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
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Steinebach 13a
A-6850 Dornbirn
Telefon [phone]
Fax [phone]
Oetterichweg 7
D-90411 Nürnberg
Telefon [phone]
Fax [phone]
www.gudeco.de • [e-mail]
128
www.firstohm.com.tw
[e-mail]
Sep. 30, 2010
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SM -
Stabilized Metal Film
MELF Resistor
TECHNICAL SUMMARY
Characteristics Ranges & Limits
Operating Temperature Range, °C -55 ~ +125
Temperature Coefficient, PPM / °C
±1%, 2% ±25, ±50
±5% ±100
Dielectric Withstanding Voltage, VAC or DC
SM16, SM204 200
SM207, SM52 500
Insulation Resistance, MΩ >10
4
Film Temperature, °C
SM16, SM204, SM207 125
SM52 140
Voltage Coefficient, PPM / V <0.5
Current noise, µV / V
<10KΩ <0.05
10KΩ ~ 100KΩ <0.2
100KΩ ~ 1MΩ <1
1MΩ ~ 10MΩ <3
Power derating 100% for temp. < 70 °C, linearly down to 0% at 125 °C
Failure Rate, pcs/10
9
device hours <1
Thermal Resistance, K/W <220
Tin Whisker (JESD201 Temperature Cycling &
High Temp./Humidity Storage), µm
<5
SURGE PERFORMANCE
0.00001s0.0001s 0.001s 0.01s0.1s1s
PEAK POWER
(watt)
PAPPLICABLE-PRATED
PSURGE
100
10
1
10 us 100us 1ms 10 ms 100ms 1s
0.1
S
M207
,
SM52
SM16
,
SM20
4
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
0.00010.001 0.01 0.1110
SURGE DURATION
SURGE DURATION
SURGE OFF TIME
SINGLE SURGE PERFORMANCESURGE POWER DERATING CURVE
Notes:
1. SINGLE SURGE PERFORMANCE graph is good for NON REPETITIVE applications operating in an ambient temperature of 70°C or less.
For temperatures above 70°C, the graph power must be derated further linearly down to zero at 125°C.
2. To determine applicable surge power in continuous-surge applications:
• Identify allowable duration and peak power Psurge of single surge;
• Determine ratio of surge duration/surge OFF time in application;
• Calculate P
applicable
backwardly according to Y-axis of SURGE POWER DERATING CURVE.