MF-SM100/33-2-99

$0.76

Description：PTC RESET FUSE 33V 1.1A 2SMD
Series：Multifuse®, MF-SM
Mfr：Bourns Inc.
Package：Tape & Reel (TR),Cut Tape (CT)

SKU:fc9568755fbc Category: PTC Resettable Fuses Brand: Bourns Inc.

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Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 33V 1.1A 2SMD
Series：Multifuse®, MF-SM
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)：120 mOhms
Resistance - Post Trip (R1) (Max)：410 mOhms
Operating Temperature：-40°C ~ 85°C
Grade：Automotive
Qualification：AEC-Q200
Ratings：-
Mounting Type：Surface Mount
Package / Case：2-SMD
Size / Dimension：0.287" L x 0.214" W (7.31mm x 5.44mm)
Height - Seated (Max)：-
Thickness (Max)：0.118" (3.00mm)
Lead Spacing：-

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MF-SM100/33-2-99

Overview

The MF-SM100/33-2-99 is a polymeric PTC resettable fuse from the MF-SM series, designed for surface-mount circuit protection. It features a hold current of 1.1 A and a trip current of 2.2 A at maximum voltage of 30 VDC. The device has a maximum rated current of 40 A and an initial resistance of 250 mOhms. It operates within a temperature range of -40°C to +85°C and is housed in a compact 1210 (3225 metric) SMD package.

Feature Summary

Polymeric positive temperature coefficient construction for automatic reset capability after fault clearance
Surface-mount design optimized for automated assembly processes
Compact footprint suitable for high-density PCB layouts

Applications

Portable electronic devices requiring overcurrent protection
Consumer electronics circuits
Industrial control systems

Procurement Notes

Verify component status carefully as this specific part number is listed as obsolete and no longer manufactured by Bourns Inc. Procurement should focus on authorized distributors offering remaining stock or approved substitute components. Ensure compatibility with existing board designs when selecting alternatives.

Selection Notes

Select replacement options based on matching electrical parameters such as hold current, trip current, and maximum voltage rating. Consider physical package dimensions to ensure fit within the original footprint. Evaluate thermal characteristics and response time requirements against the application's specific protection needs before finalizing substitution.

Part Context

This component belongs to the MF-SM series of self-recovery fuses produced by Bourns Inc. The series offers various current and voltage ratings tailored for different circuit protection scenarios. The MF-SM100/33-2-99 specifically targets applications needing moderate current protection in a small surface-mount form factor.

Replacement Considerations

Direct substitutes include Littelfuse Inc. SMD100F/33-2. Verify that alternative parts meet identical electrical specifications and mechanical constraints to maintain circuit integrity.

How to buy

Online and offline orders are supported. If the item is available for online purchase, you can place it in the cart; for wholesale pricing, please contact our product manager for a quote.

Payment Method

Payment methods: T/T, WeChat Pay, credit cards, Google Pay, Apple Pay . Buyer covers shipping, fees, duties, and taxes; contact our product manager if you need a contract/procurement process.

Delivery time

In-stock items usually ship within 24 hours. Otherwise, shipment is arranged 1 to 2 days after the items arrive at our warehouse. Timing depends on destination and shipping method.

Freight calculation

Freight cost depends on destination, package size, and weight . We offer shipping options via DHL, FedEx, UPS, and TNT , and can ship using your freight account upon request.

Mode of Transportation

We ship via DHL, FedEx, UPS, and TNT. If you prefer a specific logistics provider, we can ship using your designated carrier.

Return and Refund

Returns are accepted within 60 days of invoice with RMA approval. Items must be resalable; original invoice and test report are required. No returns for customer errors.