DescriptionThe 1N747A-1 is a 0.5 watt Zener Voltage Regulators.It provides a selection from 2.4 to 12 volts in standard 5% or 10% tolerances as well as tighter tolerances identified by different suffix letters on the part number. The 1N747A-1 is also available with an internal-metallurgical-bond option by adding a "-1" suffix.These are also available in JAN, JANTX, and JANTXV military qualifications. Microsemi also offers numerous other Zener products to meet higher and lower power applications.
Features of the 1N747A-1 are:(1)Internal metallurgical bond option available by adding a "-1" suffix;(2)Also available in JAN, JANTX, and JANTXV qualifications per MIL-PRF-19500/127 by adding the JAN, JANTX, or JANTXV prefixes to part numbers for desired level of screening as well as 1" suffix; (e.g. JANTX1N751A-1, JANTXV1N758C-1, etc.);(3)Military Surface Mount equivalents of the 1N747A-1 also available in DO-213AA by adding a UR-1 suffix in addition to the JAN, JANTX, and JANTXV prefix; e.g. JANTX1N962BUR-1 (see separate data sheet);(4) Commercial Surface Mount equivalents available as MLL746 to MLL759A and MLL4370 to MLL4372A including the "-1" suffix in the DO-213AA MELF style package (consult factory for others);(5)DO-7 glass body axial-leaded Zener equivalents are also available.
The absolute maximum ratings of the 1N747A-1 can be summarized as:(1)Operating and Storage temperature:-65ºC to +175ºC;(2)Thermal Resistance: 250 ºC/W junction to lead at 3/8(10 mm) lead length from body, or 310ºC/W junction to ambient when mounted on FR4 PC board (1 oz Cu)with 4 mm2 copper pads and track width 1 mm, length 25 mm;(3)Steady-State Power: 0.5 watts at TL < 50oC 3/8 inch(10 mm) from body or 0.48 W at TA < 25ºC when mounted on FR4 PC board as described for thermal resistance above (also see Figure1);(4)Forward voltage of the 1N747A-1 @200 mA:1.1 volts;(5)Solder Temperatures:260 ºC for 10 s (max).
If you want to know more information such as the electrical characteristics about the 1N747A-1, please download the datasheet in www.seekic.com or www.chinaicmart.com .
1N747A-1 Data Sheet
