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 Packaging No Suffix: standard Tray packaging -B: Bulk packaging (only upon special request) Material C : Ceramic with Fail-Short mechanism Type R : Radial Leads T : T Leads Surge Rating 10 : 10kA (10 times 8 x 20μs) Product Family Number of Electrodes 3 : Three Voltage Tolerance M : ± 20% N : ± 25% Diameter 7 : 7.5mm 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 A -40°C … +90°C -20°C … +65°C E -40°C … +90°C -20°C … +65°C B DEVICE RATINGS AND CHARACTERISTICS DC Sparkover Voltage (A-E) (B-E) Impulse Sparkover Voltage (A-E) (B-E) Insulation Resistance Capacitance DC Holdover Voltage Impulse Life (A+B-E) 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) Part Number @ 100V/s @ 100V/μs @ 1kV/μs @ 100VDC @ 1MHz Per ITU K.12 10/1000μs, 400A GTCR37-900M-P10 GTCR37-900M-P10-FS GTCT37-900M-P10 90V ± 20% ≤ 700V ≤ 850V ≥ 10,000MΩ1 ≤ 3.0pF ≤ 52V 300 times 20kA 10kA 130A 10A GTCR37-151M-P10 GTCR37-151M-P10-FS GTCT37-151M-P10 150V ± 20% ≤ 700V ≤ 850V ≥ 10,000MΩ1 ≤ 3.0pF ≤ 52V 300 times 20kA 10kA 130A 10A GTCR37-201N-P1 GTCR37-201N-P10-FS GTCT37-201N-P10 200V ± 25% ≤ 500V ≤ 650V ≥ 10,000MΩ ≤ 3.0pF ≤ 135V 300 times 20kA 10kA 130A 10A GTCR37-231M-P10 GTCR37-231M-P10-FS GTCT37-231M-P10 230V ± 20% ≤ 500V ≤ 650V ≥ 10,000MΩ ≤ 3.0pF ≤ 135V 300 times 20kA 10kA 130A 10A GTCR37-251M-P10 GTCR37-251M-P10-FS GTCT37-251M-P10 250V ± 20% ≤ 500V ≤ 650V ≥ 10,000MΩ ≤ 3.0pF ≤ 135V 300 times 20kA 10kA 130A 10A GTCR37-261M-P10 GTCR37-261M-P10-FS GTCT37-261M-P10 260V ± 20% ≤ 500V ≤ 650V ≥ 10,000MΩ ≤ 3.0pF ≤ 135V 300 times 20kA 10kA 130A 10A GTCR37-301M-P10 GTCR37-301M-P10-FS GTCT37-301M-P10 300V ± 20% ≤ 600V ≤ 750V ≥ 10,000MΩ ≤ 3.0pF ≤ 135V 300 times 20kA 10kA 130A 10A GTCR37-351M-P10 GTCR37-351M-P10-FS GTCT37-351M-P10 350V ± 20% ≤ 600V ≤ 750V ≥ 10,000MΩ ≤ 3.0pF ≤ 150V 300 times 20kA 10kA 130A 10A GTCR37-401M-P10 GTCR37-401M-P10-FS GTCT37-401M-P10 400V ± 20% ≤ 700V ≤ 850V ≥ 10,000MΩ ≤ 3.0pF ≤ 150V 300 times 20kA 10kA 130A 10A GTCR37-551M-P10 GTCR37-551M-P10-FS GTCT37-551M-P10 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 Gas Discharge Tube Three Electrode 7.5mm Diameter 308 Constitution Drive Menlo Park, CA 94025-1164 Phone: 800-227-4856 www.circuitprotection.com 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 --- C MAX 12.0 0.47 MIN 7.3 0.29 D MAX 7.7 0.30 MIN 6.5 0.26 E MAX 7.5 0.30 MIN 4.1 0.16 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 --- B MAX 12.0 0.47 MIN --- * Rounded off approximation C MAX 9.3 0.37 MIN --- D MAX 8.0 0.32 MIN 6.5 0.26 D1 MAX 7.5 0.30 MIN 6.0 0.24 E MAX --- MIN 4.1 0.16 MAX 4.7 0.19 ∅d NOM 1.0 0.04 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 --- approximation D MAX 12.0 0.47 MIN 23.0 0.91 D1 MAX 29.0 1.14 MIN 28.0 1.10 MAX 32.0 1.26 ∅d NOM 1.0 0.04 * Rounded off 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 Bulk* ( vacuum bags) Tray Standard Box Quantity 200 100 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. 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