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Product Detailed Parameters
- Description：PTC RESET FUSE 9V 200MA 0603
- Series：POLY-FUSE®, 0603L
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：Polymeric
- Voltage - Max：9V
- Current - Hold (Ih) (Max)：200 mA
- Current - Trip (It)：500 mA
- Current - Max：40 A
- Time to Trip：600 ms
- Resistance - Initial (Ri) (Min)：550 mOhms
- Resistance - Post Trip (R1) (Max)：3.5 Ohms
- Resistance - 25°C (Typ)：-
- Operating Temperature：-40°C ~ 85°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Surface Mount
- Package / Case：0603 (1608 Metric), Concave
- Size / Dimension：0.063" L x 0.032" W (1.60mm x 0.80mm)
- Height - Seated (Max)：-
- Thickness (Max)：0.030" (0.75mm)
- Lead Spacing：-
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Overview
The Littelfuse Inc. 0603L020YR is a POLY-FUSE® polymer PTC self-resettable fuse designed for surface mount applications in the 0603 (1608 metric) package. It provides overcurrent protection with a maximum working voltage of 9 VDC and a hold current (Ih) of 200 mA. The device trips at a minimum current of 400 mA and features a maximum trip time of 80 ms. Initial resistance is typically 500 mOhms, rising to a maximum of 3 Ohms after tripping. It operates within a temperature range of -40°C to +85°C and carries cURus and TUV certifications.
Feature Summary
- Self-resetting functionality utilizing polymer positive temperature coefficient technology
- Compact 0603 surface mount footprint for space-constrained circuit boards
- High inrush current withstand capability without nuisance tripping
- RoHS compliant construction suitable for lead-free reflow soldering
Applications
- Portable consumer electronics protection
- Data communication interface circuits
- Battery pack overcurrent safeguarding
- Peripheral device input lines
Procurement Notes
Verify the specific suffix 'YR' against the manufacturer's latest datasheet to confirm packaging configuration and material composition updates. Ensure compatibility with standard SMT reflow profiles. Cross-reference certification marks such as UL and TUV for final assembly compliance requirements before integration into regulated products.
Selection Notes
Select this component when circuit protection is required for low-voltage DC lines under 9 V. The 200 mA hold current suits sensitive signal or power rails. Verify that the expected operating current remains below the hold rating while allowing transient surges below the trip threshold. Consider thermal derating if ambient temperatures approach the upper operational limit.
Part Context
This part belongs to the 0603L series of PolySwitch resettable fuses from Littelfuse. The series offers various current ratings within a standardized small outline package. These devices serve as alternative protection solutions to traditional one-time fuses, enabling automatic circuit recovery after fault conditions are cleared.
Replacement Considerations
Compatible substitutes include other 0603 PPTC fuses with identical 9V voltage rating and 200mA hold current specifications. Verify physical dimensions and pinout compatibility before substitution.
