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Accessory - QSZ clip

QuickSet (QT series)
Quick Set Pictures

Heat Sinks are used to cool many devices (ASICS, FPGAs, CPUs, etc..). Each has a different mechanical and thermal requirement. To meet with these requirements, it is important to select an appropriate heat sink and attachment method.
The QuickSet series was developed to meet these requirements. Heat Sinks are mounted directly to the PCB with anchor pins that take up a minimum of board real estate. Attachment forces and shock loads are transmitted to the PCB instead of the chip and solder balls. The torsion springs generate the appropriate attachment load and mounting pressure for the heat sink and thermal interface material.


1. Features and Advantages 5. Removal Procedure
2. Torsion Spring Specification and Load Chart 6. Standard QuickSet Heat Sinks
3. Anchor Pin Specification 7. Easy Customization
4. Installation Procedure 8. Related Links

1. Features and Advantages
Small PCB Area

Mounting pins only require 1.8mm[.071"] diameter holes in the PCB.

qt series photo1

Heat sink comes pre-assembled with clip, ready for installation. Press and slide to install. Easy!

qt series photo3
Stable & Robust

Attachment forces are transferred to the PCB instead of the device or solder balls.

qt series photo2
Location and Orientation Guide

Heat sink location and orientation is precisely set by anchor pin.

Flexible Customization

Anchor pin locations can be changed without requiring a tooling/NRE fee.

Attachment Force

By using different torsion springs and anchor pins, the appropriate attachment force can be generated.

2. Torsion Spring Specification and Load Chart

Three torsion spring options are available. Individual torsion springs are NOT available as seperate part numbers.

Model   Wire Diameter (mm) Attachment force range per
torsion spring (kgf)
Anchor Pin S001YZ4J 0.8 1.0 ~ 1.3
S001YZ4N 0.9 1.4 ~ 1.9
S001YZ4M 1.0 1.9 ~ 2.9

1st, Calculate X value (T) of graph, using the formula below the graph.
2nd, Y value (Force) can be found from the intersection of "X value (T)" and "Torsion spring performance line".

Torsion spring load chart

3. Anchor Pin Specification

Anchor pins are captive and installed from the backside of the PCB. No solder is required.

Model   Size
Z (mm)
Downloads Availability / Price / Order
Data Sheet Others
Anchor Pin ANCR-8 8 catalog RoHS


ANCR-9 9
ANCR-11 11
ANCR-12 12
ANCR-13 13
ANCR-16 16

4. Installation Procedure

Guidance for installing procedure

1. Insert anchor pin

1. Insert anchor pins from back side of PCB.

2. set heatsink

1-1. Confirm that the anchor pin is fully inserted.

3. Set clip

2. Gently place the heat sink on the top of the chip, aligning the anchor pin and heat sink hole.

3-1. Press

3. Attach one end of the torsion spring’s hook plate to the anchor pin.

3-2. Lock

3-1 While applying light pressure to the heat sink to keep it level, press the hook plate down.

4. Reverse side

3-2 Slide the hook plate to outside of the heat sink. Anchor pin is locked to the hook plate.

4. Reverse side

4. Attach the hook plate of other side as the same procedure with step 3.

5. Done

5. Done!

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5. Removal Procedure

Removal procedure is the reverse of the installation procedure.
If a phase change material is used with the heat sink, unhook the hook plate from the anchor pin first. Warm the heatsink with a heat gun until the phase change temperature is reached. Gently remove the heat sink with a twisting motion. If the heat sink has to be re-installed, completely remove the phase change material from the heatsink and device before installing a fresh piece of phase change material.

6. Standard QuickSet Heat Sinks

Shoulder Screw Alpha offers the following standard QuickSet heat sinks:

Alpha can customize the QT series. Hole locations, overall height, etc.. can be changed without the need for a tooling/NRE fee. Please choose the heatsink and provide customization details to Alpha Sales.

Heat Sink Attachment
Test Report (Shock and Vibration)

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© 2011 Alpha Novatech, Inc.