RC1KB1K80 Equivalent & Substitute Parts

Part Overview

The RC1KB1K80 is a 1.8 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 design continuity in applications requiring equivalent electrical and mechanical performance.

Substiute Parts

RC1KB1K80

Stackpole Electronics IncIn Stock: 1184RC1KB1K80 Datasheet

Current PartRFQ

ASRM1JA1K80

Stackpole Electronics IncIn Stock: 1194ASRM1JA1K80 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the RC1KB1K80 is determined by the following critical parameters:

• Resistance value: 1.8 kOhms (exact match required)
• Power rating: 1W (minimum requirement)
• Package type: Axial (mechanical and electrical compatibility)
• Operating temperature range: Must encompass or exceed -55°C ~ 125°C
• RoHS compliance: ROHS3 Compliant (regulatory requirement)
• Pulse withstanding capability: Required for application continuity

The ASRM1JA1K80 meets all substitution criteria. While it employs metal film composition instead of carbon composition, it maintains identical resistance, power rating, axial package configuration, and pulse-withstanding characteristics. The substitute part offers improved tolerance (±5% versus ±10%) and extended operating temperature range (-55°C ~ 155°C), providing enhanced performance margins within the same mechanical envelope.

Parameter Comparison

Engineering Selection Recommendations

The ASRM1JA1K80 is the qualified substitute for the obsolete RC1KB1K80. Both components are manufactured by Stackpole Electronics Inc and maintain ROHS3 compliance. The substitute part is currently in active production status with confirmed inventory availability (1130 pcs), ensuring supply chain continuity.

The ASRM1JA1K80 provides functional equivalence with measurable improvements: tighter tolerance specification (±5% versus ±10%), extended maximum operating temperature (155°C versus 125°C), and flame retardant coating. The axial package configuration remains identical in electrical termination and mechanical mounting, with the substitute featuring a more compact physical envelope (4.00mm x 11.00mm versus 5.70mm x 14.30mm).

Both parts maintain pulse-withstanding capability and are suitable for direct substitution in applications where the RC1KB1K80 was originally specified.

Frequently Asked Questions (FAQ)

Q: Can the ASRM1JA1K80 be used as a direct replacement for the RC1KB1K80?

A: Yes. Both components share identical resistance value (1.8 kOhms), power rating (1W), axial package configuration, and pulse-withstanding characteristics. The substitute meets all electrical and mechanical requirements for direct substitution.

Q: What is the difference in composition between these parts?

A: The RC1KB1K80 uses carbon composition construction, while the ASRM1JA1K80 employs metal film construction. Both compositions are suitable for 1W axial resistors and maintain equivalent electrical performance at the specified resistance and tolerance values.

Q: Does the smaller physical size of the ASRM1JA1K80 affect compatibility?

A: The ASRM1JA1K80 is physically smaller (4.00mm x 11.00mm versus 5.70mm x 14.30mm) but maintains the same axial package type and electrical termination. Mechanical fit must be verified in applications with space constraints, though the smaller size typically presents no compatibility issues.

Q: Are both parts RoHS compliant?

A: Yes. Both the RC1KB1K80 and ASRM1JA1K80 are ROHS3 compliant, meeting current regulatory requirements for electronic component manufacturing and use.

Q: What is the tolerance difference and does it matter?

A: The RC1KB1K80 has ±10% tolerance, while the ASRM1JA1K80 has ±5% tolerance. The tighter tolerance of the substitute part provides improved accuracy and is suitable for applications originally designed around the ±10% specification.