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Accessory - Z-shaped clip

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Introduction

Anchor 1

Anchors (left photo) are mounted on the PCB. Z-shaped clips (middle photo) secure heat sink to anchors. The PCB thickness and anchor pitch dimensions will vary for each board/layout, so please review the following in order to choose the appropriate Z-shaped clip, Anchor, and Heatsink.

Z-Clip Anchor 2

Index

Z-Shaped Clip Specification

Anchor pitch dimensions

The following is a list of our standard Z-shaped clips. Check anchor pitch dimensions to choose the appropriate Z-clip. Also, if the anchor locations have not been determined, please use one of the following standard patterns.
The specifications for the anchor locations listed on our web site should be treated as reference guidelines. The appropriate anchor locations can vary depending on heat source height, heat sink base thickness, and the gap between fins. Please install the heat sink and Z-clip combination on your board to ensure that the anchor locations work with your application.

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

Z-Shaped Clip Model
 Anchor Pitch DimensionsDrawing
Z-CL35.5X48.2 Anchor Position:35.5x48.2 DXF file (22KB)
PDF file (42KB)
Z-CL35.5RX48.2 Anchor Position:35.5Rx48.2 DXF file (22KB)
PDF file (37KB)
Z-CL44.9X53.5 Anchor Position:44.9x53.5 DXF file (23KB)
PDF file (43KB)
Z-CL44.9RX53.5 Anchor Position:44.9Rx53.5 DXF file (22KB)
PDF file (36KB)
Z-CL48.2X60.9 Anchor Position:48.2x60.9 DXF file (23KB)
PDF file (43KB)
Z-CL48.2RX60.9 Anchor Position:48.2Rx60.9 DXF file (22KB)
PDF file (41KB)
Z-CL55.8X60.9 Anchor Position:55.8x60.9 DXF file (23KB)
PDF file (46KB)
Z-CL47.5Rx76.2 Anchor Position:47.5Rx76.2 DXF file (29KB)
PDF file (54KB)

Anchor Specification

ANC-D057
Model NamePCB Thickness
(mm)		 DrawingNotes
ANC-D057 1.6 PDF file (10KB)
  • Solder attachment
  • Requires holes in PCB

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, air 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.

Z-Clip H Z-Clip V Explanation of this table
This table displays heat sink and Z-clip pairings based on the direction of clip attachment. With the V type, the Z-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 Z-shaped clip can be assembled at the center of Heat sink.
! Z-shaped 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 Z-shaped clip can not be used at all.
* Due to installation difficulty, we do not recommend the use of Z clips on these series heat sinks if they are taller than 15mm.

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

Z-CL35.5x48.2
Z-CL35.5Rx48.2		 Z-CL44.9x53.5
Z-CL44.9Rx53.5		 Z-CL48.2x60.9
Z-CL48.2Rx60.9		 Z-CL55.8x60.9 Z-CL47.5Rx76.2
V H V H V H V H V H
LPD25 !* ! !* ! !* ! !* ! !* !
LPD30 ! 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
MD35 ! ! ! ! ! ! ! ! ! !
MD40 !* OK* ! OK ! OK ! OK ! OK
MD45 OK ! OK ! OK ! OK !
MD50 ! ! ! ! ! !
MD54 ! OK
MD60 OK !
W30 ! OK ! OK ! OK ! OK ! OK
W35 ! 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 ! !
Z-CL35.5x48.2
Z-CL35.5Rx48.2		 Z-CL44.9x53.5
Z-CL44.9Rx53.5		 Z-CL48.2x60.9
Z-CL48.2Rx60.9		 Z-CL55.8x60.9 Z-CL47.5Rx76.2
V H V H V H V H V H
UB25 OK* OK OK* OK OK* OK OK* OK OK* OK
UB30 !* OK !* OK !* OK !* OK !* OK
UB35 !* OK !* OK !* OK !* OK !* OK
UB40 OK* !* OK* ! OK* ! OK* ! OK* !
UB45 OK* ! OK* ! OK* ! OK* !
UB48 OK* OK OK* OK OK* OK
UB50 OK* OK OK* OK OK* OK
UB54 !* !
UB60 !* !
UBC60 !* !
Z/T/ST Z-shaped clip can not be used for Z / T / ST series.
S1525 ! ! ! ! ! ! ! ! ! !
S1530 OK OK OK OK OK OK OK OK OK OK
S1535 ! ! ! ! ! ! ! ! ! !
S1540 !* !* ! ! ! ! ! ! ! !
S1545 ! ! ! ! ! ! ! !
S1550 OK OK OK OK OK OK
S1555 ! !
S1560 OK OK
N25 ! ! ! ! ! ! ! ! ! !
N30 ! ! ! ! ! ! ! ! ! !
N35 ! ! ! ! ! ! ! ! ! !
N40 !* !* ! ! ! ! ! ! ! !
N45 ! ! ! ! ! ! ! !
N50 ! ! ! ! ! !
N54 ! !
N60 ! !
CS40 OK OK OK OK OK OK OK OK
CS45 OK OK OK OK OK OK OK OK

Clip load for Heat Source

Clip load for the heat source can be calculated by the following graph. Please note this data is just for reference. Unknown dimensions and tolerances can sifnificnatly affect the load on the heat source.

1st, Calculate X value of the below graph based on formula which is at the bottom of graph.
2nd, Y value (Clip load) can be found from the intersection of "X value" and "Z-clips performance line".

Clip load chart

Related Information

CS series (Chipset) Heat Sinks
Heat Sink Attachment
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