Diodes Incorporated SBL3060CT

Overview

SBL3060CT from Diodes Incorporated is a 30A, 60V dual common-cathode Schottky barrier rectifier in TO-220AB package, designed for high-efficiency low-voltage DC output stages in SMPS and DC-DC converters. It features 0.70V forward voltage at 15A/25°C, 250A non-repetitive surge capability, 2.5°C/W junction-to-case thermal resistance, and UL 94V-0 flammability-rated molding compound.

For engineers reviewing the SBL3060CT datasheet, SBL3060CT pinout, SBL3060CT application, or SBL3060CT equivalent, key selection criteria include forward voltage drop at operating current, thermal derating behavior above 100°C case temperature, reverse leakage at elevated junction temperature, and mechanical mounting compatibility with standard TO-220 heatsinks.

Technical Context

This dual common-cathode Schottky rectifier uses guard-ringed die construction to enhance transient robustness without compromising low V_F. Its monolithic dual-die configuration shares a single cathode terminal (Pin 2), enabling synchronous half-bridge or dual-output configurations with minimized layout parasitics.

The device operates within –65°C to +150°C junction temperature range and exhibits 420pF typical junction capacitance at 4V reverse bias and 1MHz-critical for EMI filtering in high-frequency switching topologies like LLC resonant converters.

Key Specifications

Pinout & Package

Package: TO-220AB, 3-terminal molded plastic case with plated leads, UL 94V-0 rated, weight 2.24 g. Mounting position unrestricted; polarity marked on body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-30CPH06-M3 and MBR30H60CT, the SBL3060CT offers the lowest thermal resistance (2.5°C/W) in TO-220AB, enabling higher power density in natural-convection designs, while maintaining tighter V_F consistency across production lots.

Availability

SBL3060CT is available at Aetrix Electronics and suitable for server VRMs, industrial PLC power supplies, telecom rectifier modules, and EV onboard charger auxiliary supplies requiring stable component supply and long-term lifecycle support.

Supply support for SBL3060CT 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, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and Germany.

The SBL30xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical secondary-side rectification in high-frequency switched-mode power supplies up to 500kHz.

FAQ

What is the maximum allowable case temperature for continuous 30A operation?

The SBL3060CT is rated for 30A average rectified current only at T_C = 100°C, as specified in Figure 1 of the datasheet. Operation at full current above 100°C requires derating per the forward derating curve-e.g., 24A at 110°C, 18A at 125°C. Exceeding this without thermal margin risks accelerated parametric drift and premature failure.

Can Pin 1 and Pin 3 be paralleled to increase current capacity?

No-Pin 1 and Pin 3 are separate anodes connected to independent Schottky dies sharing Pin 2 (common cathode). Paralleling them electrically creates unbalanced current sharing due to V_F mismatch and thermal coupling, risking thermal runaway. For higher current, use multiple SBL3060CT units with individual thermal paths and current-sharing resistors.

Is the SBL3060CT suitable for reverse-polarity protection in automotive 12V systems?

Yes-the 60V V_RRM provides 3× margin over 12V nominal systems and accommodates load-dump transients up to ISO 7637-2 Pulse 5a (±60V). Its low 0.70V V_F limits power dissipation to ≤10.5W at 15A, making it viable for fuse-protected circuits where thermal mass prevents overheating during short-duration faults.

Does the guard ring structure affect switching speed or capacitance?

The guard ring is a passive edge termination that suppresses surface leakage and improves ruggedness without altering the active junction's physical dimensions. Measured junction capacitance remains 420pF at 4V reverse bias-identical to non-guarded equivalents-ensuring no impact on turn-off time or high-frequency EMI performance in hard-switched topologies.