TFM-125-22-S-D Equivalent & Substitute Parts

Part Overview

The TFM-125-22-S-D is a surface mount rectangular connector header manufactured by Samtec Inc. within the Tiger Eye™ TFM series. This 50-position, dual-row connector operates at 1.27mm (0.050") pitch and is designed for board-to-board or cable applications with push-pull fastening. The part is active in production status with full RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). Equivalent and substitute parts are identified to support design flexibility, inventory optimization, and supply chain continuity while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	TFM-125-22-S-D
Manufacturer	Samtec Inc.
Series	Tiger Eye™ TFM
Connector Type	Header
Contact Type	Male Pin
Number of Positions	50
Number of Rows	2
Pitch - Mating	0.050" (1.27mm)
Row Spacing - Mating	0.050" (1.27mm)
Mounting Type	Surface Mount
Shrouding	Shrouded - 4 Wall
Fastening Type	Push-Pull
Contact Finish - Mating	Gold (30.0µin / 0.76µm)
Contact Material	Phosphor Bronze
Insulation Material	Liquid Crystal Polymer (LCP)
Current Rating	2.9A per Contact
Voltage Rating	275VAC
Operating Temperature	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the TFM-125-22-S-D is determined by the following critical parameters:

Primary Compatibility Criteria:

Connector type (Header), contact type (Male Pin), and pitch (0.050" / 1.27mm)
Number of positions (50) and row configuration (2 rows)
Mounting type (Surface Mount) and shrouding (Shrouded - 4 Wall)
Fastening type (Push-Pull)
Contact material (Phosphor Bronze) and mating finish (Gold)
Electrical ratings: 2.9A per contact, 275VAC
Operating temperature range (-55°C ~ 125°C)
Material flammability (UL94 V-0) and RoHS3 compliance

Variable Parameters Allowing Substitution:

Insulation height (0.360" for main part; 0.290" or 0.435" for alternatives)
Features (Board Guide, Board Lock, or none)
Manufacturer (Samtec Inc. or TE Connectivity)

Samtec TFM series parts within the same base product number (TFM-125) with identical electrical and mechanical core specifications are direct substitutes. The TE Connectivity 5-104693-5 is included as a cross-manufacturer equivalent with compatible pitch, position count, and shrouding, though with noted differences in contact length and current rating.

Parameter Comparison

Parameter	TFM-125-22-S-D	TFM-125-22-S-D-A	TFM-125-22-S-D-LC	TFM-125-12-S-D-A	TFM-125-12-S-D-LC	TFM-125-12-SM-D-LC	TFM-125-32-S-D-A	TFM-125-32-S-D-LC	5-104693-5
Manufacturer	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	Samtec Inc.	TE Connectivity
Series	Tiger Eye™ TFM	Tiger Eye™ TFM	Tiger Eye™ TFM	Tiger Eye™ TFM	Tiger Eye™ TFM	Tiger Eye™ TFM	Tiger Eye™ TFM	Tiger Eye™ TFM	AMPMODU 50/50 Grid
Number of Positions	50	50	50	50	50	50	50	50	50
Number of Rows	2	2	2	2	2	2	2	2	2
Pitch - Mating	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)
Row Spacing - Mating	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)	0.050" (1.27mm)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Shrouding	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall	Shrouded - 4 Wall
Fastening Type	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull	Push-Pull
Contact Length - Mating	0.139" (4.63mm)	0.139" (4.63mm)	0.139" (4.63mm)	0.139" (4.63mm)	0.139" (4.63mm)	0.139" (4.63mm)	0.139" (4.63mm)	0.139" (4.63mm)	0.120" (3.05mm)
Insulation Height	0.360" (9.14mm)	0.360" (9.14mm)	0.360" (9.14mm)	0.290" (7.37mm)	0.290" (7.37mm)	0.290" (7.37mm)	0.435" (11.05mm)	0.435" (11.05mm)	0.367" (9.33mm)
Contact Shape	Square	Square	Square	Square	Square	Square	Square	Square	Circular
Contact Finish - Mating	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold	Gold
Contact Finish Thickness - Mating	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)	30.0µin (0.76µm)
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Current Rating (Amps)	2.9A per Contact	2.9A per Contact	2.9A per Contact	2.9A per Contact	2.9A per Contact	2.9A per Contact	2.9A per Contact	2.9A per Contact	0.5A per Contact
Voltage Rating	275VAC	275VAC	275VAC	275VAC	275VAC	275VAC	275VAC	275VAC	Not Specified
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C	-65°C ~ 105°C
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
Insulation Color	Black	Black	Black	Black	Black	Black	Black	Black	Black
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	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

