RD (ARD) RD COAXIAL SWITCHES (ARD) 13GHz, 18GHz, 26.5GHz COAXIAL SWITCH FEATURES TYPICAL APPLICATIONS 1. High frequency characteristics (Impedance 50) Wireless and mobile communication * Cellular phone base stations * Amplifier switching Digital broadcasting * Broadcasting relay station * Broadcasting equipment Measurement instruments * All types of inspection equipment Frequency (GHz) V.S.W.R. (max.) Insertion loss (dB. max.) Isolation (dB. min.) to 1 1 to 4 4 to 8 1.1 1.15 1.25 1.35 0.2 85 80 8 to 12.4 12.4 18 to to 18 26.5* 1.5 1.7 0.3 0.4 0.5 0.8 70 65 60 55 * 18 to 26.5GHz characteristics can be applied 26.5GHz type only (SPDT, Transfer) NEW RoHS Directive compatibility information http://www.nais-e.com/ 2. SPDT, Transfer and SP6T type is available 3. High sensitivity Nominal operating power: 840 mW (SPDT/SP6T, Failsafe type) 1,540 mW (Transfer, Failsafe type) 4. Long life: 5 x 106 5. With termination type is available (SP6T) 6. + COM type is available SPECIFICATIONS Contact Arrangement Contact material Initial contact resistance (By voltage drop 6V DC 1A) Rating Contact input power*1 Indicator rating Contact rating Initial contact resistance (Measured by 5V 100mA) High frequency characteristics (Impedance 50) Expected life (min. operation) V.S.W.R. (max.) Insertion loss (dB, max.) Isolation (dB, min.) Mechanical (at 180 cpm) Electrical (at 20 cpm) SPDT Transfer Gold Max. 100m 120W 3GHz (V.S.W.R. 1.15 or less, no contact switching, ambient temperature 40C [SPDT], 25C [Transfer], 25C [SP6T])#1 Max. 30V 100mA Max. 1 to 1GHz 1.1 1 to 4 1.15 4 to 8 1.25 0.3 70 0.2 85 80 Contact input power*1 Indicator rating Contact rating Initial contact resistance (Measured by 5V 100mA) High frequency characteristics (Impedance 50) Expected life (min. operation) V.S.W.R. (max.) Insertion loss (dB, max.) Isolation (dB, min.) Mechanical (at 180 cpm) Electrical (at 20 cpm) 12.4 to 18 1.5 0.5 60 18 to 26.5#2 1.7 0.8 55 5 x 106 5 x 106 (5W, to 3GHz, impedance 50, V.S.W.R.; max. 1.2) Arrangement Contact material Initial contact resistance (By voltage drop 6V DC 1A) Rating 8 to 12.4 1.35 0.4 65 SP6T Gold Max. 100m 120W 3GHz (V.S.W.R. 1.15 or less, no contact switching, ambient temperature 40C [SPDT], 25C [Transfer], 25C [SP6T])#1 Max. 30V 100mA Max. 1 to 1GHz 1.1 1 to 4 1.15 0.2 85 80 4 to 8 1.25 0.3 70 8 to 13 1.35 0.4 65 5 x 106 5 x 106 (5W, to 3GHz, impedance 50, V.S.W.R.; max. 1.2) #1 Factors such as heating of the connected connector influence the high frequency characteristics; therefore, please verify under actual conditions of use. #2 18 to 26.5 GHz characteristics apply to the 26.5 GHz type only. All Rights Reserved (c) COPYRIGHT Matsushita Electric Works, Ltd. RD (ARD) Characteristics SPDT Transfer Min. 1,000 M (at 500 V DC) 500 Vrms for 1 min. 500 Vrms for 1 min. 500 Vrms for 1 min. 500 Vrms for 1 min. Initial insulation resistance*2 Between open contacts Between contact and coil Initial breakdown voltage*3 Between contact and earth terminal Between coil and earth terminal Operate time*4 (at 20C) Functional*5 Shock resistance Destructive*6 Functional*7 Vibration resistance Destructive Ambient temp Conditions for operation, transport and storage*8 (Not freezing and condensing at low temperature) Humidity Unit weight (Approx.) Max. 20ms Min. 500 m/s2 Min. 1,000 m/s2 10 to 55 Hz at double amplitude of 3mm 10 to 55 Hz at double