L (3.60mm x 9.50mm), while the ASRM12JB10R0 measures 0.118" Dia x 0.354" L (3.00mm x 9.00mm). Both are axial package types and fit standard through-hole PCB layouts. The ASRM12JB10R0 is slightly more compact.

Q: What compliance certifications apply to both components?

A: Both the RC12KB10R0 and ASRM12JB10R0 are ROHS3 compliant and REACH unaffected. Both carry EAR99 ECCN classification.