Taiwan Semiconductor Corporation RS2JAL

Overview

RS2JAL from Taiwan Semiconductor is a 2 A, 600 V fast recovery surface-mount rectifier diode in Thin SMA package, featuring 250 ns reverse recovery time, 11 pF junction capacitance at 1 MHz/4 V, and 175 °C maximum junction temperature. It serves as primary output rectifier in DC-DC converters and switching inverters requiring high efficiency and thermal robustness.

For engineers reviewing the RS2JAL datasheet, RS2JAL pinout, RS2JAL application, or RS2JAL equivalent, key selection criteria include its 600 V V_RRM, 250 ns trr performance under 0.5 A forward / 1.0 A reverse conditions, VF of 1.01 V at 2 A/25 °C, and compatibility with automated SMT placement on J-STD-020 Level 1 moisture-sensitive boards.

Technical Context

The RS2JAL employs a glass-passivated silicon junction optimized for fast recovery in high-frequency switching topologies. Its single-die configuration delivers low conduction loss (VF ≤ 1.01 V @ 2 A) and controlled reverse recovery charge (trr = 250 ns), enabling efficient operation in 100–500 kHz SMPS designs.

Thermal design is supported by R_θJL = 16 °C/W and R_θJA = 73 °C/W on a 5 mm × 5 mm Cu pad, allowing sustained 2 A average current at ambient up to 85 °C without forced cooling. The cathode-band polarity marking ensures unambiguous orientation during automated assembly.

Key Specifications

Pinout & Package

Package: Thin SMA (JEDEC DO-221AC variation), low-profile surface-mount package with matte tin-plated leads, moisture sensitivity level 1 per J-STD-020, and cathode polarity indicated by band.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH2R06 and ES2J, the RS2JAL balances moderate trr (250 ns), low VF (1.01 V), and SMT-ready Thin SMA packaging-making it optimal for cost-sensitive, space-constrained 100–300 kHz industrial power supplies where thermal and EMI trade-offs favor mid-range recovery performance.

Availability

RS2JAL is available at Aetrix Electronics and suitable for DC-DC converters, switching mode inverters, and general-purpose rectification requiring stable component supply, consistent parametric performance across production lots, and long-term lifecycle support.

Supply support for RS2JAL 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and consumer markets since 1979.

The RS2JAL belongs to TSC's RS2xAL fast recovery rectifier family, designed specifically for high-efficiency, surface-mount power conversion stages where thermal resilience, SMT compatibility, and balanced speed-loss trade-offs are critical.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for RS2JAL?

The RS2JAL has a V_RRM rating of 600 V, verified per Taiwan Semiconductor's C2304 datasheet. This value defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown. Engineers must ensure system-level transients remain below this rating, including safety margins for line surges and switching overshoot. The RS2JAL is not rated for 800 V or higher reverse stress.

What is the forward voltage (V_F) of RS2JAL at 2 A and 25 °C?

The RS2JAL exhibits a typical forward voltage of 1.01 V at 2 A and 25 °C, with a maximum of 1.30 V under the same conditions. This parameter directly impacts conduction loss and thermal rise in the rectifier stage. At elevated junction temperatures (e.g., 125 °C), V_F drops to 0.88 V typical, reflecting the negative temperature coefficient of silicon PN junctions. The RS2JAL datasheet specifies test conditions using 0.3 ms pulse width to avoid self-heating.

Does RS2JAL have a specified reverse recovery time (t_rr)?

Yes, the RS2JAL has a specified t_rr of 250 ns under test conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This value is measured per JEDEC standards and distinguishes RS2JAL from lower-voltage variants (e.g., RS2DAL at 150 ns) and higher-voltage variants (e.g., RS2KAL at 500 ns). The t_rr directly influences switching loss and EMI generation in high-frequency topologies.

What package type does RS2JAL use, and is it moisture-sensitive?

The RS2JAL uses the Thin SMA package (JEDEC DO-221AC variation), with matte tin-plated leads and a glass-passivated die. It is classified as Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30 °C/85 % RH without baking prior to reflow. The cathode is marked by a visible band, and the package weight is approximately 0.029 g. No dry pack or floor life restrictions apply to RS2JAL.

What is the maximum junction temperature (T_J) rating for RS2JAL?

The RS2JAL has a maximum junction temperature rating of +175 °C, confirmed in the Absolute Maximum Ratings table of the C2304 datasheet. This allows operation in high-ambient industrial environments when mounted on a 5 mm × 5 mm copper pad (R_θJA = 73 °C/W). Derating curves show usable average forward current remains ≥2 A up to 85 °C ambient, assuming natural convection. Exceeding 175 °C risks permanent parametric shift or failure of the RS2JAL.