1
Pulse Transformers IT
www.schurter.com/PG85
EMC Products
Pulse transformers for THT mounting
Description
- High insulation rating (>3.2 kVAC) between the primary and the secon-
dary windings
- High insulation rating up to 500V between the secondary windings
- Small coupling capacitances between primary and secondary windings
limit transient feedback from the power supply side to the control elec-
tronics
- The defined partial discharge voltage guarantees an effecively unlimited
serviceable live
Standards
- VDE 110b
Applications
- Galvanic separation of drive- and power-circuit
- Mainly used in ignition circuits with Thyristors, Triacs, power transistors
and IGBT's
- DC/DC converters
- Line coupling transformers in high speed data transmission
Weblinks
pdf-datasheet, html-datasheet, General Product Information, Approvals,
CE declaration of conformity, RoHS, CHINA-RoHS, REACH, e-Shop,
SCHURTER-Stock-Check, Distributor-Stock-Check, Detailed request for
product
Technical Data
Rated voltage up to 600 VAC
Voltage Time Integral 150 - 400 Vµs
Pulse Rise Time 0.05 - 1.5 µs
Turns Ratio 1:1, 2:1, 1:1:1
Terminal technic THT
Weight 6 - 11 g
Material: Housing UL 94V-0
Sealing Compound UL 94V-0
Climatic Category 25/100/21 acc. to IEC 60068-1
Allowable Operation Temp. -25 °C to 100 °C
Dimension
Case 35-3
max. 13
max. 15.2
max. 10.6
1.8
0.45x0.66
10.2±0.2
3.5 0
–0.5
2
12.7±0.2
1
1)
5.1±0.2
45
Case 35-4
max. 13
max. 15.2
max. 10.6
1.8
0.45x0.66
3.5 0
–0.5 10.2±0.2
2
12.7±0.2
1
1)
5.1±0.2
45
36
1) Prim.
2
Pulse Transformers
IT www.schurter.com/PG85
EMC Products
Case 39-3
max. 22.3
max. 22.7
max. 13.6
2
0.6x0.88
15±0.2
3.5 0
–0.5
2
20 ±0.2
1
1)
5±0.2
45
Case 39-4
max. 22.3
max. 22.7
max. 13.6
2
0.6x0.88
3.5 0
–0.5 15±0.2
2
20 ±0.2
1
1)
5±0.2
45
36
1) Prim.
Case 49-3
max.17.8
max. 18.2
max. 13
2.2
21
1)
45
0.6x0.88
5±0.2
3.5 0
–0.5 10±0.2
15±0.2
1) Prim.
Case 49-4
max.17.8
max. 18.2
max. 13
2.2
0.6x0.88
3.5 0
–0.5
21
1)
46
5±0.2
10±0.2
15±0.2
35
1) Prim.
Diagrams
IT 1:1:1
Firing of antiparallel Thyristors (SCR's) by means of unijunction and transistor am-
plifiers
IT 1:1
Triac phase angle control
3
Pulse Transformers IT
www.schurter.com/PG85
EMC Products
All Variants
Turns Ratio T
r [μs] Iign [A] Uisol
[kV]
Us x Tw
[Vμs]
Ls [mH] RP [Ω] RS [Ω] CC [pF] Weight [g] Packing unit [pcs.] Housing Order Number
1:1 0.05 0.1 3.2 200 2.8 1.5 1 43/80 8 g 480 35-3 ITRA-0235-D103
1:1 0.9 0.1 3.5 200 2.8 1 1 20 8 g 480 35-3 ITNA-0235-D103
1:1 0.1 0.5 3.2 400 2.2 0.4 0.4 100 11 g 140 39-3 ITRA-0239-D502
1:1 1 0.17 3.5 400 2.2 0.4 0.4 20 11 g 140 39-3 ITNA-0239-D202
1:1 0.05 0.1 3.2 300 3.5 0.7 0.7 90 9 g 45 49-3 ITRA-0249-D104
1:1 1 0.1 3.5 300 3.5 0.7 0.7 20 9 g 45 49-3 ITNA-0249-D104
1:1:1 0.05 0.1 3.2 150 1.1 1 0.5 40 8 g 480 35-4 ITRF-0235-D101
1:1:1 0.5 0.5 3.2 350 1.6 0.4 0.4 90 10 g 140 39-4 ITRF-0239-D502
1:1:1 1.5 0.17 3.5 350 1.6 0.4 0.4 20 10 g 140 39-4 ITNF-0239-D202
1:1:1 1 0.1 3.5 250 1.4 0.5 0.5 20 9 g 45 49-4 ITNF-0249-D101
2:1 0.5 0.5 3.2 350 1.8 0.8 0.4 90 9 g 140 39-3 ITRB-0239-D502
2:1 0.05 0.1 3.2 250 1.4 1 0.5 70 9 g 45 49-3 ITRB-0249-D101
2:1 1 0.1 3.5 250 1.6 1 0.5 20 6 g 45 49-3 ITNB-0249-D101
Availability for all products can be searched real-time:http://www.schurter.com/en/Stock-Check/Stock-Check-SCHURTER
The specifications, descriptions and illustrations indicated in this document are based on current
information. All content is subject to modifications and amendments. Information furnished is believed
to be accurate and reliable. However, users should independently evaluate the suitability and test each
product selected for their own applications.
03.03.2015
Mouser Electronics
Authorized Distributor
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Schurter:
ITNA-0235-D103 ITNA-0239-D202 ITNA-0249-D104 ITNB-0239-D202 ITNB-0249-D101 ITNF-0135-D101 ITNF-
0239-D202 ITNF-0249-D101 ITRA-0235-D103 ITRA-0239-D502 ITRA-0249-D104 ITRB-0239-D502 ITRB-0249-
D101 ITRF-0235-D101 ITRF-0239-D502 ITRF-0249-D101