KC1901N Equivalent & Substitute Parts

Part Overview

The KC1901N is a rotary DIP switch manufactured by E-Switch, configured as a single-pole, nine-throw (SP9T) switch with a shaft actuator. It is rated for 100mA at 16VDC and designed for through-hole mounting with PC pin termination. The KC1901N is classified as obsolete, making identification of active equivalent parts essential for ongoing production and maintenance applications. Substitute parts must maintain identical electrical ratings, mechanical configuration, and mounting characteristics to ensure direct compatibility in existing circuit designs.

Substiute Parts

KC1901N

E-SwitchIn Stock: 1143KC1901N Datasheet

Current PartRFQ

KC1901A

E-SwitchIn Stock: 2450KC1901A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KC1901N is determined by strict equivalence across all electrical and mechanical parameters. The substitute part must maintain:

• Identical circuit configuration (SP9T)
• Identical number of positions (9)
• Identical current and voltage ratings (100mA, 16VDC)
• Identical actuator type and level (Rotary with Shaft, Raised)
• Identical mounting and termination (Through Hole, PC Pin)
• Identical pitch and physical dimensions (0.100" pitch, 0.386" height, 0.488" length)
• Identical contact material and finish (Copper Alloy, Silver)
• Identical mechanical and electrical life ratings (10,000 Cycles each)
• Compliance with RoHS3 and MSL 1 requirements

The KC1901A meets all these criteria and is classified as an active product from the same manufacturer series (KC1901), making it a direct functional and physical equivalent.

Parameter Comparison

Engineering Selection Recommendations

The KC1901A is the manufacturer-recommended substitute for the obsolete KC1901N. Both parts are manufactured by E-Switch and belong to the same KC1901 series. The KC1901A maintains active product status, ensuring continued availability and supply chain reliability. All electrical specifications, mechanical dimensions, contact materials, and regulatory compliance certifications are identical between the two parts. The KC1901A is suitable for direct replacement in applications currently using the KC1901N without circuit redesign or board layout modification.

Frequently Asked Questions (FAQ)

Q: Can the KC1901A be used as a direct replacement for the KC1901N?

A: Yes. The KC1901A is electrically and mechanically equivalent to the KC1901N. All parameters including circuit configuration, ratings, dimensions, and compliance certifications are identical. No circuit or layout changes are required.

Q: What is the primary difference between the KC1901N and KC1901A?

A: The KC1901N is classified as obsolete, while the KC1901A is an active product. Both parts are from the same manufacturer series and share identical specifications. The KC1901A is the recommended active equivalent for ongoing production.

Q: Are there any packaging differences between these parts?

A: The KC1901N is supplied in standard packaging, while the KC1901A is supplied in bulk packaging. This difference does not affect electrical or mechanical compatibility.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the KC1901N and KC1901A are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8536.50.9065.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by equivalence in circuit configuration (SP9T), number of positions (9), current rating (100mA), voltage rating (16VDC), actuator type (Rotary with Shaft), mounting type (Through Hole), termination style (PC Pin), pitch (0.100"), physical dimensions, contact material and finish, and mechanical/electrical life ratings.