L77HDEG15SC309 D-Sub High Density 15 Position Receptacle - Equivalent and Substitute Parts

Part Overview

The L77HDEG15SC309 is a 15-position D-Sub high-density receptacle connector manufactured by Amphenol ICC, featuring solder cup termination and female socket contacts. This free-hanging in-line connector is rated for 3A at 250V with an operating temperature range of -55°C to 155°C. The connector is in active product status with RoHS compliance and includes 886 units in current inventory.

Substitute parts are necessary when the original component becomes obsolete, when procurement lead times are extended, or when alternative mounting configurations are required for specific application constraints. The parts listed below maintain functional compatibility through equivalent connector geometry, position count, and core electrical specifications.

Key Parameters

Parameter	L77HDEG15SC309
Connector Type	D-Sub, High Density Receptacle, Female Sockets
Position Count	15
Shell Size	1 (DE, E) High Density
Mounting Type	Free Hanging (In-Line)
Termination	Solder Cup
Current Rating	3A
Voltage Rating	250V
Operating Temperature	-55°C to 155°C
Shell Material/Finish	Steel, Tin Plated
Contact Finish	Gold, 30.0µin (0.76µm)
Contact Material	Phosphor Bronze
Dielectric Material	Thermoplastic, Glass Filled
Material Flammability	UL94 V-0
RoHS Status	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Electrical and mechanical substitution for the L77HDEG15SC309 is determined by the following parameters:

Core Compatibility Parameters:

15-position D-Sub high-density connector geometry
Receptacle type with female socket contacts
Solder cup termination method
3-row contact layout (Shell Size 1 / DE, E configuration)
Material flammability rating UL94 V-0
Moisture sensitivity level classification

Acceptable Variations:

Mounting type: Free-hanging (in-line) substitutes may use panel mount alternatives when mechanical design accommodates
Current rating: Substitutes rated for 3A or higher are electrically compatible
Operating temperature: Substitutes with equal or greater temperature range are acceptable
Shell material finish: Tin-plated or nickel-plated finishes are interchangeable
Contact material: Phosphor bronze or brass contacts are substitutable
Dielectric material: Thermoplastic or polybutylene terephthalate (PBT) materials satisfy flammability requirements

Substitute parts are grouped into two manufacturer categories: NorComp Inc. standard series (180 and 180-M lines) which provide direct electrical substitutes with panel mount options and enhanced current ratings.

Parameter Comparison

Parameter	L77HDEG15SC309	180-015-202L001	180-015-202L021	180-015-203L001	180-015-203L011	180-015-203L021	180-015-203L031	180-M15-203L001	180-M15-203L011	180-M15-203L021	180-M15-203L031
Manufacturer	Amphenol ICC	NorComp Inc.	NorComp Inc.	NorComp Inc.	NorComp Inc.	NorComp Inc.	NorComp Inc.	NorComp Inc.	NorComp Inc.	NorComp Inc.	NorComp Inc.
Position Count	15	15	15	15	15	15	15	15	15	15	15
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
Shell Size	1 (DE, E) High Density	1 (DE, E) High Density	1 (DE, E) High Density	1 (DE, E) High Density	1 (DE, E) High Density	1 (DE, E) High Density	1 (DE, E) High Density	1 (DE, E) High Density	1 (DE, E) High Density	1 (DE, E) High Density	1 (DE, E) High Density
Mounting Type	Free Hanging (In-Line)	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount	Panel Mount
Termination	Solder Cup	Solder Cup	Solder Cup	Solder Cup	Solder Cup	Solder Cup	Solder Cup	Solder Cup	Solder Cup	Solder Cup	Solder Cup
Current Rating (Amps)	3	5	5	5	5	5	5	3	3	3	3
Operating Temperature Range	-55°C to 155°C	-50°C to 100°C	-50°C to 100°C	-50°C to 100°C	-50°C to 100°C	-50°C to 100°C	-50°C to 100°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
Shell Material/Finish	Steel, Tin Plated	Steel, Tin Plated	Steel, Tin Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated	Steel, Nickel Plated
Contact Material	Phosphor Bronze	Brass	Brass	Brass	Brass	Brass	Brass	Copper Alloy	Copper Alloy	Copper Alloy	Copper Alloy
Dielectric Material	Thermoplastic, Glass Filled	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT), Glass Filled	Polybutylene Terephthalate (PBT), Glass Filled	Polybutylene Terephthalate (PBT), Glass Filled	Polybutylene Terephthalate (PBT), Glass Filled
Material Flammability	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	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Obsolete	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Primary Substitutes (Active Status): The 180-M15 series (180-M15-203L001, 180-M15-203L011, 180-M15-203L021, 180-M15-203L031) provides the most direct substitution path for the L77HDEG15SC309. These parts maintain identical current rating (3A), matching temperature range (-55°C to 125°C), and exceed the original part's flammability compliance. All 180-M15 variants are in active production status with full RoHS3 compliance.

