# Current Sensing Transformer, 1:200, 76 mH, 24 A, 700 Vµs, 500kHz, 4.5 ohm
**URL**: https://novapart.co/products/FIS125NL/current-sensing-transformer-1200-76-mh-24-a-700-vs
**SKU**: FIS125NL
**Manufacturer**: PULSE ELECTRONICS
**Category**: Transformers || Current Sensing Transformers
**Price**: €1.7000
**Stock**: 50+
**Lead Time**: 106 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Inductance | 76mH |
| Et Constant | 700Vµs |
| Turns Ratio | 1:200 |
| Product Range | CSRC |
| Frequency Range | 500kHz |
| Primary Current | 24A |
| Transformer Mounting | Through Hole |
| Dc Resistance Primary | - |
| Transformer Terminals | PC Pin |
| Dc Resistance Secondary | 4.5ohm |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:3861123/)
## Current Sense Transformers
## FIS 1X5 Series
_Current sense transformers provide output feedback to the pulse control circuitry allowing low-cost regulation of switch-mode power supplies_
_Fully encapsulated construction, Reinforced Insulation. Isolation primary to secondary: 4000V AC 25A maximum primary current, 500kHz maximum frequency Applications: switch-mode power supplies, lighting, switch controls_
Electrical Specifications @ 25°C - Operating Temperature -40°C to +125°C
|**Part No.**|**Prim/Sec**
**Ratio**|**Sec L**
(mH MIN)|**Sec DCR**
(ΩMAX)|**V x**τ
(MAX)|
|---|---|---|---|---|
|**FIS105NL**|1:50|4.7|0.5|175µVS|
|**FIS115NL**|1:100|18|2.0|350µVS|
|**FIS125NL**|1:200|76|4.5|700µVS|
|**FIS155NL**|1:500|470|16.0|1750µVS|
|**FIS1105NL**|1:1000|1900|50.0|3500µVS|
## **Notes:**
L: Inductance: (1-3) tested at 10 KHz & 10 mV Rt ( Ω ): Recommended Terminating Resistance * Contact Pulse for availability 1 Is (A): sec. current F(Hz): Frequency V x τ: V = Rt x ls τ = 2F
**==> picture [488 x 175] intentionally omitted <==**
**----- Start of picture text -----**
Mechanicals Schematics
FISXXX
3 2
_— ¢
\ ° n a e mae | i ;
2 X_S Q0. 5 +£0.1 | |__ _ 2 x 0 1. 2 5 OY C4 1
AL ; = 3 FIS105NL/15NL/25NL/55NL FIS1105NL
Weight .......................7.0 grams ....................8.0 grams
8 a rs io Tray ................................30/tray ........................34/tray
:ieoo| | ° Coe
2 1 5 . 0 5 TON S Dimension: mm
F IN AL OUTLI N E SUGGES T ED LA N D PA T TER N Unless otherwise specified, all tolerances are ± 0.50
**----- End of picture text -----**
## For More Information:
**Americas -** prodinfo_power_americas@ yageo.com | **Europe -** prodinfo_power_emea@yageo.com | **Asia -** prodinfo_power_asia@yageo.com
Performance warranty of products offered on this data sheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein may be trademarks or registered trademarks of their respective owners. © Copyright, 2023. Pulse Electronics, Inc. All rights reserved.
P537.G (01/23)
PulseElectronics.com
1
## Links
- [View this product on Novapart](https://novapart.co/products/FIS125NL/current-sensing-transformer-1200-76-mh-24-a-700-vs)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/pulse-electronics/fis125nl/current-sens-transformer-0-076h/dp/3861123)
---
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