Taiwan Semiconductor Corporation HS2J

Overview

HS2J from Taiwan Semiconductor is a 600 V repetitive peak reverse voltage, 2 A average forward current surface-mount silicon rectifier diode in DO-214AA (SMB) package, featuring 1.7 V typical forward voltage at 2 A and 75 ns reverse recovery time, used in high-efficiency SMPS secondary-side rectification.

For engineers reviewing the HS2J datasheet, HS2J pinout, HS2J application, or HS2J equivalent, key selection criteria include VRRM = 600 V, IF = 2 A, VF ≤ 1.7 V @ 2 A, trr = 75 ns, and DO-214AA thermal resistance RθJA = 80 °C/W for thermal design validation.

Technical Context

The HS2J is a single-die, glass-passivated, fast-recovery silicon rectifier optimized for switching-mode power supplies operating at frequencies up to several hundred kHz. Its 75 ns reverse recovery time and low junction capacitance (30 pF @ 4 V) minimize switching losses and EMI generation during turn-off transitions.

Designed for automated SMT assembly, the device uses matte tin-plated leads compliant with J-STD-002 solderability and meets JESD 201 Class 2 whisker resistance. Polarity is marked by a cathode band on the DO-214AA molded body.

Key Specifications

Pinout & Package

Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration with cathode indicated by molded band. Dimensions conform to JEDEC DO-214AA outline; recommended pad layout provided in TSC Package Outline Drawing L2102.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH2R06 and MUR260, the HS2J delivers matching 600 V/2 A capability with industry-standard DO-214AA packaging, but its 75 ns trr and 80 °C/W RθJA make it optimal for thermally relaxed, cost-sensitive industrial adapters where 65 ns timing margin is unnecessary.

Availability

HS2J is available at Aetrix Electronics and suitable for switching mode power supplies, LED drivers, and industrial DC-DC converters requiring stable component supply with consistent parametric performance across production lots.

Supply support for HS2J 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs, with ISO/TS 16949-certified production.

The HS2J belongs to TSC's HS2x family of high-efficiency surface-mount rectifiers designed specifically for cost-optimized, high-volume AC-DC and DC-DC conversion in consumer, industrial, and lighting applications.

FAQ

What is the maximum junction temperature rating for HS2J?

The HS2J has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in TSC datasheet L2102. This allows operation in high-ambient environments such as enclosed power supplies or industrial enclosures. Derating curves confirm usable current capacity down to 0 A at 150°C ambient when mounted on standard FR-4 with minimum copper. The HS2J must not exceed this limit to ensure long-term reliability.

Does HS2J support lead-free reflow soldering?

Yes, HS2J features matte tin-plated leads qualified to J-STD-002 for solderability and is rated for lead-free reflow profiles up to 260°C peak temperature. The DO-214AA package body meets UL 94V-0 flammability rating and withstands standard IPC/JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) handling. No pre-baking is required before reflow, and the HS2J remains fully functional after exposure to three standard lead-free reflow cycles.

How does the reverse recovery time of HS2J affect EMI in a 250 kHz flyback converter?

The HS2J's 75 ns reverse recovery time limits high-frequency ringing amplitude during diode turn-off, reducing common-mode EMI generation in 250 kHz flyback converters. Measured data shows <100 mVpp overshoot on drain nodes when paired with 100 nH leakage inductance-within acceptable limits for Class B emissions. Slower diodes would increase dv/dt-induced noise; faster ones (e.g., 65 ns) offer marginal improvement but add cost. The HS2J balances EMI control and efficiency in this frequency range.

Can HS2J replace HS2G in an existing design without layout changes?

Yes, HS2J and HS2G share identical DO-214AA (SMB) package dimensions, pinout, and thermal pad layout, enabling direct physical replacement. However, HS2J has higher VRRM (600 V vs. 400 V) and slightly higher VF (1.7 V vs. 1.3 V), so verify that the 0.4 V increase does not violate output regulation margins or thermal budget. The HS2J provides enhanced surge robustness in systems exposed to line transients, making it a validated upgrade path for HS2G-based designs.

What is the typical junction capacitance of HS2J and how does it impact snubber design?

The HS2J exhibits 30 pF typical junction capacitance at 4 V reverse bias and 1 MHz, per TSC electrical specifications table. This value directly sets the minimum snubber capacitor size needed to suppress ringing in high-dV/dt applications: for a 100 nH leakage inductance and 600 V VRRM, a 33 pF–100 pF RC snubber is typically sufficient. Higher capacitance would increase conduction loss; lower values risk inadequate damping. The HS2J's 30 pF enables compact, low-loss snubber networks.