Omron A5 Catalogue 2006 1-294 14/10/05 9:40 am Page 252 High-Frequency Signal Relay – G6Y Text Switching Structure Based on the Micro Strip Line is Used to Combine High Performance and Costeffectiveness ■ ROHS compliant. ■ 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 sealed construction provides excellent environmental resistance. ■ Improved shock-resistance (double the resistance of earlier models). Ordering Information Class Sealing Contact configuration Basic Type SPDT Fully sealed Rated coil voltage 4.5 VDC Model G6Y-1 5 VDC 9 VDC 12 VDC 24 VDC Model Number Legend (( VDC G6Y- 1 2 1. Number of contact poles 1: ■ Single pole (SPDT contact) Basic Specifications • Contact Mechanism: Double-braking bifurcated contact • Contact Material: Gold alloy 2. Rated Coil Voltage 4.5, 5, 9, 12, 24 VDC • Sealing: Fully sealed • Terminal Configuration: configuration Printed circuit board terminal Application Examples Signal Switching in Various Communications Equipment • Wired Communications: Cable TV, captain systems, and video response systems (VRS) • Wireless Communications: Transceivers, ham radio, car telephones, high-level TV, fax machines, satellite broadcasting, text multiplex broadcasting, and pay TV • Public Equipment: VCRs, TVs, video disk players, and TV games • Industrial Equipment: Measuring equipment, test equipment, and multiplex transmission devices 252 Omron A5 Catalogue 2006 1-294 14/10/05 9:40 am Page 253 Text High-Frequency Signal Relay – G6Y ■ Ratings Class Item Rated voltage (V) Basic Type DC Rated current (mA) Coil resistance (Ω) 4.5 44.4 101 5 40.0 125 9 22.2 405 12 16.7 720 24 8.3 2,880 Operating voltage (V) 75% max. Release voltage (V) 10% min. Max. allowed voltage (V) Power consumption (mW) 150% of rated voltage at 23˚C Approx. 200 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. Contact Ratings High-frequency Characteristics Load Resistive load 250 MHz 900 MHz 2.5 GHz Rated voltage 0.01 A at 30 VAC 0.01 A at 30 VDC 900 MHz, 1 W (see note) Isolation 80 db min. 65 dB min. 30 dB min. Insertion loss 0.5 dB max. 0.5 dB max. – Au V.SWR 1.5 max. 1.5 max. – Rated carry current 0.5 A Max. carry power 10 W – Max. switching voltage 30 VAC 30 VDC Max. switching power 10 W (see note 3) – Max. switching current 0.5 A Max. switching power (reference value) AC10VA DC10W Contact material Item Note: 1. The impedance of the measuring system is 50 Ω. 2. The table above shows preliminary values. 3. This value is for a load with V.SWR x 1.2 Note: This value is for a load with V.SWR x 1.2. ■ Characteristics Contact resistance (see note 1) 100 mΩ max. Operating time 10 ms max. (approx. 5 ms) Release time 5 ms max. (approx. 1 ms) Insulation resistance (see note 2) 100 mΩ min. Dielectric strength 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 to 10 Hz, 0.75-mm single amplitude (1.5 mm double amplitude) Malfunction: 10 Hz to 55 to 10 Hz, 0.75-mm single amplitude (1.5 mm double amplitude) Shock resistance Destruction: 1,000 m/s2 Malfunction: 500 m/s2 Endurance Mechanical: 1,000,000 operations min. (at 1,800 operations/hr) Electrical: 300,000 operations min. (under rated load at 1,800 operations/hr) Failure rate (reference value (see note 3)) 10 mVDC, 10 µA Ambient temperature Operating: -40°C to 70°C (with no icing) Ambient humidity Operating: 5% to 85% Weight Approx. 5 g Note: The table above shows preliminary values. 1. Measurement Conditions: 5 VDC, 100 mA, voltage drop method 2. Measurement Conditions: Measured at the same points as the dielectric strength using a 500-VDC ohmmeter. 3. This value is for a switching frequency of 120 operations/minute. 253 Signal Relays Operational Coil Omron A5 Catalogue 2006 1-294 14/10/05 9:40 am Page 254 High-Frequency Signal Relay – G6Y Text Engineering Data Ambient Temperature vs. Maximum Coil Voltage Contact Reliability Test (See Note) Malfunctioning Shock Y 1,200 min. 200 Sample: G6Y-1, 12 VDC Quantity: 20 Units Conditions: Resistive load: 10 mVDC 0.01 mA Switching frequency: 120 times/minute Maximum coil voltage (%) 1,000 1,200 min. 180 1,200 min. 800 X Z' 600 400 160 N.O. contact N.C. contact 200 (150) 200 140 600 Z 120 1,200 min. X' 800 1,200 min. 1,000 N.O. contact N.C. contact 1,200 min. Y' 100 0 Contact resistance 400 (130) 10 20 30 40 50 60 70 80 Units: m/s Y 90 100 X Z Z' Y' Ambient temperature (°C) 2 X' Number of operations (×10 4 ) Shock direction Note: Ambient temperature of 23°C Quantity Tested: 10 Units Note: The maximum coil voltage refers to Test Method: Shock was applied 3 times in each direction with and with the maximum value in a varying out excitation and the level at range of operating power voltage, which the shock caused mal not a continuous voltage. function was measured. Rating: 500 m/s 2 50-Ω Terminator HP8753D Network Analyzer G6Y-1 Terminals which were not being measured were terminated with 50 Ω. 