What are the key features of Littelfuse Inc 1812L125?

This product belongs to the General Purpose category and ships in standard packaging. It features high reliability, stable performance and low power consumption. Key parameters include wide operating range, low loss, and over-temperature protection, suitable for industrial applications. Manufactured by Littelfuse Inc with full traceability.

What are the main application scenarios for 1812L125?

Typical applications include power management, industrial control. Additionally, it is widely used in automotive electronics, telecom infrastructure, medical devices, and consumer electronics as a critical circuit component, improving system integration and energy efficiency.

How does 1812L125 work?

This device follows established General Purpose design principles. Core functional stages include input handling, signal and power processing, and protection logic, ensuring stable operation under varying conditions. Refer to the datasheet for the detailed characteristics and application guidance.

What is the technical performance of 1812L125?

Performance highlights: stable characteristics across the operating temperature range, low loss, and long service life. Reliable contact and shock resistance, with protection against over-current and over-voltage where applicable. Meets industrial and automotive reliability standards where the series qualifies.

What is the current market demand for 1812L125?

The global General Purpose market is growing at ~6-8% CAGR, with particularly strong demand in power management. Littelfuse Inc 1812L125 is a mainstream model with stable stock and a typical lead time of 2-4 weeks. Driven by new energy and smart electronics trends, inquiries for this model are steadily increasing, indicating a positive long-term outlook.

What are the technical characteristics of 1812L125?

Three main technical features: 1) High reliability – stable performance over the rated life; 2) Low-loss design – reduced energy loss in operation; 3) Wide adaptability – compatible with various operating conditions. Additionally, Littelfuse Inc provides full technical support and reference designs.

1812L125 Resettable Fuses - PPTC 6V 1.25A-HD 40A MAX by Littelfuse Inc

1812L125 | Littelfuse Inc Resettable Fuses - PPTC 6V 1.25A-HD 40A MAX

Category: General Purpose

Brand: Littelfuse Inc

Resettable Fuses - PPTC 6V 1.25A-HD 40A MAX

Stock: On request

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Product Details

PDF Datasheet

Technical Docs

Description: Resettable Fuses - PPTC 6V 1.25A-HD 40A MAX

Technical Parameters

Application	Overcurrent Protection
Brand	Littelfuse Inc
Data Tier	Family Level
ECCN	EAR99
Halogen Free	Yes
Hold Current	1.25 A
Max Current	100 A
Max Voltage	8 V
Mounting Type	Surface Mount
Operating Temperature	-40 to +85 C
Package / Case	1812
Packaging	Tape & Reel
Product Type	PTC Resettable Fuse
REACH	Compliant
RoHS	Compliant
Series	1812L
Trip Current	1.25 A

Standard Packaging: Standard packaging refers to the minimum packaging quantity obtained from the manufacturer/distributor. Therefore, the minimum order quantity may be less than the manufacturer's standard packaging quantity. When products are broken down into smaller quantities, the packaging type (i.e., reel, tube, tray) may change, subject to actual packaging delivery.

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PCB Footprint (.pcb)

3D Model (.stp)

Schematic Symbol (.sch)

DXF Drawing

1812L125 Application and Selection Guide

1812L125 Model and Manufacturer Information

1812L125, a General Purpose manufactured by Littelfuse Inc: 1812L125 helps you confirm the specific model, while Littelfuse Inc helps you confirm the product source. If you are selecting a part, you can first check whether 1812L125 meets your requirements, then check whether Littelfuse Inc matches your expectations, and then refer to Resettable Fuses - PPTC 6V 1.25A-HD 40A MAX for further evaluation.

1812L125 Product Parameters and Description

The main parameters of Littelfuse Inc's General Purpose product 1812L125 include Resettable Fuses - PPTC 6V 1.25A-HD 40A MAX. This is a General Purpose produced by Littelfuse Inc, and it also offers good applicability in embedded systems, common 3C electronics, automotive electronics, electronic devices, and IoT devices.

1812L125 Application and Selection Reference

Littelfuse Inc's General Purpose product 1812L125 has a relatively wide range of applications in embedded systems, common 3C electronics, automotive electronics, electronic devices, and IoT devices. Overall, 1812L125 is a General Purpose solution worth considering, and manufacturer Littelfuse Inc provides long-term supply program support for this product, which helps ensure supply continuity during mass production.

Recommended Part Numbers for 1812L125

Designers looking for 1812L125 recommended parts can evaluate the following options. 1812L125 selection decisions should verify parameters, tolerance and packaging against the original design bill of materials.

Recommended Part	Brand	Description
1812L160/12DR	Littelfuse Inc	最大电压：12V 最大电流：100A 保持电流：1.6A 跳闸电流：2.8A 初始态阻值(最小值)：30mΩ 跳断后阻值(最大值)：100mΩ 最大动作时间：1s
V5.5MLA0402NR	Littelfuse Inc	Var MLV 4VAC/5.5VDC 20A 10.8V 0402 SMD T/R
SMBJ6V0CA	Littelfuse Inc	TVS DIODE 6VWM 10.3VC DO214AA

EZKEY can provide 1812L125 recommended part comparison data and engineering samples for evaluation.