1N746-1N759A,1N4370-1N4372A DO-35 series are silicon 500mW Zener diodes produced by Microsemi company. The features are JEDEC registered, internal metallurgical bonding, optional MIL-PRF-19500/127 certification, optional military surface mounting, etc.
The handbook describes Microsemi's 0.5 W Zener voltage regulator series 1N746‑1N759A and 1N4370‑1N4372A. It lists voltage options from 2.4 V to 12 V with standard 5 % or 10 % tolerances and tighter tolerances identified by suffix letters. The devices are offered in glass axial‑lead DO‑35 packages and surface‑mount equivalents.
Key electrical data include operating temperature range, thermal resistance, steady‑state power, forward voltage at 200 mA, and recommended soldering conditions. Mechanical details such as hermetically sealed glass case, lead plating, polarity marking, and package dimensions are also provided.
| Power rating | 0.5 W |
|---|---|
| Operating temperature range | -65 °C to +175 °C |
| Thermal resistance | 250 °C·W⁻¹ junction‑to‑lead |
| Steady‑state power (50 °C case) | 0.5 W |
| Forward voltage @200 mA | 1.1 V |
| Soldering temperature | 260 °C for 10 s max |
| Package type | DO‑35 (DO‑204AH) hermetically sealed axial‑lead glass |
| Weight | 0.2 g |
They are rated for 0.5 W continuous dissipation.
They operate from –65 °C up to +175 °C.
They are supplied in a hermetically sealed axial‑lead glass DO‑35 (DO‑204AH) package.
The forward voltage is 1.1 V at 200 mA.