Diodes Incorporated S3AB-13-F

Overview

S3AB-13-F from Diodes Incorporated is a 3.0A, 50V peak repetitive reverse voltage glass passivated surface-mount rectifier in SMB package, featuring 1.15V forward voltage at 3.0A, 100A non-repetitive surge capability, and RoHS-compliant matte tin plating-used for AC/DC input rectification in compact power supplies.

For engineers reviewing the S3AB-13-F datasheet, S3AB-13-F pinout, S3AB-13-F application, or S3AB-13-F equivalent, key selection criteria include V_RRM=50V, I_O=3.0A @ T_T=75°C, thermal resistance R_θJT=10°C/W, low-profile SMB footprint, and 10µA max reverse leakage at 25°C.

Technical Context

This device operates as a single-phase, half-wave silicon rectifier with glass passivation ensuring stable junction integrity under thermal cycling. Its 1.15V V_FM at 3.0A enables efficient power conversion in space-constrained designs, while the 100A I_FSM rating supports brief inrush events without degradation.

The SMB package provides 10°C/W junction-to-terminal thermal resistance when mounted on a 5.0 mm² copper pad, and its 40 pF typical capacitance (measured at 1 MHz, 4V reverse bias) minimizes high-frequency switching noise in offline SMPS front-end stages.

Key Specifications

Pinout & Package

Package: SMB (Surface-Mount Body), molded plastic case per UL 94V-0, cathode indicated by band or notch, weight ≈0.093 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SB350-TB and ES3A-E3/57T, S3AB-13-F delivers optimal balance of thermal performance (10°C/W), compact SMB footprint, and proven manufacturability-making it preferred for consumer-grade power adapters where cost, size, and yield are co-optimized.

Availability

S3AB-13-F is available at Aetrix Electronics and suitable for AC/DC wall adapters, USB power delivery front-ends, and industrial control power supplies requiring stable component supply across production lifecycles.

Supply support for S3AB-13-F 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 S3A/B series belongs to Diodes' general-purpose rectifier product line, engineered specifically for high-yield surface-mount assembly in cost-sensitive, high-volume power conversion applications.

FAQ

What is the maximum allowable junction temperature for continuous operation?

The S3AB-13-F has an operating junction temperature range of –65°C to +150°C. For reliable long-term operation, junction temperature should be maintained below 150°C under worst-case conditions-including ambient temperature, power dissipation (I_F × V_FM), and thermal resistance path to ambient.

Can S3AB-13-F replace S3A-13-F in the same PCB layout?

No-S3AB-13-F uses the SMB package (3.30–3.94 mm length), while S3A-13-F uses the larger SMC package (5.59–6.22 mm length). Pad layouts, thermal relief, and stencil apertures are not interchangeable; mechanical interference and solder joint reliability would be compromised.

Is this diode suitable for use in a full-wave bridge configuration?

Yes-S3AB-13-F is rated for single-phase, half-wave operation but may be used as one leg in a discrete full-wave bridge. Ensure all four devices share matched V_FM and thermal mounting to avoid current imbalance; do not exceed 50V reverse bias per diode in bridge topology.

Does the "-F" suffix indicate halogen-free status?

Yes-the "-F" suffix denotes Diodes Incorporated's "Green" qualification: bromine <900 ppm, chlorine <900 ppm (total Br+Cl <1500 ppm), and antimony <1000 ppm, meeting IPC-4101D requirements for environmentally compliant PCB assembly.