The data sheet provides details on the 0.5 watt glass surface mount Zener voltage regulators 1N5518BUR-1 to 1N5546BUR-1 (or MLL5518B-1 to MLL5546B-1). These products have standard 5% tolerances, as well as tighter tolerances identified by different suffix letters on the part number. They also have an internal-metallurgical-bond option as identified by the “–1” suffix. This internally bonded Zener package construction is also in JAN, JANTX, and JANTXV military qualifications. Microsemi also offers numerous other Zener products to meet higher and lower power applications.
The IN5518BUR-1 to 1N5546BUR-1 series are 0.5 W glass surface‑mount Zener voltage regulators offering selectable voltages from 3.3 V to 33 V with standard ±5 % tolerance (B suffix) and tighter tolerances with C or D suffixes. They feature an internal metallurgical bond (‑1 suffix) and are qualified to military standards (JAN, JANTX, JANTXV).
The datasheet provides electrical characteristics such as forward voltage, thermal resistance, and noise performance, as well as mechanical details like the DO‑213AA (SOD80/MLL34) MELF package, weight, and recommended soldering conditions. Package dimensions and graphs for noise density and power derating are also included.
| Power rating | 0.5 W |
|---|---|
| Voltage range | 3.3 V to 33 V |
| Voltage tolerance | ±5 % (B suffix) |
| Operating temperature range | -65 °C to +175 °C |
| Forward voltage @200 mA | 1.1 V |
| Maximum solder temperature | 260 °C for 10 s (max) |
| Thermal resistance | 100 °C·W⁻¹ junction‑to‑end‑cap, 250 °C·W⁻¹ junction‑to‑ambient |
| Package type | DO‑213AA (SOD80 or MLL34) MELF |
| Weight | 0.04 g |
The diodes are rated for 0.5 W (500 mW) power dissipation.
They operate from –65 °C up to +175 °C.
The forward voltage is 1.1 V at 200 mA.
It uses a hermetically sealed glass DO‑213AA (SOD80 or MLL34) MELF style package.