TSW-103-24-S-S Equivalent & Substitute Parts

Part Overview

The TSW-103-24-S-S is a vertical rectangular connector header manufactured by Samtec Inc., designed for through-hole board-to-board or cable applications. This 3-position connector operates at 0.100" (2.54mm) pitch and features gold-plated mating contacts with tin-plated solder posts. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified based on matching core electrical and mechanical parameters: 3-position configuration, 0.100" (2.54mm) pitch, through-hole mounting, solder termination, push-pull fastening, and operating temperature range compatibility. Substitutes may vary in contact finish specifications, insulation material composition, and contact length dimensions within acceptable tolerances for the application.

Key Parameters

Parameter	TSW-103-24-S-S Value
Connector Type	Header
Contact Type	Male Pin
Number of Positions	3
Number of Rows	1
Pitch - Mating	0.100" (2.54mm)
Mounting Type	Through Hole
Termination	Solder
Fastening Type	Push-Pull
Shrouding	Unshrouded
Operating Temperature	-55°C ~ 125°C
Contact Finish - Mating	Gold
Contact Finish - Post	Tin
Contact Material	Phosphor Bronze
Insulation Material	Polybutylene Terephthalate (PBT)
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the TSW-103-24-S-S are grouped based on strict equivalence in the following critical parameters:

Core Matching Criteria:

3-position connector configuration
0.100" (2.54mm) mating pitch
Male pin contact type
Through-hole mounting
Solder termination
Push-pull fastening mechanism
Unshrouded design
Single row layout
UL94 V-0 flammability rating

Allowable Variations:

Contact finish composition (gold vs. tin on mating surface)
Contact finish thickness within specification ranges
Contact length dimensions (mating and post lengths may vary within tolerance)
Overall contact length (0.465" to 0.525" range acceptable)
Insulation material (PBT or thermoplastic alternatives)
Insulation height (0.100" to 0.110" range)
Operating temperature upper limit (105°C to 125°C acceptable)
Contact material (phosphor bronze, brass, or copper alloy)
Packaging format (bulk or bag)
Manufacturer source (Samtec, Amphenol ICC/FCI, TE Connectivity)

Substitutes are organized by manufacturer and series designation to facilitate cross-reference selection.

Parameter Comparison

Parameter	TSW-103-24-S-S	77311-122-03LF	77311-124-03LF	77311-422-03LF	77311-422C03LF	77311-424-03LF	77311-822-03LF	77311-827-03LF	826646-3	826647-3	826926-3
Manufacturer	Samtec Inc.	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	Amphenol ICC (FCI)	TE Connectivity	TE Connectivity	TE Connectivity
Series	TSW	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	BERGSTIK®	AMPMODU Mod II	AMPMODU Mod II	AMPMODU Mod II
Connector Type	Header	Header	Header	Header	Header	Header	Header	Header	Header, Breakaway	Header, Breakaway	Header, Breakaway
Contact Type	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin	Male Pin
Number of Positions	3	3	3	3	3	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)	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	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination	Solder	Solder	Solder	Solder	Kinked Pin, 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	Push-Pull
Shrouding	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded	Unshrouded
Contact Length - Mating	0.265" (6.73mm)	0.305" (7.75mm)	0.266" (6.75mm)	0.305" (7.75mm)	0.305" (7.75mm)	0.266" (6.75mm)	0.305" (7.75mm)	0.260" (6.60mm)	0.228" (5.80mm)	0.228" (5.80mm)	0.264" (6.70mm)
Contact Length - Post	0.115" (2.92mm)	0.120" (3.05mm)	0.114" (2.90mm)	0.120" (3.05mm)	0.120" (3.05mm)	0.114" (2.90mm)	0.120" (3.05mm)	0.105" (2.67mm)	0.126" (3.20mm)	0.098" (2.50mm)	0.126" (3.20mm)
Overall Contact Length	0.480" (12.19mm)	0.525" (13.34mm)	0.480" (12.19mm)	0.525" (13.34mm)	0.525" (13.34mm)	0.480" (12.19mm)	0.525" (13.34mm)	0.465" (11.81mm)	0.465" (11.81mm)	0.437" (11.10mm)	0.500" (12.70mm)
Insulation Height	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)	0.110" (2.79mm)	0.110" (2.79mm)	0.110" (2.79mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square	Square
Contact Finish - Mating	Gold	Gold or Gold, GXT™	Gold or Gold, GXT™	Tin	Tin	Tin	Gold or Gold, GXT™	Gold or Gold, GXT™	Gold	Gold	Tin
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	78.7µin (2.00µm)	78.7µin (2.00µm)	78.7µin (2.00µm)	15.0µin (0.38µm)	15.0µin (0.38µm)	3.90µin (0.099µm)	3.90µin (0.099µm)	78.7µin (2.00µm)
Contact Finish - Post	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin	Tin
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Brass	Brass	Copper Alloy
Insulation Material	Polybutylene Terephthalate (PBT)	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Thermoplastic	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)	Polybutylene Terephthalate (PBT)
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
Operating Temperature	-55°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 105°C	-65°C ~ 105°C	-65°C ~ 105°C
Current Rating (Amps)	Not specified	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	3A per Contact	5A	5A	5A
RoHS Status	ROHS3 Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS Compliant	RoHS 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)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and comply with RoHS requirements, ensuring long-term availability and regulatory compliance. Selection between substitutes depends on specific application requirements:

