L177TSB25SOL2 D-Sub Receptacle 25 Position Equivalent & Substitute Parts

Part Overview

The L177TSB25SOL2 is a 25 position D-Sub receptacle connector manufactured by Amphenol ICC, featuring female sockets with vertical through-hole solder termination. This connector is classified as Shell Size 3 (DB, B) and is designed for signal applications requiring 5A current capacity at 600V. The part is currently active in production with 985 units in stock.

Equivalent and substitute parts are necessary when the original part becomes unavailable, when alternative packaging formats are required for manufacturing processes, or when design requirements allow for functionally compatible alternatives from different manufacturers that meet the same electrical and mechanical specifications.

Key Parameters

Parameter	L177TSB25SOL2 Specification
Connector Type	Receptacle, Female Sockets
Number of Positions	25
Shell Size, Connector Layout	3 (DB, B)
Mounting Type	Through Hole
Termination	Solder
Current Rating	5A
Voltage Rating	600V
Operating Temperature Range	-55°C to 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the L177TSB25SOL2 is determined by the following mandatory parameters:

Connector type: Receptacle, Female Sockets
Position count: 25 positions
Shell size and layout: 3 (DB, B)
Mounting method: Through Hole
Termination method: Solder
Material flammability: UL94 V-0
Moisture sensitivity: MSL 1 (Unlimited)

Substitute parts must match all these core parameters. Variations in current rating, voltage rating, contact finish thickness, flange feature design, shell material finish, dielectric material composition, and packaging format are permitted when the substitute part meets or exceeds the electrical performance requirements of the original specification.

The following parts meet substitution criteria:

HARTING Series (09663516513, 09663517513, 09663556513): All three HARTING parts share identical core specifications with the main part. Differences include higher current ratings (6.5A vs. 5A), mating side female screwlock flange features, and bulk packaging versus tray packaging.

TE Connectivity AMPLIMITE Series (1-338315-2, 1-5745967-0, 1-5745967-4, 1-5745967-5, 1-5745967-6, 1-745967-4): Six TE Connectivity parts meet core substitution criteria. These parts feature housing/shell or mating side female screwlock flange options, higher current ratings (6A vs. 5A), and lower voltage ratings (125V vs. 600V). Contact material is phosphor bronze instead of copper alloy.

NorComp Inc. 172-025-212R011: This part meets core substitution criteria with panel mount through-hole capability, board side flange feature, and machined contact form. Product status is obsolete.

Parameter Comparison

Parameter	L177TSB25SOL2	09663516513	09663517513	09663556513	1-338315-2	1-5745967-0	1-5745967-4	1-5745967-5	1-5745967-6	1-745967-4	172-025-212R011
Manufacturer	Amphenol ICC	HARTING	HARTING	HARTING	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	TE Connectivity	NorComp Inc.
Connector Type	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets	Receptacle, Female Sockets
Number of Positions	25	25	25	25	25	25	25	25	25	25	25
Shell Size, Connector Layout	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)	3 (DB, B)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Panel Mount, Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Current Rating (Amps)	5A	6.5A	6.5A	6.5A	6A	6A	6A	6A	6A	6A	5A
Voltage Rating	600V	Not Specified	Not Specified	Not Specified	Not Specified	125V	125V	125V	125V	125V	Not Specified
Operating Temperature Range	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-50°C to 100°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0	UL94 V-0
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not Applicable
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Obsolete

Engineering Selection Recommendations

Primary Substitutes (Active Status, Current Compliance):

The HARTING 09663556513 and TE Connectivity 1-5745967-6 are the preferred substitutes. Both parts are active in production, ROHS3 compliant, and maintain full compatibility with the L177TSB25SOL2 core specifications. The HARTING 09663556513 offers higher current capacity (6.5A) with gold-plated contacts and board lock features. The TE Connectivity 1-5745967-6 provides 6A current capacity with ROHS3 compliance and REACH unaffected status.

