K66XHT-B44S-N Equivalent & Substitute Parts

Part Overview

The K66XHT-B44S-N is a 44-position D-Sub high-density receptacle connector manufactured by Kycon, Inc. This through-hole, right-angle solder-terminated connector features female sockets with a 3-row configuration (Shell Size 3, DB/B high-density layout). The connector is designed for signal applications requiring robust mechanical and electrical performance in industrial and commercial environments. The part is currently active in production with 682 units in stock. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the connector interface, allowing for design flexibility and supply chain optimization.

Substiute Parts

K66XHT-B44S-N

Kycon, Inc.In Stock: 700K66XHT-B44S-N Datasheet

Current PartRFQ

K66X-B44S-N

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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The K66X-B44S-N is identified as a parametric equivalent to the K66XHT-B44S-N based on the following substitution criteria:

Matching Parameters (Substitution Basis):

• Connector style: D-Sub, High Density
• Connector type: Receptacle, Female Sockets
• Number of positions: 44
• Number of rows: 3
• Shell size and layout: 3 (DB, B) High Density
• Mounting type: Through Hole, Right Angle
• Termination method: Solder
• Current rating: 1.5A
• Shell material and finish: Steel, Nickel Plated
• Contact finish: Gold, Flash Thickness
• Dielectric material: Polybutylene Terephthalate (PBT), Glass Filled
• Flange feature: Housing/Shell (4-40)
• Features: Board Lock
• Moisture Sensitivity Level: 1 (Unlimited)

Differing Parameters (Design Considerations):

• Voltage rating: 30V (K66XHT-B44S-N) versus 29VAC (K66X-B44S-N)
• Operating temperature range: -55°C ~ 105°C (K66XHT-B44S-N) versus -55°C ~ 75°C (K66X-B44S-N)
• RoHS status: RoHS Compliant (K66XHT-B44S-N) versus ROHS3 Compliant (K66X-B44S-N)
• Series designation: K66XHT (Main) versus K66X (Substitute)

Parameter Comparison

Engineering Selection Recommendations

Both the K66XHT-B44S-N and K66X-B44S-N are active production parts manufactured by Kycon, Inc., with identical mechanical and electrical interface specifications for 44-position D-Sub high-density receptacle applications. Selection between these parts depends on application-specific requirements:

K66XHT-B44S-N Selection Criteria:

• Applications requiring 30V DC voltage rating
• Operating environments with sustained temperatures up to 105°C
• Designs requiring RoHS Compliant certification status
• When higher temperature performance is a design constraint

K66X-B44S-N Selection Criteria:

• Applications operating at 29VAC voltage specification
• Operating environments with maximum sustained temperatures to 75°C
• Designs requiring ROHS3 Compliant certification status
• When higher inventory availability is advantageous (1081 units versus 682 units)

Both connectors maintain identical mechanical compatibility, pin configuration, mounting orientation, and contact performance characteristics. The voltage rating and operating temperature range represent the primary electrical performance differentiators. RoHS compliance status differs between the two parts, reflecting different regulatory certification timelines. Selection should be based on the specific voltage and temperature requirements of the target application.

Frequently Asked Questions (FAQ)

Q: Can K66X-B44S-N be used in place of K66XHT-B44S-N in all applications?

A: Mechanical and electrical interface compatibility is maintained. However, the K66X-B44S-N has a lower maximum operating temperature (75°C versus 105°C) and a different voltage rating specification (29VAC versus 30V DC). Substitution is valid only when the application voltage and operating temperature requirements fall within the K66X-B44S-N specifications.

Q: What is the difference between RoHS Compliant and ROHS3 Compliant status?

A: Both certifications indicate compliance with Restriction of Hazardous Substances regulations. RoHS Compliant refers to the original RoHS Directive, while ROHS3 Compliant refers to the updated RoHS Directive 2011/65/EU. Both parts meet hazardous substance restrictions; the designation reflects the regulatory framework under which compliance was certified.

Q: Are the physical dimensions and mounting footprints identical?

A: Yes. Both connectors share identical shell size (3, DB/B high-density), mounting type (through-hole, right-angle), flange feature (housing/shell with 4-40 mounting), and board lock mechanism. PCB layout and mechanical mounting are fully interchangeable.

Q: What is the significance of the series designation difference (K66XHT versus K66X)?

A: The series designation reflects the product line classification within Kycon's connector portfolio. The K66XHT and K66X series share the same mechanical platform and interface specifications but differ in voltage rating and temperature range specifications. Both are active production series.

Q: How do the contact specifications compare?

A: Both connectors use phosphor bronze contacts with gold flash plating at identical thickness. Contact material, finish type, and electrical performance characteristics are identical. Current rating is 1.5A for both parts.

Q: Is there a packaging difference between these parts?

A: Both parts are supplied in tray packaging. Inventory availability differs (682 units for K66XHT-B44S-N versus 1081 units for K66X-B44S-N), but packaging format and handling specifications are identical.