ST-025BL

Specifications ST BUZZER Acoustic Product Specification Item Unit Specification Condition Rated Voltage Vo-p 3.6 Vo-p Operating Voltage Vo-p 2.5 ~ 4.5 Mean Current mA 100 Max. Coil Resistance Ω 16 ±3 Sound Output dB 80 Rated Frequency Hz 2300 Operating Temp ℃ -30 ~ +70 Storage Temp ℃ -40 ~ +85 Dimension mm L7.5 × W7.5 × H2.5 Weight gram 0.3 At rated voltage, 2300 Hz square wave, ½ duty At 10cm(A-weight free air), at rated voltage 2300Hz, square wave, ½ duty Product Number: ST-025BL Release | Revision: C/2018 CONTENTS This document contains the technical specifications for the electromagnetic buzzer. Material LCP (Black) Terminal SMD type (Plating Sn) Environmental Protection Regulation RoHS Page 2 Environment Test Reliability Test Page 3 Frequency Response Curve Page 4 Recommended Temperature Profile Measurement Test Circuit See attached drawing Test Condition Temperature : +25±2 ℃ Relative Humidity: 65±5% Air Pressure:86-106KPa Page 1 Specifications Mechanical Characteristics See attached drawing Mechanical Characteristics Item Test condition Evaluation standard Solderability Lead terminals are immersed in the solder bath at +250±5℃ for 3±0.5 seconds. Soldering Heat Resistance The product follows the reflow temperature curve to test its reflow thermal stability. 90% min. lead terminals shall be wet with solder No interference in operation. 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 wooden board 1 time. 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. Inspection Fixture Page 5 Dimensions Page 6 Packing 1 www.soberton.com Environment Test Item Test condition Evaluation standard High Temp. Test The part is placed in a chamber at +85℃ for 96 hours Low Temp. Test The part is placed in a chamber at -30℃ 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 should be in ±10dBA compared with initial one. Temp./Humidity Cycle The part shall be subjected to 10 cycles. One cycle shall be 24 hours and consist of: ST BUZZER Acoustic Product Specification Product Number: ST-025BL Release | Revision: C/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 Page 4 Recommended Temperature Profile Measurement Test Circuit Reliability Test Item Test condition Evaluation standard Operating Life Test Ordinary Temperature The part shall be subjected to 96 hours of continuous operation at +25 ±10ºC. 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. High Temperature The part shall be subjected to 72 hours of continuous operation at +85ºC at 3.6V, 2300Hz applied. Low Temperature The part shall be subjected to 72 hours of continuous operation at -30ºC at 3.6V, 2300Hz applied. Inspection Fixture Page 5 Dimensions Page 6 Packing Standard test condition: a) Temperature: +5~+35℃ b) Humidity: 45~85% c) Pressure: 86~106KPa 2 www.soberton.com Typical Frequency Response Curve ST BUZZER Acoustic Product Specification Product Number: ST-025BL Release | Revision: C/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 Page 4 Recommended Temperature Profile Measurement Test Circuit Inspection Fixture Page 5 Dimensions Page 6 Packing www.soberton.com Recommended Temperature Profile for Reflow Oven ST BUZZER Recommendable wave soldering condition is as follows: Note 1: It is requested that reflow soldering should be executed after heat of product goes down to normal temperature. Note 2: Peak reflow temperature of 250˚C maximum of 10 seconds, with a maximum duration of 40-60 seconds between 220˚C and 250˚C Acoustic Product Specification Product Number: ST-025BL Measurement Test Circuit Release | Revision: C/2018 CONTENTS This document contains the technical specifications for the electromagnetic buzzer. Page 1 Specifications Mechanical Characteristics Page 2 Environment Test Inspection Fixture S.P.L Measuring Circuit Input Signal: 3.6 Vo-p, square wave, ½ duty, 2300 Hz Reliability Test Page 3 Frequency Response Curve Page 4 Recommended Temperature Profile Measurement Test Circuit Inspection Fixture Page 5 Dimensions Page 6 Packing Mic: RION S.P.L meter UC30 or equivalent S.G: Hewlett Packard 33120A Function Generator or equivalent 4 www.soberton.com Dimensions Tolerance: ±0.5 (unit: mm) ST BUZZER Acoustic Product Specification Product Number: ST-025BL Release | Revision: C/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 2 Diaphragm Ferrum 1 3 Magnet ring NdFeB 1 Measurement Test Circuit 4 Coil Copper 1 Inspection Fixture 5 Core Ferrum 1 Page 5 Dimensions 6 Case LCP 1 Page 3 Frequency Response Curve Page 4 Recommended Temperature Profile Page 6 Packing 5 www.soberton.com Packing ST BUZZER Acoustic Product Specification Product Number: ST-025BL Release | Revision: C/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 Page 4 Recommended Temperature Profile Packing Job L x W x H (mm) Pieces Inner Box 340 x 340 x 35 1 x 2000 = 2000pcs Carton Box 370 x 350 x 350 10 x 2000 = 20,000pcs Measurement Test Circuit Inspection Fixture Page 5 Dimensions Page 6 Packing 6 www.soberton.com