amplitude of 5mm -55C to +85C -67F to +185F 5 to 85% R.H. 50g 1.76oz 110g 3.88oz Initial insulation resistance*2 Between open contacts Between contact and coil Initial breakdown voltage*3 Between contact and earth terminal Between coil and earth terminal Operate time*4 (at 20C) Functional*5 Shock resistance Destructive*6 Functional*7 Vibration resistance Destructive Ambient temp Conditions for operation, transport and storage*8 (Not freezing and condensing at low temperature) Humidity Unit weight (Approx.) SP6T Min. 1,000 M (at 500 V DC) 500 Vrms for 1 min. 500 Vrms for 1 min. 500 Vrms for 1 min. 500 Vrms for 1 min. Max. 20ms Min. 500 m/s2 Min. 1,000 m/s2 10 to 55 Hz at double amplitude of 3mm 10 to 55 Hz at double amplitude of 5mm -55C to +85C -67F to +185F 5 to 85% R.H. 320g 11.29oz Max. 15ms Remarks *1 Please verify the usability of input power under actual conditions because heat generated from connectors can influence connection. *2 Measurement at same location as "Initial breakdown voltage" section. *3 Detection current: 10mA *4 Nominal operating voltage applied to the coil, excluding contact bounce time. *5 Half-wave pulse of sine wave: 11ms, detection time: 10ms. *6 Half-wave pulse of sine wave: 11ms *7 Detection time: 10ms *8 Refer to 4. Conditions for operation, transport and storage conditions in NOTES (Page 42). ORDERING INFORMATION Ex. Product name RD Frequency A RD Operating function 1: to 18GHz (SPDT) 00: Failsafe 2: to 18GHz (Transfer) 20: Latching 3: to 13GHz (SP6T) 51: Latching with TTL driver 5: to 26.5GHz (SPDT) (with self cut-off function) 6: to 26.5GHz (Transfer) (SPDT, Transfer) Nominal operating voltage, V DC 4H: 4.5 (Failsafe, Latching type only) 05: 5 (Latching with TTL driver type only) 12: 12 24: 24 Operation terminal HF data attached Nil: Solder terminal C: Connector cable (SPDT type only) Nil: No HF test data attached Q: HF test data attached Note: Sealed types are also available. (SPDT type only) All Rights Reserved (c) COPYRIGHT Matsushita Electric Works, Ltd. RD (ARD) TYPES 1. SPDT 1) Solder terminal Operating function Failsafe Latching Latching with TTL driver (with self cut-off function) Nominal operating voltage, V DC 4.5 12 24 4.5 12 24 5 12 24 18GHz type No HF datasheet HF datasheet attached attached ARD1004H ARD1004HQ ARD10012 ARD10012Q ARD10024 ARD10024Q ARD1204H ARD1204HQ ARD12012 ARD12012Q ARD12024 ARD12024Q ARD15105 ARD15105Q ARD15112 ARD15112Q ARD15124 ARD15124Q 26.5GHz type No HF datasheet HF datasheet attached attached ARD5004H ARD5004HQ ARD50012 ARD50012Q ARD50024 ARD50024Q ARD5204H ARD5204HQ ARD52012 ARD52012Q ARD52024 ARD52024Q ARD55105 ARD55105Q ARD55112 ARD55112Q ARD55124 ARD55124Q 18GHz type No HF datasheet HF datasheet attached attached ARD1004HC ARD1004HCQ ARD10012C ARD10012CQ ARD10024C ARD10024CQ ARD1204HC ARD1204HCQ ARD12012C ARD12012CQ ARD12024C ARD12024CQ ARD15105C ARD15105CQ ARD15112C ARD15112CQ ARD15124C ARD15124CQ 26.5GHz type No HF datasheet HF datasheet attached attached ARD5004HC ARD5004HCQ ARD50012C ARD50012CQ ARD50024C ARD50024CQ ARD5204HC ARD5204HCQ ARD52012C ARD52012CQ ARD52024C ARD52024CQ ARD55105C ARD55105CQ ARD55112C ARD55112CQ ARD55124C ARD55124CQ 18GHz type No HF datasheet HF datasheet attached attached ARD2004H ARD2004HQ ARD20012 ARD20012Q ARD20024 ARD20024Q ARD2204H ARD2204HQ ARD22012 ARD22012Q ARD22024 ARD22024Q ARD25105 ARD25105Q ARD25112 ARD25112Q