Engineering Selection Recommendations

All listed substitute parts maintain active production status and full RoHS3 compliance, ensuring regulatory alignment and supply chain stability. Selection among Samtec TFM series alternatives (TFM-125-22-S-D-A, TFM-125-22-S-D-LC, TFM-125-12-S-D-A, TFM-125-12-S-D-LC, TFM-125-12-SM-D-LC, TFM-125-32-S-D-A, TFM-125-32-S-D-LC) is determined by insulation height requirements and mechanical features. Parts with 0.360" insulation height (TFM-125-22-S-D, TFM-125-22-S-D-A, TFM-125-22-S-D-LC) are direct mechanical equivalents. Parts with 0.290" height (TFM-125-12 series) accommodate lower-profile applications, while 0.435" height variants (TFM-125-32 series) support higher stacking requirements. Board Guide and Board Lock features provide mechanical alignment options without affecting electrical performance.

The TE Connectivity 5-104693-5 is electrically compatible for applications with current requirements up to 0.5A per contact and operating temperatures within -65°C to 105°C. This part differs in contact shape (circular vs. square), contact length (0.120" vs. 0.139"), and current rating (0.5A vs. 2.9A), making it suitable only for lower-power applications.

Frequently Asked Questions (FAQ)

Q: Can TFM-125-22-S-D be directly replaced with TFM-125-22-S-D-A or TFM-125-22-S-D-LC?

A: Yes. Both parts share identical electrical ratings (2.9A per contact, 275VAC), operating temperature range (-55°C ~ 125°C), pitch (0.050"), position count (50), and insulation height (0.360"). The difference is mechanical features: TFM-125-22-S-D-A includes Board Guide, and TFM-125-22-S-D-LC includes Board Lock. Selection depends on PCB design requirements for alignment and retention.

Q: What is the difference between TFM-125-12 and TFM-125-32 series substitutes?

A: The primary difference is insulation height. TFM-125-12 series has 0.290" height, suitable for compact designs. TFM-125-32 series has 0.435" height, accommodating higher stacking or clearance requirements. All other electrical and mechanical parameters remain identical to the main part.

Q: Is 5-104693-5 a direct substitute for TFM-125-22-S-D?

A: 5-104693-5 is a cross-manufacturer equivalent with compatible pitch, position count, and shrouding. However, it has lower current rating (0.5A vs. 2.9A per contact), shorter contact length (0.120" vs. 0.139"), and different operating temperature range (-65°C ~ 105°C vs. -55°C ~ 125°C). Use only for applications within these electrical and thermal limits.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed parts, including the TE Connectivity 5-104693-5, are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity level, ensuring compliance with environmental regulations and handling requirements.

Q: What determines whether a part can substitute for TFM-125-22-S-D?

A: Core substitution criteria include 0.050" (1.27mm) pitch, 50-position dual-row configuration, surface mount mounting, shrouded 4-wall design, push-pull fastening, phosphor bronze contacts with gold mating finish, and LCP insulation. Electrical ratings (2.9A per contact, 275VAC) and operating temperature (-55°C ~ 125°C) must be maintained. Insulation height and mechanical features (Board Guide, Board Lock) are variable parameters allowing substitution.

Q: Can I use TFM-125-12-SM-D-LC instead of TFM-125-22-S-D?

A: Yes, if your PCB design accommodates the 0.290" insulation height. The part is electrically and mechanically compatible with identical pitch, position count, current rating, voltage rating, and operating temperature. The "SM" designation indicates a specific mounting variant, and "LC" indicates Board Lock feature.

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