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Product Detailed Parameters
- Description：PTC RESET FUSE 18V 140MA RADIAL
- Series：PTF
- Mfr：Amphenol Advanced Sensors (Thermometrics)
- Package：Bulk
- Type：Ceramic
- Voltage - Max：18V
- Current - Hold (Ih) (Max)：140 mA
- Current - Trip (It)：290 mA
- Current - Max：-
- Time to Trip：-
- Resistance - Initial (Ri) (Min)：-
- Resistance - Post Trip (R1) (Max)：-
- Resistance - 25°C (Typ)：10 Ohms
- Operating Temperature：10°C ~ 55°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.350" Dia x 0.150" T (8.90mm x 3.80mm)
- Height - Seated (Max)：0.350" (8.90mm)
- Thickness (Max)：-
- Lead Spacing：0.197" (5.00mm)
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Overview
The YQS5838PTF is a ceramic PTC reset fuse manufactured by Amphenol Advanced Sensors under the Thermometrics brand. It belongs to the PTF series and features radial through-hole mounting with a disc form factor. The component has a maximum voltage rating of 18V and a hold current (Ih) of 140 mA, with a trip current (It) of 290 mA. Its resistance at 25°C is typically 10 Ohms with a tolerance of 20%. Operating temperature range spans from +10°C to +55°C. Physical dimensions are 8.9 mm in diameter and 3.8 mm in height, with a lead spacing of 5 mm.
Feature Summary
- Provides automatic circuit protection through self-resetting functionality upon fault clearance
- Utilizes ceramic PTC material for stable thermal response characteristics
- Designed for radial PCB mount applications with standard lead spacing
Applications
- Overcurrent protection in electronic circuits
- Temperature sensing elements requiring positive temperature coefficient behavior
- Circuit protection for low-voltage consumer electronics
Procurement Notes
Verify the specific suffix 'PTF' against official Amphenol documentation to confirm the exact electrical ratings and tolerance class. Ensure the procurement channel sources genuine components matching the manufacturer part number YQS5838PTF. Cross-reference the datasheet for any recent product change notifications or pinout updates before integration into final designs.
Selection Notes
Select this component when a self-resetting overcurrent protector with a 140 mA hold current and 18 V maximum voltage is required. Consider the 10 Ohm typical resistance and radial package size for board layout constraints. Verify that the operating environment stays within the specified +10°C to +55°C range for optimal performance.
Part Context
This part is produced by Amphenol Advanced Sensors, specifically under their Thermometrics division, which specializes in temperature measurement and sensor products. The YQS5838PTF is part of the broader PTC thermistor family designed for circuit protection and sensing applications within the industrial and consumer electronics sectors.
Replacement Considerations
Consult official Amphenol documentation for confirmed substitute part numbers within the YQS or YS series. Do not assume functional equivalence with generic PTC fuses without verifying voltage, current, and dimensional specifications.
