Features Applications n Maximum Peak Power Dissipation: n High peak power applications (up to rated 6600 watts limits) n Meets ISO7637-2 / ISO16750-2 Surge n High temperature applications (up to rated specification (varies by test condition) limits) n RoHS compliant* n Clamping diode n AEC-Q101 compliant** n Load switching and lighting SM8S-Q Transient Voltage Suppressor Diode Series General Information Bourns offers Transient Voltage Suppressor Diodes for surge and ESD protection applications, in compact chip package DO-218 size format. The Transient Voltage Suppressor series offers a choice of Working Peak Reverse Voltage from 16 V up to 43 V. Typical fast response times are less than 1.0 picosecond from 0 V to Breakdown Voltage. Absolute Maximum Ratings ( T = 25 C Unless Otherwise Noted) A Parameter Symbol Value Unit Maximum Peak Pulse Power Dissipation (10/1000 s) P 6600 W PK Maximum Peak Pulse Power Dissipation (10/10000 s) P 5200 W PK Power Dissipation with Infinite Heatsink (T = 25 C) P 8 W c D Operating Temperature Range T -55 to +175 C J Storage Temperature Range T -55 to +175 C STG Electrical Characteristics ( T = 25 C Unless Otherwise Noted) A Working Maximum Maximum Maximum Breakdown Voltage Peak Reverse Reverse Reverse Unidirectional Device Bidirectional Device V (Volts) Reverse Leakage Voltage Surge BR Voltage V I Current RWM RSM Part No. Part No. Min. Max. I (mA) V (V) I (A) V (V) I (A) T RWM R RSM RSM SM8S16A SM8S16CA 17.80 19.70 5 16.0 10 26.0 254.0 SM8S17A SM8S17CA 18.90 20.90 5 17.0 10 27.6 239.0 SM8S18A SM8S18CA 20.00 22.10 5 18.0 10 29.2 226.0 SM8S20A SM8S20CA 22.20 24.50 5 20.0 10 32.4 204.0 SM8S22A SM8S22CA 24.40 26.90 5 22.0 10 35.5 186.0 SM8S24A SM8S24CA 26.70 29.50 5 24.0 10 38.9 170.0 SM8S26A SM8S26CA 28.90 31.90 5 26.0 10 42.1 157.0 SM8S28A SM8S28CA 31.10 34.40 5 28.0 10 45.4 145.0 SM8S30A SM8S30CA 33.30 36.80 5 30.0 10 48.4 136.0 SM8S33A SM8S33CA 36.70 40.60 5 33.0 10 53.3 124.0 SM8S36A SM8S36CA 40.00 44.20 5 36.0 10 58.1 114.0 SM8S40A SM8S40CA 44.40 49.10 5 40.0 10 64.5 102.0 SM8S43A SM8S43CA 47.80 52.80 5 43.0 10 69.4 95.0 Asia-Pacific: Tel: +886-2 2562-4117 Email: asiacus bourns.com EMEA: Tel: +36 88 885 877 Email: eurocus bourns.com The Americas: Tel: +1-951 781-5500 Email: americus bourns.com www.bourns.com WARNING Cancer and Reproductive Harm - www.P65Warnings.ca.gov *RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011. **Q part number suffix for automotive and other applications requiring appropriate AEC-Q101 compliance. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. 203 *RoHS COMPLIANT VERSIONS AVAILABLE *RoHS COMPLIANT LEAD FREE LEAD FREE VERSIONS ARE RoHS COMPLIANT* *RoHS & **AEC-Q101 COMPLIANT *RoHS COMPLIANT AEC APPROVED (Select Models)SM8S-Q Transient Voltage Suppressor Diode Series Performance Graphs Load Dump Power Characteristics Steady State Power Dissipation 6000 8.0 5000 6.0 4000 4.0 3000 2000 2.0 1000 0 0 0 25 50 75 100 125 150 175 0 50 100 150 200 Case Temperature, T (C) Case Temperature (C) c (10 ms Exponential Waveform) Pulse Waveform Maximum Non-Repetitive Surge Current 150 10000 T = 25 C J t = 10 s r Pulse width (td) is defined as the point where the peak current decays to 50 % of I PPM Peak value (I ) PPM 100 Half value = I PPM 50 t d 0 1000 0 10 20 30 40 10 100 t - Time (ms) Pulse Width (ms) - 1/2 I Exponential Waveform PP Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Input Peak Pulse Current (%) Load Dump Power (W) Reverse Surge Power (W) Power Dissipation (W)