Secondary Substitutes (Active Status, Compliance Variations):

The TE Connectivity 1-5745967-0, 1-5745967-4, and 1-5745967-5 are active alternatives with RoHS compliance. These parts feature lower voltage ratings (125V vs. 600V) and reduced operating temperature upper limits (105°C vs. 125°C). Selection of these parts requires confirmation that application voltage and temperature requirements do not exceed these specifications.

The HARTING 09663516513 and 09663517513 are active alternatives with ROHS3 compliance and higher current ratings (6.5A). These parts lack specified voltage ratings and require application voltage verification.

The TE Connectivity 1-338315-2 is an active alternative with ROHS3 compliance, board lock features, and 6A current capacity. Operating temperature is limited to 105°C.

Not Recommended:

The NorComp Inc. 172-025-212R011 has obsolete product status and RoHS non-compliant status (1-745967-4). The TE Connectivity 1-745967-4 is RoHS non-compliant and should not be selected for new designs or applications requiring RoHS compliance.

Frequently Asked Questions (FAQ)

Q: Can I substitute a HARTING 09663556513 for the L177TSB25SOL2 in my application?

A: Yes. The HARTING 09663556513 meets all core substitution criteria: 25 position D-Sub receptacle, female sockets, Shell Size 3 (DB, B), through-hole solder termination, UL94 V-0 flammability rating, and MSL 1. The substitute offers higher current capacity (6.5A vs. 5A), gold-plated contacts, and ROHS3 compliance. Verify that your application does not require the 600V voltage rating of the original part, as the HARTING specification does not list a voltage rating.

Q: What is the difference between the TE Connectivity AMPLIMITE HD-20 series parts?

A: The TE Connectivity AMPLIMITE HD-20 series includes parts 1-5745967-0, 1-5745967-4, 1-5745967-5, and 1-5745967-6. All four parts share identical electrical specifications: 6A current, 125V voltage, -55°C to 105°C operating range, and phosphor bronze contacts. Differences exist in flange feature design (housing/shell vs. mating side female screwlock), contact finish thickness (30.0µin, flash, or not specified), and RoHS compliance status. Part 1-5745967-6 is ROHS3 compliant with REACH unaffected status.

Q: Why do some substitute parts have lower voltage ratings than the L177TSB25SOL2?

A: The L177TSB25SOL2 specifies 600V voltage rating. Several substitute parts, particularly the TE Connectivity AMPLIMITE series, specify 125V voltage rating. These lower voltage ratings reflect the design specifications of those connector families. Substitution with lower voltage-rated parts is permissible only when your application voltage requirements do not exceed the substitute part's voltage specification.

Q: What packaging formats are available for these substitute parts?

A: The L177TSB25SOL2 is supplied in tray packaging. Substitute parts are available in multiple packaging formats: tray (1-338315-2, 172-025-212R011), tube (1-5745967-0, 1-5745967-4, 1-5745967-5, 1-5745967-6, 1-745967-4), and bulk (HARTING 09663516513, 09663517513, 09663556513). Packaging format selection depends on manufacturing process requirements and inventory management practices.

Q: Are all substitute parts RoHS compliant?

A: No. Most substitute parts are RoHS or ROHS3 compliant. The exception is TE Connectivity 1-745967-4, which is RoHS non-compliant and should not be selected for applications requiring RoHS compliance. The NorComp Inc. 172-025-212R011 is ROHS3 compliant but has obsolete product status.

Q: Can I use the NorComp 172-025-212R011 as a substitute?

A: The NorComp 172-025-212R011 meets core substitution criteria but has obsolete product status. This part should not be selected for new designs. Existing applications using this part may continue to source remaining inventory, but long-term availability is not assured.

Q: What is the difference between housing/shell and mating side female screwlock flange features?

A: Housing/shell flange features are mounted on the connector shell itself and provide board-level mounting. Mating side female screwlock features are located on the mating interface and provide mechanical locking between mated connectors. The L177TSB25SOL2 uses housing/shell (unthreaded) flange. Substitute parts with mating side female screwlock features (HARTING series, TE Connectivity 1-5745967-4, 1-5745967-5, 1-5745967-6, 1-745967-4) provide additional mechanical retention at the mating interface.

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