PRODUCT: GTCx37
308 Constitution Drive Menlo Park, CA 94025-1164 Phone: 800-227-4856 www.circuitprotection.com
Gas Discharge Tube Three Electrode 7.5mm Diameter
Overvoltage Protection Device Raychem Circuit Protection Products
DOCUMENT: SCD 25821 REV LETTER: D REV DATE: MAY 25, 2007 PAGE NO.: 1 OF 6
Specification Status: Released
GENERAL DESCRIPTION BENEFITS
• • • • Helps provide overvoltage fault protection against high energy surges Suitable for sensitive equipment due to excellent impulse sparkover response Suitable for high-frequency applications Highly reliable performance
FEATURES
• • • • • • • Crowbar device with low arc-voltage Low capacitance and insertion loss High accuracy spark-over voltages for high precision designs Tested per ITU K.12 recommendations Optional Fail-Short mechanism Various lead configurations Non-radioactive materials
APPLICATIONS
• Telecommunications: - MDF modules, xDSL equipment, RF system protection • Industrial Electronics and Consumer Electronics, such as - Power Supplies, Surge Protectors, Alarm systems
SYMBOL
TYPICAL APPLICATION SCHEMATIC
PolySwitch Devices
SiBar Devices
PRODUCT: GTCx37
308 Constitution Drive Menlo Park, CA 94025-1164 Phone: 800-227-4856 www.circuitprotection.com
Gas Discharge Tube Three Electrode 7.5mm Diameter
Overvoltage Protection Device Raychem Circuit Protection Products
DOCUMENT: SCD 25821 REV LETTER: D REV DATE: MAY 25, 2007 PAGE NO.: 2 OF 6
PART NUMBERING
EXAMPLE:
GT C R 3 7 - 231 M - P 10 - FS Series GT : Gas Tube Material C : Ceramic Type R : Radial Leads T : T Leads Number of Electrodes 3 : Three Diameter 7 : 7.5mm Packaging No Suffix: standard Tray packaging -B: Bulk packaging (only upon special request) with Fail-Short mechanism Surge Rating 10 : 10kA (10 times 8 x 20μs) Product Family Voltage Tolerance M : ± 20% N : ± 25% Voltage Designator 900 : 90 x 10^0 = 90V 151 : 15 x 10^1 = 150V 201 : 20 x 10^1 = 200V 231 : 23 x 10^1 = 230V Etc..
DEVICE MARKING
EXAMPLE : GTCR37-231M-P10
23 P 10 GN Week of Manufacture
Per Raychem Circuit Protection lot number system : E.g. G = First half of 2004; N = week 14
Surge Rating: 10 : 10kA Product Family Voltage Designator 23 : 230 V Raychem Symbol
PRODUCT: GTCx37
308 Constitution Drive Menlo Park, CA 94025-1164 Phone: 800-227-4856 www.circuitprotection.com
Gas Discharge Tube Three Electrode 7.5mm Diameter
Overvoltage Protection Device Raychem Circuit Protection Products
DOCUMENT: SCD 25821 REV LETTER: D REV DATE: MAY 25, 2007 PAGE NO.: 3 OF 6
GENERAL CHARACTERISTICS
No Radioactive Materials Storage temperature: Devices without Fail-Short mechanism: Devices with Fail-Short mechanism: Operating temperature: Devices without Fail-Short mechanism: Devices with Fail-Short mechanism: Body: Nickel Plated Lead Material : Tin Plated UL 497B Pending
-40°C … +90°C -20°C … +65°C -40°C … +90°C -20°C … +65°C
A E B
DEVICE RATINGS AND CHARACTERISTICS
DC Sparkover Voltage (A-E) (B-E) Part Number @ 100V/s Impulse Sparkover Voltage (A-E) (B-E) @ 100V/μs @ 1kV/μs Insulation Resistance Capacitance DC Holdover Voltage Impulse Life (A+B-E) 10/1000μs, 400A Impulse Discharge AC Discharge Current, Current 8/20μs 50Hz (A+B-E) (A+B-E) Repeat 10 times Repeat 10 Single Single Hit, (5 times times Hit 9 Cycles each (1s interval) polarity) 20kA 10kA 130A 10A
@ 100VDC
@ 1MHz
Per ITU K.12
GTCR37-900M-P10 GTCR37-900M-P10-FS GTCT37-900M-P10 GTCR37-151M-P10 GTCR37-151M-P10-FS GTCT37-151M-P10 GTCR37-201N-P1 GTCR37-201N-P10-FS GTCT37-201N-P10 GTCR37-231M-P10 GTCR37-231M-P10-FS GTCT37-231M-P10 GTCR37-251M-P10 GTCR37-251M-P10-FS GTCT37-251M-P10 GTCR37-261M-P10 GTCR37-261M-P10-FS GTCT37-261M-P10 GTCR37-301M-P10 GTCR37-301M-P10-FS GTCT37-301M-P10 GTCR37-351M-P10 GTCR37-351M-P10-FS GTCT37-351M-P10 GTCR37-401M-P10 GTCR37-401M-P10-FS GTCT37-401M-P10 GTCR37-551M-P10 GTCR37-551M-P10-FS GTCT37-551M-P10
90V ± 20%
≤ 700V
≤ 850V
≥ 10,000MΩ1
≤ 3.0pF
≤ 52V
300 times
150V ± 20%
≤ 700V
≤ 850V
≥ 10,000MΩ1
≤ 3.0pF
≤ 52V
300 times
20kA
10kA
130A
10A
200V ± 25%
≤ 500V
≤ 650V
≥ 10,000MΩ
≤ 3.0pF
≤ 135V
300 times
20kA
10kA
130A
10A
230V ± 20%
≤ 500V
≤ 650V
≥ 10,000MΩ
≤ 3.0pF
≤ 135V
300 times
20kA
10kA
130A
10A
250V ± 20%
≤ 500V
≤ 650V
≥ 10,000MΩ
≤ 3.0pF
≤ 135V
300 times
20kA
10kA
130A
10A
260V ± 20%
≤ 500V
≤ 650V
≥ 10,000MΩ
≤ 3.0pF
≤ 135V
300 times
20kA
10kA
130A
10A
300V ± 20%
≤ 600V
≤ 750V
≥ 10,000MΩ
≤ 3.0pF
≤ 135V
300 times
20kA
10kA
130A
10A
350V ± 20%
≤ 600V
≤ 750V
≥ 10,000MΩ
≤ 3.0pF
≤ 150V
300 times
20kA
10kA
130A
10A
400V ± 20%
≤ 700V
≤ 850V
≥ 10,000MΩ
≤ 3.0pF
≤ 150V
300 times
20kA
10kA
130A
10A
550V ± 20%
≤ 850V
≤ 1,000V
≥ 10,000MΩ
≤ 3.0pF
≤ 150V
300 times
20kA
10kA
130A
10A
Note 1. Insulation Resistance measured at 50 VDC.
