Datasheet

GUDECO Elektronik Handelsgesellschaft mbH
Firmensitz: Niederlassungen:
Siemensstraße 22
D-61267 Neu-Anspach
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Fax [phone]
Alte Rhinstraße 16
D-12681 Berlin
Telefon [phone]
Fax [phone]
Steinebach 13a
A-6850 Dornbirn
Telefon [phone]
Fax [phone]
Oetterichweg 7
D-90411 Nürnberg
Telefon [phone]
Fax [phone]
www.gudeco.de • [e-mail]
129
www.firstohm.com.tw
[e-mail]
Sep. 30, 2010
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SM -
Stabilized Metal Film
MELF Resistor
PERFORMANCE SPECIFICATIONS
Test Characteristics Test Conditions Limits
Short Time Overload
IEC 60115-1 4.13
2 seconds 2.5x rated voltage (not over max. overload voltage)
± (0.05%+0.05R)
Load Life
IEC 60115-1 4.25.1
Rated load 1.5 hours ON, 0.5 hours OFF, at 70°C
1,000 hrs ± (0.25%+0.05R)
8,000 hrs ± (0.5%+0.05R)
225,000 hrs ± (1.5%+0.05R)
Load Life In Humidity
IEC 60115-1 4.24
56 days rated load at 40°C and 93% relative humidity
± (0.25%+0.05R)
Load Life In Humidity (accelerated
mode)
IEC 60115-1 4.39
1,000 hours at 85°C and 85% relative humidity with 0.1x rated voltage
(not over 100V)
± (0.5%+0.05R)
Periodic Electric Overload
IEC 60115-1 4.37
3.9x rated voltage (not over max. overload voltage) with 0.1s ON, 2.5s
OFF for 1,000 cycles
± (2.5%+0.05R)
Resistance To Soldering Heat
IEC 60115-1 4.18
10 seconds at 260°C solder bath temperature
± (0.05%+0.05R)
Thermal Endurance
IEC 60115-1 4.25.3
1,000 hours without load
85°C ± (0.2%+0.05R)
125°C ± (0.25%+0.05R)
Thermal Shock
IEC 60115-1 4.19
-55°C 30minutes, +125°C 30minutes
5 cycles ± (0.05%+0.05R)
1,000 cycles ± (0.5%+0.05R)
Single pulse high voltage
overload
IEC 60115-1 4.27
•
5 pulses of 1.2/50µs at 44.7x rated voltage (not over 2KV for SM16 &
SM204; not over 4KV for SM207 & SM52) with interval of 12 sec.
•
10 pulses of 10/700µs at 31.6x rated voltage (not over 2KV for SM16 &
SM204; not over 4KV for SM207 & SM52) with interval of 60 sec.
± (0.5%+0.05R)
± (1.0%+0.05R)
Electrostatic discharge
(Human body mode)
IEC 60115-1 4.40
3 positive & 3 negative discharges with 2KV for SM16 & SM204 or 4KV for
SM207 & SM52 (For continuous surge application please see Surge
Performance paragraph)
± (2.5%+0.05R)
Climatic test
IEC 60115-1 4.23
4.23.2 - dry heat: 16 hours 125°C
4.23.3 - damp heat: 24 hours 55°C with 95% relative humidity
4.23.4 - cold: 2 hours -55°C
4.23.5 - negative air pressure: 2 hour 8.5KPa at 25°C
4.23.6 - damp heat cyclic: 5 days 55°C with 95% relative humidity
4.23.7 - DC load: rated voltage at -55°C and 125oC each 1 min.
± (0.5%+0.05R)
Solderability
MIL-STD-202 Method 208
Solder area covered after 230±5°C/5±0.5 seconds w/flux applied
> 95%
Vibration
MIL-STD-202 Method 204
Six hours in each parallel and axial direction with a simple harmonic motion
having an amplitude of 1.52mm and 10 to 20,000 Hz.
± (1.0%+0.1R)
Bending test
IEC 60115-1 4.33
Pressing depth 2mm, 3 times
± (0.25%+0.05R)
Flammability
IEC 60115-1 4.35
Needle flame test 10s
No burning after 30s