Diodes Incorporated RS2A-13

Overview

RS2A-13 from Diodes Incorporated is a 1.5A surface-mount fast recovery rectifier diode with 50V peak repetitive reverse voltage (VRRM), 1.3V forward voltage at 1.5A, and 150ns reverse recovery time (trr), designed for high-efficiency AC/DC input stage rectification in compact power supplies and adapters.

For engineers reviewing the RS2A-13 datasheet, RS2A-13 pinout, RS2A-13 application, or RS2A-13 equivalent, key selection criteria include its SMA package thermal resistance (20 K/W), 50A non-repetitive surge rating, glass-passivated die construction, UL 94V-0 flammability rating, and suitability for automated SMT assembly.

Technical Context

This device operates as a unidirectional power switching element in single-phase, half-wave rectifier topologies under resistive or inductive loads at 60Hz. Its fast recovery (150ns) minimizes switching losses in higher-frequency applications up to ~100kHz, while the 1.3V VFM at rated current supports thermal management in space-constrained designs.

The glass-passivated junction ensures stable reverse leakage (5.0µA at 25°C, 200µA at 125°C) and robustness against moisture and contamination. Thermal performance is defined with a 5.0 mm² copper pad heat sink per JEDEC standards, enabling reliable operation up to 150°C junction temperature.

Key Specifications

Pinout & Package

RS2A-13 is housed in an SMA (DO-214AC) surface-mount plastic package with cathode band polarity marking. The device has two terminals: anode and cathode, with no internal connections beyond the rectifying junction.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1L06U and MBR150, RS2A-13 uniquely balances 50V blocking, 1.5A current, 150ns recovery, and SMA surface-mount compatibility for cost-sensitive, thermally constrained AC/DC inputs where Schottky leakage or higher-voltage packages are unsuitable.

Availability

RS2A-13 is available at Aetrix Electronics and suitable for AC/DC wall adapters, industrial power supplies, USB-C PD chargers, and LED driver input stages requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for RS2A-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, specializing in high-reliability, application-optimized components for power management, signal integrity, and protection.

RS2A-13 belongs to the RS2x/A fast recovery rectifier product line, engineered specifically for high-efficiency, compact AC/DC conversion in consumer and industrial power supplies where thermal performance and surge robustness are critical.

FAQ

What is the maximum allowable junction temperature for RS2A-13?

The absolute maximum junction temperature is +150°C, as specified in the datasheet. Operation above this limit risks permanent degradation of the glass-passivated junction. Derating curves show that average forward current must be reduced to 1.0A at 125°C terminal temperature, and to zero at 150°C, assuming standard PCB mounting conditions.

Can RS2A-13 replace a standard PN junction rectifier like 1N4001 in a new design?

Yes, RS2A-13 can replace 1N4001 in most 50V-rated applications, offering significantly faster recovery (150ns vs. ~30µs), lower forward voltage (1.3V vs. ~1.1V at low current but higher at 1.5A), and superior surge capability (50A vs. 30A). However, its SMA package requires SMT assembly and differs mechanically from DO-41.

Is RS2A-13 suitable for use in a synchronous rectification circuit?

No - RS2A-13 is a passive silicon PN junction diode and cannot be actively controlled. It lacks gate drive capability and is not intended for synchronous rectification, which requires MOSFETs with gate control. It functions only as a self-commutated, unidirectional rectifier in conventional hard-switched topologies.

Does RS2A-13 meet lead-free and RoHS requirements?

Yes - RS2A-13 is manufactured with lead-free terminations and complies with EU RoHS Directive 2011/65/EU and China RoHS. The device carries the "Pb-Free" marking per Diodes Incorporated's standard coding, and all materials-including molding compound and die attach-meet homogeneous material restrictions for cadmium, mercury, hexavalent chromium, PBB, PBDE, and phthalates.