Transcript
Gas Discharge Tubes SE Series
SE Series
RoHS
Description
Littelfuse SE series GDT offers high surge ratings in a miniature package. It’s designed for surface mounting on PCB with small size 3.2x1.6x1.6mm. Low insertion loss is perfectly suited to broadband equipment applications. The capacitance does not vary with voltage, and will not cause operational problems with ADSL2+, where capacitance variation across Tip and Ring is undesirable. These devices are extremely robust and are able to divert a 500A-600A pulse in a miniature package 1206 without destruction. Features Agency Approvals AGENCY
AGENCY FILE NUMBER
E128662
2 Electrode GDT Graphical Symbol
• RoHS compliant and Lead-free • GHz working frequency • Excellent stability on multiple pulse duty cycle • Excellent response to fast rising transients. • Ultra Low Insertion Loss • 0.5-0.6KA surge capability tested with 8/20μS pulse as defined by IEC 61000-4-5
Applications
Additional Information
• Communication Datasheet
Resources
• Ultra small devices offered in a variety of mounting lead forms • Non-Radioactive • Low capacitance (<0.5pF) • Voltage Ranges 140V to 500V • UL recognized • Conforms to ITU-T K12, IEC 1000-4-5 • Square Outline
Samples
equipment • CATV equipment • Test equipment • Data lines • Power supplies • Telecom SLIC protection
• Broadband equipment • ADSL equipment, including ADSL2+ • XDSL equipment • Satellite and CATV equipment • General telecom equipment
© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/06/15
Gas Discharge Tubes SE Series
Electrical Characteristics Device Specifications (at 25°C) DC Breakdown Impulse Impulse in Volts Breakdown Breakdown in Volts In Volts (@100V/s)
200 260 230 276 350 495 470 611 500 600
(@1A)
MAX
800
900
700 600 900 1050 1050
1100 800 1150 1200 1200
(x10 @8/20µs) (x10 @5/320µs)
MIN
MAX
>1GΩ (at 100VDC)
<0.5 pf <0.3 pf <0.5 pf <0.5 pf <0.3 pf <0.3 pf
<1.0 A <1.0 A <1.0 A <1.0 A <1.0 A <1.0 A
~10 V
0.5 kA ~60 V
150 A 0.5 kA 0.5 kA
Tape and Reel Dimensions (IEC 60286-3, dimension in mm)
Device Tin Plated 17.5±12.5 Microns Construction Ceramic Insulator.
Storage and Operational Temperature
Glow Glow Nominal Nominal to Arc Voltage Impulse Impulse Transition Discharge Discharge Current Current Current
(@1 Kv/µsec)
Product Characteristics Materials
Arc Voltage
-40 to +90 °C
IEC 60286-3 in mm Dimensions Dimensions in mm
3.7 ±0.1
Max dynamic breakover voltage
2 ±0.1
A
A
R0.5 typical
4 ±0.1
A4 ±0.10
B
3 ±0.1
1.9 ±0.1
5°
2 ±0.1
+0.3
12
+0.3 0
4.9 ±0.1 5°
5°
0.4 ±0.05 0.4 ±0.05
Voltage vs. Time Characteristic
section B-B
section B-B
section section A-A A-A
5°
2.1 ±0.1
Tape Specifications
Tape Specifications IEC 60286-3
1.75 ±0.1
140 172 265 329 400
(@1MHz)
1.75 ±0.1
SE200 SE230 SE350 SE470 SE500
(@100V/µs)
Capacitance
12 - 0.15.5 ±0.1 5.5 ±0.1
Part Number MIN TYP MAX SE140 98 140 182
Insulation Resistance
Life Ratings
±0.05 Ø 1.55 1.5 Ø 1.6 ±0.1 ±0.05
B 3.65 ±0.1
B
8 ±0.1
B
SMD-Tape has to withstand
Force of SMD-Tape has to withstand 4 ±0.1 a minimum
Ø 1.1 ±0.1
A
F > 20 N / pocket Force of a minimum 2 Kg / pocket F > 20 N / pocket minimum 2vertical load Kg / pocket (minimum checking minimum vertical load quantity:10 pockets)
Voltage (V)
(minimum checking quantity:10 pockets)
Hold-over voltage
Reel Specifications
IEC 60286-3 Reel Specifications Dimensions IEC 60286-3in mm
On-State voltage
Dimensions in mm
0
200
400
600
800
1000
1200
Time (ns)
1.5 min.
12.8 min. 18.4 max.
R0.75
18.4 max.
12.4 +2/-0
12.4 +2/-0
11.9 min.
© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/06/15
11.9 min.
Ø330 max.
R0.75
Ø100 min.
12.8 min.
Ø100Ø330 min. max.
20.2 min. 20.2 min.
1.5 min.
Gas Discharge Tubes SE Series
Soldering Parameters - Reflow Soldering (Surface Mount Devices) Pb – Free assembly
Pre Heat
- Temperature Min (Ts(min))
150°C
- Temperature Max (Ts(max))
200°C
- Time (Min to Max) (ts)
60 – 180 secs
Average ramp up rate (Liquidus Temp (TL) to peak
3°C/second max
TS(max) to TL - Ramp-up Rate
5°C/second max
Reflow
- Temperature (TL) (Liquidus)
217°C
- Temperature (tL)
60 – 150 seconds 260
Time within 5°C of actual peak Temperature (tp)
10 – 30 seconds 6°C/second max
Time 25°C to peak Temperature (TP)
8 minutes Max.
Do not exceed
260°C
Device Dimensions
Ramp-down
TS(min)
Preheat
tS time to peak temperature (t 25ºC to peak)
Time
Part Numbering System and Ordering Information
SE xxx
Dimensions in mm and inch [...]
Series
[0.063+/- 0.008] 1.6+/- 0.2
1206 Square GDT
Breakdown Voltage
[0.063+/- 0.008] 1.6+/- 0.2
[0.126 +/- 0.012] 3.2+/-0.3
140 = 140V 200 = 200V 230 = 230V 350 = 350V 470 = 470V 500 = 500V
[0.157] 4
[0.094] 2.4
tL
°C
Ramp-down Rate
[0.047] 1.2
Critical Zone TL to TP
Ramp-up
TL TS(max)
25
Peak Temperature (TP)
+0/-5
tP
TP
Temperature
Reflow Condition
[0.063] 1.6
Packaging Part Number
Recommended Pad Layout
Packaging Option
Quantity
SE140
Tape and Reel
3,000
SE200
Tape and Reel
3,000
SE230
Tape and Reel
3,000
SE350
Tape and Reel
3,000
SE470
Tape and Reel
3,000
SE500
Tape and Reel
3,000
© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/06/15
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Littelfuse: SE230 SE200 SE350 SE140 SE500 SE470 SE240
