BF721T1 MOTOROLA | Alldatasheet

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1Motorola Small–Signal Transistors, FETs and Diodes Device Data /C0080/C0078/C0080 /C0083/C0105/C0108/C0105/C0099/C0111/C0110 /C0084/C0114/C0097/C0110/C0115/C0105/C0115/C0116/C0111/C0114 MAXIMUM RATINGS Rating Symbol Value Unit Collector-Emitter Voltage VCEO –300 Vdc Collector-Base Voltage VCBO –300 Vdc Collector-Emitter Voltage VCER –300 Vdc Emitter-Base Voltage VEBO –5.0 Vdc Collector Current IC –100 mAdc Total Power Dissipation up to TA = 25°C (1) PD 1.5 Watts Storage Temperature Range Tstg –65 to +150 °C Junction Temperature TJ 150 °C DEVICE MARKING DF THERMAL CHARACTERISTICS Characteristic Symbol Max Unit Thermal Resistance from Junction to Ambient(1) R θJA 83.3 °C/W ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted) Characteristic Symbol Min Max Unit OFF CHARACTERISTICS Collector-Emitter Breakdown Voltage (IC = –1.0 mAdc, IB = 0) V(BR)CEO –300 — Vdc Collector-Base Breakdown Voltage (IC = –100 µAdc, IE = 0) V(BR)CBO –300 — Vdc Collector-Emitter Breakdown Voltage (IC = –100 µAdc, RBE = 2.7 kΩ ) V(BR)CER –300 — Vdc Emitter-Base Breakdown Voltage (IE = –10 µAdc, IC = 0) V(BR)EBO –5.0 — Vdc Collector-Base Cutoff Current (VCB = –200 Vdc, IE = 0) ICBO — –10 nAdc Collector–Emitter Cutoff Current (VCE = –250 Vdc, RBE = 2.7 kΩ ) (VCE = –200 Vdc, RBE = 2.7 kΩ, TJ = 150°C) ICER –50 –10 nAdc µAdc Thermal Clad is a trademark of the Bergquist Company Preferred devices are Motorola recommended choices for future use and best overall value. Order this document by BF721T1/D /C0077/C0079/C0084/C0079/C0082/C0079/C0076/C0065 SEMICONDUCTOR TECHNICAL DATA  Motorola, Inc. 1996 /C0066/C0070/C0055/C0050/C0049/C0084/C0049 PNP SILICON TRANSISTOR SURFACE MOUNT Motorola Preferred Device CASE 318E-04, STYLE 1 SOT–223 (TO-261AA) COLLECTOR 2,4 BASE EMITTER 3 REV 3

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2 Motorola Small–Signal Transistors, FETs and Diodes Device Data

ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted) (Continued) Characteristic Symbol Min Max Unit ON CHARACTERISTICS DC Current Gain (VCE = –25 mAdc, VCE = –20 Vdc) hFE 50 — — Collector-Emitter Saturation Voltage (IC = –30 mAdc, IB = –5.0 mAdc) VCE(sat) — –0.8 Vdc DYNAMIC CHARACTERISTICS Current-Gain — Bandwidth Product (VCE = –10 Vdc, IC = –10 mAdc, f = 35 MHz) fT 60 — MHz Feedback Capacitance (VCE = –30 Vdc, IC = 0, f = 1.0 MHz) C re — 1.6 pF

