  CST Series –
High Frequency
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New RoHS part numbers are shown. Lead was removed from terminations. The second to the last character is now L to indicate RoHS compliance. (View old data sheet.) |
- Senses current to greater than 10 Amps
- For use between 50 kHz to 1 MHz
- 500 V isolation winding to winding
- 8 different turns ratios to meet variety of requirements
- 2 pin-out configurations for different applications
- RoHS-compliant. 260°C compatible. Tin-silver over tin over nickel over phos bronze terminations
- Two samples of each value are available in Coilcraft Designer's Kit C389
Photo 
Pricing 
Materials declaration CST1
CST2
PDF data sheet
SPECIFICATIONS
Typical
Circuits
Dimensions 
Temperature
vs Current
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| CST1-020L_ | 1 : 20 | 81 | 0.0007 (8-7) | 0.400 (6-4) | 10 | 2.0 | 16 | Red |
| CST1-030L_ | 1 : 30 | 180 | 0.0007 (8-7) | 0.870 (6-4) | 10 | 3.0 | 24 | Orange |
| CST1-040L_ | 1 : 40 | 320 | 0.0007 (8-7) | 1.140 (6-4) | 10 | 4.0 | 32 | Yellow |
| CST1-050L_ | 1 : 50 | 500 | 0.0007 (8-7) | 1.500 (6-4) | 10 | 5.0 | 41 | Green |
| CST1-060L_ | 1 : 60 | 730 | 0.0007 (8-7) | 1.980 (6-4) | 10 | 6.0 | 49 | Blue |
| CST1-070L_ | 1 : 70 | 980 | 0.0007 (8-7) | 4.750 (6-4) | 10 | 7.0 | 57 | Violet |
| CST1-100L_ | 1 : 100 | 2000 | 0.0007 (8-7) | 5.500 (6-4) | 10 | 10.0 | 81 | Gray |
| CST1-125L_ | 1 : 125 | 3000 | 0.0007 (8-7) | 6.500 (6-4) | 10 | 12.5 | 101 | Black |
| CST2-020L_ | 1 : 20 | 81 | 0.0007 (8-7) | 0.400 (1-3) | 10 | 2.0 | 16 | Red |
| CST2-030L_ | 1 : 30 | 180 | 0.0007 (8-7) | 0.870 (1-3) | 10 | 3.0 | 24 | Orange |
| CST2-040L_ | 1 : 40 | 320 | 0.0007 (8-7) | 1.140 (1-3) | 10 | 4.0 | 32 | Yellow |
| CST2-050L_ | 1 : 50 | 500 | 0.0007 (8-7) | 1.500 (1-3) | 10 | 5.0 | 41 | Green |
| CST2-060L_ | 1 : 60 | 730 | 0.0007 (8-7) | 1.980 (1-3) | 10 | 6.0 | 49 | Blue |
| CST2-070L_ | 1 : 70 | 980 | 0.0007 (8-7) | 4.750 (1-3) | 10 | 7.0 | 57 | Violet |
| CST2-100L_ | 1 : 100 | 2000 | 0.0007 (8-7) | 5.500 (1-3) | 10 | 10.0 | 81 | Gray |
| CST2-125L_ | 1 : 125 | 3000 | 0.0007 (8-7) | 6.500 (1-3) | 10 | 12.5 | 101 | Black |
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| 1 | When ordering, please specify packaging code: e.g. CST1-125LC or CST2-125LC | |
| Packaging |
C = 7" machine-ready reel |
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| 2 | Inductance measured across secondary at 100 kHz, 0.1 Vrms. | |
| 3 | Primary current of 10 A causes approximately 25°C temperature rise above 25°C ambient. Higher current causes a greater temperature rise (see Temperature Rise vs Current curve). | |
| 4 | Terminating resistor value is based on 1 Volt output with 10 Amps flowing through the primary. Varying terminating resistance increases or decreases output Voltage/Ampere according to
the following equation: RT (Ohms) = Vout × Nsec / Iin. |
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| 5 | Maximum volt-time product for the secondary. | |
| 6 | Ambient temperature range: | –40°C to +125°C |
| 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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