RC12JB18M0 Equivalent & Substitute Parts

Part Overview

The RC12JB18M0 is an 18 MOhms ±5% 0.5W axial through-hole 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 identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

RC12JB18M0

Stackpole Electronics IncIn Stock: 1289RC12JB18M0 Datasheet

Current PartRFQ

RC12KB18M0

Stackpole Electronics IncIn Stock: 931RC12KB18M0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC12JB18M0 is determined by the following critical parameters:

• Resistance Value: Must be 18 MOhms
• Power Rating: Must be 0.5W (1/2W)
• Package Type: Must be Axial configuration
• Composition: Must be Carbon Composition
• Physical Dimensions: Must match 0.142" Dia × 0.374" L (3.60mm × 9.50mm)
• Operating Temperature Range: Must support -55°C to 125°C
• Compliance: Must maintain ROHS3 compliance

The RC12KB18M0 qualifies as a substitute part. While it specifies a wider tolerance of ±10% compared to the original ±5%, all other critical parameters remain identical, including resistance value, power rating, package configuration, physical dimensions, temperature range, and regulatory compliance status.

Parameter Comparison

Engineering Selection Recommendations

The RC12KB18M0 is the manufacturer-recommended substitute for the obsolete RC12JB18M0. Both parts are manufactured by Stackpole Electronics Inc and maintain identical electrical and mechanical specifications with the exception of tolerance rating. The substitute part carries Active product status, ensuring continued availability and supply chain support.

Both components maintain ROHS3 compliance, REACH unaffected status, and identical EAR99 export classification. The physical form factor, termination configuration, and thermal operating range are identical, enabling direct replacement in existing circuit designs without modification to PCB layouts or mechanical assemblies.

The tolerance difference (±10% versus ±5%) represents the primary technical distinction. Applications requiring the tighter ±5% tolerance specification of the original part should evaluate circuit performance requirements before implementing the substitute.

Frequently Asked Questions (FAQ)

Q: Can RC12KB18M0 be used as a direct replacement for RC12JB18M0?

A: Yes. Both parts share identical resistance value (18 MOhms), power rating (0.5W), package configuration (Axial), physical dimensions (0.142" Dia × 0.374" L), and operating temperature range (-55°C to 125°C). The substitute is manufactured by the same supplier and maintains equivalent compliance certifications.

Q: What is the difference between these two parts?

A: The primary difference is tolerance specification. RC12JB18M0 specifies ±5% tolerance, while RC12KB18M0 specifies ±10% tolerance. All other electrical and mechanical parameters are identical.

Q: Will the substitute part fit in the same PCB footprint?

A: Yes. Both parts are axial through-hole resistors with identical physical dimensions (0.142" Dia × 0.374" L / 3.60mm × 9.50mm). No PCB layout modifications are required.

Q: Are both parts RoHS compliant?

A: Yes. Both RC12JB18M0 and RC12KB18M0 are ROHS3 compliant and REACH unaffected.

Q: Why is the original part listed as obsolete?

A: RC12JB18M0 is classified as obsolete by the manufacturer. RC12KB18M0 maintains Active product status and is the recommended alternative for new designs and ongoing system support.