Gas Discharge Tubes

© 2017 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: 12/12/17

Product Characteristics

Voltage Vs.Time Characteristic

V-I Characteristic Curve

Materials

Device Tin Plated 17.5 ± 12.5

Microns

Construction: Ceramic Insulator

Storage and Operational

Temperature

-40 to +90°C

@1.0GHz = 0.03dB

@1.4GHz = 0.06dB

@1.8GHz = 0.09dB

@2.0GHz = 0.11dB

@2.4GHz = 0.13dB

@2.8GHz = 0.15dB

@3.1GHz = 0.17dB

@3.5GHz = 0.19dB

@4.0GHz = 0.22dB

Typical Insertion Loss

Note: Insertion data for customer reference only, application testing needed for verification.

Electrical Characteristics

Part

Number

Device Specifications (at 25°C)

Life Ratings

DC Breakdown

in Volts

(@100V/s)

Impulse

Break-

down

in Volts

(@100V/µs)

Impulse

Break-

down In

Volts

(@1 kV/µs)

Insulation

Resistance

Capaci-

tance

(@1MHz)

Max

Impulse

Discharge

Current

(8/20µs)

Max

Impulse

Discharge

Current

(10/700µs)

AC

Dischage

Current

(50Hz, 1sec)

AC

Dischage

Current

(Single, 9

Cycles)

DC

Holdover

Voltage

(<150ms)

Impulse

Life

(10/1000µs)

(50A)

MIN TYP MAX

MAX

MIN

MAX

MIN

MIN

MIN

CG675

60

75

90

600

700

0.3pf

10 Shots

@

1 Shot at

5kA

10 Shots

@

3A

6A

52V

300

Shots

CG690

72

90

108

600

700

52V

CG6145

116 145 174

600

700

52V

CG6230

186 230 276

600

700

80V

CG6250

200 250 300

600

700

80V

CG6300

240 300 360

650

800

135V

CG6350

280 350 420

750

900

135V

CG6400

360 400 480

850

1000

135V

CG6470

376 470 564

900

1100

135V

CG6600

480 600 720

1000

1200

135V

Note:

1. 5 x (+) and 5 x (-) applications of 3kA 8/20μs sec.

2. 5 x (+) and 5 x (-) applications of 150A 10/700μs sec.

1GΩ

@50V

1GΩ

@100V

1GΩ@250V

Time (ns)

0200

0

200

400

600

800

400600

8001000

1200

Max dynamic

breakover voltage

Hold over voltage

On-state voltage

I Axis

Arc Voltage

Point at which gas tube is at

lowest impedance and

fully conductive.

Typical arc voltage at about

10 to 12 Volts

Max Dynamic Breakover Voltage

(Impulse Breakdown)

Point at which gas tube is at

lowest impedance and

fully conductive

Holdover Voltage

Device resets to a high

impedance state once the

voltage across the device

falls below this level.

Characteristics of Gas Plasma -response to transient condition

V Axis

Note: Tested per 1kV/µs waveform

CG6 Series