Diodes Incorporated B270BE-13

Overview

B270BE-13 from Diodes Incorporated is a 70 V, 2.0 A surface-mount Schottky barrier rectifier in SMB package, featuring 0.79 V max forward voltage at 2.0 A and 7 µA max reverse leakage at 25°C, optimized for low-loss DC-DC conversion and polarity protection in compact power supplies.

For engineers reviewing the B270BE-13 datasheet, B270BE-13 pinout, B270BE-13 application, or B270BE-13 equivalent, this device is selected for high-frequency freewheeling, reverse polarity blocking, and low-voltage-drop rectification where thermal resistance (R_θJA = 100°C/W) and RoHS-compliant lead-free plating are critical design constraints.

Technical Context

This Schottky rectifier uses guard ring die construction to enhance transient robustness and suppress avalanche-induced failure during inductive switching. Its low forward voltage drop and fast recovery (inherently <10 ns due to majority-carrier conduction) minimize conduction and switching losses in 100 kHz–1 MHz DC-DC topologies.

The SMB package provides improved thermal performance over SMA (R_θJC = 50°C/W), enabling higher sustained current in constrained board space. Reverse leakage remains below 0.4 mA at +125°C, supporting reliable operation in automotive under-hood and industrial ambient environments.

Key Specifications

Pinout & Package

SMB (DO-214AA) surface-mount package with cathode band marking; molded green plastic case (UL 94V-0), matte tin-plated terminals, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS27-E3/57T and SB270-E3/57T, B270BE-13 delivers the lowest forward voltage (0.79 V) and tightest leakage (7 µA) in the 70 V/2 A SMB class, making it optimal for efficiency-critical and thermally constrained 12–24 V power conversion where every 10 mV V_F reduction lowers junction temperature by ~1.2°C at 2 A.

Availability

B270BE-13 is available at Aetrix Electronics and suitable for DC-DC converters, industrial polarity protection circuits, and solar charge controllers requiring stable component supply with full traceability and lifecycle support.

Supply support for B270BE-13 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 the U.S.

The B270BE-13 belongs to Diodes' high-reliability Schottky rectifier product line, engineered for high-efficiency power conversion in industrial, computing, and consumer power supplies where low V_F, low IR, and RoHS/Green compliance are mandatory.

FAQ

What is the maximum junction temperature for continuous operation of B270BE-13?

The B270BE-13 has an absolute maximum junction temperature of +150°C and a storage temperature range of –65°C to +150°C. Under 2.0 A DC load at +25°C ambient, junction temperature rise is ~100°C (2.0 A² × R_θJA ≈ 100°C), reaching ~125°C-well within rating. Derating per Figure 4 is required above +75°C ambient.

Is B270BE-13 suitable for use in automotive under-hood applications?

B270BE-13 operates from –65°C to +150°C and meets AEC-Q200 stress test requirements for passive components when qualified per Diodes' automotive-grade variants (e.g., B270BEQ-13). The standard B270BE-13 is rated for industrial use; for under-hood deployment, confirm qualification status with Diodes' automotive product line documentation.

How does the guard ring construction improve reliability in inductive load switching?

The guard ring die structure distributes electric field gradients at the silicon periphery, preventing premature edge breakdown during voltage transients (e.g., I_FSM = 50 A surge). This eliminates need for external TVS clamping in relay driver and solenoid freewheeling applications, improving system-level robustness without added components.

Can B270BE-13 replace B270AE-13 in existing designs?

Yes-B270BE-13 (SMB) and B270AE-13 (SMA) share identical electrical specs (V_RRM, I_O, V_F, I_R) and polarity marking, but differ mechanically: SMB is larger (4.06–4.57 mm wide vs. 4.00–4.60 mm SMA length) and offers lower R_θJA (100°C/W vs. 110°C/W). PCB footprint and thermal layout must be updated to accommodate SMB dimensions and pad layout per Diodes' outline drawing.