Changsha Purple Horn E-Commerce Co., Ltd.
| Standby Current | 6mA |
| working temperature | -40℃~+125℃ |
| Current Range | ±40A |
| Voltage - Supply | 3.3V |
| Band Width | 1MHz |
| Current Terminal Resistance | 0.5mΩ |
| Response Time (tr) | 300ns |
| Sensitivity | 25mV/A |
| Bidirectional Current Detection | Support |
| Description | ±40A 25mV/A SOIC-16 Current Sensors RoHS |
| Mfr. Part # | CT431-HSWF40MR |
| Package | SOIC-16 |
| Model Number | CT431-HSWF40MR |
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Product Specification
| Standby Current | 6mA | working temperature | -40℃~+125℃ |
| Current Range | ±40A | Voltage - Supply | 3.3V |
| Band Width | 1MHz | Current Terminal Resistance | 0.5mΩ |
| Response Time (tr) | 300ns | Sensitivity | 25mV/A |
| Bidirectional Current Detection | Support | Description | ±40A 25mV/A SOIC-16 Current Sensors RoHS |
| Mfr. Part # | CT431-HSWF40MR | Package | SOIC-16 |
| Model Number | CT431-HSWF40MR |
Product Overview
The Allegro CT431 is a high-bandwidth, ultra-low noise integrated contact current sensor utilizing Allegro's patented XtremeSense TMR technology for highly accurate current measurements. It supports nine current ranges, with an integrated current-carrying conductor (CCC) capable of handling up to 65 A. The device provides a linear analog output voltage and achieves a total output error of less than 1.0% full-scale (FS) across its operating voltage and temperature range. Key features include a ~300 ns output response time, low current consumption (~6.0 mA), and immunity to common mode fields. An integrated overcurrent detection (OCD) circuitry alerts the microcontroller via an active-low fault pin (FLT) when out-of-range currents are detected. The CT431 is offered in an industry-standard, green, RoHS-compliant 16-lead SOIC wide package.
| Feature | Specification | Details |
|---|---|---|
| Product Series | CT431 | XtremeSense TMR Current Sensor |
| Current Ranges | Nine ranges | 0 to 20 A, 20 A, 0 to 30 A, 30 A, 40 A, 0 to 50 A, 50 A, 0 to 65 A, 65 A |
| Max Current Carrying Conductor (CCC) | Up to 65 A | |
| Output Type | Linear Analog Voltage | |
| Total Output Error (EOUT) | < 1.0% FS | Over voltage and full temperature range (40C to 125C) |
| Bandwidth | 1 MHz | |
| Output Response Time | ~300 ns | |
| Current Consumption | ~6.0 mA | |
| Common Mode Field Immunity | 54 dB (CMFRR) | |
| Overcurrent Detection (OCD) | Integrated circuitry | Outputs to FLT pin |
| Fault Output (FLT) | Open drain, active low digital signal | Indicates fault conditions (OCD, UVLO) |
| Supply Voltage | 3.0 to 3.6 V | Recommended: 3.3 V |
| Operating Temperature Range | 40C to 125C | |
| Isolation Voltage (Rated) | 5 kVRMS | Agency tested per IEC 62368 and UL1577 |
| Working Voltage (Basic Isolation) | 1287 VRMS | Per IEC 62368 |
| Working Voltage (Reinforced Isolation) | 647 VRMS | Per IEC 62368 |
| Package Dimensions | 10.21 mm 10.31 mm 2.54 mm | 16-lead SOICW |
| Noise (Typical) | 9.5 to 19.0 mARMS | @ fBW = 100 kHz |
| Power-On Time (tON) | 100 s (typ) | |
| Rise Time (tRISE) | 200 ns (typ) | |
| Propagation Delay (tDELAY) | 250 ns (typ) | |
| Undervoltage Lockout (UVLO) | 2.45 V (falling), 2.50 V (rising) | |
| Applications | Solar/power inverters, UPS, SMPS, telecom power supplies, battery management systems, motor control, white goods, power utility meters, overcurrent fault protection | |
| Part Numbers Examples | CT431-HSWF20MR, CT431-ASWF30DR, CT431-HSWF65MR | Refer to Selection Guide for full list |
| Part Number | Current Range (IPMAX) (A) | Sensitivity (mV/A) | Operating Temperature Range (C) | Package | Dimensions (mm) | Packing |
|---|---|---|---|---|---|---|
| CT431-HSWF20MR | 20 | 50 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-HSWF30MR | 30 | 33.3 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-HSWF40MR | 40 | 25 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-HSWF50MR | 50 | 20 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-HSWF65MR | 65 | 15.4 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-HSWF20DR | 0 to 20 | 100 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-HSWF30DR | 0 to 30 | 66.7 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-HSWF50DR | 0 to 50 | 40 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-HSWF65DR | 0 to 65 | 30.8 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-ASWF20MR | 20 | 50 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-ASWF30MR | 30 | 33.3 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-ASWF50MR | 50 | 20 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-ASWF65MR | 65 | 15.4 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-ASWF20DR | 0 to 20 | 100 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-ASWF30DR | 0 to 30 | 66.7 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-ASWF50DR | 0 to 50 | 40 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
| CT431-ASWF65DR | 0 to 65 | 30.8 | 40 to 125 | 16-lead SOICW | 10.21 10.31 2.54 | Tape and Reel |
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Agent,Importer
Year Established:
2009
Employee Number:
300~500
Ecer Certification：
Verified Supplier
Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture. Founded in 2009, Our compa... Changsha Purple Horn E-Commerce Co., Ltd.. is a professional company focus on integrated circuit ic business. Purple Horn will also responsible with exporting and logistic business. there is professional factory Beijing Silk Road which focus on desigining and manufacture. Founded in 2009, Our compa...
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