Amphenol ICC 77313-124-20 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 77313-124-20 is a vertical rectangular connector header featuring 20 positions with 0.100" (2.54mm) pitch, designed for through-hole board-to-board or cable applications. This component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design and procurement requirements. The connector utilizes male pins with gold-plated mating contacts and tin-plated posts, housed in a thermoplastic insulation body with UL94 V-0 flammability rating.

Key Parameters

Parameter	Value
Manufacturer Part Number	77313-124-20
Manufacturer	Amphenol ICC (FCI)
Category	Rectangular Connectors
Series	BERGSTIK®
Connector Type	Header, Breakaway
Contact Type	Male Pin
Number of Positions	20
Number of Rows	2
Pitch - Mating	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Contact Finish - Mating	Gold or Gold, GXT™
Contact Finish - Post	Tin
Contact Material	Phosphor Bronze
Insulation Material	Thermoplastic
Material Flammability Rating	UL94 V-0
Insulation Color	Black
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the 77313-124-20 is determined by the following critical parameters:

Primary Matching Criteria:

Number of Positions: 20
Number of Rows: 2
Pitch - Mating: 0.100" (2.54mm)
Row Spacing - Mating: 0.100" (2.54mm)
Connector Type: Header
Contact Type: Male Pin
Mounting Type: Through Hole
Termination: Solder
Fastening Type: Push-Pull
Shrouding: Unshrouded
Style: Board to Board or Cable

Secondary Compatibility Parameters:

Contact Shape: Square or Circular (both acceptable for mechanical fit)
Contact Material: Phosphor Bronze or Brass (both suitable for electrical performance)
Insulation Material: Thermoplastic or PBT or PCT/Polyester/Glass Filled (all compatible)
Material Flammability Rating: UL94 V-0 (required)
Moisture Sensitivity Level: 1 (Unlimited)

The substitute parts identified maintain dimensional compatibility through identical pitch spacing and position count. Variations in contact length, insulation height, and contact finish thickness remain within acceptable tolerances for standard board-to-board interconnection applications. Parts with active product status and RoHS compliance are prioritized for new designs.

Parameter Comparison

Parameter	77313-124-20	77313-124-20LF	1-826632-0	450-10-220-00-018101	450-80-220-00-018101	451-80-220-00-003101	892-70-020-10-002101	892-80-020-10-001101	892-80-020-10-002101	BBD-110-G-A
Manufacturer	Amphenol ICC (FCI)	Amphenol ICC (FCI)	TE Connectivity AMP	Preci-Dip	Preci-Dip	Preci-Dip	Preci-Dip	Preci-Dip	Preci-Dip	Samtec Inc.
Number of Positions	20	20	20	20	20	20	20	20	20	20
Number of Rows	2	2	2	2	2	2	2	2	2	2
Pitch - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Row Spacing - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Connector Type	Header, Breakaway	Header, Breakaway	Header, Breakaway	Header	Header	Header	Header	Header	Header	Header
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder	Solder
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Shape	Square	Square	Square	Circular	Circular	Circular	Square	Square	Square	Circular
Contact Material	Phosphor Bronze	Phosphor Bronze	Brass	Brass	Brass	Brass	Brass	Brass	Brass	Not specified
Contact Finish - Mating	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold	Gold	Tin	Tin	Gold	Tin	Tin	Gold
Contact Finish - Post	Tin	Tin	Tin	Gold	Tin	Tin	Gold	Tin	Tin	Nickel
Insulation Material	Thermoplastic	Thermoplastic	Polybutylene Terephthalate (PBT)	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled	Polycyclohexylenedimethylene Terephthalate (PCT), Polyester, Glass Filled	Polyamide (PA), Nylon, Glass Filled	Polyamide (PA), Nylon, Glass Filled	Polyamide (PA), Nylon, Glass Filled	Polyester, Glass Filled
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	Not specified
Insulation Color	Black	Black	Green	Black	Black	Black	Black	Black	Black	Black
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Primary Recommendation: 77313-124-20LF

The 77313-124-20LF is the direct successor to the obsolete 77313-124-20, manufactured by the same supplier (Amphenol ICC). This part maintains identical mechanical and electrical specifications while offering active product status and RoHS compliance. The LF suffix indicates lead-free termination, meeting modern environmental standards. Current rating of 3A per contact and operating temperature range of -65°C to 130°C support standard industrial applications.

Secondary Recommendations for Cross-Manufacturer Substitution:

1-826632-0 (TE Connectivity AMP Connectors): Active AMPMODU Mod II series header with identical 20-position, 2-row, 2.54mm pitch configuration. Offers higher current rating (5A) and ROHS3 compliance. Insulation material is PBT with green color coding. Operating temperature range -65°C to 105°C. Suitable for applications requiring higher current capacity.

