Features Applications

TN
■ Compact size: 5.5 mm diameter, ■ Telecommunications equipment

IA
PL
6 mm length
M
CO ■ Industrial equipment/electronics
S

■ Low capacitance
oH

■ Consumer electronics
*R

■ Low leakage
■ RoHS compliant*
■ UL Recognized

2057 Series Light Duty 2-Electrode Miniature Gas Discharge Tube

Characteristics

Test Methods per ITU-T K.12 and IEC 61643-311.

Model No.
Characteristic
2057-07 2057-09 2057-12 2057-13 2057-15 2057-23
DC Sparkover ±20 % @ 100 V/s 75 V 90 V 120 V 130 V 150 V 230 V
(1)
Impulse Sparkover
100 V/µs < 700 V < 600 V < 600 V < 600 V < 600 V < 600 V
1000 V/µs < 800 V < 700 V < 700 V < 700 V < 700 V < 700 V

Model No.
Characteristic
2057-25 2057-30 2057-35 2057-40 2057-47
DC Sparkover ±20 % @ 100 V/s 250 V 300 V 350 V 400 V 470 V
(1)
Impulse Sparkover
100 V/µs < 600 V < 700 V < 700 V < 800 V < 900 V
1000 V/µs < 700 V < 900 V < 900 V < 1000 V < 1100 V
(1)
Impulse Sparkover voltage is defined as typical values of distribution.

Insulation Resistance (IR) (2) ....................................50 / 100 / 250 Vdc ................................................. > 1 GΩ
Glow Voltage ...........................................................10 mA ..................................................................... ~ 70 V
Arc Voltage ..............................................................1 A .......................................................................... ~ 10 V
Glow-Arc Transition Current .................................................................................................................... < 1 A
Maximum Capacitance ............................................1 MHz ..................................................................... < 1 pF
Maximum Impulse Discharge Current .....................10,000 A, 8/20 µs .................................................. 1 operation
5,000 A, 8/20 µs ..................................................... 10 operations
Nominal Alternating Discharge Current ...................5 A, 50 Hz, 1 second .............................................. 1 operation
15 A, 9 cycles ........................................................ 1 operation
Impulse Life ............................................................100 A, 10/1000 µs .................................................. 300 operations
DC Holdover Voltage (3) ........................................................................................................................... < 150 ms
Operating Temperature............................................................................................................................ -40 to +90 ºC
Storage Temperature ............................................................................................................................... -40 to +90 °C
Climatic Category (IEC 60068-1)............................................................................................................. 40 / 90 / 21

Notes:
• UL Recognized component, UL File E153537.
• At delivery AQL 0.65, level II DIN ISO 2859

(2)
DC Sparkover Voltage DC Measuring Voltage
75–90 V 50 V
120–400 V 100 V
470 V 250 V

(3)
Network Applied
DC Sparkover Voltage DC Holdover Voltage
75–145 V 52 V
230–250 V 80 V
300–470 V 150 V

*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
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.
 2057 Series Light Duty 2-Electrode Miniature Gas Discharge Tube
Product Dimensions

0.8 ± 0.05
20
MIN. (.031 ± .002)
(0.78)
DIA.
LONG
2 PLCS.
5.5 +0.3/-0.5
(.217 + .012/-.020)
DIA.

MM
DIMENSIONS:
6.0 +0.3/-0.5 (INCHES)
(.236 +.012/-.020)

Packaging Specifications
Model 2057 ships standard bulk, 100 pcs. per tray; 5 trays per box (500 units). The optional reelpack (-BT1) contains 500 pcs. per reel;
2 reels per box (1K units).

6.0 + 1.4 330 ± 4.0

(.236 +.055) (12.992 ± .157)
MAX. DIA. 1.5
(.059)
TYP.

10.0 ± 0.5
(.394 ± .020)

100.0
(3.937)
TYP.

52 ± 2
(2.047 ± .079) MM
DIMENSIONS: 68.0
(INCHES) TYP.
(2.677)
64 ± 3
(2.520 ± .118)

How to Order
2057 - xx - B T1 LF
Model Number Designator Asia-Pacific:
Voltage (Divided by 10) Tel: +886-2 2562-4117
07 = 75 V 25 = 250 V Fax: +886-2 2562-4116
09 = 90 V 30 = 300 V
12 = 120 V 35 = 350 V
EMEA:
13 = 130 V 40 = 400 V Tel: +36 88 520 390
15 = 150 V 47 = 470 V Fax: +36 88 520 211
23 = 230 V
The Americas:
Leads
B = 0.8 mm
Tel: +1-951 781-5500
Fax: +1-951 781-5700
Packaging
(Blank) = Bulk Packaging (Standard) www.bourns.com
T1 = Reelpack (Optional)
RoHS Compliancy
LF = RoHS Compliant Product
REV. B 08/15
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.