KUSBEX-ASFS2N-B-1 USB-A Stacked Receptacle Connector Equivalent & Substitute Parts

Part Overview

The KUSBEX-ASFS2N-B-1 is a USB-A stacked receptacle connector manufactured by Kycon, Inc., designed for through-hole, right-angle mounting applications. This connector features 8 positions, dual ports, and is rated for 1.5A at 30V with 1500 mating cycles. The part is active in production and RoHS compliant. Equivalent and substitute parts are identified based on matching electrical specifications, mechanical form factor, and environmental operating parameters to ensure direct board-level compatibility.

Key Parameters

Parameter	Value
Connector Type	USB-A (USB TYPE-A), Stacked
Number of Contacts	8
Gender	Receptacle
Mounting Type	Through Hole, Right Angle
Mounting Feature	Horizontal
Termination	Solder
Number of Ports	2
Current Rating	1.5A
Voltage - Rated	30V
Mating Cycles	1500
Shielding	Shielded
Contact Finish	Gold
Material Flammability Rating	UL94 V-0
Operating Temperature Range	-55°C ~ 85°C
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitute parts are grouped into two categories based on allowed parameter variations:

Category A: Kycon Series Equivalents (KUSBX-AS2N-B, KUSBX-AS2N-B30, KUSBX-AS2N-W)

These parts maintain identical mechanical and electrical form factors with the following allowed variations:

Operating temperature range: -40°C ~ 85°C (narrower than main part)
Current rating: 1A (lower than main part's 1.5A)
Voltage rating: 30VAC (equivalent to main part's 30V)
Insulation color: Black or White (cosmetic variation)
RoHS status: ROHS3 Compliant (equivalent compliance level)

Category B: Molex Series Equivalents (0672983090, 0672983091, 0672984090, 0672984091)

These parts provide functional equivalence with the following allowed variations:

Operating temperature range: 0°C ~ 50°C (narrower than main part)
Current rating: 1.5A (matches main part)
Voltage rating: 30VDC (equivalent to main part's 30V)
Mating cycles: Not specified (main part specifies 1500)
Shell/Shielding material: Brass, Steel (SUS 304) (different material composition)
Insulation color: Black or White (cosmetic variation)

Category C: Würth Elektronik Series Equivalents (614008246521, 61400826021)

These parts provide functional equivalence with the following allowed variations:

Specifications: USB 2.0 (additional specification detail)
Operating temperature range: -40°C ~ 105°C (wider than main part)
Number of ports: 1 or 2 (main part specifies 2)
Current rating: 1.5A (matches main part)
Voltage rating: 30VAC or 30V (equivalent to main part)
Mating cycles: 1500 (matches main part)
Insulation color: Black or White (cosmetic variation)

Category D: Mill-Max Manufacturing Equivalent (896-43-008-90-000000)

This part provides functional equivalence with the following allowed variations:

Specifications: USB 2.0 (additional specification detail)
Operating temperature range: Not specified
Number of ports: 2 (matches main part)
Current rating: 1A (lower than main part's 1.5A)
Voltage rating: 30VAC (equivalent to main part's 30V)
Mating cycles: 1500 (matches main part)
Shell/Shielding material: Steel, Stainless (different material composition)
Insulation color: Not specified

