L18P Family
Linear Open Loop current sensors with 6 series with 10 models and 5 derivations for a total of 60 models.
- 1 series 10 types ; Corresponding Rated Current 3-60 A
- Series designed with compact pin layout and common board layout.
- Each series has common casting bobbin dimension with permalloy magnetic core.
| Series | Symbol | L18Pxxx D15 |
L18Pxxx D15-OP |
L18Pxxx D15AHV |
L18Pxxx S05 |
L18Pxxx S05R |
L18Pxxx S12 |
| Power supply voltage | Vcc | ±15V | +5V | +5V | +12V | ||
| Rated output voltage | Vo | 4V±0.040V (xxx:003-030) | Vof +1.5V±0.045V | Vof +0.625V±0.045V | Vof +1.5V±0.045V | ||
| Offset voltage | Vof | 0V±0.040V (3～30A) | Vcc/2 ±0.035V |
2.5V±0.035V | 2.5V±0.035V | ||
| Saturation current | Ifmax | ≧ If * 3 | ≧ If * 1.5 | ≧ If * 3 | ≧ If * 1.25 | ||
| Structure | Same structure / Same pattern layout | ||||||
| Remarks | Base model EOL announced Not available for new design |
Succession model | Anti-Sulfurated (Resistor:General purpose) dV/dt improvement type |
Vof ratiometric |
Vof fixed | Vof fixed | |
| Spec Sheet |  |
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Note ; Saturation current of L18P series indicates an output with a greater than ±10% deviation from the theoretical output value.
＜Q&A>
Q. Can the current flow be more than the saturation current value?
A. It will not immediately brake even if the flow current is more then the saturation current value.
Q. Can I use a coil / AC ?
A. Yes. However using high frequency generates heat by iron loss so must be checked on the actually machine.
Q. For creepage distance / clearance distance between primary and secondary.
A. Coil type ; Creepage distance and clearance distance is minimum 9.2mm.
Busbar type ; Creepage distance is minimum 9.2mm, and clearance distance is minimum 7.9mm.
Q. Failure rate / MTBF of L18P***D15
A. Failure rate : 496.4FIT/MTBF : 2014.4 khrs
(Calculation conditions : MIL-HDBK-217F Method of number of components, Environmental Conditions : GB)
Q. Output Impedance
A. A. Output circuit of L18P***D15-OP (as an example )is as followed. 51Ω resistor are connected in series to the output terminal of the internal product, the output voltage will slightly change by an external load resistor. Product specifications are the charactersics of the load resistance of 10kΩ
