Document
Littelfuse Circuit Protection 5mm 2Pole GDTs (ceramic gas discharge tubes), are commonly used to help protect sensitive telecom equipment such as communication lines, signal lines and data transmission lines from damage caused by transient surge voltages that typically result from lightning strikes and equipment switching operations.
Littelfuse Circuit Protection GDTs offer a high level of surge protection, low capacitance and a broad array of breakover voltage levels, making them suitable for applications such as MDF (Main Distribution Frame) modules, high data-rate telecom applications (e.g. ADSL, VDSL), and surge protection on power lines. Littelfuse Circuit Protection GDTs, can help equipment meet the most stringent regulatory standards.
Gas Discharge Tubes GTCX25-XXXM-R02 Series
Benefits:
Compact, small form factor suitable for efficient assembly
Helps provide overvoltage fault protection against high energy surges
Suitable for high-frequency applications
Features:
2Pole, 5mm devices Broad voltage range from 75V-600V Various form factors: surface mount, axial leads, no
leads Low capacitance and insertion loss UL 497B recognized RoHS compliant Devices tested per ITU K.12 recommendations Non-radioactive materials
Applications:
Telecommunications - MDF modules, xDSL equipment, RF system protection, antenna, base station
Telecommunications © 2016 Littelfuse,Inc. Specifications aMreDsuFbjmectotdouchleansg,exwDitShoLutenqotuiciep. ment, RF sytem Revised July 26,2016 Protection, antenna, pase station
• Industrial and consumer electronics, such as - Surge protectors - Alarm system
• Industrial and consumer electronics, such as Document: SCD27304
Status: Released
1
Rev: B Date: JULY 26, 2016
GTCX25-XXXM-R02 Series
Gas Discharge Tubes
Device Voltage Ratings and Part Marking
Part Number
DC Sparkover
Impulse Sparkover
GTCX25-750M-R02 GTCX25-900M-R02 GTCX25-141M-R02 GTCX25-151M-R02 GTCX25-201M-R02 GTCX25-231M-R02 GTCX25-251M-R02 GTCX25-261M-R02 GTCX25-301M-R02 GTCX25-351M-R02 GTCX25-401M-R02 GTCX25-421M-R02 GTCX25-471M-R02 GTCX25-501M-R02 GTCX25-551M-R02 GTCX25-601M-R02
@100V/s ±20% Tolerance
(V)
75 90 140 150 200 230 250 260 300 350 400 420 470 500 550 600
@100 V/µs (V)
450 450 500 500 600 600 600 700 800 900 900 900 1050 1100 1300 1300
@1000 V/µs (V)
550 550 600 600 700 700 700 800 900 1000 1000 1000 1150 1200 1400 1400
Note:X options: S: Surface-mount; A: Axial-leaded; N: No-leaded PartMarking : XX = lot code
DC Holdover Voltage
Per ITU K.12 (<150ms) (V) <52 <52 <80 <80 <135 <135 <135 <135 <150 <150 <150 <150 <150 <150 <150 <150
On-State Voltage
Nominal (@ 1A)
(V) 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20
Device Surge Rating, Capacitance, Insulation Resistance, UL
Listing
Part Number
Impulse Discharge
Current
Impulse Life
AC Discharge
Current (1sec duration;
10 hits)
Capacitance
8x20µs 10 hits
10x1000µs 300 hits
@50 Hz
@1Mhz
GTCX25-xxxM-R02
2.5kA
Devices <=90V measured @ 50V Devi.