High-Frequency Relay G6Y Design Based on Micro Strip Line Technology Isolation characteristics of 65 dB or better at 900 MHz Effective insertion loss characteristics of 0.2 dB or better at 900 MHz (half the loss of earlier models) Fully-scaled construction Improved shock-resistance Applications include cable TV, cellular communication, HDTV, fax machine, satellite communications, pay TV, VCRs, and test and measurement equipment Ordering Information To order: Select the part number and add the desired coil voltage rating (e.g. G6Y-1-DC12). Type Contact form Construction Part number Standard SPDT Fully-sealed G6Y-1 Specifications COIL DATA Rated g voltage (VDC) Rated current ((mA)) Coil resistance ((Ω)) 5 40.0 125 6 33.3 180 9 22.2 405 12 16.7 720 24 8.3 2,880 Must operate voltage Must dropout voltage Maximum voltage Power consumption ( W) (mW) 10% min. 150 at 23°C (73°F) 130 at 70°C (158°F) (158 F) Approx. 200 % of rated voltage 75% max. Note: The rated current and coil resistance are measured at a coil temperature of 23°C with a tolerance of ±10%. The operating characteristics are measured at a coil temperature of 23°C. The “Max. allowed voltage” is the maximum voltage that can be applied to the relay coil. It is not the maximum voltage that can be applied continuously. G6Y G6Y CONTACT DATA Load Resistive load (p.f. = 1) Rated load 0.01 A at 30 VAC 0.01 A at 30 VDC 900 MHz, 1 W (See Note.) Contact material Au clad Cu alloy Max. carry current 0.5 A Max. operating voltage 30 VAC 30 VDC Max. operating current 0.5 A Max. switching capacity AC10 VA DC10 W Min. permissible load 10 mA at 10 mVDC Note: This value is for a load with VSWR 1.2. HIGH-FREQUENCY CHARACTERISTICS Item 250 MHz 900 MHz 2.5 GHz Isolation 80 dB min. 65 dB min. 30 dB min. Insertion loss VSWR 0.5 dB max. 1.5 max. 0.5 dB max. 1.5 max. consult factory Max. carry power 10 W Max. operating power 10 W (See Note 2.) Note: 1. The impedance of the measuring system is 50 Ω. The table above shows preliminary values. 2. This value is for a load with VSWR 1.2. CHARACTERISTICS Contact resistance (See Note 2.) 100 mΩ max. Operating time 10 ms max. (approx. 5 ms) Release time 5 ms max. (approx. 1 ms) Insulation resistance 100 MΩ min. (at 500 VDC) Dielectric strength g 1,000 VAC, 50/60 Hz for 1 min between coil and contacts 500 VAC, 50/60 Hz for 1 min between contacts of same polarity 500 VAC, 50/60 Hz for 1 min between coil and ground and between contacts and ground Vibration resistance Destruction: 10 Hz to 55 Hz, 1.5 mm double amplitude Malfunction: 10 Hz to 55 Hz, 1.5 mm double amplitude Shock resistance Destruction: 1,000 m/s2 (approx. 100G) Malfunction: 1,000 m/s2 (approx. 100G) Life expectancy Mechanical: 1,000,000 operations min. (at 1,800 operations/hr.) Electrical: 300,000 operations min. (under rated load at 1,800 operations/hr.) Ambient b e temperature e eaue Ambient humidityy Weight Operating --40°C to 70°C (--40°F to 158°F) with no icing Storage --40°C to 70°C (--40°F to 158°F) with no icing Operating 35 to 85% Storage 35 to 85% Approx. 5 g Note: 1. The table above shows preliminary values at room temperature unless otherwise specified. 2. Measurement Conditions: 5 VDC, 100 mA, voltage drop method. G6Y G6Y Engineering Data AMBIENT TEMPERATURE VS. MAX. ALLOWED VOLTAGE RESISTANCE TO SHOCK Y 200 1,200 min. Max. allowed voltage (%) 1,000 1,200 min. 180 1,200 min. 800 X Z’ 600 400 160 200 (150) 200 140 400 (130) Z 120 1,200 min. 600 1,000 N.O. contact N.C. contact 1,200 min. Y’ 100 0 10 20 30 40 50 60 70 80 90 100 CONTACT RELIABILITY TEST (AMBIENT TEMPERATURE OF 23°C) Sample: G6Y-1, 12 VDC Quantity: 20 Units Conditions: Resistive load: 10 mVDC 0.01 mA Switching frequency: 120 times/minute N.O. contact N.C. contact Contact resistance 1,200 min. Units: m/s2 Y X Y’ Ambient temperature (°C) Note: The “Max. allowed voltage” is the maximum voltage that can be applied to the relay coil. It is not the maximum voltage that can be applied continuously. X’ 800 X’ Z Z’ Shock direction Quantity Tested: 10 Units Test Method: Shock was applied 3 times in each direction with and without excitation and the level at which the shock caused malfunction was measured. Rating: 500 m/s2 (approx. 