Secondary Substitutes (Active Status, Higher Current Rating): The 180-015 series (180-015-203L001, 180-015-203L011, 180-015-203L021, 180-015-203L031) offers rated current of 5A with UL94 V-0 certification and ROHS3 compliance. These parts are in active status and provide elevated current capacity. Operating temperature range is reduced to -50°C to 100°C, requiring evaluation against application thermal requirements.

Obsolete Alternatives: Parts 180-015-202L001 and 180-015-202L021 share electrical compatibility but are in obsolete status. These should be selected only when existing stock availability is critical and new production lead times are unacceptable.

Mounting Configuration Differences: All substitute parts are panel-mount configured, contrasting with the free-hanging (in-line) mounting of the original L77HDEG15SC309. Integration requires mechanical redesign of mounting hardware and printed circuit board layout.

Frequently Asked Questions (FAQ)

Q: What makes these parts substitutable for the L77HDEG15SC309? A: All listed parts maintain the same D-Sub high-density receptacle geometry with 15 signal contacts in a 3-row configuration, identical solder cup termination, and equivalent flammability certification (UL94 V-0). The core electrical and mechanical interfaces remain compatible with mating connectors.

Q: Why do substitute parts have different current ratings? A: The original L77HDEG15SC309 carries a 3A rating. The 180-015 series is designed and tested for 5A operation. Selection between 3A-rated (180-M15 series) and 5A-rated (180-015 series) substitutes depends on actual circuit current requirements rather than connector design incompatibility.

Q: How do operating temperature ranges affect substitution decisions? A: The L77HDEG15SC309 operates from -55°C to 155°C. The 180-M15 series maintains -55°C to 125°C operation, losing 30°C of upper temperature margin. The 180-015 series is limited to -50°C to 100°C, removing 55°C of upper range capability. Applications requiring the full original temperature window must select 180-M15 variants or request temperature-qualified alternatives.

Q: What is the difference between tin-plated and nickel-plated shell finishes? A: The L77HDEG15SC309 features tin plating; most substitutes use nickel plating. Both finishes provide corrosion resistance and solder compatibility. Nickel plating offers enhanced durability in harsh environments. Selection is application-dependent and does not affect electrical function.

Q: Are panel-mount substitutes compatible with free-hanging circuit board applications? A: No. The original L77HDEG15SC309 is designed for free-hanging in-line installation. All listed substitutes are panel-mount configured, requiring mechanical redesign of mounting hardware and potential circuit board layout modification. Mechanical compatibility assessment is mandatory before integration.

Q: What RoHS compliance difference exists between the main part and substitutes? A: The L77HDEG15SC309 is RoHS Compliant. All substitute parts carry ROHS3 Compliant certification, which represents a more recent compliance iteration. ROHS3 compliance is fully backward compatible with RoHS applications.

Q: How do contact material differences (phosphor bronze vs. brass vs. copper alloy) affect performance? A: The original part uses phosphor bronze; substitutes employ brass or copper alloy contacts. All materials provide equivalent electrical conductivity and contact pressure characteristics. Material selection reflects manufacturer design standards and does not impact electrical compatibility with mating plugs.

Q: Which substitutes have longest shelf life status? A: All parts carrying active product status (180-M15 series and 180-015-203L0xx variants) are actively manufactured and have indefinite shelf life availability. Parts 180-015-202L001 and 180-015-202L021 are obsolete and represent legacy inventory with discontinuation risk.

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