MICROTEMP Thermal Fuses: Introduction

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Clement Stokes
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1 Introduction G4 G5 G7 Therm-O-Disc is a world leader in chemical pellet style thermal fuses. Microtemp Thermal Fuses are available in a variety of standard and custom configurations, providing reliable one-shot over-temperature protection for a wide variety of applications. MICROTEMP thermal fuses from Therm-O-Disc represent the global standard in thermal fuses. MICROTEMP thermal fuses offer an accurate, reliable solution to the need for upper limit temperature protection against overheating by interrupting an electrical circuit when operating temperatures exceed the rated temperature of the thermal fuse. MICROTEMP features: One-shot operation cuts off electrical power Current interrupt capacity up to VAC Low resistance Compact Size sales@atcomhq.com

G5 The G5-series is rated for continuous operating currents up to 20 amps at

2 Summary G4 The G4-series is rated for continuous operating currents up to 10 amps at 250 VAC. G5 The G5-series is rated for continuous operating currents up to 20 amps at 250VAC. G7 The G7 series is two thirds the size of the G4 & G5, but is rated for continuous operating currents up to 5 amps at 250VAC. Distributed by:

3 Electrical Rating Summary Agency G4 Series G5 Series G7 Series Resistive Inductive Resistive Resistive Inductive UL/CSA 10A/250VAC 15A/120VAC 5A/24VDC 8A/250VAC 14A/120VAC 20A/250VAC 25A/120VAC 21A/240VDC 20A/277VAC 5A/250VAC 5A/24VDC 8A/250VAC 14A/120VAC VDE 10A/250VAC 15A/120VAC 5A/24VDC 8A/250VAC 14A/120VAC 20A/250VAC 5A/250VAC 5A/24VDC 8A/250VAC 14A/120VAC METI 10A/250VAC -- 15A/250VAC 5A/250VAC 5A/24VDC -- CCC 10A/250VAC -- 16A/250VAC 5A/250VAC -- MICROTEMP G4 and G7 series thermal cutoffs have published electrical ratings for direct current (DC) applications. Current interruption capacity in DC circuits is highly application sensitive. Therm-O-Disc recommends thorough testing of DC electrical applications using the testing guidelines outlined in Therm-O-Disc s MICROTEMP product bulletin & application notes. MICROTEMP thermal cutoffs are recognized by the major approval agencies throughout the world for AC circuit applications. These agency electrical ratings can be used as a guideline when evaluating specific thermal cutoff applications. The electrical and thermal conditions to which the thermal cutoff may be exposed in an application may differ slightly from agency test conditions. DO NOT rely solely on agency ratings. Adequate testing must done to make sure the TCO you have selected is the appropriate one for your application and that it will operate as intended.

The temperature where the Thermal Fuse is installed reaches the Open or rises

4 Fuse Operation The temperature where the Thermal Fuse is installed is equal to or lower than the Holding. The fuse does not trip, keeping the circuit closed. The temperature where the Thermal Fuse is installed reaches the Open or rises higher than the Open. The fuse trips, opening the circuit. The Thermal Fuse must be replaced.

5 G4 Series PART NUMBER Open Temp T f C Holding T h C Maximum Overshoot T m C G4A01072C G4A01077C G4A01084C G4A01093C G4A01098C G4A01104C G4A01110C G4A01117C G4A01121C G4A01128C G4A01152C G4A01167C G4A01192C G4A01216C T m - T f T h NOTE: C.T.I. : NOTE: Maximum overshoot temperature: temperature up to which the TCO will not change status. Functioning open temperature tolerance: +0, -5 C Maximum temperature of the MICROTEMP TCO measured at the case end of the thermal cutoff at which the thermal cutoff can be maintained for a period of 168 hours without opening. It is advised that TCOs are not exposed to continuous operating temperatures in excess of T f -25 C Comparative tracking index (all primary thermal cutoffs): 250VAC G4, G5, G7, G8 Series TCOs with T f > 175 C comply with UL conductive heat aging (CHAT) requirements. G4A01229C G4A01240C For a complete list of available temperatures please refer to the official product bulletin:

G5 Series PART NUMBER Open Temp T f C Holding T h C Maximum Overshoot T m C G5A01072C G5A01084C G5A01093C G5A01098C 72 84 93 98 57 69 78 83 175 215 215 T m - T f Maximum overshoot temperature:

