44
UltraGuard Series
ESD Protection for Low Leakage Requirements
Faster semiconductor clock speeds and an increasing reliance on batteries as power
sources have resulted in the need for varistors that exhibit very low leakage current.
The UltraGuard (UG) Series of AVX Transient Voltage Suppressors address this
problem.
The UG Series is the ideal transient protection solution for high clock speed integrated
circuit application, battery-operated device, backlit display, medical/instrument applica-
tion, low voltage power conversion circuits and power supervisory chip sets. In addi-
tion, UltraGuard’s low leakage characteristics are also suitable for optic circuits like
LDD, SerDes, and laser diodes.
The UG Series is offered as discrete chips (0402, 0603, and 0805), 2-element pack-
ages (0405 and 0508), and 4-element packages (0612).
GENERAL DESCRIPTION
Discrete Chips 2-Element Arrays 4-Element Arrays
0402, 0603, (0405 and 0508) (0612)
and 0805
P
Termination
Finish
P = Ni/Sn Alloy
(Plated)
VC
VC=Surface
Mount Chip
UG
Series
UG = Low
Leakage
Series
04
Case Size
04 = 0402
06 = 0603
08 = 0805
0180
Maximum
Working
Voltage
0030 = 3.0VDC
0050 = 5.0VDC
0075 = 7.5VDC
0100 = 10.0VDC
0150 = 15.0VDC
0180 = 18.0VDC
L
Capacitance
L = Low
H = High
1
No. of
Elements
W
Packaging
(pieces per
reel)
D = 1,000
(7" reel)
R = 4,000
(7" reel)
T = 10,000
(13" reel)
W = 10,000
(7" reel,
0402 only)
HOW TO ORDER
P
Termination
Finish
P = Ni/Sn Alloy
(Plated)
MG
MG=Array
UG
Series
UG = Low
Leakage
Series
06
Case Size
04 = 0405
05 = 0508
06 = 0612
0150
Maximum
Working
Voltage
0030 = 3.0VDC
0050 = 5.0VDC
0075 = 7.5VDC
0100 = 10.0VDC
0150 = 15.0VDC
L
Capacitance
L = Low
H = High
4
No. of
Elements
2 = 2 Elements
4 = 4 Elements
D
Packaging
(pieces per
reel)
D = 1,000
(7" reel)
R = 4,000
(7" reel)
T = 10,000
(13" reel)
HOW TO ORDER
45
AVX Part Number VCIR(DC) VCIR(AC) Cap Required Cap Freq ILCase Size Elements
MGUG040030L2 _ _ ≤3.0 ≤2.3 Low 300 M 2 0405 2
MGUG050030L2 _ _ ≤3.0 ≤2.3 Low 425 M 2 0508 2
MGUG060030L4 _ _ ≤3.0 ≤2.3 Low 425 M 2 0612 4
VCUG040030L1 _ _ ≤3.0 ≤2.3 Low 175 M 2 0402 1
VCUG060030L1 _ _ ≤3.0 ≤2.3 Low 750 K 2 0603 1
VCUG080030H1 _ _ ≤3.0 ≤2.3 High 3000 K 2 0805 1
VCUG080030L1 _ _ ≤3.0 ≤2.3 Low 1100 K 2 0805 1
VCUG120030H1 _ _ ≤3.0 ≤2.3 High 3000 K 2 1206 1
VCUG120030L1 _ _ ≤3.0 ≤2.3 Low 1200 K 2 1206 1
MGUG040050L2 _ _ ≤5.0 ≤3.5 Low 40 M 2 0405 2
MGUG050050L2 _ _ ≤5.0 ≤3.5 Low 425 M 2 0508 2
MGUG060050L4 _ _ ≤5.0 ≤3.5 Low 425 M 2 0612 4
VCUG040050L1 _ _ ≤5.0 ≤3.5 Low 175 M 2 0402 1
VCUG060050L1 _ _ ≤5.0 ≤3.5 Low 550 K 2 0603 1
VCUG080050L1 _ _ ≤5.0 ≤3.5 Low 750 K 2 0805 1
VCUG120050H1 _ _ ≤5.0 ≤3.5 High 1050 K 2 1206 1
VCUG120050L1 _ _ ≤5.0 ≤3.5 Low 600 K 2 1206 1
MGUG040075L2 _ _ ≤7.5 ≤5.3 Low 40 M 2 0405 2
MGUG050075L2 _ _ ≤7.5 ≤5.3 Low 425 M 2 0508 2
MGUG060075L4 _ _ ≤7.5 ≤5.3 Low 425 M 2 0612 4
