2033-80 BOURNS | Alldatasheet

Document overview

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Technical content

Features

n Performance stability over life n High insulation resistance n UL pending n RoHS compliant*

Applications

n DC power supply protection (48 V) Characteristics

2033 Series Gas Discharge Tube Surge Protector

*RoHS Directive 2015/863, Mar 31, 2015 and Annex. Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. Test Methods per ITU-T (CCITT) K.12 and IEEE C62.31 Notes: (1) DC current source 30 A max.

  • At delivery AQL 0.65 Level II, DIN ISO 2859.
  • Bourns recommends reflowing surface mount devices per IPC/JEDEC J-STD-020 rev. D Characteristic Model No. 2033-80 2033-140 DC Sparkover ± 30 % @ 100 V/s 800 V 1400 V Impulse Sparkover 1.2/50 µs, 6 kV < 2000 V < 2300 V Impulse Sparkover 1.2/50 µs, 6 kV See Figure 1, C1-C4 100 pF < 900 V < 950 V The Bourns® Model 2033 Series is a 2-electrode 5-stack GDT surge arrestor device designed for use with DC power supplies. The series is high current rated with low capacitance and allows for reset of the arrestor without use of external components. *RoHS COMPLIANT LEAD FREE *RoHS COMPLIANTVERSIONS AVAILABLE LEAD FREE VERSIONS ARE RoHS COMPLIANT* How to Order 2033 - xx - G5 - xx LF Model Number Designator Voltage (Divided by 10) 80 = 800 V 140 = 1400 V Number of Gas Chambers G5 = Five Chambers Packaging Blank = Bulk T1 = Tape and Reel RoHS Compliancy LF = RoHS Compliant Product Typical Part Marking 2033 2033 Asia-Pacific: Tel: +886-2 2562-4117 • Email: asiacus@bourns.com EMEA: Tel: +36 88 520 390 • Email: eurocus@bourns.com The Americas: Tel: +1-951 781-5500 • Email: americus@bourns.com www.bourns.com

3312 - 2 mm SMD Trimming Potentiometer Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. Optimizing Model 2033 Series Stacked GDT Turn-on Performance Application In high current 48 Vdc supply applications, multiple GDTs are required to be connected in series so that the sum of the arc voltages exceed the dc supply voltage. The combined arc voltages of the stacked GDT (typically 12 V x 5 = 60 V) exceed the 48 Vdc supply which is then not capable of providing enough current to maintain the GDT in an on-state of operation. A stacked GDT design allows for proper reset of the GDT after a transient event. The downside of a stacked design is that the summation of the individual GDT chamber sparkover voltages results in a device with a high impulse sparkover voltage. For example, if each chamber of the stacked GDT had an impulse sparkover voltage of 400 V, the total impulse sparkover for the entire GDT would be 5 x 400 V (2000 V). In many cases, this higher sparkover voltage can have a negative impact to downstream components if their voltage sensitivity is less than the impulse sparkover of the stacked GDT. Solution High impulse sparkover can be improved by utilzing decoupling capacitors across 4 of 5 individual chambers of the stacked GDT. Typical capacitor values can range from 100 pF to 1 nF. How it Works In its intial state, all component values are zero. Under a fast rising voltage ramp condition, there is a capacitive voltage division across GDT1 and C1. During the voltage ramp, most of the voltage appears across GDT1. When the voltage across GDT1 reaches its sparkover voltage (400 V), the voltage across GDT1 drops to its arc voltage which is typically around 12 V. As a result, the capacitor is charged to a value equaling the sparkover voltage less the arc voltage (example: 400 V - 12 V = 388 V) which is then applied to GDT2. When GDT2 reaches 400 V, it then attains sparkover and the process repeats itself until GDT5 finally attains sparkover. This cascading turn-on mechanism of the capacitively coupled GDT chambers result in a signficantly improved impulse sparkover voltage. Results In the table below, both 800 V and 1400 V stacked GDTs were compared using a 5 kV/µs voltage ramp. ITU K.12 recommends using a linear ramp as the best method for evaluating GDT impulse sparkover under fast rising voltage conditions. Impulse sparkover voltage limiting is signficantly improved versus using the stacked GDT discretely. It should be noted that there is some improvement in impulse limiting by using a larger capacitor (1 nF). However, the improvement in impulse limiting must be measured against the cost of using a larger capacitor. GDT1 GDT2 GDT3 GDT4 C1-C4 Capacitor Values Model 2033-80 Typical Impulse Sparkover @ 5 kV/µs Model 2033-140 Typical Impulse Sparkover @ 5 kV/µs No Capacitor 2200 V 2400 V 100 pF 700 V 988 V 1 nF 600 V 886 V NOTE: Impulse sparkover in the characteristic table on Page 1 is shown under combination wave conditions (8/20 µs current/1.2x50 µs voltage). This non-linear voltage condition will give results different than under a linear ramp speed. The typical values in the table above will differ. Figure 1

3312 - 2 mm SMD Trimming Potentiometer Specifications are subject to change without notice. The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. Users should verify actual device performance in their specific applications. REV. A 02/18 Packaging Specifications The Model 2033-xx-G5 ships standard bulk, 100 pieces per plastic tray, 500 pieces per box. Tape and Reel option available; 250 pieces per 13-inch reel. DIMENSIONS: MM (INCHES) DIMENSIONS: MM (INCHES) 17.4 (.685) 6.0 (.236) 3.18 (.125) 1.5 (.059) 16.3 ± 0.5 (.642 ± .020) 8.0 ± 0.3 (.315 ± .012) 0.5 ± 0.1 (.020 ±.004) 4.0 (.157) 8.4 ± 0.2 (.331 ± .008) 9.5 ± 0.3 (.374 ± .012) 9.3 ± 0.3 (.366 ± .012) DIA. 0.5 (.020) B140 2033 16.00 ± 0.10 (.059 +.004/-0) 0.50 (.020) DIA. 4.00 ± 0.10 (.157 ± .004) 2.00 ± 0.10 (.079 ± .004) 1.75 ± 0.10 (.069 ± .004) 17.00 (.669) 32.00 ± 0.30 (1.260 ± .012) 28.40 ± 0.10 (1.118 ± .004) 14.20 ± 0.10 (.559 ± .004) 9.90 (3.90) 10.40 (.409) 8.60 (.339) DIMENSIONS: MM (INCHES) 17.4 (.685) 6.0 (.236) 3.18 (.125) 1.5 (.059) 16.3 ± 0.5 (.642 ± .020) 8.0 ± 0.3 (.315 ± .012) 0.5 ± 0.1 (.020 ±.004) 4.0 (.157) 8.4 ± 0.2 (.331 ± .008) 9.5 ± 0.3 (.374 ± .012) 9.3 ± 0.3 (.366 ± .012) DIA. 0.5 (.020) B140 2033