Diodes Incorporated GBP310

Overview

GBP310 from Diodes Incorporated is a 3A standard recovery bridge rectifier with 1000V peak repetitive reverse voltage (VRRM), 1.05V max forward voltage at 1.5A, and 5µA max reverse leakage current at 25°C. It features glass-passivated die construction, UL 94V-0 plastic package, and is rated for operation from –55°C to +150°C. It is used in AC/DC power supplies for industrial control panels requiring robust, board-mountable rectification.

For engineers reviewing the GBP310 datasheet, GBP310 pinout, GBP310 application, or GBP310 equivalent, key selection criteria include its 1000V blocking capability, thermal resistance (RthJC = 9°C/W), surge rating (90A IFSM at 8.3ms), and compatibility with PCB mounting without heatsink up to 1.8A average current.

Technical Context

This device implements a single-phase full-wave bridge configuration using four series-connected standard-recovery diodes in a monolithic molded GBP package. Its glass passivation ensures stable junction characteristics under thermal cycling and humidity stress.

The GBP310 operates with a typical junction capacitance of 25pF at 1MHz/4V and exhibits defined derating behavior: average forward current drops from 3.0A at TC = 100°C (with heatsink) to 1.8A at same temperature without heatsink.

Key Specifications

Pinout & Package

Package: GBP - 4-terminal molded plastic bridge rectifier with matte tin-plated leads, UL 94V-0 rated, weight ≈1.33 g. Polarity indicator symbol molded on body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with GBU10K and GBPC310, GBP310 delivers optimal balance of current rating, thermal resistance (9°C/W), and compact GBP footprint-making it ideal for cost-sensitive, space-limited industrial power supplies needing precise 3A capability.

Availability

GBP310 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, motor drive front-end rectification, and uninterruptible power supply (UPS) input stages requiring stable component supply and long lifecycle support.

Supply support for GBP310 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, manufacturing, and sales operations across Asia, Europe, and the Americas.

The GBP310 belongs to Diodes' standard recovery bridge rectifier product line, engineered for reliable, cost-effective AC/DC conversion in industrial, automation, and power infrastructure applications.

FAQ

What is the maximum junction temperature for GBP310?

The GBP310 has a specified operating junction temperature range of –55°C to +150°C. This allows operation in high-ambient environments such as enclosed industrial cabinets or near heat-generating components. Derating curves in the datasheet define safe current limits at elevated temperatures, and thermal resistance values (RthJC = 9°C/W) enable accurate junction temperature estimation under load.

Is GBP310 suitable for automotive applications?

The GBP310 is not AEC-Q101 qualified and is not recommended for automotive safety-critical systems. While it meets RoHS and halogen-free requirements, Diodes explicitly states that automotive-grade parts require PPAP capability and IATF 16949 manufacturing-conditions not guaranteed for standard GBP310. For automotive use, contact Diodes for AEC-qualified alternatives like the GBU10K-A or GBPC310-A variants.

How does GBP310 compare to fast recovery bridges in switching power supplies?

GBP310 uses standard recovery diodes with ~2.5µs reverse recovery time (inferred from typical recovery behavior at 1.5A), making it unsuitable for high-frequency (>20kHz) SMPS where fast or ultrafast recovery is required. It is optimized for line-frequency (50/60Hz) rectification in linear and quasi-resonant supplies. Using it in high-frequency converters increases switching losses and EMI due to slow recovery tail current.

Can GBP310 be mounted without a heatsink?

Yes-GBP310 can operate without a heatsink up to 1.8A average forward current at TC = +100°C, per its derating curve. However, sustained operation above 1.0A without heatsinking requires careful PCB copper area design (e.g., ≥30mm × 30mm × 1mm Cu plate) to maintain junction temperature within limits. For 3.0A continuous operation, a heatsink is mandatory.