Diodes Incorporated S2BA-13

Overview

S2BA-13 from Diodes Incorporated is a glass passivated surface-mount silicon rectifier diode in SMA package, rated for 100 V peak repetitive reverse voltage (VRRM), 1.5 A average forward current (I(AV)) at 100°C terminal temperature, and 50 A non-repetitive surge current (IFSM). It delivers low forward voltage drop (1.15 V @ 1.5 A) and exhibits 5.0 µA peak reverse current at 25°C, making it suitable for AC/DC input rectification in compact power supplies.

For engineers reviewing the S2BA-13 datasheet, S2BA-13 pinout, S2BA-13 application, or S2BA-13 equivalent, key selection considerations include its SMA footprint compatibility, thermal resistance (20 °C/W junction-to-terminal), derating behavior under capacitive loads, and RoHS-compliant lead-free finish per EU Directive Annex Notes 5 and 7.

Technical Context

This device operates as a single-phase, half-wave rectifier for 60 Hz line-frequency applications with resistive or inductive loads. Its glass passivated die construction ensures stable reverse leakage and robust surge tolerance, while the SMA package enables automated placement and efficient PCB-level heat dissipation via 5.0 mm² copper pads.

Electrical performance is characterized at TA = 25°C unless otherwise specified, with thermal derating defined up to 150°C junction temperature. Capacitance is measured at 1.0 MHz and 4.0 V DC reverse bias, yielding 20 pF typical value - relevant for high-frequency noise filtering in EMI-sensitive designs.

Key Specifications

Pinout & Package

Package: SMA (Surface-Mount Axial), molded plastic case per UL 94V-0, polarity indicated by cathode band marking. Approximate weight: 0.064 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with S2BA-13, 1N4001-T lacks SMT compatibility and thermal performance, while ES1B-13-F trades current capacity for speed - making S2BA-13 optimal for cost-sensitive, thermally constrained 60 Hz rectification where 1.5 A continuous current and 50 A surge immunity are required.

Availability

S2BA-13 is available at Aetrix Electronics and suitable for AC/DC wall adapters, industrial control power supplies, and LED driver input stages requiring stable component supply, consistent RoHS compliance, and verified thermal performance in high-volume manufacturing.

Supply support for S2BA-13 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 and manufacturing operations across Asia and the US.

The S2x/A series belongs to Diodes' general-purpose rectifier product line, engineered specifically for reliable, low-cost AC/DC conversion in consumer, industrial, and appliance power supplies operating at line frequency.

FAQ

What is the maximum allowable PCB copper pad area for thermal performance validation?

The datasheet specifies thermal resistance RJT = 20 °C/W when mounted on 5.0 mm² of 0.013 mm thick copper - this exact pad geometry is required to achieve the rated 1.5 A I(AV) at 100°C terminal temperature. Larger or multi-layer copper improves performance but is not guaranteed in specifications.

Can S2BA-13 be used in capacitive-input filter configurations without derating?

No - the datasheet explicitly requires 20% current derating for capacitive loads due to higher peak currents. At full 1.5 A average rating, the effective usable current drops to 1.2 A when feeding bulk electrolytic capacitors directly after rectification.

Is the cathode band orientation standardized across SMA-packaged Diodes Inc. rectifiers?

Yes - the cathode band is consistently located at the end of the SMA body opposite the anode lead, aligned with industry-standard polarity marking conventions. This matches JEDEC MO-200AB outline and is verified on actual S2BA-13 units shipped in tape-and-reel format.

Does the "-13" suffix indicate tape-and-reel packaging, and what is the reel quantity?

Yes - the "-13" suffix denotes 5000 units per 12 mm tape-and-reel, per Diodes Incorporated's ordering information on page 2 of DS16004 Rev. 9-2. This packaging supports high-speed pick-and-place assembly and is compatible with standard 8 mm feeder systems using carrier tape adapters.