RC1KB1K30 Equivalent & Substitute Parts

Part Overview

The RC1KB1K30 is a 1.3 kOhms ±10% 1W 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 product is currently obsolete, making identification of suitable substitute components essential for ongoing maintenance, repair, and legacy system support. Equivalent parts must maintain the same resistance value, power rating, and axial package configuration while meeting applicable compliance standards.

Substiute Parts

RC1KB1K30

Stackpole Electronics IncIn Stock: 1211RC1KB1K30 Datasheet

Current PartRFQ

ASRM1JA1K30

Stackpole Electronics IncIn Stock: 734ASRM1JA1K30 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC1KB1K30 is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 1.3 kOhms
• Power rating: 1W
• Package configuration: Axial through-hole
• Number of terminations: 2
• Compliance certifications: ROHS3 Compliant, REACH Unaffected

Allowable Variations:

• Tolerance: The RC1KB1K30 specifies ±10%. Substitute parts with tighter tolerance (±5%) are acceptable as they provide equal or superior accuracy.
• Composition: While the main part uses carbon composition, metal film composition is acceptable provided all other electrical and mechanical parameters are met.
• Operating temperature range: Substitute parts with extended temperature ranges (-55°C ~ 155°C) are acceptable.
• Temperature coefficient: This parameter is not specified for the main part and does not restrict substitution.

The ASRM1JA1K30 meets all mandatory parameters and represents a direct functional substitute with improved tolerance specification.

Parameter Comparison

Engineering Selection Recommendations

The ASRM1JA1K30 is a direct substitute for the obsolete RC1KB1K30. Both components are manufactured by Stackpole Electronics Inc and maintain identical resistance values, power ratings, and axial package configurations. The substitute part offers the following advantages:

• Active Product Status: The ASRM1JA1K30 is currently in active production, ensuring long-term availability and supply chain continuity.
• Improved Tolerance: The ±5% tolerance specification provides superior accuracy compared to the ±10% tolerance of the main part.
• Extended Temperature Range: Operating temperature capability extends to 155°C, providing additional thermal margin for demanding applications.
• Compliance Certification: Both parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements.
• Compact Dimensions: The substitute part features reduced physical dimensions (4.00mm x 11.00mm versus 5.70mm x 14.30mm), which may provide layout advantages in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the ASRM1JA1K30 be used as a direct replacement for the RC1KB1K30?

A: Yes. Both components share identical resistance values (1.3 kOhms), power ratings (1W), and axial package configurations. The substitute part meets all mandatory electrical and mechanical parameters required for functional equivalence.

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

A: Carbon composition and metal film are different resistor construction technologies. Metal film resistors typically offer tighter tolerance, lower noise, and better temperature stability. The ASRM1JA1K30 metal film construction provides ±5% tolerance versus the RC1KB1K30's ±10% tolerance.

Q: Will the smaller physical dimensions of the ASRM1JA1K30 affect circuit board layout?

A: The ASRM1JA1K30 is physically smaller (4.00mm x 11.00mm) than the RC1KB1K30 (5.70mm x 14.30mm). Both maintain standard axial through-hole termination. Verify that the reduced dimensions are compatible with existing circuit board hole spacing and component placement before implementation.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the RC1KB1K30 and ASRM1JA1K30 are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Why is the RC1KB1K30 listed as obsolete?

A: The RC1KB1K30 has been discontinued by the manufacturer. The ASRM1JA1K30 represents the active equivalent product from Stackpole Electronics Inc, ensuring continued availability and support for applications requiring 1.3 kOhms 1W axial resistors.