1 Form A Solid State Relay

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1 FEATURES i1791- DESCRIPTION i The LH1 relay are SPST normally open switches (1 form A) that can replace electromechanical relays in many applications. The relay requires a minimal amount of LED drive current to operate, making it ideal for battery powered and power consumption sensitive applications. The relay is constructed using a GaAIAs LED for actuation control and an integrated monolithic die for the switch output. The die, fabricated in a high-voltage dielectrically isolated technology, comprised of a photodiode array, switch-control circuitry, and MOSFET switches. In addition, the relay employs current-limiting circuitry, enabling it to pass FCC 8.3 and other regulatory surge requirements when overvoltage protection is provided. The relay can be configured for AC/DC or DC-only operation. S S 1 DC S' 3 S' Extremely low operating current High speed operation Isolation test voltage 3 V RMS Current limit protection High surge capability DC only option Clean bounce free switching Low power consumption Surface mountable Compliant to RoHS directive /9/EC and in accordance to WEEE /9/EC APPLICATIONS General telecom switching Battery powered switch applications Industrial controls Programmable controllers Instrumentation Note See "solid state relays" (application note ) AGENCY APPROVALS UL177: file no. E7 system code H, double protection CSA: certification no BSI: certification no. 7979/798 FIMKO: 19 ORDERING INFORMATION L H 1 # # # # # T R DIP SMD PART NUMBER ELECTR. VARIATION PACKAGE CONFIG. TAPE AND REEL 7. mm >.1 mm PACKAGE SMD-, tubes SMD-, tape and reel DIP-, tubes UL, cul, BSI, FIMKO LH1AAB LH1AABTR LH1AT Document Number: 8383 For technical questions, contact: optocoupleranswers@vishay.com Rev. 1.7, -May-1 1

2 ABSOLUTE MAXIMUM RATINGS (T amb = C, unless otherwise specified) PARAMETER TEST CONDITION SYMBOL VALUE UNIT SSR LED input ratings: continuous forward current I F ma LED input ratings: reverse voltage V R 8 V Output operation (each channel): DC or peak AC load voltage I L μa V L V Continuous DC load current, bidirectional operation pin to I L 1 ma Continuous DC load current, unidirectional operation pins, (+) to pin (-) I L ma Ambient operating temperature range T amb - to + 8 C Storage temperature range T stg - to + 1 C Pin soldering temperature (1) t = 1 s max. T sld C Input to output isolation test voltage t = 1 s V ISO 3 V RMS Power dissipation P diss mw Notes Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. Functional operation of the device is not implied at these or any other conditions in excess of those given in the operational sections of this document. Exposure to absolute maximum ratings for extended periods of the time can adversely affect reliability. (1) Refer to reflow profile for soldering conditions for surface mounted devices (SMD). Refer to wave profile for soldering conditions for through hole devices (DIP). ELECTRICAL CHARACTERISTICS (T amb = C, unless otherwise specified) PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT INPUT LED forward current, switch turn-on I L = 1 ma, t = 1 ms I Fon.33. ma LED forward current, switch turn-off V L = ± 3 V, t = 1 ms I Foff.1.3 ma LED forward voltage I F = 1. ma V F V OUTPUT On-resistance, AC/DC, each pole I F = 1. ma, I L = ± ma R ON 17 3 Ω On-resistance, DC: pin, (+) to (-) I F = 1. ma, I L = 1 ma R ON Ω Off-resistance I F = ma, V L = ± 1 V R OFF GΩ Current limit AC (1) : pin (±) to (±) I F = 1. ma, t = ms, V L = 7 V I LMT ma Off-state leakage current I F = ma, V L = ± 1 V I O.7 na I F = ma, V L = ± V I O.9 1 μa Output capacitance I F = ma, V L = 1 V C O pf I F = ma, V L = V C O. pf Switch offset I F = ma V OS. μv TRANSFER Capacitance (input to output) V ISO = 1 V C IO.7 pf Turn-on time Turn-off time I F = 1. ma, I L = ma t on 1. ms I F = ma, I L = ma t on. 1 ms I F = 1. ma, I L = ma t off. ms I F = ma, I L = ma t off ms Notes Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the result of engineering evaluations. Typical values are for information only and are not part of the testing requirements. (1) No DC mode current limit available. For technical questions, contact: optocoupleranswers@vishay.com Document Number: 8383 Rev. 1.7, -May-1

