TOLC-125-32-F-Q Equivalent & Substitute Parts

Part Overview

The TOLC-125-32-F-Q is an active Samtec Inc. rectangular connector header from the FOURRAY™ TOLC series. This surface mount quad row terminal connector features 100 positions with 0.050" (1.27mm) pitch and is designed for board-to-board applications. The part is ROHS3 compliant and carries UL94 V-0 flammability rating. Substitute parts are identified to address inventory availability, specific mechanical features, or application-specific requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer	Samtec Inc.
Series	FOURRAY™ TOLC
Category	Rectangular Connectors
Connector Type	Header, Elevated
Contact Type	Male Pin
Number of Positions	100
Number of Rows	4
Pitch - Mating	0.050" (1.27mm)
Row Spacing - Mating	0.050" (1.27mm)
Mounting Type	Surface Mount
Termination	Solder
Current Rating	2.4A per Contact
Operating Temperature	-55°C ~ 125°C
Contact Material	Phosphor Bronze
Contact Finish - Mating	Gold
Insulation Material	Liquid Crystal Polymer (LCP)
RoHS Status	ROHS3 Compliant
Material Flammability Rating	UL94 V-0
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for TOLC-125-32-F-Q is determined by the following critical parameters that must remain constant:

Connector type (Header, Elevated)
Contact type (Male Pin)
Number of positions (100)
Number of rows (4)
Pitch - mating (0.050" / 1.27mm)
Row spacing - mating (0.050" / 1.27mm)
Mounting type (Surface Mount)
Termination (Solder)
Contact material (Phosphor Bronze)
Contact finish - mating (Gold)
Insulation material (Liquid Crystal Polymer)
Operating temperature range (-55°C ~ 125°C)
Current rating (2.4A per Contact)
RoHS status (ROHS3 Compliant)
Material flammability rating (UL94 V-0)

Acceptable variations between the main part and substitutes are limited to:

Insulation height (mechanical envelope)
Mated stacking height (mechanical envelope)
Presence or absence of board guide feature
Inventory availability

Parameter Comparison

Parameter	TOLC-125-32-F-Q	TOLC-125-32-F-Q-A	TOLC-125-22-F-Q-A
Manufacturer	Samtec Inc.	Samtec Inc.	Samtec Inc.
Series	FOURRAY™ TOLC	FOURRAY™ TOLC	FOURRAY™ TOLC
Product Status	Active	Active	Active
Connector Type	Header, Elevated	Header, Elevated	Header, Elevated
Contact Type	Male Pin	Male Pin	Male Pin
Number of Positions	100	100	100
Number of Rows	4	4	4
Pitch - Mating	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)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Termination	Solder	Solder	Solder
Contact Length - Mating	0.100" (2.54mm)	0.100" (2.54mm)	0.100" (2.54mm)
Insulation Height	0.442" (11.23mm)	0.442" (11.23mm)	0.364" (9.25mm)
Contact Shape	Square	Square	Square
Contact Finish - Mating	Gold	Gold	Gold
Contact Finish Thickness - Mating	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)
Contact Material	Phosphor Bronze	Phosphor Bronze	Phosphor Bronze
Insulation Material	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)	Liquid Crystal Polymer (LCP)
Operating Temperature	-55°C ~ 125°C	-55°C ~ 125°C	-55°C ~ 125°C
Material Flammability Rating	UL94 V-0	UL94 V-0	UL94 V-0
Insulation Color	Black	Black	Black
Current Rating (Amps)	2.4A per Contact	2.4A per Contact	2.4A per Contact
Mated Stacking Heights	12mm	12mm	10mm
Contact Finish Thickness - Post	3.00µin (0.076µm)	3.00µin (0.076µm)	3.00µin (0.076µm)
Base Product Number	TOLC-125	TOLC-125	TOLC-125
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99	EAR99
HTSUS	8536.69.4040	8536.69.4040	8536.69.4040
Features	None specified	Board Guide	Board Guide
Inventory (Pcs)	655	1105	818

Engineering Selection Recommendations

All three parts—TOLC-125-32-F-Q, TOLC-125-32-F-Q-A, and TOLC-125-22-F-Q-A—are active products from Samtec Inc. with identical electrical specifications, ROHS3 compliance, and UL94 V-0 flammability certification.

TOLC-125-32-F-Q and TOLC-125-32-F-Q-A are electrically and mechanically equivalent with identical insulation height (0.442" / 11.23mm) and mated stacking height (12mm). The primary difference is the addition of a board guide feature in the -A variant, which provides enhanced mechanical stability during assembly.

TOLC-125-22-F-Q-A differs in mechanical envelope only: insulation height is 0.364" (9.25mm) and mated stacking height is 10mm. This part is suitable for applications with space constraints or lower profile requirements. The board guide feature is present in this variant.

Selection between these parts depends on available board space and assembly process requirements. All three maintain identical electrical performance, current rating, temperature range, and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can TOLC-125-32-F-Q-A be used as a direct replacement for TOLC-125-32-F-Q?

A: Yes. Both parts have identical electrical specifications, pitch, row spacing, contact material, and current rating. The board guide feature in the -A variant provides additional mechanical support without affecting electrical compatibility.

Q: What is the key difference between TOLC-125-32-F-Q-A and TOLC-125-22-F-Q-A?

A: The primary difference is mechanical envelope. TOLC-125-32-F-Q-A has an insulation height of 0.442" (11.23mm) and 12mm mated stacking height. TOLC-125-22-F-Q-A has an insulation height of 0.364" (9.25mm) and 10mm mated stacking height. Both maintain identical electrical specifications and current rating.

Q: Are all three parts RoHS compliant?

A: Yes. TOLC-125-32-F-Q, TOLC-125-32-F-Q-A, and TOLC-125-22-F-Q-A are all ROHS3 compliant with UL94 V-0 flammability rating.

Q: Can TOLC-125-22-F-Q-A be used in applications designed for TOLC-125-32-F-Q?

A: Electrical compatibility is maintained. However, the reduced insulation height (0.364" vs 0.442") and lower mated stacking height (10mm vs 12mm) must be accommodated in the PCB layout and mechanical design. Board space constraints may make this substitution suitable for compact designs.

Q: What is the moisture sensitivity level for these connectors?

A: All three parts have Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without special storage requirements.

Q: Are these connectors suitable for high-temperature applications?

A: Yes. All three parts operate across the temperature range of -55°C to 125°C, supporting both industrial and high-temperature applications.

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