Quadrant and Bi-Cell Photodiodes (SPOT Series)

The SPOT Series are common substrate photodetectors segmented into either two (2) or four (4) separate active areas. They are available with either a 0.005” or 0.0004” well defined gap between the adjacent elements resulting in high response uniformity between the elements. The SPOT series are ideal for very accurate nulling or centering applications. Position information can be obtained when the light spot diameter is larger than the spacing between the cells.

Image	Datasheet	Model Number	Active Area per Element	Active Area Dimensions Per Element	Element Gap	Responsivity	Dark Current	Capacitance	Rise Time	Package	View
		Two Element Bi-Cell									View
	PDF	CD-25T	2.3 mm²	4.6 x 0.5 mm	0.02 mm	0.65 A/W	20 nA (V_R = 15 V)	50 pF (V_R = 15 V)	18 ns	TO-5	View
	PDF	SPOT-2D	3.3 mm²	1.3 x 2.5 mm	0.127 mm	0.65 A/W	0.15 nA	11 pF	22 ns	TO-5	View
	PDF	SPOT-2DMI	0.7 mm²	0.6 x 1.2 mm	0.013 mm	0.65 A/W	0.05 nA	3 pF	11 ns	TO-18	View
	PDF	SPOT-3D	2.8 mm²	0.6 x 4.6 mm	0.025 mm	0.65 A/W	0.13 nA	7 pF	25 ns	TO-5	View
		Four Element Quadrant									View
	PDF	SPOT-4D	1.6 mm²	1.3 mm	0.127 mm	0.65 A/W	1 nA	5 pF	22 ns	TO-5	View
	PDF	SPOT-4DMI	0.3 mm²	0.5 mm	0.013 mm	0.65 A/W	0.01 nA	1 pF	9 ns	TO-5	View
	PDF	SPOT-9D	19.6 mm²	10 Φ mm	0.102 mm	0.65 A/W	0.5 nA	60 pF	33 ns	Low Profile	View
	PDF	SPOT-9DMI	19.6 mm²	10 Φ mm	0.01 mm	0.65 A/W	0.5 nA	60 pF	28 ns	Low Profile	View
	PDF	QD7-0	7.0 mm²	3.0 Φ mm	0.2 mm	0.54 A/W	4 nA	20 pF	10 ns	TO-5	View
	PDF	QD50-0	50.0 mm²	8.0 Φ mm	0.2 mm	0.54 A/W	15 nA	125 pF	10 ns	TO-8	View

Quadrant and Bi-Cell Photodiodes (SPOT Series)

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