Preci-Dip Series (450, 451, 892): Multiple active alternatives from Preci-Dip maintain the core 20-position, 2.54mm pitch specification. These parts feature circular contact geometry and brass contact material with various finish options (gold or tin). Operating temperature range -55°C to 125°C with 3A current rating and 150VDC voltage rating. ROHS3 compliant. Insulation materials include PCT/Polyester/Glass Filled or Polyamide/Nylon/Glass Filled compositions.

BBD-110-G-A (Samtec Inc.): Active BBD series header with identical position and pitch specifications. Features circular contacts with gold mating finish and nickel post finish. Operating temperature -55°C to 125°C. ROHS3 compliant. Insulation material is polyester glass-filled. Suitable for applications where Samtec component qualification is required.

Compliance Considerations:

All recommended substitutes maintain UL94 V-0 flammability rating and MSL 1 (Unlimited) moisture sensitivity level. Parts with RoHS compliance (77313-124-20LF, 1-826632-0, and all Preci-Dip and Samtec options) are preferred for new designs subject to environmental regulations. The original 77313-124-20 is RoHS non-compliant and should be replaced in designs targeting modern procurement standards.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the obsolete 77313-124-20 with the 77313-124-20LF?

A: Yes. The 77313-124-20LF is the direct active equivalent with identical mechanical and electrical specifications. The primary difference is RoHS compliance and lead-free termination. No design modifications are required.

Q: What are the key parameters that determine if a part can substitute for the 77313-124-20?

A: The critical parameters are: 20 positions, 2 rows, 0.100" (2.54mm) pitch, 0.100" (2.54mm) row spacing, male pin contact type, through-hole mounting, solder termination, push-pull fastening, and unshrouded design. Contact shape (square or circular) and contact material (phosphor bronze or brass) variations are acceptable. All substitutes must maintain UL94 V-0 flammability rating.

Q: Are there differences in contact length between the main part and substitutes?

A: Yes. Contact length variations exist across substitute parts. The 77313-124-20 specifies 0.266" (6.75mm) mating contact length and 0.114" (2.90mm) post length. Substitutes range from 0.118" to 0.276" mating contact length and 0.118" to 0.126" post length. These variations remain within acceptable tolerances for standard board-to-board interconnection applications and do not affect mechanical compatibility.

Q: What is the difference between gold and tin contact finishes?

A: Contact finish affects corrosion resistance and electrical performance. Gold-finished contacts (77313-124-20, 77313-124-20LF, 1-826632-0, 450-10-220-00-018101, 892-70-020-10-002101, BBD-110-G-A) provide superior corrosion resistance and lower contact resistance. Tin-finished contacts (450-80-220-00-018101, 451-80-220-00-003101, 892-80-020-10-001101, 892-80-020-10-002101) are cost-effective alternatives suitable for standard industrial environments. Selection depends on application requirements and environmental exposure.

Q: Does insulation material affect compatibility?

A: Insulation material variations (thermoplastic, PBT, PCT/polyester/glass-filled, polyamide/nylon/glass-filled) do not affect electrical or mechanical compatibility for standard board-to-board applications. All specified materials maintain UL94 V-0 flammability rating. Material selection may influence mechanical robustness in high-vibration or high-temperature environments, but all options are suitable for typical industrial applications.

Q: What is the significance of RoHS compliance?

A: RoHS compliance indicates the part meets environmental regulations restricting hazardous substances. The original 77313-124-20 is RoHS non-compliant. All recommended substitutes are RoHS compliant (RoHS or ROHS3), making them suitable for designs subject to environmental procurement standards and regulations in electronics manufacturing.

Q: Can I use parts with different operating temperature ranges?

A: Operating temperature ranges vary among substitutes. The 77313-124-20 specifies no operating temperature limit in available data. The 77313-124-20LF operates -65°C to 130°C. Preci-Dip and Samtec options operate -55°C to 125°C. TE Connectivity 1-826632-0 operates -65°C to 105°C. Selection depends on application thermal requirements. Verify the substitute's temperature range meets your design specifications.

Q: Are there packaging differences between substitutes?

A: Yes. Packaging varies: 77313-124-20LF is supplied in bulk; 95278-101A12LF in tape and reel (note: this is a 12-position SMD variant, not a direct substitute); Preci-Dip and TE Connectivity options in bulk; Samtec BBD-110-G-A in tube. Packaging affects procurement, handling, and assembly processes. Verify packaging compatibility with your manufacturing workflow.

Q: What is the current rating for each substitute?

A: Current ratings are: 77313-124-20 (not specified), 77313-124-20LF (3A per contact), 1-826632-0 (5A), Preci-Dip 450 series (3A), Preci-Dip 451 series (3A), Preci-Dip 892 series (3A), BBD-110-G-A (not specified). Select based on application current requirements. Higher current ratings provide design margin for power distribution applications.

Q: Is the 95278-101A12LF a suitable substitute?

A: No. The 95278-101A12LF is a 12-position surface-mount header, not a direct substitute for the 20-position through-hole 77313-124-20. While it shares the same 2.54mm pitch and BERGSTIK series designation, the reduced position count and different mounting technology make it unsuitable for applications requiring 20 positions and through-hole termination.

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