FK4B01100L1 Panasonic Switch (Other) In Stock
Panasonic FK4B01100L1 is a single N-channel MOSFET in an ultra-compact CSP package measuring 0.8×0.8×0.1 mm, designed for space-critical switching applications in portable and wearable electronics. Its surface-mount CSP form factor enables ultra-thin PCB designs with minimal board area.
- Manufacturer
- Panasonic
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- FK4B01100L1 Datasheet PDF
- Category
- Switch
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-compact 0.8×0.8×0.1 mm CSP package enabling sub-millimeter footprint for wearable and portable device designs
- Single N-channel MOSFET topology providing efficient low-side switching in battery-powered applications
- Surface-mount chip-scale packaging (CSP) supporting automated SMT assembly with minimal pick-and-place tolerances
- Low-profile 0.1 mm height enabling ultra-thin PCB stack-ups in space-constrained consumer electronics
Applications
The FK4B01100L1 is suited for load switching, power management, and signal switching in ultra-compact portable devices including wearables, smartphones, and IoT sensors where board space is at a premium. Its 0.8×0.8 mm CSP footprint enables dense multi-component layouts that standard SOT-23 or SC-70 packages cannot achieve. The N-channel MOSFET configuration is ideal for low-side switch topologies in battery-powered circuits operating at low voltages.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How small is the FK4B01100L1 package and why does it matter for wearable designs?
The FK4B01100L1 is housed in a 0.8×0.8×0.1 mm CSP package, making it one of the smallest single N-channel MOSFETs available. This ultra-compact footprint is critical for wearable devices and IoT sensors where every square millimeter of PCB space is constrained and low-profile assemblies under 0.5 mm height are required.
What switching applications is the FK4B01100L1 best suited for?
The FK4B01100L1 is optimized for low-side load switching and power management in portable electronics operating at low supply voltages. Its single N-channel MOSFET structure supports battery-powered devices requiring efficient switching with minimal board area, such as smartphone peripherals, smartwatch modules, and compact IoT nodes.
How does the FK4B01100L1 CSP package compare to SOT-23 alternatives for dense PCB layouts?
The FK4B01100L1's 0.8×0.8 mm CSP footprint is significantly smaller than a standard SOT-23 package (approximately 2.9×1.3 mm), saving over 80% of PCB area. This reduction is critical in multi-chip modules or ultra-thin assemblies where SOT-23 components would exceed the available board real estate.
Is the FK4B01100L1 compatible with standard SMT reflow soldering processes?
Yes, the FK4B01100L1 uses a surface-mount CSP package compatible with standard reflow soldering. Its 0.8×0.8×0.1 mm body requires precision pick-and-place equipment, but it is fully processable on SMT lines capable of handling chip-scale packages with sub-1 mm pitch pads.
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