The 1N5518BUR-1 is a 0.5 watt glass surface mount Zener voltage regulator series offering a selection from 3.3 to 33 volts in standard 5% tolerances as well as tighter tolerances identified by different suffix letters on the part number. These 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 thru 1N5546BUR-1 series provides low‑voltage surface‑mount Zener diodes (0.5 W) covering a voltage range of 3.3 V to 33 V. They are available with standard ±5 % tolerance (B suffix) and tighter ±2 % (C suffix) or ±1 % (D suffix) options, and feature an internal metallurgical bond indicated by the “‑1” suffix.
Key features include hermetically sealed glass DO‑213AA (SOD80/MELF) packages, MIL‑PRF‑19500/437 military qualifications (JAN, JANTX, JANTXV), operating temperature from –65 °C to +175 °C, thermal resistance of 100 °C·W⁻¹ (junction‑to‑end‑cap), forward voltage of 1.1 V at 200 mA, and a recommended soldering temperature of 260 °C for 10 s.
| Power rating | 0.5 W |
|---|---|
| Voltage range | 3.3 V – 33 V |
| Package type | Hermetically sealed glass DO‑213AA (SOD80/MELF) |
| Operating temperature | –65 °C to +175 °C |
| Thermal resistance | 100 °C·W⁻¹ (junction‑to‑end‑cap) |
| Forward voltage @200 mA | 1.1 V |
| Solder temperature (max) | 260 °C for 10 s |
The diodes operate and can be stored from –65 °C up to +175 °C.