Datasheet - Dynex Semiconductor Ltd.

EM Heatsink
Aluminium air cooled heatsink fin
DS6123 Aug 2013 (LN30884)
FEATURES

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KEY PARAMETERS
Cut to length
Black anodisation option
Pre-machined features (custom)
Cross sectional area
Weight
Slot size
114.25 cm2
31 kg/m
M8
APPLICATIONS
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

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Trackside rectifiers
High power bridges
Puck style mounting
Single and double side cooling
EM fin is a tried and tested profile for many
applications which utilise press pack devices
Suitable for devices with pole faces up to
110mm (although 125mm can be
accommodated)
Fig. 1 Outline
ORDERING INFORMATION
Order As:
EMXXXX for natural aluminium extrusion where
XXXX is the length in mm
Or
EMBXXXX for black anodised extrusion
If special machining requirements are necessary
please find our contact details at
www.dynexassemblies.com
Fig. 2 Isometric view
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EM
RATINGS information
Steady State Thermal Impedance - Rth
EM Series Rth/Power
(fig 1)
0.2
0.19
0.18
0.17
200mm
0.16
300mm
0.15
400mm
0.14
500mm
0.13
0.12
0.11
1000W
900W
800W
700W
600W
500W
400W
300W
200W
0.1
Power - W
EM Series Rth/Airspeed
(fig 2)
Steady State Thermal Impedance - Rth
0.065
0.06
0.055
200mm
0.05
300mm
0.045
400mm
0.04
500mm
0.035
0.03
0.025
2.5
3.75
5
6.25
7.5
8.75
Air Speed - m/s
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10
11.25
12.5
EM
EM Series Rth/Length
Air Cooled (fig 3)
Steady State Thermal Impedance - Rth
0.23
0.21
200W
0.19
400W
0.17
600W
0.15
800W
0.13
1000W
0.11
0.09
150
200
250
300
350
400
450
500
Length - (mm)
EM Foced Cooled
(fig 4)
Steady State Thermal Impedance - Rth
0.07
0.065
0.06
2.5m/s
0.055
5m/s
0.05
0.045
7.5m/s
0.04
10m/s
0.035
12.5m/s
0.03
0.025
0.02
150
200
250
300
350
Length - mm
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400
450
500
EM
EM 300 (Transient thermal impedence curves)
Air Cooled (fig 5)
0.18
Thermal Impedance - (°C/W)
0.16
0.14
0.12
200W
400W
0.1
600W
0.08
800W
0.06
1000W
0.04
0.02
0
1
10
100
1000
10000
Time - seconds
Forced Cooled
(fig 6)
Thermal Impedance - (°C/W)
0.06
0.05
0.04
2.5m/s
5m/s
0.03
7.5m/s
10m/s
0.02
12.5m/s
0.01
0
1
10
100
1000
Time - seconds
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10000
EM
EM Series
Air Pressure Drop Double Side Cooled
(fig 7)
12
Pressure Drop - mm/water
10
8
200mm
300mm
6
400mm
500mm
4
2
0
0
2
4
6
8
Air Flow - m/s
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10
12
14
EM
IMPORTANT INFORMATION:
This publication is provided for information only and not for resale.
The products and information in this publication are intended for use by appropriately trained technical personnel.
Due to the diversity of product applications, the information contained herein is provided as a general guide only and does not constitute any
guarantee of suitability for use in a specific application.The user must evaluate the suitability of the product and the completeness of the product
data for the application. The user is responsible for product selection and ensuring all safety and any warning requirements are met. Should
additional product information be needed please contact Customer Service.
Although we have endeavoured to carefully compile the information in this publication it may contain inaccuracies or typographical errors. The
information is provided without any warranty or guarantee of any kind.
This publication is an uncontrolled document and is subject to change without notice. When referring to it please ensure that it is the most up to
date version and has not been superseded.
The products are not intended for use in applications where a failure or malfunction may cause loss of life, injury or damage to property. The
user must ensure that appropriate safety precautions are taken to prevent or mitigate the consequences of a product failure or malfunction.
The products must not be touched when operating because there is a danger of electrocution or severe burning. Always use protective safety
equipment such as appropriate shields for the product and wear safety glasses. Even when disconnected any electric charge remaining in the
product must be discharged and allowed to cool before safe handling using protective gloves.
Extended exposure to conditions outside the product ratings may affect reliability leading to premature product failure. Use outside the product
ratings is likely to cause permanent damage to the product. In extreme conditions, as with all semiconductors, this may include potentially
hazardous rupture, a large current to flow or high voltage arcing, resulting in fire or explosion. Appropriate application design and safety
precautions should always be followed to protect persons and property.
Product Status & Product Ordering:
We annotate datasheets in the top right hand corner of the front page, to indicate product status if it is not yet fully approved for production. The
annotations are as follows:Target Information:
Preliminary Information:
No Annotation:
This is the most tentative form of information and represents a very preliminary specification. No actual
design work on the product has been started.
The product design is complete and final characterisation for volume production is in progress.The
datasheet represents the product as it is now understood but details may change.
The product has been approved for production and unless otherwise notified by Dynex any product
ordered will be supplied to the current version of the data sheet prevailing at the time of our order
acknowledgement.
All products and materials are sold and services provided subject to Dynex’s conditions of sale, which are available on request.
Any brand names and product names used in this publication are trademarks, registered trademarks or trade names of their respective
owners.
HEADQUARTERS OPERATIONS
CUSTOMER SERVICE
DYNEX SEMICONDUCTOR LIMITED
Doddington Road, Lincoln, Lincolnshire, LN6 3LF
United Kingdom.
Phone: +44 (0) 1522 500500
Fax:
+44 (0) 1522 500550
Web: http://www.dynexsemi.com
Phone: +44 (0) 1522 502753 / 502901
Fax:
+44 (0) 1522 500020
e-mail: [email protected]
 Dynex Semiconductor Ltd.
Technical Documentation – Not for resale.
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