ST-0402S

Specifications Item Unit Specification Rated Frequency Hz 4000 ST BUZZER Rated Voltage Vo-p 3 Acoustic Product Specification Operating Voltage Vo-p 2.0 ~ 4.0 Mean Current mA 90 Max. Coil Resistance Ω 17 ±3 Sound Pressure Level dB 70 Operating Temp ℃ -30 ~ +70 Storage Temp ℃ -40 ~ +85 Dimension mm L4.0 × W4.0 × H2.0 Weight gram 0.1 Product Number: ST-0402S Housing Material Leading Pin Release | Revision: B/2018 Vo-p= ½ duty, square wave At 10cm rated voltage See attached drawing LCP (Black) SMD type Environmental Protection Regulation CONTENTS This document contains the technical specifications for the electromagnetic buzzer. Condition Tin plated (Sn) See attached drawing RoHS Test Condition Temperature : +25±2 ℃ Relative Humidity: 65±5% Air Pressure:86-106KPa Mechanical Characteristics Page 1 Specifications Item Test condition Evaluation standard Mechanical Characteristics Solderability Lead terminals are immersed in rosin for 5 seconds and then immersed in the solder bath at +250 ±5℃ for 3 ±1 seconds. 90% min. lead terminals shall be wet with solder No interference in operation. Soldering Heat Resistance The product follows the reflow temperature curve to test its reflow thermal stability. Terminal Mechanical Strength Lead pads shall be soldered on the pc board, and the force of 9.8N (1.0kg) shall be applied to the part for 10 seconds. No damage and cutting off Vibration The part shall be subjected to a vibration cycle of 10Hz to 55Hz to 10Hz in a period of 1 minute. Total peak amplitude shall be 1.52mm(9.3G). The vibration test shall consist of 2 hours per axis in each three axes (X,Y,Z). Total 6 hours. Drop Test The part is dropped from a height of 75cm onto a 40mm thick wooden board 3 times in 3 axes (X,Y,Z). Total of 9 times. After the test, the part shall meet specifications without any damage in appearance and performance except SPL. The SPL should be in ±10dBA compared with initial one. Page 2 Environment Test Reliability Test Page 3 Frequency Response Curve Testing Method Page 4 Recommended Driving Circuit Soldering Conditions Page 5 Dimensions Page 6 Packing www.soberton.com 1 Environment Test ST BUZZER Acoustic Product Specification Item Test condition Evaluation standard High Temperature Test The part is placed in a chamber at +85℃ for 96 hours. Low Temperature Test The part is placed in a chamber at -40℃ for 96 hours. Thermal Shock The part shall be subjected to 10 cycles. Each cycle shall consist of; After the test, the part shall meet specifications without any degradation in appearance and performance except SPL. After 4 hours at +25℃, the SPL shall be in ±10dBA compared with initial one. Temperature Cycle Test The part shall be subjected to 10 cycle shall be 24 hours and consist of: Product Number: ST-0402S Release | Revision: B/2018 CONTENTS This document contains the technical specifications for the electromagnetic buzzer. Page 1 Specifications Mechanical Characteristics Page 2 Environment Test Reliability Test Reliability Test Item Test Condition Evaluation Standard Ordinary Temperature The part shall be subjected to 96 hours of continuous operation at +25˚C±10˚C. High Temperature The part shall be subjected to 72 hours of continuous operation at +85℃ with 3.0V, 4000Hz applied. Low Temperature The part shall be subjected to 72 hours of continuous operation at -40℃ with 3.0V, 4000Hz applied. After the test, the part shall meet specifications without any degradation in appearance and performance except SPL. After 4 hours at +25℃, the SPL should be in ±10dBA compared with initial one. Page 3 Frequency Response Curve Testing Method Page 4 Recommended Driving Circuit Standard Test Condition: a) Temperature: +5~+35℃ Soldering Conditions b) Humidity: 45~85% Page 5 Dimensions c) Pressure: 86~106KPa Page 6 Packing www.soberton.com Typical Frequency Response Curve ST BUZZER Acoustic Product Specification Product Number: ST-0402S Testing Method STANDARD MEASUREMENT CONDITIONS: Temperature: 25 ±2 ˚C Humidity: 45 ~ 65% Release | Revision: B/2018 ACOUSTIC CHARACTERISTICS The oscillation frequency, current consumption and sound pressure are measured by the measuring instruments shown below CONTENTS This document contains the technical specifications for the electromagnetic buzzer. Page 1 Specifications Mechanical Characteristics Page 2 Environment Test In the measuring test, buzzer is placed as follows: Reliability Test Page 3 Frequency Response Curve Testing Method Page 4 Recommended Driving Circuit Soldering Conditions Page 5 Dimensions Page 6 Packing 3 www.soberton.com Recommended Driving Circuit The base current Ib should high enough so that it saturates the collector current of the transistor with the CB load. ST BUZZER Acoustic Product Specification Product Number: ST-0402S Soldering Conditions Release | Revision: B/2018 1.) Recommendable reflow soldering condition is as follows (Reflow soldering is twice) Note: It is requested that reflow soldering should be executed after heat of product goes down to normal. Heat resistant line (Used when heat resistant reliability test is performed) 2.) Manual soldering: Manual soldering temperature 350 ºC within 5 sec. CONTENTS This document contains the technical specifications for the electromagnetic buzzer. Page 1 Specifications Mechanical Characteristics Page 2 Environment Test Reliability Test Page 3 Frequency Response Curve Testing Method Page 4 Recommended Driving Circuit Soldering Conditions Page 5 Dimensions Page 6 Packing 4 www.soberton.com Dimensions Tolerance: ±0.5 (unit: mm) ST BUZZER Acoustic Product Specification Product Number: ST-0402S Release | Revision: B/2018 CONTENTS This document contains the technical specifications for the electromagnetic buzzer. Page 1 Specifications Mechanical Characteristics Page 2 Environment Test Reliability Test No. Part Name Material Quantity 1 Case LCP 1 Testing Method 2 Core Ferrum 1 Page 4 Recommended Driving Circuit 3 Coil Copper 1 4 Magnet Ring NdFeB 1 5 Diaphragm Nickel Alloy + Ferrum 1 6 Case LCP 1 Page 3 Frequency Response Curve Soldering Conditions Page 5 Dimensions Page 6 Packing 5 www.soberton.com Packing ST BUZZER Acoustic Product Specification Product Number: ST-0402S Release | Revision: B/2018 CONTENTS This document contains the technical specifications for the electromagnetic buzzer. Page 1 Specifications Mechanical Characteristics Page 2 Environment Test Reliability Test Page 3 Frequency Response Curve Packing L x W x H (mm) Pieces Inner Box 330 x 330 x 30 1 x 3000 = 3,000pcs Testing Method Carton Box 370 x 350 x 350 10 x 3000 = 30,000pcs Page 4 Recommended Driving Circuit Soldering Conditions Page 5 Dimensions Page 6 Packing 6 www.soberton.com