RC1KB100R Equivalent & Substitute Parts

Part Overview

The RC1KB100R is a 100 Ohms ±10% 1W axial through-hole 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 product is currently obsolete, making identification of suitable substitute components essential for ongoing system maintenance and repair applications. The RC1KB100R is ROHS3 compliant and suitable for applications requiring robust pulse handling in through-hole configurations.

Substiute Parts

RC1KB100R

Stackpole Electronics IncIn Stock: 892RC1KB100R Datasheet

Current PartRFQ

ASRM1JA100R

Stackpole Electronics IncIn Stock: 1118ASRM1JA100R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC1KB100R is determined by the following critical parameters:

• Resistance Value: 100 Ohms (exact match required)
• Power Rating: 1W (exact match required)
• Package Configuration: Axial through-hole (exact match required)
• Tolerance: ±10% or tighter (±5% acceptable as improvement)
• Operating Temperature Range: Minimum -55°C to 125°C coverage
• Pulse Withstanding Capability: Required feature for equivalent performance
• Regulatory Compliance: ROHS3 compliance maintained

The ASRM1JA100R qualifies as a direct substitute based on matching resistance, power rating, axial package, and pulse withstanding characteristics. The substitute offers improved tolerance (±5% versus ±10%) and extended upper operating temperature (155°C versus 125°C), with metal film composition providing enhanced stability compared to carbon composition.

Parameter Comparison

Engineering Selection Recommendations

The ASRM1JA100R is the qualified substitute for the obsolete RC1KB100R. Both components are manufactured by Stackpole Electronics Inc and maintain ROHS3 compliance. The substitute offers active product status, ensuring long-term availability and supply chain continuity.

The ASRM1JA100R provides superior electrical characteristics with tighter tolerance (±5% versus ±10%) and extended operating temperature range (-55°C to 155°C versus -55°C to 125°C). The metal film composition with flame retardant coating and safety features represents an engineering improvement over the carbon composition design.

Physical dimensions differ between the two components. The ASRM1JA100R is smaller (4.00mm x 11.00mm versus 5.70mm x 14.30mm), which may require PCB layout verification for through-hole mounting compatibility. Both components feature identical axial package configuration and 2-termination design.

Frequently Asked Questions (FAQ)

Q: Can the ASRM1JA100R directly replace the RC1KB100R in existing designs?

A: Yes. Both components share identical resistance value (100 Ohms), power rating (1W), axial package configuration, and pulse withstanding capability. The substitute is electrically compatible. Physical dimensions differ, requiring verification that PCB through-hole spacing accommodates the smaller ASRM1JA100R form factor (4.00mm x 11.00mm versus 5.70mm x 14.30mm).

Q: What is the tolerance difference between these components?

A: The RC1KB100R specifies ±10% tolerance, while the ASRM1JA100R specifies ±5% tolerance. The tighter tolerance of the substitute provides improved resistance accuracy and is fully compatible with applications designed for the original ±10% specification.

Q: Are both components RoHS compliant?

A: Yes. Both the RC1KB100R and ASRM1JA100R are ROHS3 compliant, meeting regulatory requirements for hazardous substance restrictions.

Q: What is the operating temperature difference?

A: The RC1KB100R operates from -55°C to 125°C, while the ASRM1JA100R operates from -55°C to 155°C. The substitute provides extended upper temperature capability, suitable for applications requiring higher thermal performance.

Q: Why is the RC1KB100R obsolete?

A: The RC1KB100R is classified as obsolete by the manufacturer. The ASRM1JA100R is an active product with ongoing manufacturing and supply availability, making it the recommended choice for new designs and replacement applications.

Q: Are there physical mounting considerations?

A: Yes. The ASRM1JA100R is physically smaller (0.157" Dia x 0.433" L) compared to the RC1KB100R (0.224" Dia x 0.563" L). Verify that PCB through-hole spacing and component lead clearances accommodate the substitute's smaller dimensions before implementation.