MF-SMDF100/33X-2

$0.79

Description：PTC RESETTABLE 1.1A 33V SMD 2018
Series：Multifuse®, MF-SMDF
Mfr：Bourns Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:7c0a13b8e979 Category: PTC Resettable Fuses Brand: Bourns Inc.

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Product introduction

Product Detailed Parameters

Description：PTC RESETTABLE 1.1A 33V SMD 2018
Series：Multifuse®, MF-SMDF
Mfr：Bourns Inc.
Package：Tape & Reel (TR),Cut Tape (CT)
Type：Polymeric
Voltage - Max：33V
Current - Hold (Ih) (Max)：1.1 A
Current - Trip (It)：2.2 A
Current - Max：40 A
Time to Trip：500 ms
Resistance - Initial (Ri) (Min)：60 mOhms
Resistance - Post Trip (R1) (Max)：400 mOhms
Operating Temperature：-40°C ~ 85°C
Grade：-
Qualification：-
Ratings：-
Mounting Type：Surface Mount
Package / Case：2018 (5045 Metric), Concave
Size / Dimension：0.200" L x 0.180" W (5.08mm x 4.58mm)
Height - Seated (Max)：-
Thickness (Max)：0.049" (1.25mm)
Lead Spacing：-

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MF-SMDF100/33X-2

Overview

The MF-SMDF100/33X-2 is a polymeric resettable fuse from the Bourns Multifuse SMDF series, designed for surface mount applications in the 2018 (5045 metric) package. It features a hold current of 1.1 A and a trip current of 1.65 A, with a maximum voltage rating of 33 VDC. The device exhibits an initial resistance minimum of 60 mOhms and a post-trip resistance maximum of 400 mOhms. It operates within a temperature range of -40°C to 85°C and supports a maximum current of 40 A, with a typical time to trip of 500 ms.

Feature Summary

Polymeric positive temperature coefficient construction for overcurrent protection
Surface mount design compatible with automated assembly processes
Self-resetting functionality eliminates need for manual replacement after fault clearance

Applications

Portable electronic devices requiring compact circuit protection
Consumer electronics circuits needing surface mount overcurrent safeguards
Industrial control systems utilizing low-voltage DC power distribution

Procurement Notes

Verify component authenticity through authorized Bourns distributors or certified supply chain partners. Confirm RoHS3 compliance and REACH status against current regulatory requirements. Validate datasheet revisions and ordering suffixes to ensure exact electrical parameter matching for critical designs.

Selection Notes

Select this component based on specific voltage and current ratings required by the target circuit topology. Evaluate thermal management constraints given the operating temperature limits and self-heating characteristics inherent to PTC devices. Ensure physical footprint compatibility with existing PCB layout dimensions and soldering profiles.

Part Context

This part belongs to the Multifuse SMDF series, representing Bourns' surface mount polymeric resettable fuses. The series provides reliable overcurrent protection solutions for modern electronics manufacturing where space efficiency and reworkability are prioritized over traditional one-time fuse implementations.