ARD25124 ARD25124Q 26.5GHz type No HF datasheet HF datasheet attached attached ARD6004H ARD6004HQ ARD60012 ARD60012Q ARD60024 ARD60024Q ARD6204H ARD6204HQ ARD62012 ARD62012Q ARD62024 ARD62024Q ARD65105 ARD65105Q ARD65112 ARD65112Q ARD65124 ARD65124Q Note: Standard packing; Carton: 1 pc. Case: 20 pcs. 2) Connector cable Operating function Failsafe Latching Latching with TTL driver (with self cut-off function) Nominal operating voltage, V DC 4.5 12 24 4.5 12 24 5 12 24 Note: Standard packing; Carton: 1 pc. Case: 10 pcs. 2. Transfer 1) Solder terminal Operating function Failsafe Latching Latching with TTL driver (with self cut-off function) Nominal operating voltage, V DC 4.5 12 24 4.5 12 24 5 12 24 Note: Standard packing; Carton: 1 pc. Case: 10 pcs. 3. SP6T Operating function Failsafe Latching Nominal operating voltage, V DC 4.5 12 24 4.5 12 24 13GHz type No HF datasheet attached ARD3004H ARD30012 ARD30024 ARD3204H ARD32012 ARD32024 HF datasheet attached ARD3004HQ ARD30012Q ARD30024Q ARD3204HQ ARD32012Q ARD32024Q Note: Standard packing; Carton: 1 pc. Case: 5 pcs. All Rights Reserved (c) COPYRIGHT Matsushita Electric Works, Ltd. RD (ARD) COIL DATA (at 20C 68F) 1. SPDT 1) Failsafe type Nominal operating voltage, V DC 4.5 12 24 Nominal operating current, mA (+10%/-15%) 186.7 70.0 40.4 Nominal power consumption, mW 840 840 970 2) Latching type Nominal operating voltage, V DC 4.5 12 24 Nominal operating current, mA (+10%/-15%) 155.6 62.5 37.5 Nominal power consumption, mW 700 750 900 3) Latching with TTL driver type (with self cut-off function) Nominal operating voltage, V DC 5 12 24 TTL logic level (see TTL logic level range) ON OFF 2.4 to 5.5V 0 to 0.5V Switching frequency Max. 180 cpm (ON time : OFF time = 1 : 1) 2. Transfer 1) Failsafe type Nominal operating voltage, V DC 4.5 12 24 Nominal operating current, mA (+10%/-15%) 342.2 128.3 69.6 Nominal power consumption, mW 1540 1540 1670 2) Latching type Nominal operating voltage, V DC 4.5 12 24 Nominal operating current, mA (+10%/-15%) 266.7 104.2 58.3 Nominal power consumption, mW 1200 1250 1400 3) Latching with TTL driver type (with self cut-off function) Nominal operating voltage, V DC 5 12 24 TTL logic level (see TTL logic level range) ON OFF 2.4 to 5.5V 0 to 0.5V Switching frequency Max. 180 cpm (ON time : OFF time = 1 : 1) 3. SP6T 1) Failsafe type Nominal operating voltage, V DC 4.5 12 24 Nominal operating current, mA (+10%/-15%) 186.7 70.0 40.4 Nominal power consumption, mW 840 840 970 2) Latching type Nominal operating voltage, V DC 4.5 12 24 Nominal operating current, mA (+10%/-15%) SET: 155.6 / RESET (ALL): 933.6 SET: 62.5 / RESET (ALL): 375.0 SET: 37.5 / RESET (ALL): 225.0 Nominal power consumption, mW SET: 700 / RESET (ALL): 4,200 SET: 750 / RESET (ALL): 4,500 SET: 900 / RESET (ALL): 5,400 All Rights Reserved (c) COPYRIGHT Matsushita Electric Works, Ltd. RD (ARD) * Operating voltage range 1) Failsafe type 2) Latching type 3) Latching with TTL driver type (with self cut-off function) 4.5 12 24 V V V 6 16 32 4.5 12 24 V V V 6 16 32 5 12 24 V V V 6.67 16 32 5.25 14 28 5.25 14 28 5.83 14 28 4.5 12 24 4.5 12 24 5 12 24 3.75 10 20 3.75 10 20 Nominal voltage 3 2.25 6 12 1.5 4 8 0.75 2 4 0 0 0 -55-40 -20 Allowable range for use Recommended operation voltage range Recommended release voltage range 20 40 60 Nominal voltage 3 8 16 2.25 6 12 1.5 4 8 Allowable range for