Document
LLC Resonance Power Transformers
Pin terminal type
SRX series
Type: Issue date:
SRX45EM(Drop-in) SRX38EM(Drop-in) SRX43EM(Drop-in/Through hole) SRX30ER(Through hole) SRX35ER(Through hole) SRX38ER(Through hole) SRX48EM(Through hole) SRX40ER(Through hole)
September 2010
• All specifications are subject to change without notice. • Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific
bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
LLC Resonance Power Transformers SRX Series
Contents
Page
Development Concept ................................................................1 Replacement Parts List ..............................................................2 SRX45EM (Height from the board: 8mm)...................................4 SRX38EM (Height from the board: 10mm).................................5 SRX43EM (Height from the board: 10mm, 15mm).....................6 SRX30ER (Height from the board: 25mm, 27mm) ...................10 SRX35ER (Height from the board: 25mm) ...............................11 SRX38ER (Height from the board: 27mm) ...............................12 SRX48EM (Height from the board: 25mm)...............................13 SRX40ER (Height from the board: 31.5mm) ............................14
Design Reference for LLC Resonance Power Transformers ....15
Specification Request Form .....................................................16
• All specifications are subject to change without notice.
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LLC Resonance Power Transformer SRX Series
Conformity to RoHS Directive
Development Concept
Compliant with worldwide safety standards, this is a small and thin transformer with the advantages of effective use of low-loss ferrite material.
MATERIAL Optimized materials and core shapes have been developed. The necessary power can be transmitted with a small number of windings.
While optimizing materials, TDK has further improved its proprietary core shape to develop a new-type ECO core. The transformer has been downsized considerably, and its temperature increase has also been curbed.
MANUFACTURING METHOD Since the ECO Series supports automatic winding, the product is of a high quality and can be manufactured stably.
It is designed to support automatic winding, which enables a remarkable reduction in the loss generated to achieve a proficient in manual winding until stable production. In addition, the characteristic variations of the winding wire and creepage tape have largely been removed, stabilizing the transformer's characteristics.
OPTIMIZATION DESIGN Using design tools developed with TDK's comprehensive know-how, high-precision design has been achieved in a short period of time.
1) For optimization design and high-quality stable production, customers can use a specification request form. If you provide the necessary information in the form, you will receive the optimization design in a short time.
2) TDK recommends design with a standard core gap (AL-value) for optimization and shorter trial and mass production lead time. Design is simple as each shape retains its GAP, AL-value, and K parameters beforehand.
ENVIRONMENT The SRX series is RoHS directive-compliant product.
• Ferrite cores, bobbins, cases, etc. are not sold individually.
• Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and specific bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.
• All specifications are subject to change without notice.
003-02 / 20100924 / e636_srx.fm
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LLC Resonance Power Transformer SRX Series
Conformity to RoHS Directive
TDK now provides a characteristically thin resonance LLC resonance power transformer. In order to develop this transformer, TDK made effective use of low loss performance (which is a feature of the PC47 family), optimized the structure of the core and the bobbin, and utilized its proprietary automatic winding industrial method.
FEATURES • A low height (8 to 31.5mm in height) is achieved. • Large power is achieved in a small shape. • The automatic winding industrial method is adopted. • It is a product conforming to RoHS directive.
THROUGH HOLE TYPE
D H
APPLICATIONS AV equipment, digital consumer electronic
WW
PRODUCT IDENTIFICATION
SRX 30ER - P (1) (2) (3)
(4)
(5)
DROP-IN TYPE
D H
(1) Series name (2) Core size (3) Input voltage code (4) Output voltage code (5) Internal control code
ELECTRICAL CHARACTERISTICS
Part No.
SRX45EM SRX38EM
SRX43EM
SRX30ER
SRX35ER SRX38ER SRX48EM SRX40ER
Mount method∗1
Drop-in Drop-in Drop-in
Height H (mm)
7.7∗2 10
10
Frequency (kHz)min.
120 120
100
Through hole
Through hole Through hole Through hole Through hole Through hole Through hole Through hole
15
27 25 27 25 27 25 31.5
100
100
80 60 60 60
Maximum output power (W)max.
180 125
Number of .