PRODUCT: GTCx37
308 Constitution Drive Menlo Park, CA 94025-1164 Phone: 800-227-4856 www.circuitprotection.com
Gas Discharge Tube Three Electrode 7.5mm Diameter
Overvoltage Protection Device Raychem Circuit Protection Products
DOCUMENT: SCD 25821 REV LETTER: D REV DATE: MAY 25, 2007 PAGE NO.: 4 OF 6
DIMENSIONS
Radial Leads, no Fail-Short mechanism (GTCR37-xxxx-P10)
A mm: in*: MIN --MAX 12.0 0.47 MIN 7.3 0.29
C MAX 7.7 0.30 MIN 6.5 0.26
D MAX 7.5 0.30 MIN 4.1 0.16
E MAX 4.7 0.19
∅d NOM 1.0 0.04
* Rounded off approximation
Radial Leads, with Fail-Short mechanism (GTCR37-xxxx-P10-FS)
A mm: in*: MIN --MAX 12.0 0.47 MIN ---
B MAX 9.3 0.37 MIN ---
C MAX 8.0 0.32 MIN 6.5 0.26
D MAX 7.5 0.30 MIN 6.0 0.24
D1 MAX --MIN 4.1 0.16
E MAX 4.7 0.19
∅d NOM 1.0 0.04
* Rounded off approximation
PRODUCT: GTCx37
308 Constitution Drive Menlo Park, CA 94025-1164 Phone: 800-227-4856 www.circuitprotection.com
Gas Discharge Tube Three Electrode 7.5mm Diameter
Overvoltage Protection Device Raychem Circuit Protection Products
DOCUMENT: SCD 25821 REV LETTER: D REV DATE: MAY 25, 2007 PAGE NO.: 5 OF 6
T Leads, no Fail-Short mechanism (GTCT37)
A mm: in*: MIN --MAX 12.0 0.47 MIN 23.0 0.91
D MAX 29.0 1.14 MIN 28.0 1.10
D1 MAX 32.0 1.26
∅d NOM 1.0 0.04
* Rounded off
approximation
PRODUCT: GTCx37
308 Constitution Drive Menlo Park, CA 94025-1164 Phone: 800-227-4856 www.circuitprotection.com
Gas Discharge Tube Three Electrode 7.5mm Diameter
Overvoltage Protection Device Raychem Circuit Protection Products
DOCUMENT: SCD 25821 REV LETTER: D REV DATE: MAY 25, 2007 PAGE NO.: 6 OF 6
FAIL-SHORT MECHANISM RESPONSE TIME (Graph represents typical values)
Note: Both electrodes simultaneously powered, each with the AC current value in the graph
PACKAGING
Packaging Quantity Bulk* ( vacuum bags) 200 Tray 100 Standard Box 1,000**
* Standard packaging is in trays. Bulk packaging is only available upon request. ** 5 bags or 10 trays
Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of each product for their applications. Tyco Electronics Corporation assumes no responsibility for the use of its product or for any infringement of patents or other rights of third parties resulting from the use of its product. No license is granted by implication or otherwise under any patent or proprietary right of Tyco Electronics except the right to use such product for the purpose for which it is sold. Tyco Electronics reserves the right to change or update, without notice, any information contained in this publication; to change, without notice, the design, construction, processing, or specification of any product; and to discontinue or limit production or distribution of any product. This publication supersedes and replaces all information previously supplied. Without expressed or written consent by an officer of Tyco Electronics, Tyco Electronics does not authorize the use of any of its products as components in nuclear facility applications, aerospace, or in critical life support devices or systems. Tyco Electronics’ only obligations are those in the Tyco Electronics Standard Terms and Conditions of Sale and in no case will Tyco Electronics be liable for any incidental, indirect, or consequential damages arising from the sale, resale, use, or misuse of its products.
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