50G) HIGH-FREQUENCY CHARACTERISTICS Measurement Conditions HP 8753D Network Analyzer 50-Ω Terminator G6Y-1 Terminals which were not being measured were terminated with 50 Ω Number of operations (×104) Note: The high-frequency characteristics data were measured using a dedicated circuit board and actual values will vary depending on the usage conditions. Check the characteristics of the actual equipment being used. G6Y ISOLATION CHARACTERISTICS INSERTION LOSS CHARACTERISTICS Isolation (dB) Insertion loss (dB) G6Y (AVERAGE VALUES) (AVERAGE VALUES) Frequency (MHz) Frequency (MHz) VSWR, RETURN LOSS OPERATING RELEASE TIME CHARACTERISTICS (AVERAGE VALUES) DISTRIBUTION (AMBIENT TEMPERATURE OF 23°C) 50 Operating time Sample: G6Y-1 Quantity: 50 Units Release time 40 Quantity Return loss (dB) Return loss 30 20 10 VSWR Frequency (MHz) 0 BOUNCE TIME DISTRIBUTION (AMBIENT TEMPERATURE OF 23°C) 50 Operating bounce time Subject: G6Y-1 Quantity: 50 Units Release bounce time Quantity 40 30 20 10 0 1 2 3 4 Time (ms) 5 6 7 8 1 2 3 4 5 Time (ms) 6 7 8 G6Y G6Y Dimensions Unit: mm (inch) G6Y-1 PCB Dimensions (Bottom View) Tolerances: ±0.1 mm. 2.54 (0.10) 20.7max. (0.81) 11.7max. (0.46) Terminal Arrangement/ Internal Connections (Bottom View) Six, 1.2-dia. holes Three, 0.8-dia. holes 2.54 (0.10) 1.83 (0.07) 7.62 (0.30) 9.2max. (0.36) 15.24 (0.60) 2.05 (0.08) 7.62 (0.30) 3 (0.12) 2.05 (0.08) 2.63 (0.10) 15.24 (0.60) 2.63 (0.10) Note: The shaded and unshaded parts indicate the product’s directional marks. (Holes for the coil terminals may also be 1.0.) Precautions CORRECT USE • The following graph shows this relationship. Seal integrity during cleaning will last for 1 minute at 70°C. • It is advantageous to use the Micro Strip Line in highfrequency transmission circuits because a low-loss transmission can be achieved with this method. By etching the dielectric base which has copper foil attached to both sides, the Micro Strip Line will have a concentrated electric field between the lines and ground, as shown in the following diagram. Lines with impedance Z Micro Strip impedance ( Ω ) Micro Strip Line Design Micro Strip (w/h) Ground pattern Dielectric base (dielectric constant: εr) • • The characteristic impedance of the lines ZO is determined by the kind of base (dielectric constant), the base’s thickness, and the width of the lines, as expressed in the following equation. = ε W: Line width Dielectric constant (εr) + π + π εr: Effective dielectric constant H: Dielectric base thickness The copper foil thickness must be less than H. • For example, when creating 50-Ω lines using a glass epoxy base with a thickness of 1.6 mm, the above graph will yield a w/h ratio of 1.7 for a dielectric constant of 4.8. Since the base thickness is 1.6 mm, the width will be h × 1.7 ≈ 2.7 mm. The thickness of the copper foil “t” is ignored in this design method, but it must be considered because large errors will occur in extreme cases such as a foil thickness of t ≈ w. In addition, with the Micro Strip Line design, the lines are too short for the G6Y’s intended frequency bandwidths, so we can ignore conductive losses and the line’s attenuation constant. The spacing of the Strip Lines and ground pattern should be comparable to the width of the Strip Lines. G6Y G6Y • • • Design the pattern with the shortest possible distances. Excessive distances will adversely effect the high-frequency characteristics. Spread the ground patterns as widely as possible so that potential differences are unlikely to develop between the ground patterns. To avoid potential short-circuits, do not place the pattern’s leads near the point where the bottom of the Relay attaches to the board. Bending the Micro Strip Line Strip Line with impedance Z Elbow Clip the corners 45°C When the lines must curve, an elbow can be used as shown in the diagram. A distance (D) between the lines