Diodes Incorporated SBM1040CT-13-F

Overview

SBM1040CT-13-F from Diodes Incorporated is a 10A dual common-cathode Schottky barrier rectifier in POWERMITE3 package, rated for 40V peak reverse voltage and 0.45V typical forward voltage at 5A/25°C. It delivers low power loss in OR-ing, polarity protection, and low-voltage DC-DC output rectification for industrial power supplies.

For engineers reviewing the SBM1040CT-13-F datasheet, SBM1040CT-13-F pinout, SBM1040CT-13-F application, or SBM1040CT-13-F equivalent, key selection criteria include its 2.5°C/W junction-to-solder-point thermal resistance, 50A non-repetitive surge rating, dual-element configuration, RoHS-compliant lead-free finish, and derating behavior under capacitive loads.

Technical Context

This dual Schottky rectifier integrates two independent anode terminals sharing one cathode terminal (common-cathode topology), enabling synchronous OR-ing and redundant input path management. Its guard-ring die construction enhances transient immunity, while low VF and low IR support high-efficiency operation in 3.3V–12V systems.

The device operates across –55°C to +150°C junction temperature range with 375pF typical junction capacitance per element at 4V reverse bias. Thermal performance is specified relative to soldering point (R_JS = 2.5°C/W), not ambient, requiring PCB-level thermal design per Diodes Inc. AP02001 pad layout guidelines.

Key Specifications

Pinout & Package

Package: POWERMITE3 - surface-mount molded plastic case (UL 94V-0), 3-pin configuration with exposed bottom-side heat sink. Dimensions: 4.03–4.09 mm (A) × 6.40–6.61 mm (B) × 0.864–0.914 mm (C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with PDS1040CTL-13-F, SBM1040CT-13-F offers proven field reliability but higher thermal resistance; versus SS1040-13-F, it provides functional integration and PCB area savings at the cost of fixed topology.

Availability

SBM1040CT-13-F is available at Aetrix Electronics and suitable for industrial power supplies, embedded system OR-ing circuits, and medical device polarity protection requiring stable component supply and long-term lifecycle assurance.

Supply support for SBM1040CT-13-F 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, serving industrial, computing, consumer, and communications markets since 1959.

The POWERMITE3 rectifier product line targets high-current, low-VF surface-mount power conversion applications where thermal efficiency and board-area optimization are critical in space-constrained power stages.

FAQ

What is the maximum operating temperature for SBM1040CT-13-F?

The junction temperature range is –55°C to +150°C, with derated ambient operation above 75°C depending on mounting conditions. At TC = 115°C, the device supports full 10A total current. Thermal design must follow Diodes Inc. AP02001 pad layout to achieve specified RJS = 2.5°C/W.

Is SBM1040CT-13-F pin-compatible with PDS1040CTL-13-F?

No - SBM1040CT-13-F uses POWERMITE3 (3-pin, 4.06×6.51 mm), while PDS1040CTL-13-F uses POWERMITE5 (3-pin, 3.5×4.5 mm) with different pad dimensions and thermal pad geometry. Layout redesign is required for substitution.

Does SBM1040CT-13-F support capacitive load applications?

Yes, but with 20% average current derating per datasheet guidance. For example, at 5A per element with resistive load, limit to 4A per element with capacitive input. This accounts for increased RMS current and thermal stress during charging transients.

What does the "-F" suffix indicate in SBM1040CT-13-F?

The "-F" suffix denotes Diodes Incorporated's lead-free, RoHS-compliant finish per EU Directive 2002/95/EC, with exemptions applied for high-temperature solder and glass. It meets J-STD-020C Level 1 moisture sensitivity and is compatible with standard Pb-free reflow profiles.