B82805 Datasheet, PDF (4/7 Pages) TDK Electronics – SMT Push-Pull Transformers

SMT Push-Pull Transformers
E 6.3 Core
B82805
Technical data and measuring conditions
specified @ +25 °C if not mentioned otherwise, all values without tolerance are typical values
Typical Switching frequency
> 250 kHz
High voltage: primary - secondary 500 V AC, 1 s
Inductance L (1-2)
Measured at terminals 1, 2,
measuring conditions 50 kHz, 100 mV
Inductance tolerance
+40/−30%
Resistance to reflow soldering
heat
In accordance with JEDEC J-STD-020D
+245 °C for 10 seconds (2 cycles)
Operating temperature range
−25 °C … +125 °C (component)
Weight
Approx. 0.6 g
=
×
×
With:
Maximum magnetic flux density in the ferrite core of the push-pull transformer
Voltage on primary side
t on time
Number of turns of the primary winding of the push pull transformer
Effective magnetic area of the ferrite core
Typical value for E6.3 core : 3.3 x 10-6 m²
Typical ∆ : < 760 mT (bipolar drive @+25 °C)
Typical ∆ : < 460 mT (bipolar drive @+120 °C)
Characteristics and ordering codes
Turns ratio
N1:N2:N3:N4
1:1:1.7:1.7
1:1:1.1:1.1
1:1:1.1:1.1
1:1:3.8:3.8
1:1:2.6:2.6
∫Vdt
V · µs
+25 °C
bipolar
25
37
42
12.5
17.6
∫Vdt
V · µs
+120 °C
bipolar
15
23
26
7.6
10.6
Example
3.3 V → 5 V
5V→5V
12 V → 12 V
3.3 V → 12 V
5 V → 12 V
L (1-2)
µH
36
77
94
9.5
17
Ordering Code
B82805A0363A250
B82805A0773A250
B82805A0943A250
B82805A0952A250
B82805A0173A250
MAG TF T PD
Please read Cautions and warnings and
Important notes at the end of this document.
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2015-09-25