3M 2308-6121-TG Equivalent & Substitute Parts

Part Overview

The 3M 2308-6121-TG is an 8-position, 2-row rectangular connector header with 0.100" (2.54mm) pitch designed for through-hole board-to-board or cable applications. This unshrouded header features male pins with gold-plated mating contacts and tin-lead plated posts, rated for 3A per contact and operating temperatures from -55°C to 105°C. The connector is constructed with thermoplastic, glass-filled insulation and meets UL94 V-0 flammability requirements.

The 2308-6121-TG remains an active product with 714 units in stock. Equivalent and substitute parts are identified based on matching electrical and mechanical parameters that ensure functional compatibility in standard 0.100" pitch header applications.

Key Parameters

Parameter	Value
Connector Type	Header
Contact Type	Male Pin
Pitch - Mating	0.100" (2.54mm)
Number of Positions	8
Number of Rows	2
Row Spacing - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Current Rating	3A
Operating Temperature	-55°C ~ 105°C
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 3M 2308-6121-TG are qualified based on the following critical parameters:

Pitch and Position Configuration: All substitutes maintain 0.100" (2.54mm) mating pitch with 8 positions in a 2-row configuration and 0.100" row spacing
Connector Type and Style: All are unshrouded headers designed for board-to-board applications with through-hole solder termination
Contact Configuration: All feature male pins with square or circular contact geometry
Electrical Rating: All maintain 3A current rating and UL94 V-0 flammability compliance
Moisture Sensitivity: All are MSL 1 (Unlimited)
Contact Material and Finish: Substitutes vary in contact material (copper alloy, phosphor bronze, brass) and finish (gold, tin, or tin-lead), which do not affect functional compatibility in standard applications

Substitutes are grouped by contact finish and material composition, as these characteristics determine performance in specific environmental and electrical conditions while maintaining mechanical and electrical interchangeability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Series	Pitch (mm)	Positions	Rows	Contact Type	Contact Material	Mating Finish	Operating Temp (°C)	Current Rating (A)	RoHS Status	Inventory (Pcs)
2308-6121-TG	3M	2300	2.54	8	2	Male Pin	Copper Alloy	Gold	-55 ~ 105	3	Non-compliant	714
0010897081	Molex	C-Grid 70280	2.54	8	2	Male Pin	Copper Alloy	Tin	-	-	ROHS3 Compliant	2770
450-10-208-00-001101	Preci-Dip	450	2.54	8	2	Male Pin	Brass	Gold	-55 ~ 125	3	ROHS3 Compliant	1725
67996-108HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	8	2	Male Pin	Phosphor Bronze	Gold	-65 ~ 125	3	RoHS Compliant	2200
67996-208HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	8	2	Male Pin	Phosphor Bronze	Gold	-65 ~ 125	3	RoHS Compliant	930
67996-408HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	8	2	Male Pin	Phosphor Bronze	Tin	-65 ~ 125	3	RoHS Compliant	3675
67997-108HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	8	2	Male Pin	Phosphor Bronze	Gold	-65 ~ 130	3	RoHS Compliant	1996
67997-208HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	8	2	Male Pin	Phosphor Bronze	Gold	-65 ~ 130	3	RoHS Compliant	3720
67997-408HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	8	2	Male Pin	Phosphor Bronze	Tin	-65 ~ 130	3	RoHS Compliant	2170
68602-108HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	8	2	Male Pin	Phosphor Bronze	Gold	-65 ~ 130	3	RoHS Compliant	1040
68602-408HLF	Amphenol ICC (FCI)	BERGSTIK® II	2.54	8	2	Male Pin	Phosphor Bronze	Tin	-65 ~ 130	3	RoHS Compliant	1680

Engineering Selection Recommendations

RoHS Compliance Consideration: The 3M 2308-6121-TG is RoHS non-compliant. For applications requiring RoHS3 compliance, the Molex 0010897081 or any Preci-Dip or Amphenol ICC (FCI) substitute from the BERGSTIK® II series provides compliant alternatives.

Temperature Range: The original 3M part operates from -55°C to 105°C. Amphenol ICC (FCI) BERGSTIK® II substitutes (67996, 67997, 68602 series) extend the upper operating limit to 125°C or 130°C, providing additional thermal margin for demanding applications.

Contact Finish Selection: Gold-plated contacts (67996-108HLF, 67996-208HLF, 67997-108HLF, 67997-208HLF, 68602-108HLF) match the original part's mating surface finish. Tin-plated alternatives (67996-408HLF, 67997-408HLF, 68602-408HLF) offer cost optimization while maintaining electrical performance for standard applications.

Inventory Availability: Amphenol ICC (FCI) 67996-408HLF and 67997-208HLF offer the highest stock levels (3675 and 3720 units respectively), supporting high-volume production requirements.

Frequently Asked Questions (FAQ)

Q: Are all listed substitutes mechanically interchangeable with the 3M 2308-6121-TG?

A: Yes. All substitutes maintain identical 0.100" (2.54mm) pitch, 8-position, 2-row configuration with through-hole solder termination. Mechanical fit and board layout compatibility are preserved across all alternatives.

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

A: Gold plating provides superior corrosion resistance and lower contact resistance, suitable for high-reliability and harsh environment applications. Tin plating is cost-effective and adequate for standard indoor applications with moderate environmental exposure. Both finishes maintain the 3A current rating.

Q: Can I substitute a part with a higher operating temperature range?

A: Yes. Parts rated for -65°C to 130°C (Amphenol ICC FCI 67997 and 68602 series) are suitable for applications requiring the original -55°C to 105°C range, as they exceed the thermal requirements.

Q: Does contact material (copper alloy, phosphor bronze, brass) affect compatibility?

A: Contact material does not affect mechanical or electrical interchangeability in standard 0.100" pitch header applications. Material selection influences durability and performance in specific environments but does not prevent direct substitution.

Q: Which substitute is recommended for new designs requiring RoHS compliance?

A: Molex 0010897081, Preci-Dip 450-10-208-00-001101, or any Amphenol ICC (FCI) BERGSTIK® II part (67996, 67997, 68602 series) meets RoHS3 compliance requirements.

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

A: Yes. Contact lengths vary slightly across substitutes (ranging from 0.156" to 0.240" for mating contacts and 0.095" to 0.150" for posts). These variations do not affect standard board-to-board mating but should be verified for applications with specific PCB thickness or connector stack-up requirements.

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