RC12JB12M0 Equivalent & Substitute Parts

Part Overview

The RC12JB12M0 is a 12 MOhms ±5% 0.5W through-hole axial resistor manufactured by Stackpole Electronics Inc. This carbon composition resistor features non-inductive and pulse withstanding characteristics, designed for applications requiring high resistance values with tight tolerance specifications. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The primary substitute maintains the same resistance value and power rating while offering different tolerance and active product status.

Substiute Parts

RC12JB12M0

Stackpole Electronics IncIn Stock: 1011RC12JB12M0 Datasheet

Current PartRFQ

RC12KB12M0

Stackpole Electronics IncIn Stock: 704RC12KB12M0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC12JB12M0 is based on the following critical parameters that must remain constant or compatible:

• Resistance value: 12 MOhms (exact match required)
• Power rating: 0.5W / 1/2W (exact match required)
• Package type: Axial (exact match required)
• Composition: Carbon Composition (exact match required)
• Operating temperature range: -55°C ~ 125°C (exact match required)
• Features: Non-Inductive, Pulse Withstanding (exact match required)

The RC12KB12M0 qualifies as a substitute because it maintains all critical electrical and mechanical parameters. The tolerance difference (±10% versus ±5%) represents a relaxation of the tolerance specification, which is acceptable in applications where the tighter tolerance of the original part is not mandatory. Both parts are ROHS3 compliant and share identical physical dimensions and termination characteristics.

Parameter Comparison

Engineering Selection Recommendations

The RC12KB12M0 is the designated substitute for the obsolete RC12JB12M0. Selection of this substitute is based on:

• Active product status: The RC12KB12M0 maintains active manufacturing status, ensuring continued availability and supply chain reliability.
• Regulatory compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements.
• Electrical equivalence: Identical resistance value, power rating, and operating temperature range ensure functional compatibility in circuit applications.
• Mechanical compatibility: Identical axial package dimensions and termination configuration enable direct board-level substitution without layout modifications.

The tolerance difference (±10% versus ±5%) should be evaluated against circuit requirements. Applications with strict tolerance specifications may require circuit redesign or alternative component selection strategies.

Frequently Asked Questions (FAQ)

Q: Can RC12KB12M0 be used as a direct replacement for RC12JB12M0?

A: Yes, the RC12KB12M0 is mechanically and electrically compatible for direct substitution. Both parts share identical resistance values, power ratings, package dimensions, and operating temperature ranges. The primary difference is tolerance specification (±10% versus ±5%).

Q: What is the significance of the tolerance difference between these parts?

A: The RC12JB12M0 offers ±5% tolerance, while the RC12KB12M0 offers ±10% tolerance. This means the RC12KB12M0 has a wider acceptable resistance range. Applications requiring precise resistance values should evaluate whether the ±10% tolerance meets circuit specifications before substitution.

Q: Are both parts available in the same packaging?

A: Yes. Both the RC12JB12M0 and RC12KB12M0 are supplied in axial through-hole packages with identical physical dimensions (0.142" Dia x 0.374" L / 3.60mm x 9.50mm). The RC12JB12M0 is supplied in standard packaging, while the RC12KB12M0 is supplied in bulk packaging.

Q: Do these parts meet current regulatory requirements?

A: Yes. Both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and use.

Q: Why is the RC12JB12M0 listed as obsolete?

A: The RC12JB12M0 has been discontinued by the manufacturer. The RC12KB12M0 remains in active production and serves as the current equivalent for new designs and ongoing production requirements.