4 V(L+0.75D) 180 Ø:Temperature( C)

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1 HELMHOLZ RESONATOR: F or increasing pressure level and/or modifying Our standard circuit for measurement is as shown below: resonant frequency. It is possible to increase the pressure (V = 0.15 volts or lower) CE level at a certain frquency. An appropriate resonator is DCV provided for an acoustic transtic transducer as illustrated below. The resonant frequency is determined by the equation given below, through a slight adjustment is necessary to add volume encolsed within the transducer. DIODE BUZZER +.5V Formula: f = CD 1 4 V(L+0.75D) 0 f : frequency 3 V:Resonance volume(m ) tr: SC1741AS or equivalent D:Hole diameter(m) L:Hole length(m) (V CE= 0.15 volts or lower) C:Speed pf (334 m/sec 0 C) C= Ø 180 Ø:Temperature S: The term "Rated Voltage" in the specification of MEGA's transducers and buzzer are described as For Miniature Audio Transducers(External Drive Circuitry) e.g. MB-1501RP: Rated Voltage is"v" V 0 hole diameter RELIABILITY: Vibration test Drop test TEST ITEM High temperature storage test Low temperature storage test Thermal shock test Standard condition life test Anti-humidity operating test Solder heat withstanding test Terminal force test STANDARD TEST CONDITION: Normal temperature Normal humidity Normal atmospheric pressure VPEAK V=V 0-P TEMPERATURE PROFILE FOR REFLOWABLE TRANSDUCERS: Reference standard: EIAJ ED Recommendable reflow soldering condition is as follow. (Reflow soldering is two times) Note: It is requested that nd reflow sodering should be executed after heat of product goes down to normal temperature.. Manual soldering Soldering iron temperature: C, within 10 seconds. +5 C to +35 C 45 to %RH 860 to 1060 hpa +70 C, free load TEST METHOD -30 C, free load C, each cycle 30 min. standard test circuit, V 1/ DUTY, PEAK Hz. +60 C, 90% RH, reated load Hz, 5G, X,Y,Z direction 1. 10cm,X,Y,Z, direction. with 75g case, 30cm, 6 face 60 ± 5 C 10 sec. or less by manual solder pulling force 10Kg MEASURING CIRCUIT: TEST PERIOD 100 cycles each direction Hr times. 10 times 10 times REMARK: When a doubt has arisen as to judgment, conditions must be at 0 ± C, 60 to 70%RH and 860 to 1060 hpa. REMARK: 1. No significant change shall occur both in appearance and instructure after reliability test.. Change in pressure level should be within the range of ±5dB after reliability test. 3. No abnormality both in operation and in tone quality is allowed after reliability test. 4. Specification and dimensions subject to change. For Miniature Audio Transducers snd Low Pitched Sound (Self-Contained Drive Circuitry) V TEMPERATURE pre-heating C e.g. 30 C MAX. 4 C/sec. MAX 10 sec or more 10 sec MAX 6.0V=6.0DCV (continuous) cooling by air TIME(SEC.) 57

2 MB-11 # MB-11P MAX ± max. -0 to +60 MB-111P MAX 0 4 ± max. -0 to +60 COMPACT, RICH SOUND #VALUE APPLYING.(048Hz, 1/ DUTY CYCLE,SQUARE WAVE) MB-11PS # MB-11PS MAX ± max. -0 to +60 COMPACT, RICH SOUND #VALUE APPLYING.(048Hz, 1/ DUTY CYCLE,SQUARE WAVE) MB-10 masking label potting # MB-101 MAX ± max. -40 to + MB-105 MAX 0 40 ± max. -40 to + COMPACT, RICH SOUND #VALUE APPLYING.(400Hz, 1/ DUTY CYCLE,SQUARE WAVE) 58

3 MB-1501RP COIL RESISTANCE (Ohms) # MB-RP/A COIL RESISTANCE (Ohms) # MB-RP/B COIL RESISTANCE # (Ohms) MN-1501RP 6.0 ± to.0-0 to MB-RP/A 5.0 ± max. -0 to +60 MB-RP/B MAX ± max. -0 to +60 Low profile, small ( 9.0*4.5) design. Side port, hihg output pressure level, small and low profile design. #VALUE APPLYING.(731Hz,1/ DUTY CYCLE,SQUARE WAVE) Side port, hihg output pressure level, small and low profile design. #VALUE APPLYING.(731Hz,1/ DUTY CYCLE,SQUARE WAVE) 59

4 KPE-13 # KPE-13 1 MAX ±0.5 3 to 8-30 to C0NTINUOUS G F M KPE-03 KPE-03 1 MAX ±0.5 3 to 0-30 to + CONTINUOUS KPE- KPE- 1 MAX ±0.5 3 to 0-30 to + CONTINUOUS 60

5 KPE-4 Masking Lable KPE-813 ELECTROSTATIC CAPACITY KSS-J4B0 (pf) RATED FREQUENCY COIL IMPEDANCE (Ohms) KPE-4 1 MAX ±0.5 3 to 16-0 to to CONTINUOUS KPE-813 1,000±30% MAX 6 84 MAX to C KSS-J4B to 5.0 0± to L.C.P (WHITE) Potting SOUND PORT - POLARITY + POLARITY - POLARITY + POLARITY 61

6 KSS-74B0-T/R SOUND PORT RATED FREQUENCY COIL IMPEDANCE (Ohms) 4-C KSS-74B0-T/R to 5.0 0± to L.C.P (WHITE) - POLARITY + POLARITY - POLARITY + POLARITY KT-105 REMOVE AFTER WASHING REMOVE AFTER WASHING RATED FREQUENCY COIL IMPEDANCE (Ohms) KT MAX 40 87, to ± to + PPS (GRAY) KT-11C RATED FREQUENCY KT-11C 1 MAX 30,400± to to + PPS (GRAY) 6

7 HOW TO ORDER Series MB Model No. 63