SHT25 datasheet(11/12 Pages) ETC2

11 / 12 page

Datasheet SHT25

www.sensirion.com

Version 0.91 – October 2010

11/12

Figure 19 Laser marking on SHT25. For details see text.

Reels are also labeled, as displayed in Figure 20 and

Figure 21, and give additional traceability information.

Figure 20: First label on reel: XX = Sensor Type (25 for SHT25),

O = Output mode (0 = Digital), NN = Chip Version, Y = last digit

of year, RRR = number of sensors on reel divided by 10 (200 for

2000 units), TTTTT = Traceability Code.

Figure 21: Second label on reel: For Device Type and Part

Order Number (See Packaging Information on page 2), Delivery

Date (also Date Code) is date of packaging of sensors (DD =

day, MM = month, YYYY = year), CCCC = Sensirion order

number.

8.4

Shipping Package

SHT2x are provided in tape & reel shipment packaging,

sealed into antistatic ESD bags. Standard packaging sizes

are 400, 1500 and 5000 units per reel. For SHT25, each

reel contains 440mm (55 pockets) header tape and

200mm (25 pockets) trailer tape.

The drawing of the packaging tapes with sensor

orientation is shown in Figure 22. The reels are provided in

sealed antistatic bags.

Figure 22 Sketch of packaging tape and sensor orientation.

Header tape is to the right and trailer tape to the left on this

sketch.

9 Compatibility to SHT1x / 7x protocol

SHT2x sensors may be run by communicating with the

Sensirion specific communication protocol used for SHT1x

and SHT7x. In case such protocol is applied please refer

to the communication chapter of datasheet SHT1x or

SHT7x. Please note that reserved status bits of user

Please understand that with the SHT1x/7x communication

protocol only functions described in respective datasheets

can be used with the exception of the OTP Reload

function that is not set to default on SHT2x. As an

alternative to OTP Reload the soft reset may be used.

Please note that even if SHT1x/7x protocol is applied the

timing values of Table 5 and Table 7 in this SHT2x

datasheet apply.

For the calculation of physical values the following

equation must be applied:

For relative humidity RH

RES

125

⋅

−

and for temperature T

RES

175.72

46.85

⋅

−

RES is the chosen respective resolution, e.g. 12 (12bit) for

relative humidity and 14 (14bit) for temperature.

8.0

2.0

4.0

0.3

1.3

R0.3 MAX

R0.25

Ø0.15 MIN

3.3

0.25

SHT25

D0AC4

Device Type:

1-100PPP-NN

Description:

Humidity & Temperature Sensor

SHTxx

Part Order No.

1-100PPP-NN or Customer Number

Date of Delivery: DD.MM.YYYY

Order Code:

46CCCC / 0

Lot No.:

XXO-NN-YRRRTTTTT

Quantity:

RRRR

RoHS:

Compliant

Lot No.

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