Following is data on typical resistor and capacitor components for burn-in and test use.
PC Board Resistor Specifications – Characteristics of Resistors Used in Burn-in | |||||
Parameter | Wirewound | Metal Film | Carbon Film | Carbon Composite | Thick Film Powder Oxide |
Cost | Most Expensive | Above Average | Average | Least Expensive | Above Average |
Generally Selected for | 160°C (Type III) | 150°C (Type II) | 125°C (Type I) | Not for Burn-in | to 175°C |
Wattage Range | 1 to 1000W | 1/10 to 3W | 1/2 to 2W | 1/8 to 2W | 1 to 9W |
Practical Resistance Range (½) |
0.1 to 10k | 10 to 1 M | 5 to 1 M | 5 to 1M | 0.1 to 240k |
Temperature Coefficient (ppm/°C) |
+20 to +4000 | +25 to +100 | +200 to +600 | +625 to +3000 | +200 |
Momentary Overload (5 seconds) |
800% rated wattage | 500% rated wattage | 500% rated wattage | 500% rated wattage | 250% rated wattage |
Noise | Most Quiet if Non inductive | Quiet | Less Quiet | Least Quiet | Quiet |
Moisture Resistance | Good | Good | Fair | Very Poor | Average |
General Tolerance | 1 to 5% | 1% | 5% | 10% | 2 to 5% |
Hi-Frequency Characteristics | Inductive (Non inductive wound-type increases cost) | Low Series Inductance, Low Shunt Capacitance | Negligible Series Inductance, Low Shunt Capacitance | Negligible Series Inductance, Low Shunt Capacitance | No Series Inductance, Low Shunt Capacitance |
Derating Chart |
Free Air Rating Note: Specific manufacturer’s devices will vary from data shown (reference only).
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CAPACITOR DATA
PB Board Capacitor Specifications | ||||||
Type
|
Tantalum
|
Ceramic
|
Film
|
Mica
|
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Parameter
|
Wet Slug
|
Solid
|
NPO
|
X7R
|
||
MfgRated Temp Limit |
125° to 175°C *
|
125°C
|
125° to 200°C **
|
125°C
|
100° to 175°C ***
|
85°C
|
Generally Selected For |
150°C and High Capacitance
|
125°C and High Capacitance |
150°C
|
125°C
|
Generally Not for Burn-in
|
Generally Not for Burn-in
|
Voltage Range |
3 to 500V
|
3 to 100V
|
50 to 200V
|
50 to 200V
|
100 to 600V
|
200 to 500V
|
Type Voltage Selected |
35 to 50V
|
35 to 50V
|
50 to 100V
|
50 to 100V
|
100 to 200V
|
200V
|
Surge Voltage |
115% Rated
|
115% Rated
|
250% Rated
|
250% Rated
|
150% Rated
|
200% Rated
|
Capacitor Range |
1 to 200µf
|
0.001 to 300µf
|
1 to 10,000pf
|
1 to 270,000pf
|
200pf to 10µf
|
1 to 5,500pf
|
Capacitor Charge Due to Temp |
+20 to -80%
|
+15 to -10%
|
+30%
|
15%
|
5%
|
+100%
|
General Tolerance |
5-20%
|
10-20%
|
1-5%
|
10-20%
|
5-20%
|
1-20%
|
Dissipation Factor |
9 to 20%
|
4 to 10%
|
0.10%
|
2.5%
|
0.75%
|
0.2%
|
Frequency Limit at 23°C |
100 kHz
|
1 MHz
|
70 MHz
|
11 MHz
|
100 kHz
|
100 MHz
|
Insulation Resistance at 23°C |
N/A
|
100,000 M½
|
100,000 M½
|
100,000 M½
|
30,000 M½
|
100,000 M½
|
Relative Cost |
Most Expensive
|
Moderately Expensive
|
Moderately Expensive
|
Above Average
|
Average
|
Least Expensive
|
* Some go to 175°C with voltage derating.
** Class cased NPO capacitors work up to 200°C in small values (below 1000pf) and derated voltage.
*** Teflon® film can go to 175°C with low values and derated voltages.
NOTE : Many factors affect cost and this relative listing may change depending on specific situations (particularly higher temperature in a class). Specific manufacturer’s may vary from data shown (reference only).