VCUG040075L1 _ _ ≤7.5 ≤5.3 Low 100 M 2 0402 1
VCUG060075L1 _ _ ≤7.5 ≤5.3 Low 425 K 2 0603 1
VCUG080075H1 _ _ ≤7.5 ≤5.3 High 900 K 2 0805 1
VCUG080075L1 _ _ ≤7.5 ≤5.3 Low 325 K 2 0805 1
VCUG120075H1 _ _ ≤7.5 ≤5.3 High 1050 K 2 1206 1
VCUG120075L1 _ _ ≤7.5 ≤5.3 Low 600 K 2 1206 1
MGUG040100L2 _ _ ≤10.0 ≤7.1 Low 40 M 2 0405 2
MGUG050100L2 _ _ ≤10.0 ≤7.1 Low 225 M 2 0508 2
MGUG060100L4 _ _ ≤10.0 ≤7.1 Low 225 M 2 0612 4
VCUG040100L1 _ _ ≤10.0 ≤7.1 Low 65 M 2 0402 1
VCUG060100L1 _ _ ≤10.0 ≤7.1 Low 250 K 2 0603 1
VCUG080100H1 _ _ ≤10.0 ≤7.1 High 550 K 2 0805 1
VCUG080100L1 _ _ ≤10.0 ≤7.1 Low 225 K 2 0805 1
VCUG120100H1 _ _ ≤10.0 ≤7.1 High 900 K 2 1206 1
VCUG120100L1 _ _ ≤10.0 ≤7.1 Low 350 K 2 1206 1
MGUG040150L2 _ _ ≤15.0 ≤11 Low 50 M 2 0405 2
MGUG050150L2 _ _ ≤15.0 ≤11 Low 50 M 2 0508 2
MGUG060150L4 _ _ ≤15.0 ≤11 Low 75 M 2 0612 4
VCUG040150L1 _ _ ≤15.0 ≤11 Low 40 M 2 0402 1
VCUG060150L1 _ _ ≤15.0 ≤11 Low 155 K 2 0603 1
VCUG080150H1 _ _ ≤15.0 ≤11 High 250 K 2 0805 1
VCUG080150L1 _ _ ≤15.0 ≤11 Low 120 K 2 0805 1
VCUG120150H1 _ _ ≤15.0 ≤11 High 500 K 2 1206 1
VCUG040180L1 _ _ ≤18.0 ≤14 Low 30 M 1 0402 1
UltraGuard Series
ESD Protection for Low Leakage Requirements
Termination Finish Code
Packaging Code
VCIR (DC) DC Circuit Voltage (V)
VCIR (AC) AC Circuit Voltage (V)
Cap Req Standard or Low
ILMaximum Leakage Current at the Circuit Voltage (μA)
Cap Typical Capacitance (pF) @ frequency specified and 0.5 Vrms
Freq Frequency at which capacitance is measured (K = 1kHz, M = 1MHz)
46
UltraGuard Series
ESD Protection for Low Leakage Requirements
SOLDER PAD DIMENSIONS mm (inches)
0402 Discrete 0603 Discrete 0805 Discrete
Length 1.00 ±0.10 (0.040 ±0.004) 1.60 ±0.15 (0.063 ±0.006) 2.01 ±0.20 (0.079 ±0.008)
Width 0.50 ±0.10 (0.020 ±0.004) 0.80 ±0.15 (0.032 ±0.006) 1.25 ±0.20 (0.049 ±0.008)
Thickness 0.60 Max. (0.024 Max.) 0.90 Max. (0.035 Max.) 1.02 Max. (0.040 Max.)
Term Band Width 0.25 ±0.15 (0.010 ±0.006) 0.35 ±0.15 (0.014 ±0.006) 0.71 Max. (0.028 Max.)
0405 Array 0508 Array 0612 Array
Length 1.00 ±0.15 (0.039 ±0.006) 1.25 ±0.20 (0.049 ±0.008) 1.60 ±0.20 (0.063 ±0.008)
Width 1.37 ±0.15 (0.054 ±0.006) 2.01 ±0.20 (0.079 ±0.008) 3.20 ±0.20 (0.126 ±0.008)
Thickness 0.66 Max. (0.026 Max.) 1.02 Max. (0.040 Max.) 1.22 Max. (0.048 Max.)
Term Band Width 0.36 ±0.10 (0.014 ±0.004) 0.41 ±0.10 (0.016 ±0.004) 0.41 ±0.10 (0.016 ±0.004)
A
B
C
D
E
2.54
(0.100)
0.89
(0.035)
0.89
(0.035)
1.27
(0.050)
0.76
(0.030)
0.76
(0.030)
3.05
(0.120)
1.02
(0.040)
1.02
(0.040)
1.02
(0.040)
08050603
1.70 (0.067)
0.61
(0.024)
0.61
(0.024)
0.51
(0.020)
0.51
(0.020)
0402
A
B
C
D
E
2-Element Arrays
0612 4-Element Array
AB C D E
0405 0.46 0.74 1.20 0.38 0.64
(0.018) (0.029) (0.047) (0.015) (0.025)
0508 0.89 1.27 2.16 0.46 0.76
(0.035) (0.050) (0.085) (0.018) (0.030)
ABCDE
0.89 1.65 2.54 0.46 0.76
(0.035) (0.065) (0.100) (0.018) (0.030)
PHYSICAL DIMENSIONS mm (inches)
