28018 Parallax Inc, 28018 Datasheet - Page 8

• Manufacturer Part Number: 28018
• Description: MODULE SENSOR TEMP+HUMIDITY
• Manufacturer: Parallax Inc
• Series: Sensirion SHT11r

Specifications of 28018

• Output Type: Digital - 2-Wire
• Sensor Type: Humidity and Temperature
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

SHT1x / SHT7x Relative Humidity & Temperature Sensor System
5.2 SHT7x (4-pin single-in-line)
Table 11 SHT7x Pin Description
5.2.1
The device is supplied in a single-in-line pin type package.
The sensor housing consists of a Liquid Crystal Polymer
(LCP) cap with epoxy glob top on a standard 0.6mm FR4
substrate. The device is Cd and Hg free.
The sensor head is connected to the pins by a small bridge
to minimize heat conduction and response times.
A 100nF capacitor is mounted on the back side between
VDD and GND.
All pins are gold plated to avoid corrosion. They can be
soldered or mate with most 1.27mm (0.05’’) sockets
e.g.: Preci-dip / Mill-Max 851-93-004-20-001 or similar
Total weight: 168mg, weight of sensor head: 73mg
The production date is printed onto the cap in white numbers
in the form wwy. e.g. ”351” = week 35, 2001.
5.2.2
The SHT7x are shipped in 32mm tape. These reeled parts in
standard option are shipped with 500 units per 13inch
diameter reel. Reels are individually labelled with barcode
and human readable labels.
Carrier Tape
Figure 16 Tape configuration and unit orientation
5.2.3
Standard wave SHT7x soldering ovens may be used at
maximum 235°C for 20 seconds.
For manual soldering contact time must be limited to 5
seconds at up to 350°C.
After wave soldering the devices should be stored at
>74%RH for at least 24h to allow the polymer to rehydrate.
Please consult the application note “Soldering procedure” for
more information.
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www.sensirion.com
Pin Name
1
2
3
4
Other packaging options may be available on request.
Cover Tape
SCK
VDD
GND
DATA
Package type
Delivery Conditions
Soldering Information
Trailer Tape
300mm minimum
Supply 2.4 – 5.5V
Comment
Serial clock input
Ground
Serial data bidirectional
1
Components
Leader Tape
500mm minimum
v2.0 March 2003
Figure 17 SHT7x dimensions in mm (inch)
(0.018)
0.46
(0.05)
1.2
1
2
5.08
(0.15)
(0.2)
3.7
3
1.27
(0.05)
4
(0.01)
0.2
(0.08)
2
(0.12)
3.1
(0.09)
2.2
(0.024)
0.6
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