HBAT-5400, 5402, 540B, 540C High Performance Schottky Diodes for Transient Suppression Datasheet

Category: Broadcom Corporation, Diodes, Electronics

Overview of HBAT-54Ox Series High Performance Schottky Diodes

The HBAT-54Ox series, comprising HBAT-5400, HBAT-5402, HBAT-540B, and HBAT-540C, are Schottky diodes designed for transient suppression to protect sensitive circuit elements in high-speed switching environments. These diodes are characterized by their ultra-low series resistance for higher current handling, low capacitance, and rapid response to noise spikes with picosecond switching times.

Key Features of HBAT-54Ox Diodes

The diodes offer critical features for reliable circuit protection, including:

Ultra-low Series Resistance: Facilitating higher current handling without significant loss.
Low Capacitance: Ensuring minimal signal degradation due to waveshape loss.
Lead-free Options: Compliance with RoHS 6, making them suitable for environmentally-conscious applications.

Applications

These diodes are used extensively in applications that require robust protection against electrical transients, such as:

Radio Frequency (RF) shielding
Computer circuit protection
High-speed data line voltage clamping

Absolute Maximum Ratings

The maximum ratings for the HBAT-54Ox series highlight the tolerable limits for operational parameters including:

DC Forward Current: up to 430mA for HBAT-540B/-540C
Peak Surge Current (1us pulse): up to 1.0A for all models
Total Power Dissipation: up to 825mW for HBAT-540B/-540C
Peak Inverse Voltage: 30V for all models
Operating Junction Temperature Range: -65°C to 150°C
Storage Temperature Range: -65°C to 150°C
Thermal Resistance, Junction to Lead: 150°C/W to 500°C/W depending on the model.

Exceeding these ratings could result in permanent damage to the device.

SPICE Modelling

For simulation purposes, this series of diodes has been provided with a set of SPICE parameters for effective modeling:

CJO (Typical Capacitance): 0.08pF
Rs (Series Resistance): Various values depending on the specific model in the series.

Application notes for SPICE model application are available as AN1124 documentation.

Electrical Specifications

Each diode in the HBAT-540x series has detailed electrical specifications laid out, including maximum forward voltage, minimum breakdown voltage, typical series resistance, effective carrier lifetime, and typical capacitance. The diodes are available in SOT-23 and SOT-323 (3-lead SC-70) packages, with part marking lead code identification for ease of use in production and testing.

All specifications provided are based on a standard ambient temperature (TA) of +25°C, which is defined as the temperature at the package pins where contact is made to the circuit board. These specifications are essential for engineers when implementing the diodes into their designs.