Custom Photodarlington Parts - Plano, TX

Photodarlingtons are still produced by Clairex, but only on a custom-device basis. The demand for these sensors has decreased over the years as other options have become available, but not yet dropped to zero. These devices start as photodiodes, but that small light current is fed to the base of a Darlington-connect transistor pair, resulting in light currents that are increased essentially by a factor of h_FE²– a significant increase in light current, but compromised both by lower response speeds and higher leakage currents as a result of base-collector leakage being multiplied by h_FE². Room temperature leakage is generally about the same as for a phototransistor, but increases significantly with increasing temperature.

Contact Clairex for your photodarlingtons needs; the information immediately below and the data sheets referenced are for information only. Photodarlingtons are sold by Clairex only as custom parts.

Part ⁽¹⁾ Number	I_L mA (min)	I_L mA (max)	at E_e ⁽²⁾mW/cm²	V_(BR)CEO⁽³⁾V (min)	q_HP⁽⁴⁾deg. (typ)	I_D ⁽⁵⁾nA (max)
CLR130	0.5	–	0.06	30	35	50
CLR131	2.0	8.0	0.06	30	35	100
CLR132	4.0	–	0.06	30	35	100
CLR130W	2.0	–	0.6	30	70	100
CLR131W	6.0	–	0.6	30	70	100
CLR132W	14.0	–	0.6	30	70	100

Notes:

Click on a part number for datasheet.
The radiation source is a 940nm IRED. V_CE=5V.
Measured at I_C=100mA.
Acceptance angle at half power points.
Measured under dark conditions, V_CE=10V.
A dark condition exists when further irradiation shielding does not reduce I_D