Amphenol ICC BERGSTIK® Series (77311 variants): These parts offer extended operating temperature range (-65°C to 125°C) compared to the TSW-103-24-S-S (-55°C to 125°C), providing additional thermal margin for demanding applications. The 77311-122-03LF and 77311-822-03LF variants feature gold mating contacts matching the original part's contact finish specification. The 77311-422-03LF and 77311-424-03LF variants employ tin mating contacts with increased finish thickness (78.7µin), offering enhanced durability in high-cycle mating environments. The 77311-827-03LF provides the most compact overall contact length (0.465") with reduced gold finish thickness (15.0µin).

TE Connectivity AMPMODU Mod II Series (826646-3, 826647-3, 826926-3): These parts feature breakaway connector capability and higher current rating (5A per contact) compared to Amphenol variants (3A per contact). The 826646-3 and 826647-3 employ gold mating contacts with minimal finish thickness (3.90µin), suitable for low-force mating applications. The 826926-3 features tin mating contacts with standard finish thickness (78.7µin). All AMPMODU variants operate at reduced maximum temperature (105°C) compared to the original part, limiting use in high-temperature applications exceeding 105°C.

Contact Finish Considerations: Gold-finished mating contacts (TSW-103-24-S-S, 77311-122-03LF, 77311-822-03LF, 77311-827-03LF, 826646-3, 826647-3) provide superior corrosion resistance and lower contact resistance in low-current applications. Tin-finished mating contacts (77311-422-03LF, 77311-424-03LF, 826926-3) offer enhanced wear resistance in high-cycle mating scenarios.

Contact Length Variations: Parts with longer mating contact lengths (0.305", 0.525" overall) accommodate thicker PCB assemblies or provide increased engagement depth. Parts with shorter mating contact lengths (0.228", 0.260") suit compact designs with space constraints.

Frequently Asked Questions (FAQ)

Q: Can I substitute a 77311-422-03LF (tin mating finish) for the TSW-103-24-S-S (gold mating finish)?

A: Yes. Both parts share identical 3-position, 0.100" pitch, through-hole solder configuration. The primary difference is mating contact finish: gold provides superior corrosion resistance and lower contact resistance, while tin offers enhanced wear resistance in high-cycle applications. Selection depends on application requirements for contact durability versus corrosion protection.

Q: What is the maximum operating temperature difference between TSW-103-24-S-S and substitute parts?

A: The TSW-103-24-S-S operates to 125°C maximum. Amphenol BERGSTIK® variants (77311 series) also operate to 125°C, providing equivalent thermal performance. TE Connectivity AMPMODU variants (826646-3, 826647-3, 826926-3) operate to 105°C maximum, limiting use in applications requiring sustained operation above 105°C.

Q: Are TE Connectivity AMPMODU parts (826646-3, 826647-3, 826926-3) compatible with TSW-103-24-S-S in terms of mating interface?

A: Yes. All parts maintain 0.100" (2.54mm) pitch and square contact geometry, ensuring mechanical and electrical compatibility at the mating interface. The breakaway feature of AMPMODU parts does not affect mating compatibility with standard headers.

Q: What packaging differences exist among substitute parts?

A: TSW-103-24-S-S ships in Bulk packaging. Amphenol BERGSTIK® parts ship in either Bulk (77311-122-03LF, 77311-124-03LF, 77311-424-03LF, 77311-822-03LF, 77311-827-03LF) or Bag (77311-422-03LF, 77311-422C03LF) formats. TE Connectivity AMPMODU parts ship in Bulk packaging. Packaging format does not affect electrical or mechanical performance.

Q: Does the kinked pin termination of 77311-422C03LF affect compatibility?

A: The 77311-422C03LF features kinked pin termination in addition to solder termination, providing mechanical retention during PCB assembly. This does not affect mating compatibility or electrical performance. Kinked pins offer assembly process advantages by preventing contact displacement during solder reflow.

Q: Which substitute part offers the highest current rating?

A: TE Connectivity AMPMODU parts (826646-3, 826647-3, 826926-3) provide 5A per contact current rating, compared to 3A per contact for Amphenol BERGSTIK® variants. The TSW-103-24-S-S does not specify current rating. Selection of higher current-rated parts provides additional margin for power distribution applications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts comply with RoHS requirements. The TSW-103-24-S-S and 826647-3, 826926-3 achieve ROHS3 compliance. Amphenol BERGSTIK® variants (77311 series) and TE Connectivity 826646-3 achieve RoHS compliance. Both compliance levels satisfy regulatory requirements for electronic component use.

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