Gap Capacitor

Eulex microwave / millimeter wave gap capacitor

Eulex Components has developed a new low-profile gap capacitor with low insertion loss and ultra high self resonance frequencies. Specific applications include DC blocking, RF Bypass, impedance matching, filtering, tuning and coupling

The Eulex Gap Capacitor utilizes a novel patented internal electrode design allowing for significant leverage in capacitance for a given dielectric. These gains mean Eulex can offer devices manufactured from ultra stable materials with high Q and extremely high self-resonance with useful capacitance values far exceeding those offered by other manufacturers.

Selection Guide

SIZEXG15 XG20XG25XG30XG35XG40XG50
Pad Width
[W1]
inch (mm)
0.015±0.003
(0.381±0.076)
0.020±0.003
(0.508±0.076)
0.025±0.003
(0.635±0.076)
0.030±0.003
(0.762±0.076)
0.035±0.003
(0.889±0.127)
0.040±0.003
(1.016±0.127)
0.050±0.003
(1.27±0.254)
Chip Width
[W2]
inch (mm)
0.020 Max
(0.508 Max)
0.025 Max
(0.635 Max)
0.030 Max
(0.762 Max)
0.035 Max
(0.889Max)
0.045 Max
(1.143Max)
0.050 Max
(1.27Max)
0.065 Max
(1.615Max)
Length[L]
inch (mm)
0.040 Max
(1.016Max)
0.050 Max
(1.270Max)
0.080 Max
(2.032Max)
0.080 Max
(2.032Max)
0.080 Max
(2.032Max)
0.080 Max
(2.032Max)
0.080 Max
(2.032Max)
Thickness[T]
inch (mm)
0.005±0.002
(0.127±0.051)
0.005±0.002
(0.127±0.051)
0.005±0.002
 (0.127±0.051)
0.005±0.002
(0.127±0.051)
0.007±0.002
(0.178±0.051)
0.007±0.002
(0.178±0.051)
0.007±0.002
(0.178±0.051)
Gap[G]
inch (mm)
0.005
(0.127)
0.005
(0.127)
0.005
(0.127)
0.005
(0.127)
0.005
(0.127)
0.010
(0.254)
0.010
(0.254)

Selection Guide

6.3 VXG15XG20XG25XG30XG35XG40XG50
DielectricCap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
MinMaxMinMaxMinMaxMinMaxMinMaxMinMaxMinMax
P0.951.11.822.83.344.75.76.57.58.71113
Q3.23.65.86.69.1101315182224284044
N14162529404760688291110120170190
C485688100140160200240280330370430590680
X4104707608701200140017002000240028003200360050005800
Y**7002000320036005000570074008400100001200013000150002100024000
16 VXG15XG20XG25XG30XG35XG40XG50
DielectricCap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
P0.650.751.21.41.92.22.74.43.74.44.85.67.58.7
Q2.22.53.94.66.27.2910121416182530
N9.41117202731394551606880108125
C3339607094110140160180210240280370430
X29033051060081093011001300160018002100240032003800
Y**12001400210025003400390049005600650076008600100001300015000
25 VXG15XG20XG25XG30XG35XG40XG50
DielectricCap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
P0.550.6511.81.61.82.32.63.13.544.66.37.2
Q1.92.13.33.75.2105.87.58.5101113152024
N891416232533364350586590100
C273350578090110130150180200220320360
X2402704304906807509701100130015001800200027003000
Y**1000120018002000280032004000460055006200720082001100013000
50 VXG15XG20XG25XG30XG35XG40XG50
DielectricCap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
Min
Max
P0.50.550.911.41.522.22.733.53.95.46
Q1.61.82.93.24.556.57.28.81012131820
N77.8.121420222733384349568086
C252743496875100110130150170190270300
X210230370420580650840930120013001500170024002600
Y**8709701600180025002700350039004800520062006800980011000
100 VXG15XG20XG25XG30XG35XG40XG50
DielectricCap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Cap (pF)
Min
Max
Min
Max
Min
Max
Min
Max
MinMax
Min
Max
MinMax
P0.40.450.750.821.21.31.61.82.32.52.93.34.65.1
Q1.31.52.42.73.74.35.46.27.28.29.6111518
N5.866111216182327333639476572
C20233740576408291110130150160230270
X18020033036049056070078096011001200140020002200
Y**750820130015002000230030003300400045005200580082009100

Example Part Number (How To Order)

XGL40X302KGW
Gap CapacitorVoltage CodeCase SizeDielectric TypeCapacitanceCap ToleranceMetallizationPacking
Dielectric TypePQNCXY
Operating Temperature Range-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-55°C to 125°C-30°C to +85°C
Temperature Coefficient [/°C]Neg.±25ppm±30ppm+0-5%±15%+22%-82%
Max Dissipation Factor0.01%0.10%0.15%0.05%2.50%=4.00%
Insulation Resistance @ 25°C100GΩ100GΩ
100GΩ
100GΩ
100GΩ
10GΩ
Insulation Resistance @ 125°C100GΩ
10GΩ
10GΩ
10GΩ
10GΩ
1GΩ
Dielectric Type
PPorcelain
QClass I/NPQ
NClass I/NPO
CClass I/NCS
XClass II/X7R
YClass III/Y5V
Capacitance Code
R050.05pF
0R20.20pF
1R01.0pF
2R72.7pF
27027pF
271270pF
1021000pF
DielectricCap LimitCapacitance Tolerance
(P,Q)<9.1pFB±0.10pF
(P,Q)<9.1pFC±0.25pF
(P,Q)<9.1pFD±0.50pF
(P,Q)>10pFG±2%
(P,Q,N)>10pFJ±5%
Allk±10%
AllM±20%
AllZ±80-20%
Voltage Code
A6.3VDC
E16VDC
L25VDC
G50VDC
B100VDC
Packing
WESD Waffle Pack
Termination
GGold
Electrical & Mechanical Characteristics
Voltage Rating:6.3,  16, 25, 50, 100 WVDC
Insulation Resistance:See Chart (Dielectric Code)
 Dielectric Withstanding Voltage:250% of WVDC
Dissipation Factor:See Chart (Dielectric Code)
Capacitance Test:Values > 1000pF (1.0±0.2 VRMS@ 1KHz, 25°C)
Values ≤ 1000pF (1.0±0.2 VRMS@ 1KHz, 25°C)
Shear Strength,min:Size dependent
99.9% Au Termination, min:100µin

Dielectric Temperature Coefficients

Performance Data

Modelithics
XGE40Q130K
Tested on .020” thick roger board fixture with .008” gap.
Modelithics
Modelithics
XGE40N750K
Tested on .020” thick roger board fixture with .008” gap.
Modelithics
Modelithics
XGE40C271K
Tested on .020” thick roger board fixture with .008” gap.
Modelithics
Modelithics

Test data to 67GHz supplied by: