g
NTC THERMISTORS: TYPE NHQMM
SURFACE MOUNT CHIP 0603 SIZE
DESCRIPTION:
A range of 0603 size surface mount NTC chip
thermistors.
DIMENSIONS:
0.3 –
0.2mm
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
0.8
– 0.2 mm
1.6 – 0.2 mm
1.0mm
max
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/cm
2
Max hot air temperature ........... 275°C at 4 m/s
Max vapor temperature .......................... 215°C
Max rate of cooling .............................. 2.5°C/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 R10in code)
Tolerance on B value .......................... ±200 K
Minimum temperature ............................ -40°C
Maximum temperature .......................... 125°C
Dissipation factor ............................. 1.2mW/K
Time constant ..................................... 4s max
Crown Industrial Estate, Priorswood Rd
Taunton, Somerset TA2 8QY UK
Tel +44 (0)1823 335200
Fax +44 (0)1823 332637
Code
NHQMM300B275R5
NHQMM400B280R5
NHQMM680B280R5
NHQMM800B280R5
NHQMM101B280R5
NHQMM471B320R5
NHQMM501B320R5
NHQMM102B325R5
NHQMM152B345R5
NHQMM202B410R5
NHQMM222B410R5
NHQMM252B710R5
NHQMM302B410R5
NHQMM332B410R5
NHQMM472B355R5
NHQMM502B355R5
NHQMM682B355R5
NHQMM103B375R5
NHQMM153B380R5
NHQMM203B380R5
NHQMM223B380R5
NHQMM303B400R5
NHQMM333B400R5
NHQMM473B400R5
NHQMM503B400R5
NHQMM683B400R5
NHQMM104B415R5
NHQMM154B425R5
NHQMM204B425R5
R25
Ω
30
40
68
80
100
470
500
1000
1500
2000
2200
2500
3000
3300
4700
5000
6800
10000
15000
20000
22000
30000
33000
47000
50000
68000
100000
150000
200000
B 25/85 K
2750
2800
2800
2800
2800
3200
3200
3250
3450
4100
4100
4100
4100
4100
3550
3550
3550
3750
3800
3800
3800
4000
4000
4000
4000
4000
4150
4250
4250
Data sheet D-NHQMM-3
808 US Highway 1
Edison, New Jersey 08817-4695 USA
Tel +1 (732) 287 2870
Fax +1 (732) 287 8847
967 Windfall Road
St Marys, Pennsylvania 15857-3397 USA
Tel +1 (814) 834 9140
Fax +1 (814) 781 7969
