K21MC7-P07LFD0-397S Equivalent & Substitute Parts

Part Overview

The K21MC7-P07LFD0-397S is a 7-position circular connector receptacle with female sockets, manufactured by ODU as part of the MEDI-SNAP® series. This component features solder cup termination, gold-plated contacts, and polysulfone shell construction rated for industrial, medical, military, and testing equipment applications. The part maintains active product status with 1075 units in current inventory. Substitute parts are identified to provide alternative sourcing options when the primary part number is unavailable or when specific cable opening requirements differ.

Key Parameters

Parameter	Value
Manufacturer Part Number	K21MC7-P07LFD0-397S
Manufacturer	ODU
Series	ODU MEDI-SNAP®
Connector Type	Receptacle, Female Sockets
Number of Positions	7
Shell Size - Insert	1
Termination	Solder Cup
Fastening Type	Push-Pull, Detent Lock
Shell Material	Polysulfone (PSU)
Contact Finish - Mating	Gold
Cable Opening	0.106" ~ 0.154" (2.70mm ~ 3.90mm)
Operating Temperature	-50°C ~ 120°C
Current Rating	3.9A
Ingress Protection	IP50 - Dust Protected
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the K21MC7-P07LFD0-397S are qualified based on the following criteria:

Core Compatibility Parameters (Must Match):

Manufacturer: ODU
Series: MEDI-SNAP®
Connector Type: Receptacle, Female Sockets
Number of Positions: 7
Shell Size - Insert: 1
Termination: Solder Cup
Fastening Type: Push-Pull, Detent Lock
Shell Material: Polysulfone (PSU)
Contact Finish - Mating: Gold
Operating Temperature: -50°C ~ 120°C
Ingress Protection: IP50 - Dust Protected
RoHS Status: ROHS3 Compliant

Variable Parameters (Allowed to Differ):

Cable Opening diameter range
Current Rating (within acceptable limits for the application)
Orientation designation

The three substitute parts (K21M07-P07LFD0-397S, K21M07-P07LFD0-527S, K21M07-P07LFD0-657S) maintain all core compatibility parameters while offering different cable opening specifications to accommodate various cable gauges and assembly requirements.

Parameter Comparison

Parameter	K21MC7-P07LFD0-397S (Main)	K21M07-P07LFD0-397S	K21M07-P07LFD0-527S	K21M07-P07LFD0-657S
Manufacturer	ODU	ODU	ODU	ODU
Series	MEDI-SNAP®	MEDI-SNAP®	MEDI-SNAP®	MEDI-SNAP®
Connector Type	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets
Number of Positions	7	7	7	7
Shell Size - Insert	1	1	1	1
Termination	Solder Cup	Solder Cup	Solder Cup	Solder Cup
Fastening Type	Push-Pull, Detent Lock	Push-Pull, Detent Lock	Push-Pull, Detent Lock	Push-Pull, Detent Lock
Shell Material	Polysulfone (PSU)	Polysulfone (PSU)	Polysulfone (PSU)	Polysulfone (PSU)
Contact Finish - Mating	Gold	Gold	Gold	Gold
Cable Opening	0.106" ~ 0.154" (2.70mm ~ 3.90mm)	0.106" ~ 0.154" (2.70mm ~ 3.90mm)	0.157" ~ 0.205" (4.00mm ~ 5.20mm)	0.209" ~ 0.256" (5.30mm ~ 6.50mm)
Current Rating	3.9A	4.55A	4.55A	4.55A
Operating Temperature	-50°C ~ 120°C	-50°C ~ 120°C	-50°C ~ 120°C	-50°C ~ 120°C
Ingress Protection	IP50 - Dust Protected	IP50 - Dust Protected	IP50 - Dust Protected	IP50 - Dust Protected
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active
Inventory	1075 Pcs	1023 Pcs	1069 Pcs	659 Pcs

Engineering Selection Recommendations

All four parts maintain active product status and ROHS3 compliance, qualifying them for equivalent use in applications requiring 7-position circular connectors with solder cup termination within the MEDI-SNAP® series.

K21MC7-P07LFD0-397S (Primary): Select when cable opening specification of 0.106" ~ 0.154" (2.70mm ~ 3.90mm) is required and current rating of 3.9A is sufficient for the application.

K21M07-P07LFD0-397S: Direct substitute with identical cable opening range. Provides higher current rating of 4.55A. Select when increased current capacity is beneficial or when primary part availability is limited.

K21M07-P07LFD0-527S: Select when cable opening specification of 0.157" ~ 0.205" (4.00mm ~ 5.20mm) is required to accommodate larger cable gauges. Current rating of 4.55A applies.

K21M07-P07LFD0-657S: Select when cable opening specification of 0.209" ~ 0.256" (5.30mm ~ 6.50mm) is required for the largest cable diameter range. Current rating of 4.55A applies.

Frequently Asked Questions (FAQ)

Q: Can K21M07-P07LFD0-397S be used as a direct replacement for K21MC7-P07LFD0-397S?

A: Yes. Both parts share identical cable opening specifications (0.106" ~ 0.154"), connector type, position count, termination method, and shell material. The K21M07-P07LFD0-397S provides a higher current rating of 4.55A compared to 3.9A.

Q: What determines which substitute part to select?

A: Cable opening diameter is the primary selection criterion. Choose the part whose cable opening range accommodates your specific cable gauge. All substitutes maintain identical connector type, position count, termination, and material specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four parts listed carry ROHS3 compliance certification and maintain active product status.

Q: Can parts with different cable opening ranges be intermixed in the same assembly?

A: No. Cable opening specifications are fixed per part number. Select the appropriate part number based on your cable gauge requirements before assembly.

Q: What is the difference between the three substitute part numbers?

A: The three K21M07-P07LFD0 variants differ only in cable opening diameter range and are designated by the final suffix (397S, 527S, 657S). All other electrical and mechanical parameters remain constant across the series.

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