FNIRSI P02 USB Oscilloscope Probe Set vs Weller Brass Sponge Tip Cleaner with Silicone Holder
Head-to-head spec comparison to help you pick the right bench tool for your needs.
FNIRSI
$49
Weller
$8.58
Comparing brands?
Read the full Hakko vs Weller vs JBC: The Definitive Soldering Station Brand Comparison →
Brand philosophies, tip ecosystems, 5-year TCO math, and what we'd actually buy with our own money.
Read the brand-comparison guide →Spec-by-Spec Comparison
| Spec | FNIRSI P02 USB Oscilloscope Probe Set | Weller Brass Sponge Tip Cleaner with Silicone Holder |
|---|---|---|
| Station Type | USB Oscilloscope Probe | Brass Sponge Tip Cleaner |
| Wattage | 0 W | 0 W |
| Temp Range | N/A °C | N/A °C |
| Temp Stability | 0 ±°C | 0 ±°C |
| Tip System | Probe Clips | Universal (Silicone Holder) |
| Digital Display | No | No |
| Temp Lock | No | No |
| Sleep Mode | No | No |
| Hot-Air Channel | No | No |
| Channels | 2 | 0 |
| Price | $49 | $8.58 |
| Rating | 4.1/10 | 4.5/10 |
| Buy on Amazon | Buy on Amazon |
Pros & Cons
FNIRSI P02 USB Oscilloscope Probe Set
Pros
- No PC software needed — runs via USB-C as a USB scope directly
- 50MHz bandwidth sufficient for most digital signal debugging (I2C, SPI, UART)
- Compact enough to keep on the bench without dedicated scope space
- Includes 2 probes for comparing clock vs data simultaneously
- Works on Windows, Mac, and Linux without drivers
- Adds real capability at an impulse-buy price
Cons
- Not a replacement for a real oscilloscope — sample depth and trigger options limited
- USB bandwidth means slower waveform update rate than dedicated hardware
- No external trigger input
- Software UI is functional but not polished
Weller Brass Sponge Tip Cleaner with Silicone Holder
Pros
- Brass sponge cleans tips without the thermal shock of a wet cellulose sponge — extends tip life
- Silicone holder base is heat-resistant and won't scorch the bench like a bare metal tray
- Works with any iron in this roundup, not just Weller stations — a universal accessory
- Genuinely under-$10 upgrade over the wet sponge most stations ship with
Cons
- Brass wool needs periodic replacement/topping-off as it packs down with use
- Doesn't remove heavy oxidation the way a tip-tinning compound does — it's maintenance, not restoration
- Marketed as a Weller accessory but is functionally identical to generic brass-sponge cleaners — no real brand premium beyond the holder
Our Verdicts
FNIRSI P02 USB Oscilloscope Probe Set
The FNIRSI P02 is the best 'good enough' USB scope for a soldering bench. If you debug Arduino/ESP firmware, verify PWM signals, or check I2C traffic, it saves hours of print-statement debugging. Not a standalone scope replacement — a perfect $50 complement.
Weller Brass Sponge Tip Cleaner with Silicone Holder
A small, cheap upgrade that pays for itself in tip life. Swap the wet sponge that ships with most stations for a brass one — it's a near-zero-cost decision that every bench in this roundup benefits from.
Frequently Asked Questions
Which is better, the FNIRSI P02 USB Oscilloscope Probe Set or the Weller Brass Sponge Tip Cleaner with Silicone Holder?
It depends on your use case. FNIRSI P02 USB Oscilloscope Probe Set (FNIRSI, $49): The FNIRSI P02 is the best 'good enough' USB scope for a soldering bench. If you debug Arduino/ESP firmware, verify PWM signals, or check I2C traffic, it saves hours of print-statement debugging. Not a standalone scope replacement — a perfect $50 complement. Weller Brass Sponge Tip Cleaner with Silicone Holder (Weller, $8.58): A small, cheap upgrade that pays for itself in tip life. Swap the wet sponge that ships with most stations for a brass one — it's a near-zero-cost decision that every bench in this roundup benefits from.
How much does the FNIRSI P02 USB Oscilloscope Probe Set cost vs the Weller Brass Sponge Tip Cleaner with Silicone Holder?
As of 2026, the FNIRSI P02 USB Oscilloscope Probe Set is $49 and the Weller Brass Sponge Tip Cleaner with Silicone Holder is $8.58 on Amazon — a $40.42 difference. Amazon list prices fluctuate; check the linked product pages for current pricing.
Is the FNIRSI P02 USB Oscilloscope Probe Set good for beginners?
FNIRSI P02 USB Oscilloscope Probe Set is suited for: hobbyist, pcb, beginner. Weller Brass Sponge Tip Cleaner with Silicone Holder is suited for: beginner, hobbyist, pcb. If you're picking your first bench tool, choose the one whose use-case list includes "beginner" — and prioritize ease of setup over advanced features.
Which has the better support ecosystem, FNIRSI or Weller?
FNIRSI P02 USB Oscilloscope Probe Set: uses the Probe Clips tip ecosystem, so replacement tips and specialty shapes matter. Weller Brass Sponge Tip Cleaner with Silicone Holder: uses the Universal (Silicone Holder) tip ecosystem, so replacement tips and specialty shapes matter.