ChipApex | Global Electronic Components Supplier
MF-RM033/240-2
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：PTC RESET FUSE 240V 330MA RADIAL
- Series：Multifuse®, MF-RM
- Mfr：Bourns Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：240V (265V Int)
- Current - Hold (Ih) (Max)：330 mA
- Current - Trip (It)：740 mA
- Current - Max：4.5 A
- Time to Trip：21 s
- Resistance - Initial (Ri) (Min)：770 mOhms
- Resistance - Post Trip (R1) (Max)：2.6 Ohms
- Operating Temperature：-20°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.449" L x 0.150" W (11.40mm x 3.80mm)
- Height - Seated (Max)：0.787" (20.00mm)
- Thickness (Max)：-
- Lead Spacing：0.114" (2.90mm)
Download product information
Overview
The Bourns MF-RM033/240-2 is a resettable PTC thermistor from the Multifuse family, designed for overcurrent protection in electronic circuits. It features a hold current of 0.33A and a trip current of 1.5A, with a maximum voltage rating of 240VAC or 60VDC. The device operates within a temperature range of -40°C to +85°C and utilizes a radial leaded package for through-hole mounting. Its construction includes a polymer composite that increases resistance significantly upon overheating, providing reliable circuit safeguarding without requiring replacement after tripping.
Feature Summary
- Provides automatic circuit recovery after fault clearance without manual intervention
- Offers dual voltage ratings for versatile AC and DC application compatibility
- Utilizes a robust polymer composite core for stable thermal performance
Applications
- Overcurrent protection for portable computing devices
- Surge protection in telecommunications equipment
- Circuit safeguarding in consumer electronics
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct voltage and current ratings. Confirm that the component meets RoHS directives if required by your manufacturing standards. Cross-reference the part number with authorized distributors to validate authenticity and avoid counterfeit components.
Selection Notes
Select this component based on the circuit's normal operating current being below the 0.33A hold current threshold. Ensure the maximum system voltage does not exceed the 240VAC or 60VDC ratings. Consider the ambient temperature environment to guarantee proper thermal operation within the specified -40°C to +85°C range.
Part Context
This part belongs to the Bourns Multifuse series of resettable fuses. These devices are engineered to replace traditional fusible links in various electronic assemblies. The series provides a cost-effective solution for protecting sensitive components from damage caused by excessive current flow.
Replacement Considerations
Consult the official Bourns substitution guide for verified equivalent parts. Do not assume cross-compatibility with other manufacturers' PTC devices without verifying electrical parameters and physical dimensions.
