 
Miniature Step-Up Flyback Transformers – LPR4012
- Perfect for low voltage step-up in energy harvesting applications
- Different turns ratios for a variety of voltage step-up and step-down applications.
- Coupled, low profile shielded power inductor
– only 1,1 mm
high, 4 mm square
- Excellent coupling coefficient: K > 0.95
- Uses: flyback transformers in DC-DC converters; coupled inductors in buck regulators to provide multiple outputs; autotransformers
- 100 V winding-to-winding isolation
- RoHS-compliant. 260°C compatible.
Silver-palladium-platinum-glass frit terminations
- COTS Plus tin-silver-copper and tin-lead terminations available
Photo 
Pricing  Materials declaration 
PDF data sheet
SPECIFICATIONS
 Current Derating  Schematics 
Dimensions
Tape and reel specifications  3D model
| 1 |
When
ordering, please specify termination and packaging codes: e.g.
LPR4012-223DMLC |
|
|
Termination: |
L = Silver-palladium-platinum-glass frit
Special order, added cost: T = RoHS tin-silver-copper (95.5/4/0.5) or
S = non-RoHS tin-lead (63/37). |
|
Packaging:
|
C = 7"
machine-ready reel
EIA-481 embossed plastic tape 1000 parts per full reel).
B = Less than full reel
In tape, but not machine-ready. To have a leader and trailer added ($25 charge),
use code letter C instead.
D = 13" machine-ready reel
EIA-481 embossed plastic tape. Factory order only, not stocked (3500 parts
per full reel). |
| 2 |
Inductance is measured at 100 kHz, 0.1 Vrms, 0 Adc on an Agilent/HP 4284A LCR meter or equivalent. |
|
3 |
SRF measured using an Agilent/HP 4191A or equivalent. When leads are connected in parallel, SRF is the same value. |
|
4 |
Isat:
DC current applied to L1 at which the inductance drops the specified amount from its value without current. |
| 5 |
Irms: Current applied to L1 that causes the specified temperature rise from 25°C ambient. |
| 6 |
Ambient temperature range: |
–40°C to +85°C with Irms current.
+85°C to +125°C with derated current. Derating curve |
| 7 |
Storage temperature range: |
Component: –40°C to +125°C
T&R packaging: –40°C to +80°C |
| 8 |
Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between. |
| 9 |
Electrical specifications at 25°C. |
| Refer to Soldering Coilcraft Components before soldering. |
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