Diodes Incorporated SB130-T

Overview

SB130-T from Diodes Incorporated is a 1.0A, 30V Schottky barrier rectifier in DO-41 plastic package, featuring low forward voltage drop (0.70 V @ 1.0A), 40A non-repetitive surge capability, and operation up to +150°C junction temperature. It serves as a high-efficiency freewheeling diode in DC-DC converters and polarity protection element in 5–24V industrial power supplies.

For engineers reviewing the SB130-T datasheet, SB130-T pinout, SB130-T application, or SB130-T equivalent, key selection criteria include forward voltage at rated current, thermal resistance (R_JL = 15°C/W), peak reverse voltage margin, and RoHS-compliant tin-plated leads for lead-free reflow compatibility.

Technical Context

This discrete Schottky rectifier uses a guard-ringed silicon die construction to suppress transient-induced avalanche breakdown. Its low R_JL (15°C/W) enables direct lead-mount thermal dissipation without heatsinking under 1.0A continuous load at T_L ≤ 75°C.

The device exhibits soft reverse recovery and minimal stored charge-critical for reducing switching losses in 100–500kHz flyback and buck converter freewheel paths. Capacitance is 100pF at 4V reverse bias (f = 1MHz), supporting stable high-frequency operation.

Key Specifications

Pinout & Package

DO-41 plastic axial package with cathode band marking. Leads are bright tin-plated, solderable per MIL-STD-202 Method 208. Mounting position unrestricted.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS13 and 1N5819TR, SB130-T uniquely combines DO-41 through-hole compatibility, guard-ring transient hardening, and +150°C rating-making it optimal for repairable, high-reliability 24V embedded power rails.

Availability

SB130-T is available at Aetrix Electronics and suitable for DC-DC converter freewheeling, industrial polarity protection, and automotive reverse-battery safeguarding requiring stable component supply across long-lifecycle programs.

Supply support for SB130-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 Europe.

The SBxx0 Schottky rectifier series targets cost-sensitive, high-volume power conversion applications demanding reliability, low loss, and extended temperature operation in industrial and automotive environments.

FAQ

What is the maximum allowable lead temperature during soldering?

The SB130-T leads are tin-plated and compliant with MIL-STD-202 Method 208. Peak soldering temperature must not exceed 260°C for ≤10 seconds. Preheating to 150°C before soldering is recommended to minimize thermal shock to the epoxy body.

Can SB130-T replace SB120-T in existing designs?

Yes-SB130-T shares identical DO-41 package, pinout, and thermal characteristics with SB120-T, but offers higher V_RRM (30V vs. 20V). This provides additional reverse voltage margin in 12V systems subject to load-dump transients, with no layout or thermal redesign needed.

Is SB130-T suitable for high-frequency switching above 1MHz?

While optimized for 100–500kHz converters, SB130-T's 100pF capacitance at 4V reverse bias supports operation up to ~2MHz in low-current (<200mA) applications. For >1MHz, consider smaller-package Schottkys like SMAJ30A with lower C_T.

Does SB130-T require derating for capacitive loads?

Yes-per datasheet Note 1, average forward current must be derated by 20% when used with capacitive loads due to increased RMS current and peak stress. At full 1.0A rating, limit capacitive-load operation to 0.8A average to ensure reliability and thermal stability.