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T R A N S F O R M E R S
An attention matter on use
Please read this specifications before using this product by all means.
An attention matter on security
I undertake use with this product, and it is paid attention enough, and please design an attention matter safely.
Attention on a design
When you designs a base of an electric circuit.
Please use size of the hole or pad which we recommend.
Magnetic flux to leak out occurs. Please confirm it about influence of magnetic flux beforehand.
There is fear to cause false movement of machinery.
In a design of a base of an electric circuit, Please consider the next contents.
In an applied safe standard.
The trans and distance with other parts
The product is not quakeproof structure.
Accordingly please do not add vibration and a shock to it.
There is fear to lose a function.
Attention on the handling
Please do not use it when you let a product drop.
The product produces possibility to lose a function
Please pay attention to the pin which had it pointed keenly.
There is danger to injure.
Please avoid the next place. The place that receives a drop of water, trash, the dust, foggy influence. The place where direct rays of the sun hits. There is
fear to cause false movement of machinery.
Please prohibit safekeeping and use at the next place. Environment to be accompanied with gas corrosion, salt, acid, alkali. There is fear to lose a
function.
When you carry the product on a base of an electric circuit.
Please do not use a metal tool. Because impossible power is added to a product.
There is fear to lose a function.
Attention
I considered the next matter, and we designed a product.
Safe standard and power supply voltage and circuit drive condition, drive frequency and Duty ON-TIME.
By those conditions, we decided structure and the turns number.
Please avoid use in designed condition outside.
There are destruction of a circuit part and fear of ignition.
This product considered a characteristic of a component and a self temperature rise, and it was made.
We select range of humidity as use temperature already.
Please avoid use by range more than this.
There are the damage and fear of ignition.
Please avoid use in the environment next.
The environment that trash and the dust stick to a product. There is fear to cause a fire.
The products listed on this specification sheet are intended for use in general electronic equipment (AV equipment, telecommunications equipment,
home appliances, amusement equipment, computer equipment, personal equipment, office equipment, measurement equipment, industrial robots)
under a normal operation and use condition.
The products are not designed or warranted to meet the requirements of the applications listed below, whose performance and/or quality require a more
stringent level of safety or reliability, or whose failure, malfunction or trouble could cause serious damage to society, person or property.
If you intend to use the products in the applications listed below or if you have special requirements exceeding the range or conditions set forth in this
catalog, please contact us.
(1) Aerospace/Aviation equipment
(2)Transportation equipment (cars, electric trains, ships, etc.)
(3) Medical equipment
(4) Power-generation control equipment
(5) Atomic energy-related equipment
(6) Seabed equipmentapplications
(7) Transportation control equipment
(8) Public information-processing equipment
(9) Military equipment
(10) Electric heating apparatus, burning equipment
(11) Disaster prevention/crime prevention equipment
(12) Safety equipment
(13) Other applications that are not considered general-purpose
applications
When designing your equipment even for general-purpose applications, you are kindly requested to take into consideration securing protection circuit/device
or providing backup circuits in your equipment.
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T R A N S F O R M E R S
Choke Coils for PFC
PFC series
Contents
Page
Development Concept .................................................................................... 4
Overview.........................................................................................................5
PFC3514QM（Height from the board：15.5mm）
.......................................... 6
PFC3318QM（Height from the board：20mm）
............................................. 8
PFC3519QM（Height from the board：20mm）
........................................... 10
PFC3819QM（Height from the board：20mm）
........................................... 12
PFC4124QM（Height from the board：25mm）
........................................... 14
PFC2723ER（Height from the board：25mm）
............................................ 16
PFC3125ER（Height from the board：27mm）
............................................ 18
PFC3525ER（Height from the board：27mm）
............................................ 20
PFC3820QN (Height from the board: 50mm Narrow floor space）
............... 22
PFC3831QN (Height from the board: 50mm Narrow floor space）
............... 24
Specification Request Form ......................................................................... 26
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
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T R A N S F O R M E R S
Choke Coils for PFC
Pin terminal type
Development Concept of the PFC series
This is a power - factor improvement circuit for choke coils for smaller, thinner and narrow floor space in recent years electronic
equipment.
MATERIAL
Thanks to the development of an optimized core shape and materials, the choke coil has DC superimposition characteristics suitable for
the design of various types of electronic devices.
Optimized materials have been selected, and at the same time the original core shape for PFC has been developed.
The product line-up has been expanded to cater for various types of electronic devices that need to become smaller, thinner and narrow
floor space.
MANUFACTURING METHOD
Since the PFC 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
While the existing line-up of standard products remains available, new products can also be manufactured to meet customers' requests.
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 (A
L
-value) for optimization and shorter trial and mass production lead time.
ENVIRONMENT
The PFC series is RoHS directive-compliant product.
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
20160929 / trans_pfc-choke_pfc_en
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T R A N S F O R M E R S
Choke Coils for PFC
Pin terminal type
Product compatible with RoHS directive
Compatible with lead-free solders
Overview of the PFC series
FEATURES
A low height(15.5 to 27mm in height) and narrow floor space(QN type) are achieved.
Large current is achieved in a small shape.
APPLICATION
AV equipment, digital consumer electronics
PART NUMBER CONSTRUCTION
PFC
Series name
3514QM -
Core shape
PFC3514QM
PFC3318QM
PFC3519QM
PFC3819QM
PFC4124QM
PFC2723ER
PFC3125ER
PFC3525ER
PFC3820QN
PFC3831QN
351
Inductance
code
350 35µH (35x10
0
)
351 350µH (35x10
1
)
352 3500µH(35x10
2
)
K
Inductance
tolerance
K
±10%
07
Rated Peak
current code
1
01
1A
07
7A
10
10A
E-**
Internal code
1
The rounded-off value.
OPERATING TEMPERATURE RANGE, PACKAGE QUANTITY, PRODUCT WEIGHT
Temperature range
Operating
Storage
Type
2
temperature
temperature
3
（°C）
（°C）
PFC3514QM
–30 to +120
–40 to +80
PFC3318QM
–30 to +120
–40 to +80
PFC3519QM
–30 to +120
–40 to +80
PFC3819QM
–30 to +120
–40 to +80
PFC4124QM
–30 to +120
–40 to +80
PFC2723ER
–30 to +120
–40 to +80
PFC3125ER
–30 to +120
–40 to +80
PFC3525ER
–30 to +120
–40 to +80
PFC3820QN
–30 to +120
–40 to +80
PFC3831QN
–30 to +120
–40 to +80
2
Operating temperature range includes self-temperature rise.
3
The Storage temperature range is for after the circuit board is mounted.
4
Typical weight.
Package quantity
（pieces/box）
175
140
140
100
90
150
120
120
105
63
Individual weight
4
（g）
40.0
27.6
50.3
60.5
91.9
34.1
49.7
57.3
71.9
115.3
RoHS Directive Compliant Product: See the following for more details.https://product.tdk.com/info/en/environment/rohs/index.html
Please be sure to request delivery specifications that provide further details on the features and specifications of the products for proper and safe use.
Please note that the contents may change without any prior notice due to reasons such as upgrading.
20160929 / trans_pfc-choke_pfc_en
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