6 G5 Series PART NUMBER Open Temp T f C Holding T h C Maximum Overshoot T m C G5A01072C G5A01084C G5A01093C G5A01098C T m - T f Maximum overshoot temperature: temperature up to which the TCO will not change status. Functioning open temperature tolerance: +0, -5 C G5A01144C G5A01152C G5A01167C G5A01184C G5A01192C G5A01216C G5A01240C T h NOTE: C.T.I. : Maximum temperature of the MICROTEMP TCO measured at the case end of the thermal cutoff at which the thermal cutoff can be maintained for a period of 168 hours without opening. It is advised that TCOs are not exposed to continuous operating temperatures in excess of T f -25 C Comparative tracking index (all primary thermal cutoffs): 250VAC NOTE: G4, G5, G7, G8 Series TCOs with T f > 175 C comply with UL conductive heat aging (CHAT) requirements. For a complete list of available temperatures please refer to the official product bulletin:

7 G7 Series PART NUMBER Open Temp T f C Holding T h C Maximum Overshoot T m C G7F01077C G7F01084C G7F01093C G7F01098C T m - T f Maximum overshoot temperature: temperature up to which the TCO will not change status. Functioning open temperature tolerance: +0, -5 C G7F01128C G7F01144C G7F01152C G7F01184C T h NOTE: Maximum temperature of the MICROTEMP TCO measured at the case end of the thermal cutoff at which the thermal cutoff can be maintained for a period of 168 hours without opening. It is advised that TCOs are not exposed to continuous operating temperatures in excess of T f -25 C C.T.I. : Comparative tracking index (all primary thermal cutoffs): 250VAC NOTE: G4, G5, G7, G8 Series TCOs with T f > 175 C comply with UL conductive heat aging (CHAT) requirements. For a complete list of available temperatures please refer to the official product bulletin:

Standard Dimensions Label Dimensions Inches (millimeters) G4, G5, Series G7 Series Long Leads (In stock version) A. B. C. Overall Length +/- 0.

8 Standard Dimensions Label Dimensions Inches (millimeters) G4, G5, Series G7 Series Long Leads (In stock version) A. B. C. Overall Length +/ (+/-3) Epoxy Lead Length (Reference Only) Case Lead Length +/-0.06 (+/-1.5) 3.26 (82.8) 1.30 (33.0) 1.38 (34.9) 3.26 (82.8) 1.50 (38.1) 1.38 (34.9) Lead Material & Lead Diameter D. D. E. E. Case Lead Diameter Case Lead Material Epoxy Lead Diameter Epoxy Lead Material (1.0) Tin-Plated Copper (1.0) Silver Plated Copper (0.57) Tin-Plated Copper (0.57) Silver Plated Copper Case Dimension F. G. Case Length (Reference Only) Case Diameter (Reference Only) 0.58 (14.7) (4.0) 0.38 (9.6) (3.0)

Date Code Information Digit # 1 2 3 4,5,6 Plant Code Shenzhen, China Binh Duong, Vietnam S V Year Code 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 X Y Z A B C D E F G H Month Code January

9 Date Code Information Digit # ,5,6 Plant Code Shenzhen, China Binh Duong, Vietnam S V Year Code X Y Z A B C D E F G H Month Code January February March April May June July August September October November December A B C D E F G H J K L M Work Order Code / Internal Use Date Code Example: SYLBEY S Y L BEY Manufactured in Shenzhen, China Year 2011 Month November Work Order Code

Color Codes C 72 73 77 84 91 93 98 104 110 117 121 128 134 141 144 152 158 167 172 184 190 192 205 216 229 240

10 Color Codes C G Series Epoxy Color Tan Yellow Green Dark Blue Black Brown Red Light Gray Lime Light Blue Light Pink G4 G5 G7

11 Notes: Distributed by:

12 Ordering Information Address: 678 Andover Street, Unit 6 Lawrence, MA Web: sales@atcomhq.com Phone Main: Sales: Fax Main: Sales: This datasheet covers the G series Thermal Fuses stocked by Atlantic Components as standard items. To see the entire product offering please refer to the MICROTEMP Thermal Fuse Product Bulletin : Rev

PC3SD21NTZ Series. VDRM : 600V Zero cross type DIP 6pin Phototriac Coupler for triggering

PC3SD21NTZ Series. VDRM : 600V Zero cross type DIP 6pin Phototriac Coupler for triggering PCSDNTZ Series Non-zero cross type is also available. (PCSDNTZ Series) VDRM : 00V Zero cross type DIP pin Phototriac Coupler for triggering Description Phototriac Coupler include an infrared emitting diode