Taiwan Semiconductor Corporation PU2DLS

Overview

PU2DLS from Taiwan Semiconductor is a 2 A, 200 V ultra-fast surface-mount rectifier in SOD-123HE package, featuring 25 ns reverse recovery time, 0.93 V max forward voltage at 2 A/25°C, and 175°C maximum junction temperature-designed for high-frequency switching in DC/DC converters and snubber circuits.

For engineers reviewing the PU2DLS datasheet, PU2DLS pinout, PU2DLS application, or PU2DLS equivalent, key selection criteria include its 200 V repetitive peak reverse voltage, 50 A surge current rating, low 31 pF junction capacitance, thermal resistance of 14 °C/W (junction-to-lead), and RoHS/halogen-free compliance for automated SMT assembly.

Technical Context

The PU2DLS employs planar silicon technology to achieve ultra-fast switching with controlled reverse recovery characteristics. Its 25 ns trr (IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A) and 31 nC Qrr support high-efficiency operation in hard-switched topologies.

Thermally, it delivers R_θJL = 14 °C/W and R_θJA = 79 °C/W on a 5 mm × 5 mm Cu pad, enabling reliable 2 A continuous conduction at elevated ambient temperatures up to 125°C with derating.

Key Specifications

Pinout & Package

Package: SOD-123HE - ultra-compact surface-mount plastic case (2.7 mm × 1.6 mm × 1.1 mm), matte tin-plated leads, moisture sensitivity level 1, UL 94V-0 rated molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH2R02 and ES2D, the PU2DLS offers the lowest t_rr (25 ns) and V_F (0.93 V) in SOD-123HE, delivering superior high-frequency efficiency and minimal board space-critical for space-constrained 2 A DC/DC outputs.

Availability

PU2DLS is available at Aetrix Electronics and suitable for high-frequency switching, DC/DC converter output rectification, and snubber circuit applications requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.

Supply support for PU2DLS 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 global power, automotive, and industrial markets since 1979.

The PU2DLS belongs to TSC's PU2xLS ultra-fast rectifier family, engineered specifically for high-efficiency, high-frequency power conversion where low Q_rr, tight V_F distribution, and SMT scalability are critical.

FAQ

What is the maximum repetitive peak reverse voltage rating for PU2DLS?

The PU2DLS has a specified V_RRM of 200 V, verified per Taiwan Semiconductor's A2210 datasheet revision. This rating ensures safe operation under transient reverse bias up to 200 V in continuous switching applications such as DC/DC converters and snubbers. Exceeding this voltage risks avalanche breakdown and permanent device failure. The PU2DLS must be selected with appropriate voltage derating margins-typically ≥20%-in systems with voltage spikes or ringing.

Does PU2DLS have a documented reverse recovery time, and under what test conditions?

Yes, the PU2DLS specifies a maximum reverse recovery time (t_rr) of 25 ns, measured under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the official A2210 datasheet. An alternate condition yields 30 ns (IF = 1.0 A, di/dt = 50 A/µs, VR = 30 V). These values confirm the PU2DLS is optimized for high-frequency switching, distinguishing it from standard recovery rectifiers. Designers should reference the PU2DLS t_rr when calculating switching losses in topologies above 100 kHz.

Is PU2DLS compatible with lead-free reflow soldering processes?

Yes, the PU2DLS features matte tin-plated leads qualified per J-STD-002 for solderability and complies with RoHS and halogen-free standards (IEC 61249-2-21). Its SOD-123HE package is rated for moisture sensitivity level 1 (MSL-1), meaning it can be stored indefinitely at ≤30°C/60% RH and withstand standard lead-free reflow profiles-including peak temperatures up to 260°C-without preconditioning. This makes PU2DLS fully compatible with modern automated SMT lines.

What is the thermal resistance from junction to lead (R_θJL) for PU2DLS, and how does it impact heatsinking?

The PU2DLS has a typical R_θJL of 14 °C/W, measured with the device mounted on a 5 mm × 5 mm copper pad per JEDEC standards. This low value indicates efficient heat transfer from the die directly into the PCB copper, allowing effective passive cooling without dedicated heatsinks. In practice, this enables sustained 2 A operation at ambient temperatures up to 85°C in well-designed layouts-critical for compact DC/DC modules where the PU2DLS serves as the main output rectifier.

How does the forward voltage of PU2DLS vary with temperature and current?

The PU2DLS exhibits a negative temperature coefficient for forward voltage: at 2 A, V_F drops from 0.87 V (typical) at 25°C to 0.73 V at 125°C. This behavior reduces conduction loss at elevated temperatures, improving thermal stability. The datasheet confirms V_F ≤ 0.93 V at 2 A/25°C and ≤ 0.73 V at 2 A/125°C. Designers using PU2DLS in thermally demanding applications-such as enclosed industrial power supplies-can rely on this characteristic to maintain efficiency across the full -55°C to +175°C junction range.