2R470-4S,陶瓷放电管

Lead-Free Recommendation
(Typical Industry Recommendation)
Temperature Minimum: Temperature Maximum: Preheat Time: Solder Pot T emperature: Solder Dwell Time:
s(min)
TP TL TS(max) TS(min)
Preheat
tP
Ramp-up Critical Zone TL to T P
) )
150°C 200°C 60 – 180 secs 3°C/second max 5°C/second max 217°C 60 – 150 seconds 260+0/-5 °C 10 – 30 seconds 6°C/second max
(Depends on Flux Activatperature (°C) - Measured on bottom side of board
280 260 240 220 200 180 160 140 120 100 80 60 40 20 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 10 20 30 40 50 70 80 90 60 0 0
Features
! ! ! !
Size:4.2mm*4.0mm DC Spark-over voltage: 75~2000V Stable breakdown voltage. High insulation resistance.
4.0 ± 0.2
! Low capacitance (<1pF) ! High holdover voltage. ! Large absorbing transient current capability. ! Low Capacitance ! Micro-Gap Design
P
tS
time to peak temperature (t 25ºC to peak)
25
Time
)
8 minutes Max. 260°C
Soldering parameters -wave soldering
300
Recommended process parameters
Wave Parameter Preheat:
100° C 150° C 60-180 seconds 280° C Maximum 2-5 seconds
Time (Seconds) Preheat Time Dwell Time Cooling Time
2R470-4S
Part Number
(KA)
DC Spark-over Voltage 75-90V 150-400V 470-800V 1000-2000V
DC Measuring Voltage 50V 100V 250V 500V
2R470-4S
2R470-4S
Pb – Free assembly - Temperature Min (T Pre Heat - Temperature Max (T - Time (Min to Max) (t
Electriacl Characteristics
DC Spark-over Voltage 100V/S (V) 2R075-4S 2R090-4S 2R150-4S 2R230-4S 2R250-4S 2R300-4S 2R350-4S 2R400-4S 2R470-4S 2R600-4S 2R800-4S 2R1000-4S 2R1200-4S 2R1400-4S 2R1500-4S 2R1600-4S 2R1800-4S 2R2000-4S 75±20% 90±20% 150±20% 230±20% 250±20% 300±20% 350±20% 400±20% 470±20% 600±20% 800±20% 1000±20% 1200±20% 1400±20% 1500±20% 1600±20% 1800±20% 2000±20% Maximum Impulse Breakdown Voltage 100V/ μs (V) 700 700 600 600 600 600 650 700 800 900 1300 1500 1700 1700 2000 2000 2500 2700 1KV/ μs (V) 800 800 800 700 700 700 800 800 900 1000 1400 1600 1800 1800 2100 2100 2600 2600 5 5 5 5 5 5 5 5 5 5 3 3 3 3 3 3 3 3 Max. Impulse Impulse Discharge Life Current (10/1000μs) (8/20μs) 1 times 10 times 300 A Times 3 3 3 3 3 3 3 3 3 3 2 2 2 2 2 2 2 2 300 300 300 300 300 300 300 300 300 300 100 100 100 100 100 100 100 100 3 3 3 3 3 3 3 3 3 3 2 2 2 2 2 2 2 2 Normal Alternating Discharge Current 50Hz 1Sec (A) 6 6 6 6 6 6 6 6 6 6 4 4 4 4 4 4 4 4 Single 9 Cycles DC Holdover Voltage <150ms (V) 52 52 80 150 150 150 150 150 150 150 150 150 150 150 150 150 150 150 (GΩ) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 (pF) 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Minimum Insulation Resistance Maximum Capacitance (1MHz)
3.5
5.0
1.3
Product Name
2
R
X
X
X
-
4
S
Stable breakdown voltage 2R : 2 Electrodes
DC Spark-over Voltage
Dimensions 4 : 4.2mm*4.0mm
Lead Type S:SMD
2R470-4S
2R470-4S
s
)
Tem p er at u r e
s(max)
tL
Ramp-down
Average ramp up rate (Liquidus T emp (TL) to peak TS(max) to TL - Ramp-up Rate - Temperature (T L) (Liquidus) - Temperature (t L) Peak T emperature (T P) Time within 5°C of actual peak Temperature (t p ) Ramp-down Rate Time 25°C to peak T emperature (T Do not exceed
0.5 ± 0.1
4.2 ± 0.2
Applications
! ! ! ! ! ! !
Cable Modem xDSL Set-Top Box Satellite and CATV equipment Power supplier Consumer electronics General telecom equipment
2R470-4S
2R-4S SERIES
GAS DISCHARGE TUBES
Gas discharge tubes (GDT) use noble gasses enclosed in ceramic tubes to provide an alternate circuit path for voltage spikes.The ceramic envelope and with nickel connectors allow for high loads and Ruilon offers products that function at 20KA,40KA,50KA,60KA,100KA&150KA.The breakdown voltages of the devices have a wide range (up to 20% tolerance).Major applications are high frequency telecommunication lines,stations, security systems,HID and high quality Surge Protection Devices (SPD).