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FSMD125-16R is listed in the Ptc Resettable Fuses range at ChipApex. The manufacturer field lists RFE/Fuzetec. Its product description is RESETTABLE FUSE - SMD, 1812 SIZE. Review the specifications below when checking this part for your BOM.
Ptc Resettable Fuses specifications for FSMD125-16R
- Description：RESETTABLE FUSE - SMD, 1812 SIZE
- Series：FSMD1812
- Mfr：RFE/Fuzetec
- Package：Tape & Reel (TR)
- Type：-
- Voltage - Max：16V
- Current - Hold (Ih) (Max)：1.25 A
- Current - Trip (It)：2.5 A
- Current - Max：100 A
- Time to Trip：400 ms
- Resistance - Initial (Ri) (Min)：50 mOhms
- Resistance - Post Trip (R1) (Max)：140 mOhms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：1812 (4532 Metric), Concave
- Size / Dimension：0.179" L x 0.128" W (4.55mm x 3.24mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.039" (1.00mm)
- Lead Spacing：-
Ptc Resettable Fuses datasheet and documents for FSMD125-16R
Ptc Resettable Fuses Overview
The FSMD125-16R is a surface mount PTC resettable fuse manufactured by RFE/Fuzetec. It features an 1812 (4532 Metric) concave package designed for circuit protection against overcurrent and short circuit conditions. The device has a maximum voltage rating of 16V and a hold current of 1.25 A. Key electrical parameters include a trip time of 400 ms and a maximum current capacity of 100 A.
Ptc Resettable Fuses Feature Summary
- Provides automatic circuit protection against overcurrent and short circuit conditions
- Features a surface mount design with a concave profile for compatibility with automated assembly processes
Ptc Resettable Fuses Applications
- Circuit protection in electronic devices requiring overcurrent safety
- Short circuit prevention in low-voltage power supply lines
- Protection in consumer electronics utilizing surface mount components
Ptc Resettable Fuses Procurement Notes
Verify the specific manufacturer designation, confirming RFE/Fuzetec as the source. Ensure the part number matches exactly to avoid confusion with similar series variants. Check datasheet specifications for voltage and current ratings to confirm suitability for the target application environment before finalizing procurement decisions.
Ptc Resettable Fuses Selection Notes
Select this component based on the required 16V maximum voltage rating and 1.25 A hold current. Consider the 1812 package size constraints and the concave profile for board space limitations. Evaluate the 400 ms trip time requirement against the system's sensitivity to transient currents to ensure appropriate protection coordination.
Ptc Resettable Fuses Part Context
This component belongs to the FSMD series of surface mountable PTC resettable fuses from Fuzetec Technology Co., Ltd. These devices are engineered for telecom equipment and general electronic applications, offering reliable protection within compact form factors suitable for modern printed circuit board designs.
Ptc Resettable Fuses Replacement Considerations
Consult official manufacturer substitution lists for confirmed equivalent part numbers. Do not assume cross-compatibility with other brands or series without verifying electrical parameters and physical dimensions against the original specification sheet.
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