B82801A1135A125 EE4.2 1:125 400uH small SMT current sense
transformers
Product Applications:
- Suitable for switching power supplies
- Feedback control
- Overload sensing
- Load drop/shut down detection
Features of the B82801A1135A125
- Very low DCR
- Different turns ratios
- Very small package
- RoHS Compatible
What is Current Sense Transformer?
1. Current transformers accurately sense and measure current flow
in power supply circuits in a non-invasive way.
2. Ideally, they shunt a very small sample of the current to
measure while dissipating minimal energy. The sensed current
information is typically used to prevent overcurrent conditions and
to monitor and control circuits in power supplies and other powered
applications. Current sensors are frequently used to measure and
control the load current in power supplies, safety circuits and a
variety of control circuits.
3. In applications where controlling the current is required, such
as in power supplies, accurately sensing the magnitude of the
current is a fundamental requirement. Coilcraft manufactures
wire-through-hole current sensors and SM current sense transformers
for measuring current at frequencies from 50/60 Hz to greater than
1 MHz.
How to select the appropriate current sense transformer?
It is determing by your application begins:
- The maximum current to be sensed
- The frequency of the current waveform to be sensed
- The duty cycle of the current waveform to be sensed
- The desired output voltage across your terminating resistor
Specification Details:
| Part Number | Trader Part number | Turns Ratio ( Pri: Sec) | Inductance Min (uH) | DCR max (mohms) | Frequency range (KHz) | | Recommend Rt Ohm | Voltage-time V-us | | |
| CT1101 | B82801A133A020 | 1:20 | 33 | 2.5/700 | 78 -＞1000 | | 20 | 5.76 | | |
| CT1102 | B82801A1743A030 | 1:30 | 74 | 2.5/1100 | 31 -＞1000 | | 30 | 8.6 | | |
| CT1103 | B82801A1134A040 | 1:40 | 132 | 2.5/1500 | 22 -＞1000 | | 40 | 11.5 | | |
| CT1104 | B82801A1214A050 | 1:50 | 205 | 2.5/2400 | 16 -＞1000 | | 50 | 14.4 | | |
| CT1105 | B82801A1304A060 | 1:60 | 295 | 2.5/3600 | 10 -＞1000 | | 60 | 17.3 | | |
| Part Number | Trader Part number | Turns Ratio ( Pri: Sec) | Inductance Min (uH) | DCR max (mohms) | Frequency range (KHz) | | Recommend Rt Ohm | Voltage-time V-us | | |
| CT1101 | B82801A1333A020 | 1:70 | 33 | 2.5/700 | 78 -＞1000 | | 20 | 5.76 | | |
| CT1106 | B82801A1407A070 | 1:70 | 400 | 2.5/4600 | 31 -＞1000 | | 70 | 20.0 | | |
| CT1107 | B82801A1824A100 | 1:100 | 820 | 2.5/9000 | 22 -＞1000 | | 100 | 28.8 | | |
| CT1108 | B82801A1135A125 | 1:125 | 1280 | 2.5/15000 | 16 -＞1000 | | 125 | 36.0 | | |
| CT1109 | B82801A1185A150 | 1:150 | 1840 | 2.5/22700 | 10 -＞1000 | | 150 | 43.2 | | |
Dimensions:
Application circuit and pinning:
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Order Show :
FAQ:
Q: Can I have samples for testing quality?
A: Yes, you can buy some samples of any of our products for testing
quality and market
Q: What is the delivery time if we place an order?
A: it depends on order quantities. Usually, we can deliver goods
within 3-5 working days for small orders, for bigger quantities,
let’s confirm when you place the official order.
Q: Do you accept OEM/ODM?
A: We Support OEM/ODM Services, we turn your idea into reality.
Q: Can I have my own logo on the products?
Yes, you can put your logo on the products with the required order
quantity. Please just send us the information about your Logo.
Q: Do your products meet CE/ROHS requirements?
Yes, the goods with CE/ROHS certification are approved to make sure
of high quality.
As a manufacturer, we can ensure the delivery time according to the
formal contract.
The effective purchasing and production departments enable us to
deliver the goods on time and we can provide amazing service after
selling. What we provide are high-level products with high-quality
service. Let's talk more in detail to make it happen.