Parameter Comparison

Manufacturer Part Number	Manufacturer	Connector Type	Contacts	Ports	Current Rating (A)	Voltage	Operating Temp (°C)	Mating Cycles	Contact Finish	Flammability	RoHS Status
KUSBEX-ASFS2N-B-1	Kycon, Inc.	USB-A Stacked	8	2	1.5	30V	-55 ~ 85	1500	Gold	UL94 V-0	RoHS Compliant
KUSBX-AS2N-B	Kycon, Inc.	USB-A Stacked	8	2	1	30VAC	-40 ~ 85	1500	Gold	UL94 V-0	ROHS3 Compliant
KUSBX-AS2N-B30	Kycon, Inc.	USB-A Stacked	8	2	1	30VAC	-40 ~ 85	1500	Gold	UL94 V-0	ROHS3 Compliant
KUSBX-AS2N-W	Kycon, Inc.	USB-A Stacked	8	2	1	30VAC	-40 ~ 85	1500	Gold	UL94 V-0	ROHS3 Compliant
0672983090	Molex	USB-A Stacked	8	2	1.5	30VDC	0 ~ 50	—	Gold	UL94 V-0	ROHS3 Compliant
0672983091	Molex	USB-A Stacked	8	2	1.5	30VDC	0 ~ 50	—	Gold	UL94 V-0	ROHS3 Compliant
0672984090	Molex	USB-A Stacked	8	2	1.5	30VDC	0 ~ 50	—	Gold	UL94 V-0	ROHS3 Compliant
0672984091	Molex	USB-A Stacked	8	2	1.5	30VDC	0 ~ 50	—	Gold	UL94 V-0	ROHS3 Compliant
614008246521	Würth Elektronik	USB-A Stacked	8	1	1.5	30VAC	-40 ~ 105	1500	Gold	UL94 V-0	ROHS3 Compliant
61400826021	Würth Elektronik	USB-A Stacked	8	2	1.5	30V	-40 ~ 105	1500	Gold	UL94 V-0	ROHS3 Compliant
896-43-008-90-000000	Mill-Max Manufacturing Corp.	USB-A Stacked	8	2	1	30VAC	—	1500	Gold	UL94 V-0	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility)

The Molex series (0672983090, 0672983091, 0672984090, 0672984091) and Würth Elektronik part 61400826021 maintain the full 1.5A current rating and dual-port configuration of the main part. These are suitable for applications where the operating temperature range 0°C ~ 50°C or -40°C ~ 105°C is acceptable. All substitute parts maintain UL94 V-0 flammability rating and ROHS3 compliance.

Secondary Substitutes (Reduced Current Rating)

The Kycon series (KUSBX-AS2N-B, KUSBX-AS2N-B30, KUSBX-AS2N-W) and Mill-Max part 896-43-008-90-000000 are rated for 1A maximum current. These are suitable for applications where the design current requirement does not exceed 1A. The Kycon parts maintain the narrower operating temperature range of -40°C ~ 85°C.

Limited Substitutes (Single Port Configuration)

The Würth Elektronik part 614008246521 features a single port instead of dual ports. This part is suitable only for applications where a single USB-A port is required.

All substitute parts are active in production status and maintain RoHS compliance. Selection should be based on application-specific current requirements, operating temperature constraints, and port configuration needs.

Frequently Asked Questions (FAQ)

Q: Can KUSBX-AS2N-B be used as a direct replacement for KUSBEX-ASFS2N-B-1?

A: KUSBX-AS2N-B is mechanically and electrically compatible for applications where the maximum current requirement does not exceed 1A and the operating temperature range -40°C ~ 85°C is acceptable. The main part is rated for 1.5A, so substitution is valid only if the application design current is 1A or lower.

Q: What is the difference between the Molex parts 0672983090, 0672983091, 0672984090, and 0672984091?

A: These parts differ only in insulation color. Parts 0672983090 and 0672983091 have black insulation, while 0672984090 and 0672984091 have white insulation. All other electrical and mechanical specifications are identical.

Q: Are the Würth Elektronik parts suitable for the full operating temperature range of the main part?

A: The Würth Elektronik parts (614008246521 and 61400826021) are rated for -40°C ~ 105°C, which exceeds the main part's -55°C ~ 85°C range at the lower end. For applications requiring operation below -40°C, the main part or Kycon equivalents are required.

Q: Why does the Würth Elektronik part 614008246521 have only one port instead of two?

A: Part 614008246521 is a single-port configuration variant. For dual-port applications, use part 61400826021 instead.

Q: Are all substitute parts RoHS compliant?

A: Yes. The main part is RoHS Compliant, and all substitute parts are ROHS3 Compliant, which represents equivalent environmental compliance.

Q: What is the significance of the mating cycle rating?

A: The mating cycle rating indicates the number of connect/disconnect cycles the connector is rated for. The main part and most substitutes are rated for 1500 cycles. The Molex parts do not specify a mating cycle rating in the provided data.

Q: Can I use a substitute part with a lower current rating if my application requires 1.5A?

A: No. If your application requires 1.5A, you must use parts rated for 1.5A or higher. The Molex series (0672983090, 0672983091, 0672984090, 0672984091) and Würth Elektronik part 61400826021 maintain the 1.5A rating. The Kycon series and Mill-Max part are rated for 1A maximum and are not suitable for 1.5A applications.

Q: What packaging format are these parts supplied in?

A: All parts listed are supplied in Tray packaging.

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