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Gas Discharge Tubes
3 Electrode Mini (3RM) and Standard (3R) Series

Part Numbering System | Specifications | Dimensions

Part Numbering System

WPGT
1		 - 3R
2		 200
3		 C
4

1 World Products Gas Discharge Tubes

2 Series Code
    

3RM = 3 Electrode Mini Series
3R = 3 Electrode Standard Series

3 DC Breakdown Voltage

    

75 = 75V - 3R Series Only
90 = 90V
145 = 145V
200 = 200V
230 = 230V
250 = 250V
260 = 260V - 3R Series Only
300 = 300V - 3R Series Only

350 = 350V
400 = 400V
420 = 420V - 3RM Series Only
470 = 470V
550 = 550V - 3R Series Only
600 = 600V

4 Lead Type
    

B = No Leads
CF = (1.0mm lead diameter) with Fail Safe – 3R Series Only
CF1 = (0.8mm lead diameter) with Fail Safe
C = Radial Lead (1.0mm lead diameter) – 3R Series Only
C2 = Radial Lead (0.8 lead diameter) – 3R Series Only
C3 = Radial Lead with 3.8 ± 0.3mm lead pitch
   (0.8mm lead diameter) – 3RM Series Only
G = Axial Lead (1.0mm lead diameter) – 3R Series Only
G1 = Axial Lead (0.8mm lead diameter) – 3R Series Only
H = Radial lead with 4.4mm ± 0.3mm lead pitch
   (0.8mm lead diameter) – 3 RM series only

Specifications

3 Electrode Mini Series (3RM)

Base Part Number

DC Breakdown Voltage
(V)

Maximum
Impulse
Breakdown
Voltage
(V)

Maximum Impulse Discharge Current
(8/20 µs)
(KA)

Alternating Discharge Current
(A)

Impulse Life
(10/
1000µs)
(400A)

DC Holdover Voltage
(V)

Minimum Insulation Resistance
(GΩ)

 Maximum Capacitance
(pf)

100V/s

100V/µs

1000V/µs

 1 time

10 times
(5 times each polarity)

 50Hz,
1 sec

50Hz,
1 sec

times

<150ms

*

 1MHz
WPGT-3RM90
90 ± 20%
750
850
10
5
5
30
300
52
10
2
WPGT-3RM145
145 ± 20%
750
850
10
5
5
30
300
52
10
2
WPGT-3RM200
200 ± 20%
600
700
15
10
10
60
300
135
10
2
WPGT-3RM230
230 ± 20%
600
700
15
10
10
60
300
135
10
2
WPGT-3RM250
250 ± 20%
600
700
15
10
10
60
300
135
10
2
WPGT-3RM350
350 ± 20%
650
750
15
10
10
60
300
150
10
2
WPGT-3RM400
400 ± 20%
700
800
15
10
10
60
300
150
10
2
WPGT-3RM420
420 ± 20%
700
800
15
10
10
60
300
150
10
2
WPGT-3RM470
470 ± 20%
800
900
15
10
10
60
300
150
10
2
WPGT-3RM600
600 ± 20%
900
1000
10
5
5
30
300
150
10
2

UL497B Recognized, File #E135015

*DC Breakdown Voltage 
90-145V
200-400V
420-600V
DC Measuring Voltage
50V
100V
250V

3 Electrode Standard Series (3R)

Base Part Number

DC Breakdown Voltage
(V)

Maximum
Impulse
Breakdown
Voltage
(V)

Maximum Impulse Discharge Current
(8/20 µs)
(KA)

Alternating Discharge Current
(A)

Impulse Life
(10/
1000µs)
(400A)

DC Holdover Voltage
(V)

Minimum Insulation Resistance
(GΩ)

Maximum Capacitance
(pf)

100V/s

100V/µs

1000V/µs

1 time

10 times
(5 times each polarity)

50Hz, 1 sec

Single 9 cycles

times

<150ms

*

1MHz

WPGT-3R75

75 ± 20%

600

700

20

10

10

130

300

52

10

2

WPGT-3R90

90 ± 20%

600

700

52

10

2

WPGT-3R145

145 ± 20%

500

700

52

10

2

WPGT-3R200

200 ± 20%

500

700

80

10

2

WPGT-3R230

230 ± 20%

600

700

80

10

2

WPGT-3R250

250 ± 20%

600

700

80

10

2

WPGT-3R260

260 ± 20%

600

700

80

10

2

WPGT-3R300

300 ± 20%

700

900

150

10

2

WPGT-3R350

350 ± 20%

700

900

150

10

2

WPGT-3R400

400 ± 20%

800

1000

150

10

2

WPGT-3R470

470 ± 20%

800

1000

150

10

2

WPGT-3R550

550 ± 20%

1100

1400

150

10

2

WPGT-3R600

600 ± 20%

1200

1500

150

10

2

UL497B Recognized, File # E135015

*DC Breakdown Voltage 
70-90V
145V-400V
470V-600V
DC Measuring Voltage
50V
100V
250V

Dimensions

3 Electrode Mini Series (3RM)
Unit: mm

Item

Dimensions
D
6.0 +0.2, -0.5
T
8.5 ± 0.4
T1
11.5 +0.8, -0.5
L
7.0 ± 0.5
S
3.8 ± 0.3
or 4.4 ± 0.3
d
0.8 ± 0.05

Failsafe Current - Time Curve

3 Electrode Standard Series (3R)
Unit: mm

Item

Dimensions
D
8.0 ±0.2
T
10.0 ±0.3
T1
13.4 ±0.4
L
11.0 ±0.5
R1
8.1 ±0.3
R2
9.8 ±0.4
S
4.4 ±0.3

Failsafe Current - Time Curve



 

Gas Discharge Tubes

General Characteristics
  Features
  Temperature Rating
  100% Inspection
  RoHS Information
  Solderability
  Part Marking
  Terms and Definitions

2 Electrode Mini (2RM)
2 Electrode Standard and
  High Voltage (2R)
2 Electrode High Current (2N)
2 Electrode Switching Series (2T)
3 Electrode Mini (3RM) and
  Standard (3R) Series
2 Electrode Surface Mount
  Mini (2SM), Surface Mount (2S)
  and Surface Mount Mini Square
  (2SS) Series
3 Electrode Surface Mount Mini
  (3SM) Series

Packaging
  Standard Bulk Packaging
  Tape & Reel Specifications

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