Class I and II High Reliability Chip (COG/NPO/X7R)

Note: These are standard sizes (in inches). We can manufacture any size required. Please consult the factory for special builds.

SIZE 0402 0504 0603 0805 1206 1210 1515 1825 2225
LENGTH-NOM 0.040 0.050 0.060 0.080 0.120 0.120 0.150 0.180 0.220
WIDTH-NOM 0.020 0.040 0.030 0.050 0.060 0.100 0.150 0.250 0.250
THICK-MAX 0.024 0.044 0.035 0.055 0.065 0.065 0.130 0.150 0.150
END BAND 0.010
± 0.005
0.010
± 0.005
0.010
± 0.005
0.015
± 0.008
0.020
± 0.010
0.020
± 0.010
0.030
± 0.015
0.030
± 0.015
0.030
± 0.015

Dimensions are ±5% length and width or .010;, whichever is greater.

The following table represents our standard listing of MLC’s produced from our stable EIA Class II X7R dielectric. In addition to the above listed standard case sizes, WCI is ideally situated to custom fabricate alternative size, thickness and/or voltage ratings per individual requirements. Should you not find what you are looking for please call the factory.

Produced according to meticulously defined standards, all parts are then conditioned at elevated temperature and voltage. 100% of all lots are screened for conformance to stated performance criteria. All units are tested to MIL-PRF-123 and MIL-PRF-55681 or customer required screening can also be accommodated.

Our high reliability line of class II X7R capacitors are very well suited to applications allowing for predictable changes in electrical properties given time, temperature and voltage. A temperature coefficient of ±15% is standard and typical results are detailed above. Common applications include aerospace, defense, pulse energy detonation and higher end consumer needs requiring a greater degree of safety/reliability (not usually found in “cots” parts).

COG/NPO - Min/Max Cap Values (High Reliability)

Min Cap: 1R0 1R0 1R0 1R0 1R0 100 100 331 391
SIZE 0402 0504 0603 0805 1206 1210 1515 1825 2225
16V 181 152 102 392 103 223 393 104 124
25V 151 122 821 332 103 183 333 823 104
50V 121 102 821 332 822 183 293 823 104
100V 101 821 471 182 682 103 253 683 823
200V 820 561 271 152 392 682 183 563 683

The following table represents our standard listing of MLC’s produced from our stable EIA Class II X7R dielectric. In addition to the above listed standard case sizes, WCI is ideally situated to custom fabricate alternative size, thickness and/or voltage ratings per individual requirements. Should you not find what you are looking for please call the factory.

Produced according to meticulously defined standards, all parts are then conditioned at elevated temperature and voltage. 100% of all lots are screened for conformance to stated performance criteria. All units are tested to MIL-PRF-49467 however, MIL-PRF-123, MIL-PRF-55681 or customer required screening can also be accommodated.

Our high reliability line of class II X7R capacitors are very well suited to applications allowing for predictable changes in electrical properties given time, temperature and voltage. A temperature coefficient of ±15% is standard and typical results are detailed above. Common applications include aerospace, defense, pulse energy detonation and higher end consumer needs requiring a greater degree of safety/reliability (not usually found in “cots” parts).

X7R - Min/Max Cap Values (High Reliability)

Min Cap: 151 151 151 151 221 221 221 561 102
SIZE 0402 0504 0603 0805 1206 1210 1515 1825 2225
16V 472 333 223 104 274 474 105 225 255
25V 392 273 183 823 224 394 824 185 225
50V 392 273 183 683 184 334 684 155 225
100V 332 223 153 473 124 224 564 125 155
200V 152 103 682 223 683 104 334 824 105

Temperature Coefficient

COG/NPO (N)

Material: COG/NPO
Operation Temperature Range: -55°C to 125°C.
Temperature Coefficient: ± 30ppm/°C.
Dissipation Factor: 0.1% max at 25°C.
Insulation Resistance: at 25°C > 100GΩ or 1000MΩμF or whichever is less.
at 125°C > 10GΩ or 100MΩμF or whichever is less.
Dielectric withstanding Voltage: 250% for parts ≤250V.
150% for parts 250V-1KV.
120% for parts >1KV.
Aging Rate: 0% per decade.
Testing Parameters: 1kHz, 1.0 ± 0.2VRMS, 25°C.
1mHz for capacitance ≤ 100pF.
Temperature Coefficient, Percent Vs. Degrees C