use 1.67 4 8 Allowable range for use 0.75 2 4 Recommended set/reset voltage range 0.83 2 4 Recommended set/reset voltage range 0 0 0 -55-40 -20 0 0 4.17 10 20 Nominal voltage 8 16 85 Ambient temperature C 0 0 -55-40 -20 0 20 40 60 Ambient temperature C 85 3.33 8 16 2.5 6 12 4) TTL Logic level range 5.5 5 4 3 2.4 2 1 ON OFF 0.5 0 -55-40 -20 0 20 40 60 Ambient temperature C 85 Note) Please consult us for use that is outside this range. All Rights Reserved (c) COPYRIGHT Matsushita Electric Works, Ltd. 0 20 40 60 Ambient temperature C 85 RD (ARD) DIMENSIONS mm inch 1. SPDT 1) Solder terminal 3.5 .138 3.5 .138 2.0 .079 4.3 .169 11.2 .441 3.5 .138 7.0 .276 0.3 .012 Solder terminal NC COM NO Indicator Coil GND + 39.0 1.535 Serial No. 4.5 .177 2-3.1 dia. 2-.122 dia. 2-2.4 dia. 2-.094 dia. 7.2 .283 7.3 .287 2.1 .083 11.2 .441 22.4 .882 30.0 1.181 34.0 1.339 3-SMA connector 13.2 .520 Tolerance: 0.3 .012 Failsafe Latching 1 COM 2 NC COM NO Latching with TTL driver (with self cut-off function) 1 COM 2 Indicator terminal Coil terminal GND V GND GND Logic 1 Logic 2 Coil 1 Coil 2 NC COM NO Indicator GND + Serial No. Coil 1 COM 2 GND 1 2 Indicator 1 COM 2 Coil V GND 1 Serial No. + COM type is available All Rights Reserved (c) COPYRIGHT Matsushita Electric Works, Ltd. Serial No. Indicator 2 Coil RD (ARD) 2) Connector cable mm inch Pin No. Fail safe Latching Latching with TTL driver 1 - - 2 NC 1 - 1 Indicator 3 4 COM NO COM 2 COM 2 5 - - 6 - - - V Coil 7 8 GND + GND 1 Logic GND 1 9 - 2 Logic 2 D-sub connector pin contact type 2345 Pin No. 1 6789 12.55 .494 3.05 dia. .120 dia. 25.0 .984 30.8 1.213 5.95 .234 1.2 .047 PVC wires 110.010 4.331.394 NC COM NO GND + 39.0 1.535 Serial No. 4.5 .177 Indicator Coil 2-3.1 dia. 2-.122 dia. 2-2.4 dia. 2-.094 dia. 7.2 .283 7.3 .287 2.1 .083 11.2 .441 22.4 .882 30.0 1.181 34.0 1.339 3-SMA connector Failsafe Latching NC COM NO 13.2 .520 Tolerance: 0.3 .012 Latching with TTL driver (with self cut-off function) 1 1 COM 2 Indicator terminal Indicator terminal Coil terminal Coil terminal COM 2 Indicator terminal Coil terminal GND V GND Logic 1 Logic 2 GND Coil 1 Coil 2 + COM type is available All Rights Reserved (c) COPYRIGHT Matsushita Electric Works, Ltd. RD (ARD) 2. Transfer mm inch 45.70 1.799 15.24 .600 Max. 5.0 .197 0.30 .012 5.08 .200 5.08 .200 Solder terminal 5.08 .200 2.00 .079 3-3.80 dia. 3-.150 dia. Coil GND + 20.3 .799 Indicator NC COM NO 10.15 .400 9.65 39.0 .380 1.535 Serial No. J1 J3 9.65 .380 J2 J4 7.2 .283 4-SMA connector 32.0 1.260 16.2 .638 J1 J2 32.0 1.260 16.2 .638 J3 J4 1 to 1.5 .039 to .059 Tolerance: 0.3 .012 55.5 2.185 J1 J2 J3 J4 Fail safe Latching Latching with TTL driver Failsafe Coil terminal GND Latching Indicator terminal NC COM NO Coil terminal GND 1 2 NC: J1-J2, J3-J4 NO: J1-J3, J2-J4 POS1: J1-J2, J3-J4 POS2: J1-J3, J2-J4 POS1: J1-J2, J3-J4 POS2: J1-J3, J2-J4 Latching with TTL driver (with self cut-off function) Indicator terminal 1 COM 2 Coil terminal V GND Logic 1 Logic 2 + COM type is available All Rights Reserved (c) COPYRIGHT Matsushita Electric Works, Ltd. Indicator terminal 1 COM 2 RD (ARD) 3. SP6T mm inch 80.0 3.150 66.0 2.598 7-5.08 7-.200 a. di a. 5 di 4. 