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Accessory - QSZ clip

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Introduction

QSZ

Anchors (left photo) are mounted to the PCB. QSZ clips (right photo) secure the heat sink to the anchors. The PCB thickness and anchor pitch dimensions will vary for each board/layout. Please use the following guidelines to choose the appropriate QSZ clip, Anchor, and Heatsink for your application.

QSZ Clip Anchor Pin

Index

Installation Procedure

Guidance for installing procedure

1. Insert anchor pins

1. Align the heat sink with the chip and anchor pins.

1-1. Inspect anchor pins

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

2. set heatsink

2. Gently place the heatsink on the top of the chip.

3. Set clip

3. Attach one end of the clip’s hook plate to the anchor pin. Attach the hook plate by bringing it in from the outside and locking it into the pin.
(follow arrow direction)

4. Reverse side

4. While applying light pressure to the heat sink to keep it level, lock in the hook plate on the opposite side.

4-1. Press

4-1. Detail of locking procedure:Push the hook plate down.

4-2. Lock

4-2. Slide the hook plate in, toward the anchor pin. Make sure the hook plate slides in under the anchor pin head. Release the hook plate, locking it in place. Inspect the hook plate and pin head to ensure the hook plate is firmly seated and locked.

5. Done

5. Done!



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QSZ Clip Specification

Anchor pitch dimensions

The following is a list of our standard QSZ clips. Please try to use one of these standard patterns. If necessary, a custom clip layout can be created.
These specifications should be treated as reference guidelines. Please install the selected heat sink, anchor pin, and QSZ clip combination on your board to ensure that the anchor locations will work with your application.

For corporate customers, we can produce custom clips. Please contact us for details.

QSZ Clip Model
 Anchor Pitch DimensionsDrawing
3D CAD
QSZ39X39 Anchor Position:39x39 DXF file (22KB)
PDF file (41KB)
QSZ39X39R Anchor Position:39x39R DXF file (22KB)
PDF file (43KB)
QSZ44X44 Anchor Position:44x44 DXF file (22KB)
PDF file (40KB)
QSZ44X44R Anchor Position:44X44R DXF file (22KB)
PDF file (43KB)
QSZ49X49 Anchor Position:49X49 DXF file (22KB)
PDF file (41KB)
QSZ49X49R Anchor Position:49X49R DXF file (23KB)
PDF file (43KB)
QSZ54X54 Anchor Position:54X54 DXF file (23KB)
PDF file (41KB)
QSZ54X54R Anchor Position:54X54R DXF file (23KB)
PDF file (45KB)
QSZ58X58 Anchor Position:58X58 DXF file (23KB)
PDF file (42KB)
QSZ58X58R Anchor Position:58X58R DXF file (23KB)
PDF file (46KB)
QSZ64X64 Anchor Position:64X64 DXF file (23KB)
PDF file (42KB)
QSZ64X64R Anchor Position:64X64R DXF file (23KB)
PDF file (47KB)

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Anchor Specification

We currently offer two anchor pin lengths.
The pin length can be used with different PCB thicknesses and chip heights to adjust the clip attachment force:

Anchor Pin
Model Name Drawing
3D CAD		 Notes
ANCR-11 DXF file (13KB)
PDF file (30KB)
  • No soldering attachment
ANCR-13 DXF file (13KB)
PDF file (32KB)

Pairing table with Standard Heat Sinks

Note: In some cases, the clip may not be able to contact the exact center of a particular heat sink. This will depend on the fin pattern, airflow direction, and other factors. Please refer to the following table.

This table only lists the physical dimensions as OK or not OK. Please consult Choosing a heat sink to determine if the heat sink will meet the thermal requirements.

QSZ Clip H QSZ Clip V Explanation of this table
This table displays heat sink and QSZ clip pairings based on the direction of clip attachment. With the V type, the QSZ clip runs perpendicular (opposite) of airflow/fin direction (left photo). The H type runs parallel (inline) with the airflow/fin direction (right photo). Please refer to the photos and check the airflow direction prior to pairing selection.