Temperature Coefficient

X7R (X)

Material: X7R (BX)
Temperature Coefficient: ±15%
Voltage Coefficient: -25% Max.
Operation Temperature Range: -55°C to 125°C.
Dissipation Factor: 2.5% max at 25°C.
Insulation Resistance: at 25°C > 100GΩ or 1000MΩμF or whichever is less.
at 125°C > 10GΩ or 100MΩμF or whichever is less.
Dielectric withstanding Voltage: 250% for parts ≤250V.
150% for parts 250V-1KV.
120% for parts >1KV.
Aging Rate: <2% per decade.
Testing Parameters: 1kHz, 1.0 ± 0.2VRMS, 25°C.
1mHz for capacitance ≤ 100pF.
Temperature Coefficient, Percent Vs. Degrees C

Ordering Information

Prefix Case Size Dielectric Capacitance Tolerance Termination Voltage Suffix
WC 0805 N 272 K D 101  
WC - Standard
WCN - High Reliability
WCR - RoHS
Chip Size N = NPO
X = X7R

See Dielectric Characteristics
Capacitance Value Code in pF
1st two digits significant, 3rd the power of ten
i.e.: 102 = 1000pF
F = ±1%
G = ±2%
J = ±5%
K = ±10%
M = ±20%
Z = +80%/-20%
V = +100%
A = Ag
D = PdAg
Y = Ni(PbSn)
S = Solder plated over nickel
SN = Tin over nickel plated (RoHS)
G = Au over nickel plated
Voltage Code
1st two digits significant, 3rd the power of ten
i.e.
500 = 50V
101 = 100V
-X### = Special Thickness
-B MIL-PRF-123
-C MIL-PRF-55681

Dielectric Codes

Prefix RoHS Dielectric Code Material Temperature Coefficient
Please see Dielectric Characteristics for more information
    N COG/NPO -55°/+125°C
    M COG/NPO Hi Temp -55°/+300°C
 WC"R"  Y P NPO Hi Temp -55°/+250°C
  Y R N2T -55°/+125°C/ ±500pm
  Y S N2T -55°/+125°C/ ±300pm
  Y T N2T Hi Temp -55°/+200°C
    Z X7R/BR BR -55°/+125°C
 WC"R"  Y B X7R/BR BR -55°/+125°C
    X BX/MIL BX -55°/+125°C VC -25% max
    U X8R Hi Temp -55°/+160°C
    V X9R Hi Temp -55°/+200°C
  Y W X7R/BZ BZ -55°/+125°C
  Y Y Y5V Y5V -30°/+85°C

Prefixes

Prefix Description
WC Standard
WCN Non standard Requirements
High Temperature
High Reliability
WCR RoHS Compliant
HT High Temperature (Potted Units)
HTN High Temp w/ High Reliability Testing (Potted Units)
SM Surface Mount
SMN Surface Mount with High Reliability Testing

Capacitance Tolerance Codes

Code Tolerance
F ± 1%
G ± 2%
J ± 5%
K ± 10%
M ± 20%
Z +80%/-20%
V + 100%

Suffixes

Suffix Description
-B MIL-PRF-123
-C MIL-PRF-55681
-NM No Marking
-NC No Coating
-R ### Bleed Resistor
-X### Special Thickness

Electrical test voltages for DWV and voltage conditioning

Device working voltage (DC) DWV Test Voltage Conditioning Test
< 200 2.5 X Rated 2.0 X Rated
250 500 Volts 400 Volts
300 500 Volts 400 Volts
400 600 Volts 500 Volts
500 750 Volts 600 Volts
600 – 1250 1.5 X Rated 1.0 X Rated
> 1250 1.2 X Rated 1.0 X Rated