Littelfuse, Inc. PTC Resettable Fuses - BBRF550S BBRF550S

Manufacturer: Littelfuse Inc.
Win Source Part Number: 769703-BBRF550S
Series: PolySwitch
Packaging: Bulk
Type: Polymeric
Mounting Style: Through Hole
Package: Radial, Disc
Approvals: CSA, UL
Lead Spacing: 0.200" (5.08mm)
Voltage - Max: 99V
Current - Max: 20A
Current - Trip (It): 1.1A
Time to Trip: 60s
Part Status: Obsolete(EOL)
Family Name: BBRF
Categories: Circuit Protection
Dimension: 0.430" Dia x 0.140" W (10.90mm x 3.60mm)
Current - Hold (Ih) (Maximum): 550mA
Height - Seated (Maximum): 0.570" (14.40mm)
Resistance - Initial (Ri) (Minimum): 800 mOhm
Resistance - Post Trip (R1) (Maximum): 1.95 Ohm
Alternative Parts (Cross-Reference): BBRF550;
Introduction Date: January 01, 2000
ECCN: EAR99
Estimated EOL Date: Obsolete / End of life
Halogen Free: Not Compliant
Popularity: Medium
Fake Threat In the Open Market: 30 pct.
Supply and Demand Status: Limited

PTC RESET FUSE 99V 550MA RADIAL Product overview: BBRF550S from Littelfuse is a Circuit Protection Fuse for overcurrent protection, power input protection, equipment safety, automotive electronics, and industrial control panels. It is useful for engineers and buyers comparing datasheets, replacement parts, BOM lines, package options, lifecycle status, and procurement availability. Key searchable attributes include 99V, 550MA. Search-friendly keywords include fuse, circuit protection, overcurrent protection, equipment safety, 99V, 550MA, Circuit Protection Fuse, PTC Resettable Fuses. This listing supports clearer product discovery for industrial, commercial, repair, automation, power, sensing, and embedded system projects. Product number 150-BBRF550S can be used for catalog matching and distributor lookup.