NL-5557-

Thyratron

NL-5557

NL-5557 type thyratron is a glass-shell structure, direct-heating oxide cathode, natural cooling mercury-filled thyratron, mainly used for the protection of small and medium-sized power high-frequency equipment, spark-proof circuits, stable quality and high reliability .

The main parameters1：

General performance and mechanical performance	Parameter	Unit
Weight	100	g
Hight	≤152	mm
Installation Location	Axial vertical installation
Ambient temperature	5 to 50	℃
Cooling condition	Natural cooling
Service life	≥500	h

The main parameters2：

Electrical parameters	Rated value	Unit
Filament voltage	2.5	V
Filament current	5	A
Tube Voltage drop	10	V
Anode-grid capacitance	1.8	pF
Positive anode peak voltage	2500	V
Peak reverse anode voltage	5000	V
Average anode current	0.5	A
Peak anode current	40	A
Ignition voltage	100 to 500	V
Anode Current when Grid voltage=0	10	A
Ionization time	10	μS
Deionization time	1000	μS
Frequency	25	Hz

The main parameters3

Electrical parameters Limit value	Min.	Max.	Unit
Filament voltage	2	3	V
Filament current	4.5	5.5	A
Anode voltage		2500	V
Anode current	0.5	40	A

Typical working state：

Filament voltage	2.5	V
Filament current	5	A
Grid voltage	-15	V
Anode voltage	1000	V