77 4 -.1 4 25.4 66.0 80.0 1.000 2.598 3.150 Max. 4.5 Max. .177 78.0 dia. 3.071 dia. 3.0 .118 J3 J2 Serial No. MADE IN JAPAN COM1 2 3 4 5 6 Ind Coil GND1 2 3 4 5 6 39.5 1.555 J4 J1 COM J6 J5 (Bottm view) 7.2 .283 56 J2 J3 7-SMA jack connector .0 2.2 dia. 05 dia . J1 J4 COM J6 Failsafe type Coil terminal GND 1 Indicator terminal COM 1 Latching type 2 6 2 Coil terminal GND 1 Indicator terminal COM 1 2 6 2 *R 6 6 COM J1 COM J1 J5 J2 J2 J6 J6 *RESET (ALL) J2 Serial No. COM 1 2 3 4 5 6 Ind MADE IN JAPAN J2 J3 J4 J1 Serial No. GND 1 2 3 4 5 6 J6 J5 (Bottm view) COM 1 2 3 4 5 6 Ind COM Coil MADE IN JAPAN J3 J4 J1 COM Coil GND 1 2 3 4 5 6 R J6 J5 (Bottm view) 1. With termination type is available. 2. + COM type is available. All Rights Reserved (c) COPYRIGHT Matsushita Electric Works, Ltd. RD (ARD) REFERENCE DATA 1-(1). High frequency characteristics (SPDT) Sample: ARD10012 Measuring method: Measured with HP network analyzer (HP8510). * Insertion loss * Isolation 1.9 0 0 1.8 0.1 10 1.7 0.2 20 0.3 30 Maximum 1.5 1.4 Typical 1.3 Typical Isolation, dB 1.6 Insertion loss, dB V.S.W.R. * V.S.W.R. 0.4 0.5 Maximum 0.6 40 60 1.2 0.7 70 1.1 0.8 80 1.0 0.9 90 1.0 100 1GHz 4GHz 8GHz 12.4GHz 18GHz Frequency 26.5GHz Minimum 50 1GHz 4GHz 8GHz 12.4GHz 18GHz Frequency 26.5GHz Typical 1GHz 4GHz 8GHz 12.4GHz 18GHz Frequency 26.5GHz 1-(2). High frequency characteristics (Transfer) Sample: ARD60012 Measuring method: Measured with HP network analyzer (HP8510). * V.S.W.R. * Insertion loss 0 0 1.8 0.1 10 1.6 Maximum 1.5 1.4 1.3 Typical 0.2 20 0.3 30 0.4 0.5 Maximum 0.6 Typical Isolation, dB Insertion loss, dB 1.9 1.7 V.S.W.R. * Isolation 40 Minimum 50 60 1.2 0.7 70 1.1 0.8 80 1.0 0.9 1GHz 4GHz 8GHz 12.4GHz 18GHz Frequency 1.0 26.5GHz Typical 90 1GHz 4GHz 8GHz 12.4GHz 18GHz Frequency 100 26.5GHz 1GHz 4GHz 8GHz 12.4GHz 18GHz Frequency 26.5GHz 1-(3). High frequency characteristics (SP6T) Measuring method: Measured with HP network analyzer (HP8510). * V.S.W.R. * Insertion loss 0 0 1.9 0.1 10 1.7 1.6 1.5 Maximum 1.4 20 0.3 30 0.4 0.5 Maximum 0.6 1.3 Typical 1.2 Typical 0.2 Isolation, dB Insertion loss, dB 2.0 1.8 V.S.W.R. * Isolation 40 50 0.7 70 0.8 80 1.1 0.9 90 1.0 1.0 100 1GHz 4GHz 8GHz 13GHz Frequency 18GHz 1GHz 4GHz 8GHz 13GHz Frequency 18GHz All Rights Reserved (c) COPYRIGHT Matsushita Electric Works, Ltd. Minimum 60 Typical 1GHz 4GHz 8GHz 13GHz Frequency 18GHz RD (ARD) NOTES 3) Freezing Condensation or other moisture may freeze on the relay when the temperature is lower than 0C 32F. This causes problems such as sticking of movable parts or operational time lags. 4) Low temperature, low humidity environments. The plastic becomes brittle if the relay is exposed to a low temperature, low humidity environment for long periods of time. 5) Low-temperature and low-humidity atmosphere. When exposed to low temperature and low humidity for a long time, the relay's plastic casing may become breakable. 5. Other handling precautions. 1) The relay's on/off service life is based on standard test conditions (temperature: 15 to 35C 59 to 95F, humidity: 25 to 75%) specified in JIS C5442-1996. Life will depend on many factors of your system: coil drive circuit, type of load, switching intervals, switching phase, ambient conditions, to name a few. 2) Use the relay within specifications such as coil rating, contact rating and on/ off service life. If used beyond limits, the relay may overheat, generate smoke or catch fire. 3) Be careful not to drop the relay. If accidentally dropped, carefully check its appearance and characteristics before use. 4) Be careful to wire the relay correctly. Otherwise, malfunction, overheat, fire or other trouble may occur. 