Product Overview
The SS340RT/SS440R Series are versatile unipolar digital Hall-effect sensor ICs designed for operation by magnetic fields. They respond to a single pole (North for SS340RT, South for SS440R) and are available in three magnetic sensitivities: high (75 G), medium (135 G), and low (305 G). The SS340RT is offered in a miniature SOT-23 surface mount package, ideal for space-constrained applications and low-voltage (3 Vdc) operation, while the SS440R comes in a leaded TO-92-style package. These sensors feature robust IC design with ESD protection, reverse polarity protection, and a wide operating temperature range of -40 C to 150 C. They are suitable for a variety of applications including motion control, lid closure detection, speed sensing, flow rate sensing, and position control.
Product Attributes
- Brand: Honeywell
- Certifications: RoHS-compliant materials (Directive 2002/95/EC)
- Packaging Options: Tape and reel (SS340RT, 3000 units/reel), Bulk package (SS440R, 1000 units/bag)
Technical Specifications
| Model Series | Sensitivity | Typical Operate Point (G @ 25C) | Typical Release Point (G @ 25C) | Typical Hysteresis (G) | Supply Voltage (Vdc) | Max Load Current (mA) | Operating Temperature (C) | Package Style |
|---|---|---|---|---|---|---|---|---|
| SS341RT/SS441R | High | 75 | 35 | 40 | 3 to 24 | 20 | -40 to 150 | SOT-23 (SS341RT), TO-92 (SS441R) |
| SS343RT/SS443R | Medium | 135 | 40 | 50 | 3 to 24 | 20 | -40 to 150 | SOT-23 (SS343RT), TO-92 (SS443R) |
| SS349RT/SS449R | Low | 305 | 135 | 80 | 3 to 24 | 20 | -40 to 150 | SOT-23 (SS349RT), TO-92 (SS449R) |
| Characteristic | Condition | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Supply Voltage (SS340RT) | -40 C to 125 C | 3 | 12 | Vdc | |
| Supply Voltage (SS340RT) | 150 C [302 F] | 3 | 24 | Vdc | |
| Supply Voltage (SS440R) | -40 C to 150 C | 3 | 24 | Vdc | |
| Supply Current | Vsupply = 5 V at 25 C | 4 | 6 | mA | |
| Supply Current | Vsupply = 3 V at 25 C | 3.5 | 5 | mA | |
| Vsat | 20 mA, Gauss >Bop | 0.4 | Vdc | ||
| Output Leakage Current | Gauss >Bop | 10 | A | ||
| Output Switching Time (Rise) | Vsupply = 12 V at 25 C, RL = 1.6 k, CL = 20 pF | 1.5 | s | ||
| Output Switching Time (Fall) | Vsupply = 12 V at 25 C, RL = 1.6 k, CL = 20 pF | 1.5 | s | ||
| Thermal Resistance (SS340RT) | SOT-23 | 303 | C/W | ||
| Thermal Resistance (SS440R) | flat TO-92-style | 233 | C/W | ||
| Storage Temperature | -40 | 165 | C [F] |
2410121940_Honeywell-SS449R_C194838.pdf
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