3 SAFETY AND INSULATION RATINGS PARAMETER TEST CONDITION SYMBOL VALUE UNIT Climatic classification IEC 8 part 1 /8/1 Pollution degree DIN VDE 19 Tracking resistance (comparative tracking index) Insulation group llla CTI 17 Highest allowable overvoltage Transient overvoltage V IOTM 8 V peak Max. working insulation voltage Recurring peak voltage V IORM 89 V peak Insulation resistance at C R IS 1 1 Ω Insulation resistance at T S V IO = V R IS 1 9 Ω Insulation resistance at 1 C R IS 1 11 Ω Partial discharge test voltage Methode a, V pd = V IORM x 1.87 V pd 19 V peak Safety limiting values - Case temperature T SI 17 C maximum values allowed Input current I SI 3 ma in the event of a failure Output power P SO 7 mw Minimum external air gap (clearance) Minimum external tracking (creepage) Measured from input terminals to output terminals, shortest distance through air Measured from input terminals to output terminals, shortest distance path along body 7 7 mm mm TYPICAL CHARACTERISTICS (T amb = C, unless otherwise specified) Load Current (ma) I Fon = 3 ma to 1 ma I Fon = ma I Fon = 1 ma I Fon =. ma I Fon =.3 ma Ambient Temperature ( C) Fig. 1 - Recommended Operating Conditions LED Forward Current (ma) ilh1at_ T = 8 C T = C T = - C LED Forward Voltage (V) Fig. 3 - LED Forward Current vs. Forward Voltage 1. LED Forward Voltage (V) I F = 1 ma 1.1 I F = ma I F = ma 1. I F = 1 ma Ambient Temperature ( C) ilh1at_1 I F = ma I F = ma Fig. - LED Voltage vs. Temperature LED Reverse Current (µa) 1 8 ilh1at_3 8 C C - C 8 LED Reverse Voltage (V) Fig. - LED Reverse Current vs. LED Reverse Voltage Document Number: 8383 For technical questions, contact: optocoupleranswers@vishay.com Rev. 1.7, -May-1 3

4 LED Forward Current for Switch Turn-on (%), Norm. to C I L = 1 ma Ambient Temperature ( C) Fig. - LED Current for Switch Turn-on vs. Temperature Load Current (ma) ilh1at_7 - C C 8 C IF = 1. ma Load Voltage (V) Fig. 8 - Load Current vs. Load Voltage Change in R on (%), Norm. to C I L = ma I L = ma ilh1at_ Temperature ( C) Fig. - On-Resistance vs. Temperature Change in Current Limit (%) Normalized to C I F = ma, t = ms ilh1at_8 Ambient Temperature ( C) Fig. 9 - Current Limit vs. Temperature LED Dropout Voltage (V) Temperature ( C) ilh1at_ I L = 1 ma Fig. 7 - LED Dropout Voltage vs. Temperature AC/DC On-resistance Variation (%) Normalized to Data Sheet R ON Specification at I F = ma ilh1at_9 LED Forward Current (ma) Fig. 1 - Variation in On-resistance vs. LED Current For technical questions, contact: optocoupleranswers@vishay.com Document Number: 8383 Rev. 1.7, -May-1