The meaning of each Symbol

Symbol Description
OK QSZ clip can be assembled at the center of Heat sink.
! QSZ clip can NOT be assembled at the center of Heat sink. We do not recommend this attachment in the case of a "V" type. The clip pressure point would be too far from the center.
Blank QSZ clip can not be used at all.
* Due to installation difficulty, we do not recommend the use of QSZ clips on these series heat sinks if they are taller than 15mm.

Please click TDMODEL number for detail information such as specification, performance data.

QSZ39x39
QSZ39x39R		 QSZ44x44
QSZ44x44R		 QSZ49x49
QSZ49x49R		 QSZ54x54
QSZ54x54R		 QSZ58x58
QSZ58x58R		 QSZ64x64
QSZ64x64R
V H V H V H V H V H V H
LPD19 OK* ! OK* ! OK* ! OK* ! OK* ! OK* !
LPD25 ! ! ! ! ! !
LPD30 OK OK OK OK OK OK
LPD35 ! ! ! ! ! !
LPD40 OK OK OK OK OK
LPD45 OK ! OK ! OK ! OK !
LPD50 OK OK OK
LPD54 ! !
LPD60 OK OK
MD30 OK OK OK OK OK OK
MD35 ! ! ! ! ! !
MD40 OK OK OK OK OK
MD45 OK ! OK ! OK ! OK !
MD50 ! ! !
MD54 OK OK
MD60 OK !
W15 OK* ! OK* ! OK* ! OK* ! OK* ! OK* !
W30 OK OK OK OK OK OK
W35 OK OK OK OK OK OK
W40 OK OK OK OK OK OK OK OK OK OK
W45 OK OK OK OK OK OK OK OK
W48 OK ! OK ! OK !
W54 ! !
W60 !
QSZ39x39
QSZ39x39R		 QSZ44x44
QSZ44x44R		 QSZ49x49
QSZ49x49R		 QSZ54x54
QSZ54x54R		 QSZ58x58
QSZ58x58R		 QSZ64x64
QSZ64x64R
V H V H V H V H V H V H
UB10 OK OK OK OK OK OK
UB19 OK* ! OK* ! OK* ! OK* ! OK* ! OK* !
UB25 OK* OK OK* OK OK* OK OK* OK OK* OK OK* OK
UB30 OK OK OK OK OK OK
UB35 OK OK OK OK OK !* OK
UB40 OK* ! OK* ! OK* ! OK* ! OK* !
UB45 OK* ! OK* ! OK* ! OK* !
UB48 OK* ! OK* ! OK* !
UB50 OK* ! OK* ! OK* !
UB54 ! !
UB60 !
UBC60 !
Z/T/ST QSZ clip can not be used for Z / T / ST series.
S1519 ! ! ! ! ! ! ! ! ! ! ! !
S1525 ! ! ! ! ! ! ! ! ! ! ! !
S1530 OK OK OK OK OK OK OK OK OK OK OK OK
S1535 ! ! ! ! ! ! ! ! ! ! ! !
S1540 ! ! ! ! ! ! ! ! ! !
S1545 ! ! ! ! ! ! ! !
S1550 OK OK OK OK OK OK
S1555 ! ! ! !
S1560 OK OK
N19 ! ! ! ! ! ! ! ! ! ! ! !
N25 ! ! ! ! ! ! ! ! ! ! ! !
N30 ! ! ! ! ! ! ! ! ! ! ! !
N35 ! ! ! ! ! ! ! ! ! ! ! !
N40 ! ! ! ! ! ! ! ! ! !
N45 ! ! ! ! ! ! ! !
N50 ! ! ! ! ! !
N54 ! ! ! !
N60 ! !
CS40 OK OK OK OK OK OK OK OK OK OK
CS45 OK OK OK OK OK OK OK OK

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Clip load on Heat Source

The clip load on the heat source can be calculated from the following graph. Please note that this data is just for reference. Unknown dimensions and tolerances can significantly affect the load on the heat source.

1st, Calculate X value of graph, using the formula below the graph.
2nd, Y value (Clip load) can be found from the intersection of "X value" and "QSZ clips performance line".

Clip load chart

Related Information

Heat Sink Attachment
Shock and Vibration Test

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