D1871L
Current Sensing Transformer, 1:200, 80 mH, 35 A, 596 Vµs, 1kHz to 1MHz, 4.5 ohm
- Manufacturer: COILCRAFT
- Product type: Current Sensing Transformers
- Turns Ratio:1:200; DC Resistance:-; Inductance:80mH; ET Constant:-; Primary Current:35A; Transformer Mounting:Through Hole; Product Range:-; SVHC:No SVHC (15-Jan-2019)
- SVHC: No SVHC (25-Jun-2025)
- Inductance: 80mH
- ET Constant: 596Vµs
- Turns Ratio: 1:200
- Product Range: D18xx Series
- Frequency Range: 1kHz to 1MHz
- Primary Current: 35A
- Transformer Mounting: Through Hole
- DC Resistance Primary: -
- Transformer Terminals: PC Pin
- DC Resistance Secondary: 4.5ohm
| Delivery and price | |
|---|---|
| Units per pack | 110 |
| Price | 2.52 € |
| Current stock | 50+ |
| Lead time | 30 days |
Document 131 ## **Current Sensors – D18xx, CS1xxx** Designed for use above 20 kHz, these sensors function as the secondaries of a current transformer. The conductor carrying the current to be measured is the “one turn primary.” Sensitivity can be set at 1 Volt per Ampere or at other desired values. It can also be doubled by looping the conductor through the hole twice. Applications include sensing branch circuit overload, switcher feedback, and detecting load drop or shutdown. They come in a molded version (CS1xxx Series) or encapsulated model (D18xx Series). Coilcraft **Designer’s Kit P403** contains samples of the CS1050, CS1100 and CS1200 sensors, current transformer versions with equivalent ratings, plus two 50/60 Hz current sensors. To order, contact Coilcraft or visit **http://order.coilcraft.com.** ||||**Sensed Sensitivity**|**Sensed Sensitivity**||**Terminating**|| |---|---|---|---|---|---|---|---| |**Part**||**Inductance**|**currentIin**|**Vout**|**Iin**|**resistor**|**Color**| |**number**|**Turns**|**min(mH)**|**max(A)**|**(V)**|**(A)**|**RT(Ohms)**1|**code**| |D1869L|50|5|10|1|1|50|Green| |D1870L|100|20|24|1|1|100|Brown| |D1871L|200|80|35|1|1|200|Red| |CS1050L|50|5|10|1|1|50|| |CS1100L|100|20|24|1|1|100|| |CS1200L|200|80|35|1|1|200|| |CS1750L|750|1125|30|1|1|750|| 1. Varying terminating resistance will increase or decrease output Voltage/Ampere in conductor. 2. Ambient temperature range –40°C to +85°C. 3. Electrical specifications at 25°C. ## **D18xx Series** ## **CS1xxx Series** ## **Typical Circuit** **==> picture [504 x 159] intentionally omitted <==** **----- Start of picture text -----**<br> 0.46511,81max codeDate 19,050.75 max 0.3759,53 [max] 0.7017,8 [max] A Iin B<br>ty 0.205,08 min e e e ot O A T 0.80 1+ 3− ;<br>B A 20,300.80 max B A 20,3max RT Vout<br>0.20 min<br>Color 5,08<br>code<br>3 3 1<br>0.348,64 max 11,430.45 max 0.033 ±0.0020,84 ±0,05 0.158/0.2184,01/5,54 0.50 ±0.01512,7 ±0,38<br>0.036/0.030<br>“h 3 E 3 1 U AL— ——<br>0,91/0,76<br>0.1253,175 — max +h} | | 0.50 ±0.01512,7 ±0,38 p [ 2 44<br>Terminations: Tin-silver over copper<br>Terminations: Tin-silver over copper Weight: 5.3 – 5.8 g<br>Weight: 4.0 – 4.5 g Leads 3 and A are in phase per orientation shown above.<br>**----- End of picture text -----**<br> **US** +1-847-639-6400 sales@coilcraft.com **UK** +44-1236-730595 sales@coilcraft-europe.com **Taiwan** +886-2-2264 3646 sales@coilcraft.com.tw **China** +86-21-6218 8074 sales@coilcraft.com.cn **Singapore** + 65-6484 8412 sales@coilcraft.com.sg Document 131 Revised 04/14/09 © Coilcraft Inc. 2013 This product may not be used in medical or high risk applications without prior Coilcraft approval. Specification subject to change without notice. Please check web site for latest information.
Updated at June 4, 2026
Coilcraft is a globally recognized leader in the design and manufacture of high-performance magnetic components. Renowned for its engineering excellence, reliable delivery, and stringent quality standards, the company provides essential solutions for a wide array of demanding applications, including signal processing, RF, power management, and timing circuits. Our comprehensive portfolio of Coilcraft components is centered on their industry-leading inductor technologies. This encompasses a vast selection of high-efficiency power inductors designed to optimize modern power supply architectures, alongside precision RF inductors engineered to deliver exceptional stability and performance in high-frequency communications and wireless applications. To support complete electromagnetic compatibility and comprehensive circuit design, we also offer a variety of Coilcraft's specialized magnetic solutions. This includes robust common mode chokes and filters for effective EMC and RFI suppression, current sensing transformers, and a selection of inductor kits and assortments that provide design engineers with versatile options for rapid prototyping and development.
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