What are the key electrical ratings?

It features a 4A hold current, 8A trip current, 24V maximum operating voltage, and can withstand a 40A fault current.

What is the typical application for this device?

It is widely used in automotive, industrial controls, computer peripherals, and battery-powered portable electronics.

How does the PTC function?

The device increases its resistance significantly when current exceeds the trip threshold, effectively limiting the current flow until the fault is removed and the device cools down.

What are the sourcing risks?

The part is currently active and widely available through major distributors, with low supply chain risk for standard production volumes.

What is the pinout of BSMD2920-400-24V?

Use the BSMD2920-400-24V datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about BSMD2920-400-24V pinout to locate pins, power rails, and interface signals before layout.

BSMD2920-400-24V Datasheet, Specs, Alternatives & ECAD | BHFUSE

AI summary

The BSMD2920-400-24V is a robust 2920-sized surface-mount PTC resettable fuse rated for 24V and 4A hold current, ideal for automotive and industrial overcurrent protection.

Best for

Automotive circuits
Industrial control systems
Battery protection

Avoid if

Applications requiring extremely high-speed interruption (use fast-acting fuses instead)

Check before use

Thermal derating at high ambient temperatures

Key specifications

Hold Current: 4A
Trip Current: 8A
Max Voltage: 24V
Package: 2920

Compliance & Environment

RoHS: Compliant
REACH: nan
MSL: nan
ECCN: nan
HTSUS: nan

Application

AutomotiveIndustrialBattery

Datasheet

d33ff4ee1001b0039f13becbeddb4690.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for BSMD2920-400-24V: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

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PCB Footprint

Land pattern for PCB layout

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3D Model

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KiCad Library

Verified KiCad 8 symbol, footprint, and 3D model

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Alternative components

Part	Details	Match
BSMD2920-300-33VBHFUSE	Parametric alternative in the same 2920 package with a higher voltage rating (33V) but a lower hold current (3A).	Needs validation

Design and risk insights

Questions & answers

It is a polymer PTC (Positive Temperature Coefficient) resettable fuse designed for surface-mount (SMT) applications, providing protection against overcurrent faults.

BSMD2920-200-33VBHFUSE	Alternative from the same series with a higher voltage rating (33V) but a significantly lower hold current (2A).	Needs validation
BSMD2920-500-30VBHFUSE	Functional alternate in the same 2920 package with a higher voltage rating (30V) but also a higher hold current (5A).	Needs validation

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Alternative components

Design and risk insights

Questions & answers

What is the BSMD2920-400-24V?+×

What are the key electrical ratings?+×

What is the typical application for this device?+×

How does the PTC function?+×

What are the sourcing risks?+×

What is the pinout of BSMD2920-400-24V?+×