5 . Capacitance (pf) 3 1 I F = ma Insertion Loss (db) R L = Ω I L = ma ilh1at_1 Applied Voltage (V) Fig Switch Capacitance vs. Applied Voltage ilh1at_13 Frequency (Hz) Fig. 1 - Insertion Loss vs. Frequency 1 1 Isolation (db) 8 R L = Ω V P = 1 V Load Current (µa) 3 1 I F = ma I L = < µa 8 C C - C ilh1at_11 Frequency (Hz) Fig. 1 - Output Isolation ilh1at_1 1 3 Switch Breakdown Voltage (V) Fig. 1 - Switch Breakdown Voltage vs. Load Current Leakage Current (ma) ilh1at_1 8 C 7 C C C 1 3 Load Voltage (V) Fig Leakage Current vs. Applied Voltage at Elevated Temperatures Change in Breakdown Voltage (%) Normalized to C ilh1at_1 Ambient Temperature ( C) Fig. 1 - Switch Breakdown Voltage vs. Temperature Document Number: 8383 For technical questions, contact: optocoupleranswers@vishay.com Rev. 1.7, -May-1

6 Switch Offset Voltage (µv) 3 1 I L = ma ilh1at_1 Ambient Temperature ( C) Fig Switch Offset Voltage vs. Temperature Change in T on (%), Norm. to C ilh1at_19 Temperature ( C) I F = ma I L = ma Fig. - Turn-off Time vs. Temperature Switch Offset Voltage (µv) ilh1at_17 LED Forward Current (ma) Fig LED Offset Voltage vs. LED Current Change in T off (%), Norm. to C I F = ma I L = ma ilh1at_ Temperature ( C) Fig. 1 - Turn-on Time vs. LED Temperature Turn-on Time (ms) C C - C I L = ma ilh1at_18 LED Forward Current (ma) Fig Turn-on Time vs. LED Current Turn-off Time (ms) T = - C T = C T = 8 C.3 I L = ma ilh1at_1 LED Forward Current (ma) Fig. - Turn-off Time vs. LED Current For technical questions, contact: optocoupleranswers@vishay.com Document Number: 8383 Rev. 1.7, -May-1

7 APPLICATIONS INPUT CONTROL The LH1 low turn-on current SSR has highly sensitive photodetection circuits that will detect even the most minute currents flowing through the LED. Leakage current must be considered when designing a circuit to turn on and off these relays. Figure 3 shows a typical logic circuit for providing LED drive current. R 1 is the input resistor that limits the amount of current flowing through the LED. For V operation, a 7 Ω resistor will limit the drive current to about 1. ma. Where high-speed actuation is desirable, use a lower value resistor for R 1. An additional RC peaking circuit is not required with the LH1 relay. R is an optional pull-up resistor which pulls the logic level high output (V OH ) up toward the VS potential. The pull-up resistance is set at a high value to minimize the overall current drawn from the VS. The primary purpose of this resistor is to keep the differential voltage across the LED below its turn-on threshold. LED dropout voltage is graphed vs. temperature in the typical performance characteristics section. When the logic gate is high, leakage current will flow through R. R will draw up to 8 ma before developing a voltage potential which may possibly turn on the LED. Each application should be evaluated, over the full operating temperature range to make sure that leakage current through the input control LED is kept to a value less than the minimum LED forward current for switch turn-off specification. ilh1at_ Any TTL or buffered CMOS logic R 1 kω Fig. 3 - Input Control Circuit V S R 1 7 Ω SSR PACKAGE DIMENSIONS in millimeters DIP Pin one ID ISO method A min. 7. typ i1781 typ.... typ..1 min typ Document Number: 8383 For technical questions, contact: optocoupleranswers@vishay.com Rev. 1.7, -May-1 7

8 SMD Pin one ID R min ISO method A.99 min typ typ. 3 to i min..31. PACKAGE MARKING LH1 V YWW H For technical questions, contact: optocoupleranswers@vishay.com Document Number: Rev. 1.7, -May-1

9 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, Vishay ), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91 Revision: 18-Jul-8 1

1 Form A Solid State Relay

1 Form A Solid State Relay LH5AAB, LH5AABTR, LH5AT Form A Solid State Relay FEATURES S S DC 5 S' S' Isolation test voltage 53 V RMS Current limit protection built in High reliability monolithic output die Low power consumption Clean