STMicroelectronics 1N6263

Overview

1N6263 from STMicroelectronics is a small-signal Schottky diode optimized for UHF/VHF detection and ultrafast pulse applications, featuring 60 V repetitive peak reverse voltage (V_RRM), 15 mA forward continuous current (I_F), 0.41 V forward voltage at 1 mA, 2.2 pF junction capacitance at 0 V, and 100 ps reverse recovery time (τ).

For engineers reviewing the 1N6263 datasheet, 1N6263 pinout, 1N6263 application, or 1N6263 equivalent, key selection criteria include low V_F for signal detection sensitivity, sub-100 ps switching for pulse fidelity, DO-35 package thermal resistance (R_th(j-a) = 400 °C/W), and stable leakage (<0.2 µA at 50 V) across -65 to 200 °C junction temperature range.

Technical Context

This diode employs a metal-to-silicon Schottky junction enabling low turn-on voltage and minimal minority-carrier storage. Its ultrafast 100 ps recovery time supports high-frequency demodulation and narrow-pulse rectification without tail current distortion.

Designed for operation up to 200 °C junction temperature, it maintains stable reverse leakage (≤0.2 µA at VR = 50 V) and capacitance (2.2 pF at VR = 0 V, f = 1 MHz), making it suitable for broadband RF detector front-ends where dynamic range and thermal resilience are critical.

Key Specifications

Pinout & Package

DO-35 glass axial package with cathode identified by a clear ring marking at one end; leads are tinned copper alloy, weight 0.15 g, maximum lead temperature 230 °C for 10 s soldering at 4 mm from case.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky diode detection applications.

Compared with 1N5711 and HSMS-2850, the 1N6263 uniquely balances 60 V V_RRM, 100 ps τ, and DO-35 robustness-making it optimal for wide-dynamic-range UHF detector modules requiring thermal resilience and through-hole reliability.

Availability

1N6263 is available at Aetrix Electronics and suitable for UHF/VHF detection, RF power monitoring, pulse edge sensing, and zero-bias energy harvesting applications requiring stable component supply across extended temperature ranges.

Supply support for 1N6263 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing analog, power, and microcontroller solutions for industrial, automotive, and consumer markets.

The 1N6263 belongs to ST's legacy small-signal Schottky diode product line, engineered specifically for high-frequency RF detection and ultrafast pulse applications demanding low V_F, controlled C_j, and wide thermal operating range.

FAQ

What is the maximum junction temperature for continuous operation of the 1N6263?

The 1N6263 has a specified junction temperature range of -65 to 200 °C. It is rated for continuous operation up to 200 °C, supported by its 400 °C/W junction-to-ambient thermal resistance under standard DO-35 mounting conditions with 4 mm lead length and infinite heatsink assumptions.

Can the 1N6263 be used in zero-bias detector circuits?

Yes-the 1N6263 is explicitly designed for zero-bias operation, with a typical forward voltage of only 0.41 V at 1 mA and low junction capacitance (2.2 pF). Its low V_F and minimal leakage (<0.2 µA at 50 V) enable reliable RF envelope detection without external bias, especially in VHF/UHF receivers and energy-harvesting sensors.

How does the 100 ps reverse recovery time impact high-frequency performance?

The 100 ps reverse recovery time (measured via Krakauer method) directly enables operation beyond 3 GHz in pulse and RF detection applications. It minimizes charge storage effects and recovery overshoot, preserving signal fidelity in narrow-pulse conditioning and high-speed demodulation where longer τ would distort leading/trailing edges.

Is the DO-35 package suitable for reflow soldering?

No-the DO-35 package is intended for wave or hand soldering only. The datasheet specifies a maximum lead temperature of 230 °C for 10 seconds at 4 mm from the case. Reflow profiles exceed this thermal limit and risk glass-to-metal seal failure; ST recommends traditional through-hole soldering methods for reliable assembly.