FOR SALE lot of 1 pc. One of the biggest ALPHA BETA AND GAMMA Pancake Geiger Counter Tube Beta-5 modern analog of SBT-10A

All tubes are new and tested working well. 


Parcel will be well packed and shipped by air mail with tracking number, shipping usually takes 12-21 days, depends on your location. 

If you need more tubes than listed or other type of devices please send me a message.


Beta-5 Geiger Counter Tube Technical Specifications: 

⚙️ ⚡ ⚙️ Technical Characteristics 

🌟 Electrical Characteristics

ParameterValue
Recommended Operating Voltage400 V
Operating Voltage Range350 – 550 V
Start of Counting Voltage250 – 310 V
Plateau Length≥ 200 V
Plateau Slope≤ 0.25 % / V
Recommended Load Resistor5.1 MΩ

📊 Sensitivity & Background

ParameterValue
Radiation DetectedAlpha / Beta / Gamma
Gamma Sensitivity (Co‑60; 4 μR/s)350–500 pulses/µR
Gamma Sensitivity (Cs‑137; 4 μR/s)320–400 pulses/µR
Intrinsic Background (50 mm Pb shield)≤ 2.2 pulses/sec

📐 Physical Characteristics

ParameterValue
Mica Window Area39 cm²
Dimensions~80 × 65 mm
Weight~105 g

🌡️ Environmental & Lifetime

ParameterValue
Operating Temperature Range−50 °C to +60 °C
Expected Lifetime~1 × 10¹⁰ pulses

✅ Features & Benefits

✔ One of the largest pancake Geiger tubes available
✔ Extra‑large mica window for superior alpha & beta detection
✔ High gamma sensitivity
✔ Wide plateau and stable operation
✔ NEW production, tested before shipping
✔ Great choice for radiation meters, dosimeters, lab instruments, and serious DIY creators

📦 What You Will Receive

🚚 Shipping & Handling

🔁 Returns

Returns accepted if the item is not as described.
Please contact the seller before returning.