MMBD2835LT1 MOTOROLA | Alldatasheet

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1Motorola Small–Signal Transistors, FETs and Diodes Device Data /C0077/C0111/C0110/C0111/C0108/C0105/C0116/C0104/C0105/C0099 /C0068/C0117/C0097/C0108 /C0083/C0119/C0105/C0116/C0099/C0104/C0105/C0110/C0103 /C0068/C0105/C0111/C0100/C0101/C0115 MAXIMUM RATINGS (EACH DIODE) Rating Symbol Value Unit Reverse Voltage MMBD2835LT1 MMBD2836LT1 VR 35 Vdc Forward Current IF 100 mAdc THERMAL CHARACTERISTICS Characteristic Symbol Max Unit Total Device Dissipation FR–5 Board(1) TA = 25°C Derate above 25°C PD 225 1.8 mW mW/ °C Thermal Resistance, Junction to Ambient R /C0113JA 556 °C/W Total Device Dissipation Alumina Substrate,(2) TA = 25°C Derate above 25°C PD 300 2.4 mW mW/ °C Thermal Resistance, Junction to AmbientR /C0113JA 417 °C/W Junction and Storage Temperature TJ, Tstg –55 to +150 °C DEVICE MARKING MMBD2835LT1 = A3X; MMBD2836LT1 = A2X ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted) (EACH DIODE) Characteristic Symbol Min Max Unit OFF CHARACTERISTICS Reverse Breakdown Voltage (IR = 100 µAdc) MMBD2835LT1 MMBD2836LT1 V(BR) 35 Vdc Reverse Voltage Leakage Current (VR = 30 Vdc) MMBD2835LT1 (VR = 50 Vdc) MMBD2836LT1 IR — — 100 100 nAdc Diode Capacitance (VR = 0 V, f = 1.0 MHz) C T — 4.0 pF Forward Voltage (IF = 10 mAdc) Forward Voltage (IF = 50 mAdc) Forward Voltage (IF = 100 mAdc) VF — 1.0 1.0 1.2 Vdc Reverse Recovery Time (IF = IR = 10 mAdc, IR(REC) = 1.0 mAdc) (Figure 1) trr — 4.0 ns Thermal Clad is a trademark of the Bergquist Company Order this document by MMBD2835LT1/D /C0077/C0079/C0084/C0079/C0082/C0079/C0076/C0065 SEMICONDUCTOR TECHNICAL DATA /C0077/C0077/C0066/C0068/C0050/C0056/C0051/C0053/C0076/C0084/C0049 /C0077/C0077/C0066/C0068/C0050/C0056/C0051/C0054/C0076/C0084/C0049 CASE 318–08, STYLE 12 SOT–23 (TO–236AB)  Motorola, Inc. 1997 ANODE CATHODE CATHODE REV 1

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

Notes: 1. A 2.0 kΩ variable resistor adjusted for a Forward Current (IF) of 10 mA. Notes: 2. Input pulse is adjusted so IR(peak) is equal to 10 mA. Figure 1. Recovery Time Equivalent Test Circuit Figure 2. Forward Voltage Figure 3. Leakage Current Figure 4. Capacitance

/C0077/C0077/C0066/C0068/C0050/C0056/C0051/C0053/C0076/C0084/C0049 /C0077/C0077/C0066/C0068/C0050/C0056/C0051/C0054/C0076/C0084/C0049 3Motorola Small–Signal Transistors, FETs and Diodes Device Data INFORMATION FOR USING THE SOT–23 SURFACE MOUNT PACKAGE 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. SOT–23 mm inches 0.037 0.95 0.037 0.95 0.079 2.0 0.035 0.9 0.031 0.8 SOT–23 POWER DISSIPATION The power dissipation of the SOT–23 is a function of the pad size. This can vary from the minimum pad size for soldering to a pad size given for maximum power dissipation. Power dissipation for a surface mount device is determined by TJ(max), the maximum rated junction temperature 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–23 package, PD can be calculated as follows: PD = TJ(max) – TA R θJA The values for the equation are found in the maximum 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 225 milliwatts. PD = 150°C – 25°C 556°C/W = 225 milliwatts The 556°C/W for the SOT–23 package assumes the use of the recommended footprint on a glass epoxy printed circuit board to achieve a power dissipation of 225 milliwatts. There are other alternatives to achieving higher power dissipation from the SOT–23 package. Another alternative would be to use a ceramic substrate or an aluminum core board such as Thermal Clad . Using a board material such as Thermal Clad, an aluminum core board, the power dissipation can be doubled using the same footprint. SOLDERING 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 thermal 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 shall be a maximum of 10°C.
  • The soldering temperature and time shall not exceed 260°C for more than 10 seconds.
  • When shifting from preheating to soldering, the maximum temperature gradient shall 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.

/C0077/C0077/C0066/C0068/C0050/C0056/C0051/C0053/C0076/C0084/C0049 /C0077/C0077/C0066/C0068/C0050/C0056/C0051/C0054/C0076/C0084/C0049

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

CASE 318–08 ISSUE AF SOT–23 (TO–236AB) STYLE 12: PIN 1. CATHODE 2. CATHODE 3. ANODE D JK L A C B S H GV 1 2 DIM A MIN MAX MIN MAX MILLIMETERS 0.1102 0.1197 2.80 3.04 INCHES B 0.0472 0.0551 1.20 1.40 C 0.0350 0.0440 0.89 1.11 D 0.0150 0.0200 0.37 0.50 G 0.0701 0.0807 1.78 2.04 H 0.0005 0.0040 0.013 0.100 J 0.0034 0.0070 0.085 0.177 K 0.0140 0.0285 0.35 0.69 L 0.0350 0.0401 0.89 1.02 S 0.0830 0.1039 2.10 2.64 V 0.0177 0.0236 0.45 0.60 NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: INCH. 3. MAXIUMUM LEAD THICKNESS INCLUDES LEAD FINISH THICKNESS. MINIMUM LEAD THICKNESS IS THE MINIMUM THICKNESS OF BASE MATERIAL. 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 which may be provided in Motorola data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. 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. Mfax is a trademark of Motorola, Inc. How to reach us: USA / EUROPE / Locations Not Listed: Motorola Literature Distribution;JAPAN : Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center, P.O. Box 5405, Denver, Colorado 80217. 303–675–2140 or 1–800–441–2447 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 81–3–3521–8315 INTERNET : http://Design–NET.com 51 Ting Kok R oad, Tai Po, N.T., Hong Kong. 852–26629298 MMBD2835LT1/D◊