Datasheet SHT7x

www.sensirion.com

Version 5 – December 2011

9/12

Environment Standard

HTOL

125°C, 1000 h

Within

specifications

TC

-40°C - 125°C, 500 cycles

Acc. JESD22-A104-C

Within

specifications

THU

85°C / 85%RH, 1000h

Within

specifications

ESD immunity MIL STD 883E, method 3015

(Human Body Model at ±2kV)

Qualified

Latch-up

force current of ±100mA with

Qualified

Table 10: Qualification tests: HTSL = High Temperature Storage

Lifetime, TC = Temperature Cycles, UHST = Unbiased Highly

accelerated temperature and humidity Test, THU = Temperature

humidity unbiased

6 Packaging

6.1

Packaging type

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 0.6 mm FR4

substrate. The sensor head is connected to the pins, by a

small bridge to minimize heat conduction and response

times. The pins are made of Cu/Be alloy coated with

1.3 m Ni and 0.5 m Au, which are soldered to the FR4

substrate by lead-free solder paste. The gold plated back

side of the sensor head is connected to the GND pin. A

100nF capacitor is mounted on the back side between

VDD and GND. The device is fully RoHS and WEEE

compliant – thus it is free of of Pb, Cd, Hg, Cr(6+), PBB

and PBDE.

Size including pins is 19.5 x 5.08 x 3.1mm. Total weight:

168 mg, weight of sensor head: 73 mg.

All pins are Au plated to avoid corrosion. They can be

soldered or mate with most 1.27 mm (0.05’’) sockets, for

example: Preci-dip / Mill-Max R851-83-004-20-001 or

similar.

6.2

Traceability Information

All SHT7x are marked with an alphanumeric, three digit

code on the chip cap – see “B2G” on Figure 1. The lot

numbers allow full traceability through production,

calibration and testing. No information can be derived from

the code directly, respective data is stored at Sensirion.

Labels on the reels are displayed in Figure 14 and Figure

15, they both give traceability information.

Figure 14: First label on reel: XX = Sensor Type (71 for SHT71),

NN = Chip Version (04 for V4), Y = last digit of year, RRR =

number of sensors on reel divided by 10 (200 for 2000 units),

TTTTT = Traceability Code.

Figure 15: Second label on reel: For Device Type and Part

Order Number please refer to Table 12, Delivery Date (also

Date Code) is date of packaging of sensors (DD = day, MM =

month, YYYY = year), CCCC = number of order.

6.3

Shipping Package

SHT7x are shipped in 32mm tape at 50pcs each – for

details see Figure 16 and Table 12. Reels are individually

labeled with barcode and human readable labels, see

section 6.2.

Sensor Type

Packaging

Quantity

Order Number

SHT71

Tape Stripes

50

1-100092-04

SHT75

Tape Stripes

50

1-100071-04

Table 11: Packaging types per sensor type.

Dimensions of packaging tape are given in Figure 16. All

tapes have a 7 pockets empty leader tape (first pockets of

the tape) and a 7 pockets empty trailer tape (last pockets

of the tape).

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:

45CCCC / 0

Lot No.:

XX0-NN-YRRRTTTTT

Quantity:

RRRR

RoHS:

Compliant

Lot No.