THERMOMETRICS, INC.
808 US Highway 1
Edison, New Jersey 08817-4695 USA
Tel +1 (732) 287 2870
Fax +1 (732) 287 8847
Email: sales@thmusa.com
BOWTHORPE THERMOMETRICS
Crown Industrial Estate, Priorswood Rd
Taunton, Somerset TA2 8QY UK
Tel +44 (0)1823 335200
Fax +44 (0)1823 332637
Email: info@thermometrics.com
KEYSTONE THERMOMETRICS CORP
967 Windfall Road
St Marys, Pennsylvania 15857-3397 USA
Tel +1 (814) 834 9140
Fax +1 (814) 781 7969
Email: sales@keystone-usa.com
DAEWOO THERMOMETRICS
#302 3rd floor Bethel Bldg,
324-1 Yangjae-dong, Seocho-Ku, Seoul, Korea
Tel +82 (0)2 5765232, 5233
Fax +82 (0)2 576 5234
Email: thmkorea@bora.dacom.co.kr
NTC THERMISTORS: TYPE NHQ
SURFACE MOUNT CHIP 1206 SIZE
DESCRIPTION:
A range of 1206 size surface mount NTC chip
thermistors.
DIMENSIONS:
FEATURES:
• Palladium silver electrodes with nickel barrier and
solder plating
• Intended for temperature measurement, control
and compensation
• Excellent solderabilty without ‘tombstoning’
• Suitable for standard soldering techniques
• Glass-coated ceramic between electrodes for
improved stability
• Supplied in tape-and-reel packaging
DATA:
Soldering Recommendations:
Maximum storage time in closed package....1 year
Maximum storage time exposed to ambient
conditions of I5°C - 30°C, 15% - 70% RH ...30 days
Drying prior to soldering: not to exceed 48h at 80°C
............................................ or 16h at 100°C
.............................................. or 8h at 125°C
Flux type .......................................... R or RMA
Flow soldering conditions:
Preheat temperature .................... 80° - 150°C
Max rate of change of temperature ....... 2.5°C/s
Max solder temperature ......................... 265°C
Max dwell time ........................................ 10s
Cooling in ambient or air flow of ............... 5m/s
Reflow soldering conditions:
Method ........................ infrared, hot gas, vapor
Max rate of change preheat temperature . 2.5°C/s
Max Temp ............................................ 225°C
Max time above 200°C ............................. 30s
Max radiant flux (0. 1 to 100W µ) ........ 5W/cm2
Max hot air temperature ........... 275°C at 4 m/s
Cleaning:
Ultrasonic cleaning in methanol or isopropanol not
exceeding 40 kHz for 5 minutes or aqueous clean-
ing not exceeding 70°C for 7 minutes, is recom-
mended
Resistance tolerance at 25°C .................. ± 5%
........... (for± 10% replace R5 by R10 in code)
Tolerance on B value .......................... ±200 K
Minimum temperature ............................ -40°C
Maximum temperature .......................... 125°C
Dissipation factor ................................ 3mW/K
Time constant ..................................... 8s max
Data sheet D-NHQ-4
0.5 ±
0.3mm
1.6 ±
0.2mm
1.2mm
max
3.2 0.2mm
Code R25 Ω
ΩΩ
ΩB 25/85 K
NHQ101B280R5 100 2800
NHQ501B325R5 500 3250
NHQ801B325R5 800 3250
NHQ102B325R5 1000 3250
NHQ152B345R5 1500 3450
NHQ202B410R5 2000 4100
NHQ222B410R5 2200 4100
NHQ252B410R5 2500 4100
NHQB410272R5 2700 4100
NHQ302B410R5 3000 4100
NHQ472B355R5 4700 3550
NHQ502B355R5 5000 3550
NHQ103B375R5 10000 3750
NHQ153B400R5 15000 4000
NHQ203B400R5 20000 4000
NHQ223B400R5 22000 4000
NHQ303B400R5 30000 4000
NHQ333B400R5 33000 4000
NHQ473B400R5 47000 4000
NHQ503B400R5 50000 4000
NHQ104B425R5 100000 4250
NHQ154B425R5 150000 4250
NHQ304B435R5 300000 4350
NHQ474B435R5 470000 4350
NHQ504B435R5 500000 4350
