BD237 (NPN), BD234 (PNP), BD238 (PNP) Preferred Devices Plastic Medium Power Bipolar Transistors Designed for use in 5.0 to 10 W audio amplifiers and drivers utilizing complementary or quasi complementary circuits. Features 2.0 AMPERES POWER TRANSISTORS 25 WATTS • DC Current Gain − • • • http://onsemi.com hFE = 40 (Min) @ IC = 0.15 Adc Epoxy Meets UL 94 V0 @ 0.125 in ESD Ratings: Human Body Model, 3B; >8000 V Machine Model, C; >400 V Pb−Free Packages are Available* ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎ TO−225 CASE 77 STYLE 1 MAXIMUM RATINGS Symbol BD234 BD237 BD238 Collector−Emitter Voltage VCEO 45 80 Vdc Collector−Base Voltage VCBO 60 100 Vdc Emitter−Base Voltage VEBO 5.0 Vdc IC 2.0 Adc Base Current IB 1.0 Adc Total Device Dissipation @ TC = 25_C PD 25 W TJ, Tstg – 55 to + 150 _C Rating Collector Current Operating and Storage Junction Temperature Range Unit 3 2 1 MARKING DIAGRAM YWW BD23xG BD23x x Y WW G ORDERING INFORMATION THERMAL CHARACTERISTICS Characteristic Thermal Resistance, Junction−to−Case Symbol RqJC Max Unit _C/W 5.0 Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied, damage may occur and reliability may be affected. = Device Code = 4, 7 or 8 = Year = Work Week = Pb−Free Package Device BD234 BD234G BD237 BD237G BD238 BD238G Package Shipping TO−225 500 Units / Box TO−225 (Pb−Free) 500 Units / Box TO−225 500 Units / Box TO−225 (Pb−Free) 500 Units / Box TO−225 500 Units / Box TO−225 (Pb−Free) 500 Units / Box Preferred devices are recommended choices for future use and best overall value. *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. © Semiconductor Components Industries, LLC, 2005 November, 2005 − Rev. 14 1 Publication Order Number: BD237/D BD237 (NPN), BD234 (PNP), BD238 (PNP) ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎ ÎÎÎ ÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎÎ ÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎÎ ÎÎÎ ÎÎÎ ELECTRICAL CHARACTERISTICS (TC = 25_C unless otherwise noted) Characteristic Collector−Emitter Sustaining Voltage (Note 1) (IC = 0.1 Adc, IB = 0) Symbol Type Min Max Unit V(BR)CEO BD237, BD238 BD234 80 45 − − Vdc BD237, BD238 BD234 − − 0.1 0.1 Collector Cutoff Current (VCB = 100 Vdc, IE = 0) (VCB = 60 Vdc, IE = 0) ICBO Emitter Cutoff Current (VBE = 5.0 Vdc, IC = 0) IEBO − − 1.0 hFE1 hFE2 − − 40 25 − Collector−Emitter Saturation Voltage (Note 1) (IC = 1.0 Adc, IB = 0.1 Adc) VCE(sat) − − 0.6 Vdc Base−Emitter On Voltage (Note 1) (IC = 1.0 Adc, VCE = 2.0 Vdc) VBE(on) − − 1.3 Vdc fT − 3.0 − MHz DC Current Gain (IC = 0.15 A, VCE = 2.0 V) (IC = 1.0 A, VCE = 2.0 V) mAdc mAdc − Current−Gain − Bandwidth Product (IC = 250 mAdc, VCE = 10 Vdc, f = 1.0 MHz) − 1. Pulse Test: Pulse Width x 300 ms, Duty Cycle x 2.0%. IC, COLLECTOR CURRENT (AMP) 10 The Safe Operating Area Curves indicate IC−VCE limits below which the device will not enter secondary breakdown. Collector load lines for specific circuits must fall within the applicable Safe Area to avoid causing a catastrophic failure. To insure operation below the maximum TJ, power−temperature derating must be observed for both steady state and pulse power conditions. 100 ms 1 ms 3 5 ms TJ = 150°C 1 dc 0.3 0.1 3 1 10 BD236 BD237 30 100 VCE, COLLECTOR−EMITTER VOLTAGE (VOLTS) Figure 1. Active Region Safe Operating Area VCE , COLLECTOR−EMITTER VOLTAGE (VOLTS) 1.0 0.8 IC = 0.1 A 0.25 A 0.5 A 1.0 A 0.6 TJ = 25°C 0.4 0.2 0 0.2 0.3 0.5 1.0 2.0 3.0 5.0 10 20 IB, BASE CURRENT (mA) Figure 2. Collector Saturation Region http://onsemi.com 2 30 50 100 200 BD237 (NPN), BD234 (PNP), BD238 (PNP) hFE , DC CURRENT GAIN (NORMALIZED) 1000 700 500 1.5 VCE = 2.0 V VOLTAGE (VOLTS) 300 200 TJ = + 150°C 100 70 50 TJ = + 25°C 30 20 TJ = − 55°C r(t), NORMALIZED EFFECTIVE TRANSIENT THERMAL RESISTANCE 10 2.0 3.0 5.0 1.0 0.7 0.5 D = 0.5 0.3 D = 0.2 10 0.2 D = 0.1 0.1 0.07 0.05 D = 0.05 20 30 0.9 VBE(sat) @ IC/IB = 10 0.6 VBE @ VCE = 2.0 V 0.3 50 100 0 2.0 3.0 5.0 200 300 500 1000 2000 VCE(sat) @ IC/IB = 10 10 20 30 50 100 200 300 500 1000 2000 IC, COLLECTOR CURRENT (mA) IC, COLLECTOR CURRENT (mA) Figure 3. Current Gain Figure 4. “On” Voltages SINGLE PULSE qJC(t) = r(t) qJC qJC = 4.16°C/W MAX qJC = 3.5°C/W TYP D = 0.01 P(pk) D CURVES APPLY FOR POWER PULSE TRAIN SHOWN READ TIME AT t1 TJ(pk) − TC = P(pk) qJC(t) 0.03 0.02 0.01 0.01 TJ = 25°C 1.2 0.02 0.03 0.05 0.1 0.2 0.3 0.5 1.0 2.0 3.0 5.0 10 t, TIME or PULSE WIDTH (ms) Figure 5. Thermal Response http://onsemi.com 3 20 30 50 t1 t2 DUTY CYCLE, D = t1/t2 100 200 300 500 1000 BD237 (NPN), BD234 (PNP), BD238 (PNP) PACKAGE DIMENSIONS TO−225 CASE 77−09 ISSUE Z −B− U F Q −A− NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. 077−01 THRU −08 OBSOLETE, NEW STANDARD 077−09. C M 1 2 3 H DIM A B C D F G H J K M Q R S U V K J V G S R 0.25 (0.010) A M M B M D 2 PL 0.25 (0.010) M A M B M INCHES MIN MAX 0.425 0.435 0.295 0.305 0.095 0.105 0.020 0.026 0.115 0.130 0.094 BSC 0.050 0.095 0.015 0.025 0.575 0.655 5_ TYP 0.148 0.158 0.045 0.065 0.025 0.035 0.145 0.155 0.040 −−− MILLIMETERS MIN MAX 10.80 11.04 7.50 7.74 2.42 2.66 0.51 0.66 2.93 3.30 2.39 BSC 1.27 2.41 0.39 0.63 14.61 16.63 5 _ TYP 3.76 4.01 1.15 1.65 0.64 0.88 3.69 3.93 1.02 −−− STYLE 1: PIN 1. EMITTER 2. COLLECTOR 3. BASE ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). 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