TOLC-120-12-L-Q Equivalent & Substitute Parts

Part Overview

The TOLC-120-12-L-Q is an active Samtec Inc. rectangular connector header designed for surface mount board-to-board applications. This quad row SMT terminal features 80 positions at 0.050" (1.27mm) pitch with shrouded 4-wall construction and push-pull fastening. The connector is RoHS3 compliant and rated for -55°C to 125°C operation. Substitute parts are identified to accommodate design variations requiring different insulation heights, mated stacking heights, or mechanical features while maintaining core electrical and mechanical compatibility.

Substiute Parts

TOLC-120-12-L-Q

Samtec Inc.In Stock: 1133TOLC-120-12-L-Q Datasheet

Current PartRFQ

TOLC-120-32-L-Q-LC

Samtec Inc.In Stock: 1078TOLC-120-32-L-Q-LC Datasheet

SimilarRFQ

TOLC-120-22-L-Q-A

Samtec Inc.In Stock: 1024TOLC-120-22-L-Q-A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for TOLC-120-12-L-Q is determined by the following invariant parameters that must remain constant across all substitute parts:

• Manufacturer: Samtec Inc.
• Series: FOURRAY™ TOLC
• Number of Positions: 80
• Number of Rows: 4
• Pitch - Mating: 0.050" (1.27mm)
• Row Spacing - Mating: 0.050" (1.27mm)
• Contact Type: Male Pin
• Connector Type: Header, Elevated
• Mounting Type: Surface Mount
• Termination: Solder
• Fastening Type: Push-Pull
• Contact Length - Mating: 0.100" (2.54mm)
• Contact Shape: Square
• Contact Finish - Mating: Gold
• Contact Material: Phosphor Bronze
• Insulation Material: Liquid Crystal Polymer (LCP)
• Current Rating: 2.4A per Contact
• Operating Temperature: -55°C ~ 125°C
• Material Flammability Rating: UL94 V-0
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts differ only in the following parameters: Insulation Height, Mated Stacking Heights, and mechanical features (Board Lock or Board Guide).

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and full RoHS3 compliance with identical electrical ratings and operating temperature ranges. Selection between TOLC-120-12-L-Q, TOLC-120-32-L-Q-LC, and TOLC-120-22-L-Q-A is determined by PCB stack-up requirements and mechanical constraint specifications.

TOLC-120-12-L-Q provides the minimum profile with 8mm mated stacking height and 0.285" insulation height, suitable for space-constrained applications.

TOLC-120-32-L-Q-LC offers the maximum profile with 12mm mated stacking height, 0.442" insulation height, and Board Lock feature for enhanced mechanical retention.

TOLC-120-22-L-Q-A provides an intermediate profile with 10mm mated stacking height, 0.364" insulation height, and Board Guide feature for alignment assistance.

All parts are manufactured by Samtec Inc. within the FOURRAY™ TOLC series and carry identical contact ratings, termination methods, and environmental specifications.

Frequently Asked Questions (FAQ)

Q: Can TOLC-120-32-L-Q-LC be used as a direct replacement for TOLC-120-12-L-Q?

A: Electrical and contact compatibility is maintained. However, the increased insulation height (0.442" vs. 0.285") and mated stacking height (12mm vs. 8mm) require verification against PCB layout and mating connector specifications. The Board Lock feature on TOLC-120-32-L-Q-LC provides additional mechanical retention not present in the standard TOLC-120-12-L-Q.

Q: What is the difference between Board Lock and Board Guide features?

A: Board Lock (TOLC-120-32-L-Q-LC) provides positive mechanical locking engagement with the mating connector. Board Guide (TOLC-120-22-L-Q-A) provides alignment assistance during mating without locking engagement. TOLC-120-12-L-Q includes neither feature.

Q: Are all three parts RoHS3 compliant?

A: Yes. TOLC-120-12-L-Q, TOLC-120-32-L-Q-LC, and TOLC-120-22-L-Q-A are all RoHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: Do these parts share the same contact pitch and row spacing?

A: Yes. All three parts maintain 0.050" (1.27mm) mating pitch and 0.050" (1.27mm) row spacing, ensuring electrical compatibility at the contact interface.

Q: What determines which substitute part to select?

A: Selection is based on available PCB stack-up height, mated connector clearance requirements, and mechanical retention needs. Verify the required mated stacking height (8mm, 10mm, or 12mm) and insulation height (0.285", 0.364", or 0.442") against your design specifications before part selection.