INDUSTRIAL PART REFERENCE
HamamatsuHamamatsu R649
The Hamamatsu R649 is a 51 mm head-on type photomultiplier tube manufactured by Hamamatsu Photonics. It features a multialkali photocathode with a 5 mm x 8 mm effective area and a spectral response range of 300 nm to 850 nm. The component includes a borosilicate glass window, a box-type dynode structure with 12 stages, and HA coating. It is designed for visible to near-infrared weak light photon counting measurements.
Hamamatsu
R649
Industrial component
PROCUREMENT NOTE
Accurate identification before quotation
The complete Hamamatsu R649 reference is used as the starting point for sourcing. Price, availability, lead time and application-specific compatibility are confirmed during quotation review.
19 manufacturer-verified details shown below.
TECHNICAL DATA AND EVIDENCE
Technical properties and reference data
| Property | Value | Evidence |
|---|---|---|
| anode dark count typ | 200 s -1 | Manufacturer verifiedChecked 2026-08-24 |
| anode luminous sensitivity min | 100 A/lm | Manufacturer verifiedChecked 2026-08-24 |
| anode luminous sensitivity typ | 800 A/lm | Manufacturer verifiedChecked 2026-08-24 |
| anode radiant sensitivity typ | 3.4 x 10 5 A/W | Manufacturer verifiedChecked 2026-08-24 |
| Voltage | 1000 V | Manufacturer verifiedChecked 2026-08-24 |
| Voltage | 1500 V | Manufacturer verifiedChecked 2026-08-24 |
| Current | 0.01 mA | Manufacturer verifiedChecked 2026-08-24 |
| cathode luminous sensitivity typ | 120 uA/lm | Manufacturer verifiedChecked 2026-08-24 |
| dynode structure | Box | Manufacturer verifiedChecked 2026-08-24 |
| gain typ | 6.7 x 10 6 | Manufacturer verifiedChecked 2026-08-24 |
| Material | Multialkali | Manufacturer verifiedChecked 2026-08-24 |
| photosensitive surface shape | Square | Manufacturer verifiedChecked 2026-08-24 |
| photosensitive surface size | 5 x 8 mm | Manufacturer verifiedChecked 2026-08-24 |
| red sensitivity ratio r 68 typ | 0.2 | Manufacturer verifiedChecked 2026-08-24 |
| spectral response curve no | 500 | Manufacturer verifiedChecked 2026-08-24 |
| spectral response long | 850 nm | Manufacturer verifiedChecked 2026-08-24 |
| spectral response peak | 420 nm | Manufacturer verifiedChecked 2026-08-24 |
| spectral response short | 300 nm | Manufacturer verifiedChecked 2026-08-24 |
| Material | Borosilicate glass | Manufacturer verifiedChecked 2026-08-24 |
Revisions and regional variants may exist. Send an RFQ with the exact part number and quantity for final confirmation.
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Hamamatsu R649 FAQ
What is Hamamatsu R649?
The Hamamatsu R649 is a 51 mm head-on type photomultiplier tube manufactured by Hamamatsu Photonics. It features a multialkali photocathode with a 5 mm x 8 mm effective area and a spectral response range of 300 nm to 850 nm. The component includes a borosilicate glass window, a box-type dynode structure with 12 stages, and HA coating. It is designed for visible to near-infrared weak light photon counting measurements.
What are the technical specifications of Hamamatsu R649?
anode dark count typ: 200 s -1; anode luminous sensitivity min: 100 A/lm; anode luminous sensitivity typ: 800 A/lm; anode radiant sensitivity typ: 3.4 x 10 5 A/W; Voltage: 1000 V; Voltage: 1500 V; Current: 0.01 mA; cathode luminous sensitivity typ: 120 uA/lm. The full manufacturer specification is confirmed during RFQ review.
How can I request a quote for Hamamatsu R649?
Submit the exact reference Hamamatsu R649 with quantity and destination country through the RFQ form on this page. Initial response arrives within 0-4 hours; price, availability and lead time are confirmed in a written quotation.