HIH-4030/31 Series Humidity Sensors
DESCRIPTION
Honeywell has expanded our HIH Series to include an SMD (Surface Mount Device) product line: the new HIH 4030/4031. The HIH 4030/4031 complements our existing line of non-SMD humidity sensors. SMD packaging on tape and reel allows for use in high volume, automated pick and place manufacturing, eliminating lead misalignment to printed circuit board throughhole.
The HIH-4030/4031 Series Humidity Sensors are designed specifically for high volume OEM (Original Equipment Manufacturer) users.
Direct input to a controller or other device is made possible by this sensor’s near linear voltage output. With a typical current draw of only 200 μA, the HIH-4030/4031 Series is often ideally suited for low drain, battery operated systems.
Tight sensor interchangeability reduces or eliminates OEM production calibration costs. Individual sensor calibration data is available.
The HIH-4030/4031 Series delivers instrumentation-quality RH (Relative Humidity) sensing performance in a competitively priced, solderable SMD.
The HIH-4030 is a covered integrated circuit humidity sensor. The HIH-4031 is a covered, condensation-resistant, integrated circuit humidity sensor that is factory-fitted with a hydrophobic filter allowing it to be used in condensing environments including industrial, medical and commercial applications.
The RH sensor uses a laser trimmed, thermoset polymer capacitive sensing element with on-chip integrated signal conditioning.
The sensing element's multilayer construction provides excellent resistance to most application hazards such as condensation, dust, dirt, oils and common environmental chemicals.
Sample packs are available. See order guide.
- Tape and reel packaging allows for use in high volume pick and place manufacturing (1,000 units per tape and reel)
- Molded thermoset plastic housing
- Near linear voltage output vs %RH
- Laser trimmed interchangeability
- Low power design
- Enhanced accuracy
- Fast response time
- Stable, low drift performance
- Chemically resistant
FEATURES
- Refrigeration equipment
- HVAC (Heating, Ventilation and Air Conditioning) equipment
- Medical equipment
- Drying
- Metrology
- Battery-powered systems
- OEM assemblies
POTENTIAL APPLICATIONS
TABLE 1. PERFORMANCE SPECIFICATIONS (At 5 Vdc supply and 25 oC [77 oF] unless otherwise noted.)
| Parameter | Minimum | Typical | Maximum | Unit | Specific Note |
| Interchangeability (first order curve) | – | – | – | – | – |
| 0% RH to 59% RH | -5 | – | 5 | % RH | – |
| 60% RH to 99% RH | -8 | – | 8 | % RH | – |
| Accuracy (best fit straight line) | -3.5 | – | +3.5 | % RH | 1 |
| Hysterisis | – | 3 | – | % RH | – |
| Repeatability | – | ±0.5 | – | % RH | – |
| Settling time | – | – | 70 | ms | – |
| Response time (1/e in slow moving air) | – | 5 | – | s | – |
| Stability (at 50% RH in a year) | – | ±1.2 | – | % RH | 2 |
| Stability (at 50% RH in a year) | – | ±0.5 | – | % RH | 3 |
| Voltage supply | 4 | – | 5.8 | Vdc | 4 |
| Current supply | – | 200 | 500 | μA | – |
| Voltage output (1st order curve fit) | VOUT=(VSUPPLY)(0.0062(sensor RH) + 0.16), typical at 25 oC | ||||
| Temperature compensation | True RH = (Sensor RH)/(1.0546 – 0.00216T), T in oC | ||||
| Output voltage temp. coefficient at 50% RH, 5 V | – | -4 | – | mV/oC | – |
| Operating temperature | -40[-40] | See Figure 1. | 85[185] | oC[oF] | – |
| Operating humidity (HIH-4030) | 0 | See Figure 1. | 100 | % RH | 5 |
| Operating humidity (HIH-4031) | 0 | See Figure 1. | 100 | % RH | – |
| Storage temperature | -50[-58] | – | 125[257] | oC[oF] | – |
| Storage humidity | See Figure 2. | % RH | 5 | ||
Specific Notes
1. Can only be achieved with the supplied slope and offset. For HIH-4030/31-003 catalog listings only.
2. Includes testing outside of recommended operating zone.
3. Includes testing for recommended operating zone only.
4. Device is calibrated at 5 Vdc and 25 ?C.
5. Non-condensing environment. When liquid water falls on the humidity sensor die, output goes to a low rail condition indicating no humidity.
General Notes
1. Sensor is ratiometric to supply voltage.
2. Extended exposure to &90% RH causes a reversible shift of 3% RH.
3. Sensor is light sensitive. For best performance, shield sensor from bright light.
FACTORY CALIBRATION DATA
HIH-4030/31 Sensors may be ordered with a calibration and data printout. See Table 2 and the order guide on the back page.
TABLE 2. EXAMPLE DATA PRINTOUT
| Model | HIH-4030-003 |
| Channel | 92 |
| Wafer | 030996M |
| MRP | 337313 |
| Calculated values at 5 V VOUT at 0% RH VOUT at 75.3% RH | 0.958 V 3.268 V |
| Linear output for 3.5% RH accuracy at 25 °C Zero offset Slope Sensor RH | 0.958 V 30.680 mV/%RH (VOUT - zero offset)/slope (VOUT - 0.958)/0.0307 |
| Ratiometric response for 0% RH to 99% RH VOUT | VSUPPLY (0.1915 to 0.8130) |
