KF66X-B44S-N D-Sub High Density Receptacle Connector

Part Overview

The KF66X-B44S-N is a 44-position D-Sub high density receptacle connector manufactured by Kycon, Inc. This connector features female sockets with right-angle through-hole mounting and solder termination. The part is currently active in production with 922 units in stock. D-Sub connectors of this configuration are essential in applications requiring high-density signal transmission with robust mechanical retention through board lock features. Substitute parts may be required due to inventory constraints, supply chain considerations, or design revision requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

KF66X-B44S-N

Kycon, Inc.In Stock: 983KF66X-B44S-N Datasheet

Current PartRFQ

K66X-B44S-N

Kycon, Inc.In Stock: 1091K66X-B44S-N Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KF66X-B44S-N is determined by strict equivalence across the following critical parameters:

• Connector type: Receptacle with female sockets
• Position count: 44 positions in 3-row configuration
• Shell size and layout: Size 3 (DB, B) high density
• Mounting orientation: Through hole, right angle
• Termination method: Solder
• Electrical ratings: 1.5A current, 29VAC voltage
• Operating temperature: -55°C to 75°C
• Material specifications: Steel shell with nickel plating, gold-flashed contacts, PBT glass-filled dielectric
• Flammability compliance: UL94 V-0

The K66X-B44S-N meets all these criteria and qualifies as a parametric equivalent substitute. Both parts share identical electrical performance characteristics, mechanical dimensions, and environmental specifications. Differences in RoHS certification status (RoHS3 vs. RoHS Compliant) and REACH applicability do not affect functional interchangeability in applications where the main part is currently deployed.

Parameter Comparison

Engineering Selection Recommendations

Both the KF66X-B44S-N and K66X-B44S-N are active production parts from Kycon, Inc. with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

Inventory Availability: The K66X-B44S-N currently has 1081 units in stock compared to 922 units for the KF66X-B44S-N, providing greater supply availability.

Regulatory Compliance: The KF66X-B44S-N carries RoHS Compliant certification. The K66X-B44S-N carries RoHS3 Compliant certification and is REACH Affected. For applications subject to RoHS3 or REACH requirements, the K66X-B44S-N is the appropriate selection. For applications requiring only RoHS Compliant status, either part is acceptable.

Functional Interchangeability: No functional differences exist between these parts. Both support identical signal transmission, current handling, voltage ratings, and environmental operating conditions. PCB layout, connector mating, and electrical performance are fully compatible.

Frequently Asked Questions (FAQ)

Q: Can K66X-B44S-N be used as a direct replacement for KF66X-B44S-N in existing designs?

A: Yes. Both connectors are mechanically and electrically identical. They share the same 44-position high-density D-Sub configuration, solder termination, current and voltage ratings, and operating temperature range. No design modifications are required for substitution.

Q: What is the difference between the KF66X and K66X series designations?

A: The series designation difference reflects internal Kycon product line organization. Both series connectors in this comparison maintain identical specifications for the 44-position high-density receptacle configuration.

Q: Are there any compliance differences between these parts?

A: The KF66X-B44S-N is RoHS Compliant. The K66X-B44S-N is RoHS3 Compliant and REACH Affected. For applications requiring RoHS3 or REACH compliance, the K66X-B44S-N is the specified choice. Both parts meet UL94 V-0 flammability requirements.

Q: Do these connectors have the same PCB footprint?

A: Yes. Both connectors feature identical through-hole right-angle mounting with 0.350" (8.89mm) backset spacing and board lock features. PCB layouts are fully compatible.

Q: What is the board lock feature?

A: The board lock feature provides mechanical retention of the connector to the PCB, preventing accidental disconnection during handling or vibration exposure.

Q: Are the contact materials identical?

A: Yes. Both connectors use phosphor bronze contacts with gold flash plating, ensuring equivalent electrical conductivity and corrosion resistance.

Q: What environmental conditions do these connectors support?

A: Both connectors operate across -55°C to 75°C temperature range with UL94 V-0 flammability rating, suitable for industrial and commercial applications.