/C0066/C0070/C0055/C0050/C0049/C0084/C0049 3Motorola Small–Signal Transistors, FETs and Diodes Device Data INFORMATION FOR USING THE SOT-223 SURFACE MOUNT PACKAGE POWER DISSIPATION The power dissipation of the SOT-223 is a function of the pad size. These can vary from the m inimum p ad size for soldering to the pad size given for maximu m p ower dissipation. Power dissipation for a surface mount device is determined by TJ(max), the maximum rated junction tempera- ture of the die, RθJA, the thermal resistance from the device junction to ambient; and the operating temperature, TA. Using the values provided on the data sheet for the SOT-223 package, PD can be calculated as follows. PD = TJ(max) – TA R θJA The values for the equation are found in the m aximum ratings table on the data sheet. Substituting these values into the equation for an ambient temperature TA of 25°C, one can calculate the power dissipation of the device which in this case is 1.5 watts. PD = 150°C – 25°C 83.3°C/W = 1.5 watts The 83.3°C/W for the SOT-223 package assume s the recommended collector pad area of 965 sq. mils on a glass epoxy printed circuit board to achieve a power dissipation of 1.5 watts. If spac e is at a premium , a more realistic approach is to use the device at a PD of 833 mW using the footprint shown . Using a board m aterial such as Thermal Clad, a power dissipation of 1.6 watts can be achieved using the same footprint. MOUNTING PRECAUTIONS The melting temperature of solder is higher than the rated temperature of the device. When the entire device is heated to a high temperature, failure to complete soldering within a short time could result in device failure. Therefore, the following items should always be observed in order to minimize the therma l stress to which the devices are subjected.

  • Always preheat the device.
  • The delta temperature between the preheat and soldering should be 100°C or less.*
  • When preheating and soldering, the temperature of the leads and the case must not exceed the maximum temperature ratings as shown on the data sheet. When using infrared heating with the reflow soldering method, the difference should be a maximum of 10°C.
  • The soldering temperature and time should not exceed 260°C for more than 10 seconds.
  • When shifting from preheating to soldering, the maximum temperature gradient should be 5°C or less.
  • After soldering has been completed, the device should be allowed to cool naturally for at least three minutes. Gradual cooling should be used as the use of forced cooling will increase the temperature gradient and result in latent failure due to mechanical stress.
  • Mechanical stress or shock should not be applied during cooling * Soldering a device without preheating can cause excessive thermal shock and stress which can result in damage to the device. MINIMUM RECOMMENDED FOOTPRINT FOR SURFACE MOUNTED APPLICATIONS Surface mount board layout is a critical portion of the total design. The footprint for the semiconductor packages must be the correct size to insure proper solder connection interface between the board and the package. With the correct pad geometry, the packages will self align when subjected to a solder reflow process. 0.079 2.0 0.15 3.8 0.248 6.3 0.079 2.0 0.059 1.5 0.059 1.5 0.059 1.5 0.091 2.3 mm inches 0.091 2.3 SOT–223

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4 Motorola Small–Signal Transistors, FETs and Diodes Device Data

STYLE 1: PIN 1. BASE 2. COLLECTOR 3. EMITTER 4. COLLECTOR H S F A B D G L 1 2 3 0.08 (0003) C M K J DIM A MIN MAX MIN MAX MILLIMETERS 0.249 0.263 6.30 6.70 INCHES B 0.130 0.145 3.30 3.70 C 0.060 0.068 1.50 1.75 D 0.024 0.035 0.60 0.89 F 0.115 0.126 2.90 3.20 G 0.087 0.094 2.20 2.40 H 0.0008 0.0040 0.020 0.100 J 0.009 0.014 0.24 0.35 K 0.060 0.078 1.50 2.00 L 0.033 0.041 0.85 1.05 M 0 10 0 10 S 0.264 0.287 6.70 7.30 /C0095 /C0095 /C0095 /C0095 CASE 318E–04 ISSUE H NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola was negligent regarding the design or manufacture of the part. Motorola and are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal Opportunity/Affirmative Action Employer. How to reach us: USA/EUROPE : Motorola Literature Distribution; JAPAN : Nippon Motorola Ltd.; T atsumi–SPD–JLDC, T oshikatsu Otsuki, P .O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 6F Seibu–Butsuryu–Center, 3–14–2 T atsumi Koto–Ku, T okyo 135, Japan. 03–3521–8315 INTERNET : http://Design–NET .com 51 Ting Kok Road, T ai Po, N.T ., Hong Kong. 852–26629298 BF721T1/D /C0042/C0066/C0070/C0055/C0050/C0049/C0084/C0049/C0047/C0068/C0042