Taiwan Semiconductor Corporation SR306 A0G

Overview

SR306 A0G from Taiwan Semiconductor is a 3A, 60V Schottky barrier rectifier in DO-201AD package, featuring low forward voltage (0.70 V max at 3A, 25°C), 80A surge capability, and 500 µA max reverse leakage at 25°C. It serves as primary output rectifier in compact DC/DC converters and AC/DC adapters.

For engineers reviewing the SR306 A0G datasheet, SR306 A0G pinout, SR306 A0G application, or SR306 A0G equivalent, key selection criteria include its 60V VRRM rating, thermal resistance (R_θJA = 50°C/W), AEC-Q101 qualification option (via H-suffix variants), and DO-201AD mechanical compatibility with high-reliability power supplies.

Technical Context

This device operates as a single-die, unidirectional Schottky rectifier optimized for high-frequency switching topologies. Its 10,000 V/µs dv/dt rating supports fast-switching SMPS designs, while junction temperature range of –55°C to +125°C enables operation in industrial ambient conditions.

Thermal performance is defined by R_θJC = 15°C/W and R_θJA = 50°C/W under standard JEDEC test conditions. Reverse leakage remains ≤500 µA at 25°C and ≤5 mA at 100°C, supporting stable operation across temperature gradients in enclosed power modules.

Key Specifications

Pinout & Package

DO-201AD axial-leaded package with cathode band marking; leads are pure tin-plated, solderable per J-STD-002, and pass JESD201 Class 2 whisker testing. Weight ≈1.10 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SR306 A0G, VS-3EY60-M3/57T offers tighter reverse leakage but less robust lead finish for high-volume automated assembly, while SB360-E3/57T trades 5°C/W higher R_θJA for broader long-term supply assurance in automotive-tier sourcing.

Availability

SR306 A0G is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and AC/DC adapters requiring stable component supply with consistent DO-201AD mechanical form factor and 60V/3A performance.

Supply support for SR306 A0G 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 management and automotive electronics markets since 1979.

The SR302–SR320 series was designed specifically for high-efficiency, cost-sensitive rectification in consumer and industrial power supplies, emphasizing low V_F, rugged surge capability, and standardized DO-201AD packaging for automated assembly.

FAQ

What is the maximum junction temperature rating for SR306 A0G?

The SR306 A0G has a maximum junction temperature (T_J) of +125°C under continuous operation. This rating is validated per the absolute maximum ratings table in the official TSC datasheet (Version J2105), and applies across the full operating current range up to 3A. Derating is required above 25°C ambient per the forward current derating curve shown in Figure 1.

Does SR306 A0G meet AEC-Q101 requirements?

The SR306 A0G itself is not AEC-Q101 qualified; only the H-suffix variants (e.g., SR306H or SR306HA0G) carry that qualification. The A0G suffix denotes 500-unit ammo box packaging, not stress qualification. For automotive applications requiring AEC-Q101, specify SR306HA0G and confirm qualification status via TSC's official product change notices.

What is the forward voltage specification for SR306 A0G at 3A and 100°C junction temperature?

The SR306 A0G datasheet specifies V_F only at T_J = 25°C (max 0.70 V). No typ/max value is provided at 100°C - however, the typical forward characteristics curve (Figure 4) shows V_F ≈ 0.62 V at 3A and 100°C for the SR305–SR306 group. Designers should apply conservative derating and verify with actual thermal modeling.

Is SR306 A0G compatible with lead-free reflow soldering processes?

Yes - SR306 A0G features pure tin-plated leads compliant with J-STD-002 and rated for standard lead-free reflow profiles (peak ≤260°C, 10-second dwell). The DO-201AD package molding compound meets UL 94V-0, ensuring process stability and flammability compliance during manufacturing.

How does the reverse leakage current of SR306 A0G behave at elevated temperatures?

Per the electrical specifications table, SR306 A0G exhibits ≤500 µA I_R at 25°C and ≤5 mA at 100°C under rated V_R. At 125°C, leakage is unspecified in the datasheet, but the typical reverse characteristics curve (Figure 3) indicates ~8–10 mA for SR305–SR306 devices at 60V and 125°C - a critical consideration for standby power budgeting.