Diodes Incorporated SR106-T

Overview

SR106-T from Diodes Incorporated is a high-current, low-forward-voltage axial-lead Schottky barrier rectifier rated for 60 V repetitive peak reverse voltage, 1.0 A average forward current at 75 °C lead temperature, and 25 A non-repetitive surge current (8.3 ms half-sine). It features 0.70 V max forward voltage at 1.0 A, 10 mA max reverse leakage at 60 V and 100 °C, and DO-41 plastic package with UL 94V-0 flammability rating - used in DC/DC converter output stages and AC adapter secondary-side rectification.

For engineers reviewing the SR106-T datasheet, SR106-T pinout, SR106-T application, or SR106-T equivalent, key selection considerations include its 60 V V_RRM, 0.70 V V_F @ 1 A, 25 A I_FSM, thermal resistance of 15 K/W (junction-to-lead), and DO-41 axial package compatibility with through-hole power supply layouts.

Technical Context

This Schottky rectifier employs a guard-ringed silicon die to enhance transient voltage immunity and reduce leakage under high-temperature reverse bias. Its low forward drop and fast switching (no minority-carrier storage) minimize conduction and recovery losses in high-frequency switching power supplies.

The device operates across –65 °C to +150 °C junction temperature range, with capacitance of 80 pF at 4 V reverse bias (1 MHz), and is optimized for single-phase, half-wave rectification with resistive or inductive loads - capacitive loads require 20% current derating.

Key Specifications

Pinout & Package

DO-41 molded plastic package with axial leads; cathode identified by band. Lead finish solderable per MIL-STD-202, Method 208. Weight: 0.35 g. Moisture sensitivity Level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SR106-T, SB160-T offers superior thermal performance and lower conduction loss at high temperature, while 1N5819TR trades voltage headroom for minimal V_F - making SR106-T the balanced choice for 60 V-rated, general-purpose 1 A rectification where surge robustness and UL compliance are mandatory.

Availability

SR106-T is available at Aetrix Electronics and suitable for AC/DC adapters, industrial DC power modules, and LED driver secondary-side rectification requiring stable component supply and long-lifecycle support.

Supply support for SR106-T 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

The SRxx series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for cost-sensitive, high-efficiency secondary-side rectification in off-line power supplies and DC/DC converters up to 1 A.

FAQ

Is SR106-T suitable for synchronous rectification in modern SMPS?

No - SR106-T is a passive Schottky diode, not a synchronous rectifier IC or MOSFET driver. It lacks gate control, timing inputs, or adaptive dead-time logic. It functions as a simple uncontrolled rectifier, appropriate for fixed-frequency flyback or forward converters where simplicity and cost outweigh efficiency gains from active switching.

What is the maximum allowable PCB pad temperature during reflow soldering?

SR106-T is not rated for reflow soldering - it is an axial-lead DO-41 device intended for wave or hand soldering. Reflow exposes the molded body and internal wire bonds to thermal shock beyond JEDEC Level 1 moisture sensitivity limits. Peak board temperature must remain below 215 °C if localized heating is unavoidable, but standard reflow profiles are not recommended.

Does SR106-T have a specified reverse recovery time (t_rr)?

No - as a Schottky barrier rectifier, SR106-T has no minority-carrier storage and therefore no defined reverse recovery time. Its turn-off is governed by junction capacitance discharge, resulting in near-zero reverse recovery loss. Datasheet specifies only total capacitance (80 pF) and reverse leakage, consistent with majority-carrier conduction physics.

Can SR106-T replace SR104-T in an existing design?

Yes, with voltage margin trade-off: SR106-T (60 V V_RRM) exceeds SR104-T (40 V V_RRM) and can safely substitute where reverse voltage stress remains ≤60 V. However, its higher V_F (0.70 V vs. 0.60 V) increases conduction loss by ~17%, requiring thermal validation. No pinout or footprint change is needed - both use DO-41 axial package.