SMBJ4728

Features:

• Surface mount equivalent to 1N4728 to 1N4764A
• Ideal for high-density and low-profile mounting
• Zener voltage available 3.3V to 200V
• Standard voltage tolerances are plus/minus 5% with A suffix and 10 % with no suffix identification
• Tight tolerances available in plus or minus 2% or 1% with C or D suffix respectively
• Options for screening in accordance with MIL-PRF-19500 for JAN, JANTX, JANTXV, and JANS are available by adding MQ, MX, MV, or MSP prefixes respectively to part numbers.



Application

Regulates voltage over a broad operating currentand temperature range
Wide selection from 3.3 to 100 V
Popular DO-214AA or DO-215AA packages and footprints for either high density J-bend or Gull-wing designs for visible solder joints
Nonsensitive to ESD per MIL-STD-750 Method 1020
Moisture classification: Level 1 per IPC/JEDEC JSTD- 020B with no dry pack required


Specifications

Power dissipation at 25ºC: 2.0 watts (also see derating in Figure 1).
 Operating and Storage temperature: -65ºC to +150ºC
Thermal Resistance: 35 ºC/W junction to lead, or 100ºC/W junction to ambient when mounted on FR4 PC board (1oz Cu) with recommended footprint (see last page)
 Steady-State Power: 2 watts at TL < 80oC, or 1.25 watts at TA = 25ºC when mounted on FR4 PC board with recommended footprint (also see Figure 1)
 Forward voltage @200 mA: 1.2 volts (maximum)
 Solder Temperatures: 260 ºC for 10 s (maximum) 


Description

  The SMBJ4728A-4764A and SMBG4728A-4764A series of surface mount 2.0 watt Zeners provides voltage regulation in a selection from 3.3 to 100 volts with different tolerances as identified by suffix letter on the part number. This surface mount product series with lower thermal resistance features is equivalent to the JEDEC registered 1N4728 thru 1N4764A with identical electrical characteristics except SMBJ4728 is rated at 2.0 W instead of 1.0 W. It is available in J-bend design (SMBJ) with the DO-214AA package for greater PC board mounting density or in Gull-wing design (SMBG) in the DO-215AA for visible solder connections. Microsemi also offers numerous other Zener products to meet higher and lower power applications.