Amphenol ICC 76308-203 Equivalent & Substitute Parts

Part Overview

The Amphenol ICC 76308-203 is a 3-position receptacle connector with 0.100" (2.54mm) pitch, gold-plated mating contacts, and through-hole solder termination. This connector is classified as obsolete, necessitating identification of active equivalent and substitute parts for new designs and ongoing production support. The BergCon® series receptacle serves board-to-board applications with push-pull fastening and UL94 V-0 flammability rating.

Key Parameters

Parameter	Value
Manufacturer Part Number	76308-203
Manufacturer	Amphenol ICC (FCI)
Connector Type	Receptacle
Contact Type	Female Socket
Number of Positions	3
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Contact Finish - Mating	Gold
Fastening Type	Push-Pull
Insulation Material	Thermoplastic, Polyester, Glass Filled
Material Flammability Rating	UL94 V-0
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the 76308-203 is determined by the following critical parameters:

Mandatory Matching Parameters:

Connector type: Receptacle (female socket)
Number of positions: 3
Pitch - mating: 0.100" (2.54mm)
Mounting type: Through hole
Termination: Solder
Fastening type: Push-pull
Contact finish - mating: Gold

Acceptable Variation Parameters:

Contact material (Brass vs. Phosphor Bronze vs. Beryllium Copper)
Insulation material (Thermoplastic vs. Polyester vs. Liquid Crystal Polymer)
Contact length - post (within mechanical compatibility range)
Insulation height (within mechanical compatibility range)
Manufacturer (Amphenol ICC, Molex, Samtec)

Substitute parts are grouped into two categories: direct Molex equivalents (0901471203, 0901471303) and Samtec elevated socket alternatives (ESS-103 series). The Molex parts maintain identical receptacle connector architecture with active product status and RoHS3 compliance. The Samtec ESS-103 series offers elevated socket design with alternative contact geometry and insulation materials while maintaining core electrical and mechanical compatibility.

Parameter Comparison

Parameter	76308-203 (Main)	0901471203 (Molex)	0901471303 (Molex)	ESS-103-G-03 (Samtec)	ESS-103-G-06 (Samtec)	ESS-103-G-28 (Samtec)
Connector Type	Receptacle	Receptacle	Receptacle	Elevated Socket	Elevated Socket	Elevated Socket
Contact Type	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket	Female Socket
Number of Positions	3	3	3	3	3	3
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)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Solder	Solder
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness - Mating	39.4µin (1.00µm)	15.0µin (0.38µm)	30.0µin (0.76µm)	10.0µin (0.25µm)	10.0µin (0.25µm)	10.0µin (0.25µm)
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Insulation Height	0.335" (8.51mm)	0.335" (8.51mm)	0.335" (8.51mm)	0.300" (7.62mm)	0.300" (7.62mm)	0.300" (7.62mm)
Contact Length - Post	0.135" (3.43mm)	0.114" (2.90mm)	0.114" (2.90mm)	0.123" (3.12mm)	0.215" (5.46mm)	0.373" (9.47mm)
Contact Material	Brass	Phosphor Bronze	Phosphor Bronze	Beryllium Copper	Beryllium Copper	Beryllium Copper
Insulation Material	Thermoplastic, Polyester, Glass Filled	Polyester, Glass Filled	Polyester, Glass Filled	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Material Flammability Rating	UL94 V-0	—	—	UL94 V-0	UL94 V-0	UL94 V-0
Operating Temperature	—	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Current Rating (Amps)	—	3A	3A	—	—	—
Voltage Rating	—	350V	350V	—	—	—
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Molex 0901471203 and 0901471303 (C-Grid 90147 Series)

These Molex receptacle connectors are direct functional equivalents to the 76308-203. Both parts maintain identical connector architecture, pitch, position count, and through-hole solder termination. The 0901471203 and 0901471303 differ only in contact finish thickness (15.0µin vs. 30.0µin), with the 0901471303 providing thicker gold plating closer to the original specification. Both are ROHS3 compliant and carry active product status, making them suitable for new designs and production continuity. Operating temperature range extends to 105°C with 350V voltage rating and 3A current rating per contact.

Samtec ESS-103 Series (Elevated Socket Connectors)

The Samtec ESS-103 series offers alternative socket geometry with elevated contact design. These parts maintain the same 3-position, 0.100" pitch, through-hole solder termination, and push-pull fastening. Key differences include Liquid Crystal Polymer (LCP) insulation material, Beryllium Copper contacts, and variable contact post lengths (0.123", 0.215", 0.373"). The ESS-103-G-03, ESS-103-G-06, and ESS-103-G-28 variants provide different post lengths for application-specific stacking heights. All ESS-103 variants are ROHS3 compliant with active product status and extended operating temperature range (-55°C to 125°C). UL94 V-0 flammability rating is maintained across all variants.

Selection Criteria:

For direct replacement in existing designs, select Molex 0901471203 or 0901471303. For new designs requiring extended temperature performance or alternative contact geometry, select appropriate ESS-103 variant based on required contact post length. All substitute parts are active products with current manufacturing support and improved compliance status compared to the obsolete 76308-203.

Frequently Asked Questions (FAQ)

Q: Can Molex 0901471203 directly replace the Amphenol ICC 76308-203?

A: Yes. Both are 3-position receptacle connectors with 0.100" pitch, through-hole solder termination, and push-pull fastening. The Molex part is electrically and mechanically compatible. The primary difference is contact finish thickness (15.0µin vs. 39.4µin), with the Molex part providing adequate gold plating for standard applications.

Q: What is the difference between Molex 0901471203 and 0901471303?

A: Both are identical C-Grid 90147 series receptacles with the same connector architecture and electrical ratings. The only difference is contact finish thickness: 0901471203 has 15.0µin (0.38µm) gold plating, while 0901471303 has 30.0µin (0.76µm) gold plating. Select 0901471303 for applications requiring thicker gold plating.

Q: How do Samtec ESS-103 parts differ from the Molex alternatives?

A: Samtec ESS-103 parts use elevated socket design with Beryllium Copper contacts and Liquid Crystal Polymer insulation, compared to standard receptacle design with Phosphor Bronze contacts in Molex parts. The ESS-103 series offers variable contact post lengths (0.123", 0.215", 0.373") for different stacking height requirements. All maintain 0.100" pitch and 3-position configuration.

Q: Which substitute part should I select for a new design?

A: For new designs, select either Molex 0901471203/0901471303 or Samtec ESS-103 variants based on application requirements. Molex parts provide direct architectural compatibility with the original 76308-203. Samtec parts offer extended temperature range (-55°C to 125°C vs. -55°C to 105°C) and alternative contact geometry. All substitute parts are ROHS3 compliant and carry active product status.

Q: Are there packaging differences between substitute parts?

A: Molex 0901471203 and 0901471303 are supplied in tube packaging. Samtec ESS-103 variants are supplied in bulk packaging. Verify packaging requirements for your procurement and assembly processes.

Q: What is the contact post length significance in Samtec ESS-103 variants?

A: Contact post length determines the mated stacking height when the connector is engaged with a mating header. ESS-103-G-03 and ESS-103-T-03 have 0.123" posts (standard height), ESS-103-G-06 and ESS-103-T-06 have 0.215" posts (elevated), and ESS-103-G-28 has 0.373" posts (extended). Select based on your PCB layout and component clearance requirements.

Q: Is RoHS compliance important for my application?

A: The original 76308-203 is RoHS non-compliant. All substitute parts (Molex and Samtec) are ROHS3 compliant, meeting current environmental regulations. If your application or market requires RoHS compliance, any of the substitute parts satisfy this requirement.

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