5) The latching type relay is shipped in the reset position. But jolts during transport or impacts during installation can move it to the set position. It is, therefore, advisable to build a circuit in which the relay can be initialized (set and reset) just after turning on the power. 6) If a relay stays on in a circuit for many months or years at a time without being activated, circuit design should be reviewed so that the relay can remain non-excited. A coil that receives current all the time heats, which degrades insulation earlier than expected. A latching type relay is recommended for such circuits. 7) For SMA connectors, we recommend a torque of 0.900.1 N*m for installation, which falls within the prescribed torque of MIL-C-39012. Please be aware that conditions might be different depending on the connector materials and how it interacts with surrounding materials. 8) Please do not use silicon based substances such as silicon rubber, silicon oil, silicon coatings and silicon fillings, in the vicinity of the relay. Doing so may cause volatile silicon gas to form which may lead to contact failure due to the adherence of silicon on the contacts when they open and close in this atmosphere. 9) Please note that when switching contacts (latching type only), you must apply reset (ALL) voltage and release all contacts first. (SP6T type) 10) Do not use multiple contacts simultaneously. (SP6T type) ; ; ;;;; ;;;; 1. Coil operating power Pure DC current should be applied to the coil. The wave form should be rectangular. If it includes ripple, the ripple factor should be less than 5%. However, check it with the actual circuit since the characteristics may be slightly different. The nominal operating voltage should be applied to the coil for more than 50 ms to set/reset the latching type relay. Please use the latching type for circuits that are continually powered for long periods of time. 2. Coil connection When connecting coils, refer to the wiring diagram to prevent mis-operation or malfunction. 3. Connection of coil indicator and washing conditions 1) The connection of coil indicator terminal shall be done by soldering. Soldering conditions Max. 260C 500F (solder temp) within 10sec (soldering time) Max. 350C 662F (solder temp) within 3sec (soldering time) 2) This product is not sealed type, therefore washing is not allowed. 4. Conditions for operation, transport and storage conditions 1) Ambient temperature, humidity, and atmospheric pressure during usage, transport, and storage of the relay: (1) Temperature: -55 to +85C -67 to +185F (2) Humidity: 5 to 85% RH (Avoid freezing and condensation.) The humidity range varies with the temperature. Use within the range indicated in the graph below. (3) Atmospheric pressure: 86 to 106 kPa Temperature and humidity range for usage, transport, and storage: Humidity, %RH 85 Tolerance range (Avoid freezing when (Avoid used at temperatures condensation when lower than 0C 32F) used at temperatures higher than 0C 32F) 5 -55 -67 0 +32 Temperature, C F +85 +185 2) Condensation Condensation forms when there is a sudden change in temperature under high temperature and high humidity conditions. Condensation will cause deterioration of the relay insulation. All Rights Reserved (c) COPYRIGHT Matsushita Electric Works, Ltd.