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Specifications
Power(Watts):
125mW
Resistance:
390mΩ
Mounting Type:
SMD
Current Rating:
-
Voltage Rating:
-
Type:
Current Sense Resistor
Temperature Coefficient:
±200ppm/℃
Tolerance:
±5%
Mfr. Part #:
73L3R39J
Package:
0805
Key Attributes
Model Number:
73L3R39J
Product Description
CTS 73Lx & 73Ex Series Current Sensing Resistor Flat Terminal Chip
The 73Lx & 73Ex Series Current Sensing Resistors are ceramic packaged devices designed for accurate current detection and limiting. They offer excellent electrical and thermal characteristics, making them suitable for a wide range of applications including regulated battery circuits, motor control, power supplies, and industrial equipment.
Product Attributes
- Brand: CTS
- Construction: Thick Film
- Terminal Finish: Matte Tin (e3)
- Packaging: Tape and Reel
- Certifications: RoHS Compliant in Accordance with EU Directive 2011/65/EU - Lead-Free Termination Finish - Exemption 7(c)-I, Electrical and electronic components containing lead [Pb] in glass
Technical Specifications
| Model Type | Power Rating @ +70C (Watts) | Resistance Range (milliohms) | Resistance Tolerance (%) | Operating Temperature Range (C) | Temperature Coefficient (ppm/C) | Working Voltage (maximum V) |
|---|---|---|---|---|---|---|
| 73L1 | 0.100 | 200 - 910 | 1, 2, 5 | -55 to +155 | 300 | 100V |
| 73L2 | 0.100 | 200 - 910 | 1, 2, 5 | -55 to +155 | 300 | 100V |
| 73L3 | 0.125 | 100 - 910 | 1, 2, 5 | -55 to +155 | 100, 200 | 100V |
| 73L4 | 0.250 | 100 - 910 | 1, 2, 5 | -55 to +155 | 100, 200 | 100V |
| 73L5 | 0.500 | 100 - 910 | 1, 2, 5 | -55 to +155 | 100, 200 | 100V |
| 73L6 | 0.750 | 100 - 910 | 1, 2, 5 | -55 to +155 | 100, 200 | 100V |
| 73L7 | 1.000 | 200 - 910 | 1, 2, 5 | -55 to +155 | 200 | 100V |
| 73E3 | 0.250 | 50 - 91 | 1, 5 | -55 to +155 | 100 | 100V |
| 73E4 | 0.500 | 50 - 91 | 1, 5 | -55 to +155 | 100 | 100V |
| 73E6 | 1.000 | 50 - 91 | 1, 5 | -55 to +155 | 100 | 100V |
Environmental Parameters
| Test Description | Maximum Delta R (%) | Test Conditions |
|---|---|---|
| Thermal Cycle | 5.00 | 5 cycles -55C to +125C |
| Short Time Overload | 2.50 | 2 times rated working voltage for 5 seconds |
| Moisture Resistance | 3.00 | 240 hours; +40C, 90% RH |
| High Temperature Exposure | 3.00 | 1,000 hours @ +155C, no load |
| Load Life | 5.00 | 1,000 hours @ +70C, rated load |
| Resistance to Solder Heat | 3.00 | 10 seconds @ +260C solder |
| Resistance to Solvents | - | Isopropyl alcohol, Freon TMC |
| Solderability | - | RMA Flux, +230C, 5 seconds dip, 95% coverage |
Mechanical Specifications (Dimensions in mm)
| Model Type | Package Code (Inch [mm]) | L | W | t | A | B | C |
|---|---|---|---|---|---|---|---|
| 73L1 | 0402 [1005] | 2.00 0.10 | 0.25 0.10 | 0.25 0.10 | 0.60 | 2.00 | 0.70 |
| 73L2 | 0603 [1608] | 1.60 +0.20 -0.10 | 0.50 +0.15 -0.05 | 0.25 0.20 | 1.00 | 3.00 | 1.20 |
| 73L3 / 73E3 | 0805 [2012] | 1.25 +0.20 -0.10 | 0.50 +0.15 -0.05 | 0.40 0.20 | 1.20 | 4.00 | 1.65 |
| 73L4 / 73E4 | 1206 [3216] | 1.60 +0.10 -0.15 | 0.50 +0.15 -0.05 | 0.40 0.20 | 2.20 | 5.00 | 2.00 |
| 73L5 | 1210 [3225] | 2.60 +0.10 -0.15 | 0.55 +0.15 -0.05 | 0.50 0.20 | 2.20 | 5.00 | 2.90 |
| 73L6 / 73E6 | 2010 [5025] | 5.00 0.15 | 1.60 0.15 | 0.60 0.25 | 3.20 | 6.60 | 3.00 |
| 73L7 | 2512 [6432] | 6.30 0.15 | 5.00 0.15 | 1.00 0.05 | 4.20 | 8.20 | 3.70 |
2411041627_CTS-73L3R39J_C2106477.pdf
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