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. 50 60 70 0 0.1 0.2 0.3 0.4 0 2.2 10 2 20 1.8 30 0.5 1.6 Return loss 0.6 40 1.4 0.7 80 0.8 50 90 1.2 V.SWR 0.9 100 0 500 1,000 1,500 2,000 2,500 Frequency (MHz) 254 1 0 500 1,000 1,500 2,000 2,500 Frequency (MHz) 60 0 500 1,000 1,500 2,000 2,500 Frequency (MHz) 1 V.SWR 40 Return loss (dB) Insertion loss (dB) Isolation (dB) 30 V.SWR, Return Loss Characteristics (Average Values) (See notes 1 and 2.) Insertion Loss Characteristics (Average Values) (See notes 1 and 2.) Isolation Characteristics (Average Values) (See notes 1 and 2.) Omron A5 Catalogue 2006 1-294 14/10/05 9:40 am Page 255 50 Bounce Time Distribution (See Note) Operating time Sample: G6Y-1 Quantity: 50 Units Release time 40 50 Release bounce time 40 30 30 20 20 10 10 0 Operating bounce time Subject: G6Y-1 Quantity: 50 Units Signal Relays Operating/Release Time Distribution (See Note) Quantity Quantity Text High-Frequency Signal Relay – G6Y Note: Ambient temperature: 23°C 1 2 3 4 5 6 7 8 0 1 2 3 4 5 Time (ms) 6 7 8 Time (ms) Dimensions Note: All units are in millimeters unless otherwise indicated. G6Y-1 PCB Dimensions (Bottom View) Tolerances: ±0.1 mm. Terminal Arrangement/ Internal Connections (Bottom View) Six, 1.2-dia. holes 20.7 max. (20.5)* Three, 0.8-dia. holes 11.7 max. (11.5)* (1.83) 9.2 max. (9.0)* 3 7.62 15.24 (2.05) * Average value (2.05) (2.63) (2.63) (Holes for the coil terminals may also be 1.0.) (There is no polarity to the coil.) Note: The shaded and unshaded parts indicate the product's directional marks. 255 Omron A5 Catalogue 2006 1-294 14/10/05 9:40 am Page 256 High-Frequency Signal Relay – G6Y Text ■ Correct Use Airtightness when cleaning will last 1 minute at 70˚C. Complete cleaning within these conditions. MICRO STRIP LINE DESIGN • It is advantageous to use the Micro Strip Line in high–frequency transmission circuits because a low-loss transmission can be constructed 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 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. ZO = r W H 1+ 2H πW 1+In πW H • The following graph shows this relationship. Micro Strip impedance ( Ω) Elbow Clip the corners. W: Line width : Effective dielectric constant H: Dielectric base thickness The copper foil thickness must be less than H. Dielectric constant (εr) Micro Strip (w/h) 256 BENDING THE MICRO STRIP LINE Strip Line with impedance Z 377 ε • 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. Furthermore, 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. • 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. 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. Omron A5 Catalogue 2006 1-294 14/10/05 9:40 am Page 257 EXAMPLES OF MOUNTING DESIGNS 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. 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 ( = 4.8). The width of the Strip Lines for a board with t=1.6 mm is 2.7 mm for 50 Ω and 1.3 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 set aside approximately 2.0 mm ∞ 2.0 mm of the pattern for the contact terminals and coil terminals. Strip Line 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 and 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. 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. Therefore, the ground terminal and stand-off part are electrically connected internally. 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. 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 G6Y Coil Part A Using a Single-sided Board 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. Metal plate Cross-section of Part A Stand-off part Through hole Ground terminal Ground pattern Contact terminal Ground terminal Ground terminals G6Y Metal plate Printed circuit board Pattern 257 Signal Relays Text High-Frequency Signal Relay – G6Y