overviewtechnical dataPDF data sheet
Low profile safety transformer
according to IEC/EN61558-2-6 suitable for general applications with double or reinforced insulation – max. output voltage: 50 V. E.g. electrical isolation for use in devices, built according to VDE0805/EN60950 regulations.
Specifications
- Ultra flat PDB type transformers for use in ultra small power supplies; current- or voltage transformer versions on request.
- Height: 15 mm only, max. power: 1.05 VA.
- Short-circuit proof constructionTransformer completely sealed with polyurethane varnish in polyamide mold
- PTF-UI21 transformers can be customer-specified, e.g. output characteristics, temperature rise for nominal operation/ open-circuit etc.
1 phase safety transformer PCB version according to IEC/EN61558-2-6
| Input voltage | 230V | |
| Output voltage | … 24V | |
| Frequency | 50/60 Hz | |
| Max. Power | 0,1 … 1,05VA (convection is obligatory) | |
| Max. ambient temperature | 40°C | |
| UL-Insulation system (optional) | OBJY2.E181051 |  |
| Insulation class (IEC85) | B 130°C |  |
| Fire protection class | UL94HB (V-0 possible) | |
| Protection class (ready) | III | |
| Connections: Solder pins | diameter ø 0.6 mm for type UI21/7.3.
rectangular shape 0.6 x 0.8 mm for type UI21/6.6 |
- extremly low profile
- Any mounting position or angle possible
- completely sealed with polyurethane varnish in polyamide mold
Ue = Rated input voltage (50/60Hz)
Ua = Rated output voltage
Uk = Short circuit voltage in %
Ua empty = No-load voltage
dT = Increase of temperature compared to the ambient temperature
| Ue V |
Ua V |
Rated power VA |
Uk % |
Ua empty at Ue Rated (V) |
Ua empty at Ue x 1.06 (V) |
dT Open-circuit at Ue Rated (K) |
dt Open-circuit at Ue x 1.06 (K) |
dT Rated load at Ue Rated (K) |
dT Rated load at Ue x 1.06 (K) |
Copper Weight KG |
Total weight KG |
Core Size | Type |
| 230 | 7,5 | 0,9 | 48 | 14,4 | 14,7 | 28 | 39 | 28 | 32 | 0,058 | 0,12 | UI21/6,6 | PTF009230007 |
| 230 | 9,5 | 0,9 | 49 | 19,7 | 20,3 | 29 | 39 | 30 | 35 | 0,058 | 0,12 | UI21/6,6 | PTF009230009 |
| 230 | 12,0 | 0,9 | 47 | 22,1 | 22,6 | 28 | 39 | 25 | 30 | 0,058 | 0,12 | UI21/6,6 | PTF009230012 |
| 230 | 15,0 | 0,9 | 47 | 28,3 | 28,9 | 27 | 39 | 27 | 30 | 0,058 | 0,12 | UI21/6,6 | PTF009230015 |
| 230 | 18,0 | 0,9 | 48 | 35,9 | 36,9 | 28 | 38 | 29 | 32 | 0,058 | 0,12 | UI21/6,6 | PTF009230018 |
| 230 | 24,0 | 0,9 | 47 | 45,9 | 46,9 | 29 | 39 | 28 | 31 | 0,058 | 0,12 | UI21/6,6 | PTF009230024 |
| 230 | 2×7,5 | 0,9 | 47 | 2×14,2 | 2×14,5 | 27 | 39 | 27 | 30 | 0,058 | 0,12 | UI21/6,6 | PTF0092300072 |
| 230 | 2×9,5 | 0,9 | 47 | 2×18,0 | 2×18,4 | 28 | 39 | 27 | 30 | 0,058 | 0,12 | UI21/6,6 | PTF0092300092 |
| 230 | 2×12,0 | 0,9 | 47 | 2×23,0 | 2×23,5 | 29 | 39 | 28 | 31 | 0,058 | 0,12 | UI21/6,6 | PTF0092300122 |
| 230 | 7,5 | 1,05 | 48 | 15,4 | 15,8 | 29 | 39 | 32 | 36 | 0,065 | 0,12 | UI21/7,3 | PTF01,230007 |
| 230 | 9,5 | 1,05 | 45 | 17,6 | 18,1 | 29 | 39 | 28 | 32 | 0,065 | 0,12 | UI21/7,3 | PTF010230009 |
| 230 | 12,0 | 1,05 | 49 | 24,9 | 25,5 | 29 | 40 | 32 | 35 | 0,065 | 0,12 | UI21/7,3 | PTF010230012 |
| 230 | 15,0 | 1,05 | 45 | 26,5 | 27,1 | 29 | 40 | 26 | 31 | 0,065 | 0,12 | UI21/7,3 | PTF010230015 |
| 230 | 18,0 | 1,05 | 46 | 32,0 | 32,7 | 29 | 40 | 27 | 30 | 0,065 | 0,12 | UI21/7,3 | PTF010230018 |
| 230 | 24,0 | 1,05 | 43 | 41,5 | 42,4 | 29 | 40 | 26 | 30 | 0,065 | 0,12 | UI21/7,3 | PTF010230024 |
| 230 | 2×7,5 | 1,05 | 45 | 2×13,3 | 2×13,6 | 29 | 40 | 26 | 31 | 0,065 | 0,12 | UI21/7,3 | PTF0102300072 |
| 230 | 2×9,5 | 1,05 | 45 | 2×17,2 | 2×17,6 | 29 | 40 | 27 | 31 | 0,065 | 0,12 | UI21/7,3 | PTF0102300092 |
| 230 | 2×12,0 | 1,05 | 43 | 2×20,8 | 2×21,2 | 29 | 40 | 26 | 30 | 0,065 | 0,12 | UI21/7,3 | PTF0102300122 |