of approximately twice the line width is sufficient. EXAMPLES OF MOUNTING DESIGNS Using a Single-sided Board Since this example emphasizes reducing mounting costs, expensive mounting methods, such as through-hole boards, are not shown. If such methods are to be used, the characteristics must be studied carefully, using the actual board configuration. When a single-sided board is used, isolation characteristics of only 60 dB to 70 dB at 200 MHz can be obtained. When high frequency bands are to be used with a single-sided board, a metal plate can be placed between the base and Relay and connected to the ground pattern. Using a Double-sided Paper Epoxy Board When double-sided paper epoxy boards are used, the dielectric constant will be approximately the same as that of glass epoxy boards (εr=4.8). Metal plate The width of the Strip Lines for a board with t=1.6 mm is 2.7 mm for 50 Ω and 1.8 mm for 75 Ω. For a board with t=1.0 mm the width is 1.7 mm for 50 Ω and 0.8 mm for 75 Ω. The following diagram shows an example pattern, and the Micro Strip Lines connected to the contact terminals are formed with pattern widths derived from the description above. The width between the Micro Strip Lines and ground patterns are comparable to the Micro Strip Line width. There are jumpers between the upper and lower patterns at the points marked with Xs in the diagram. Improved characteristics can be obtained with more jumper locations. This method yields isolation characteristics of 65 dB to 75 dB at 500 MHz and 50 dB at 900 MHz. At this point in the diagram the component side is the entire ground pattern side; but, you must set aside approximately 2.0 mm × 2.0 mm of the pattern for the contact terminals and coil terminals. Strip Line G6Y Coil Ground terminals G6Y Metal plate Printed circuit board Pattern With this method a metal plate is placed between the Relay and base and connected to the pattern, as shown in the above diagram. The important point here is that 3 locations (the G6Y’s ground terminal, the metal plate’s bent tabs (A), and the ground pattern) are soldered together at the same time. This method combines an inexpensive single-sided board and inexpensive metal plate to yield the same characteristics as a double-sided board. Good characteristics are obtained by grounding the G6Y’s ground terminal and metal plate in the same place. The metal plate must be attached to the base as described here. From this point, the methods used for Strip Line design are the same as for the double-sided board. G6Y G6Y Mounting Precautions Be sure to securely attach the Relay’s base surface to the board during installation. The isolation characteristics will be affected if the Relay lifts off the board. As shown in the enlarged illustration of the cross-section of part A, the G6Y is designed to ensure better high-frequency characteristics if the stand-off part of the G6Y is in contact with the ground pattern of the PCB. For this reason, the ground terminal and stand-off part are electrically connected internally. For example, if the terminal hole on the PCB is 1 mm in diameter and the length B shown in the illustration is 1.4 mm, a distance of 0.3 mm or more will be provided between the through hole and stand-off part. PCB Mounting Should the through hole electrically connected to the contact terminal come in contact with the stand-off part, the contact will be short-circuited with the ground, which may cause an accident. As a preventive measure, keep at least a distance of 0.3 mm between the stand-off part and the through hole or land. Part A Cross-section of Part A Stand-off part Ground pattern Through hole Contact terminal Ground terminal Ground terminal NOTE: DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters to inches divide by 25.4. OMRON ELECTRONICS, INC. OMRON CANADA, INC. One East Commerce Drive Schaumburg, IL 60173 885 Milner Avenue Scarborough, Ontario M1B 5V8 1-800-55-OMRON 416-286-6465 Cat. No. K104-E3-1 8/98 Specifications subject to change without notice. Printed in U.S.A.