Programmable Unijunction

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Voltage	Power Dissipation (Max)	Voltage - Output	Voltage - Offset (Vt)	Current - Gate to Anode Leakage (Igao)	Current - Valley (Iv)	Current - Peak	Package / Case

CMPP6028 TR PBFREE PROGRAMMABLE UJT SOT-23 Central Semiconductor Corp	12.273 In Stock	1 : 2,45000 € Cut Tape (CT) 3.000 : 1,19237 € Tape & Reel (TR)	-	Tape & Reel (TR) Cut Tape (CT) Digi-Reel®	Active	40V	167 mW	6V	600 mV	10 nA	25 µA	150 nA	TO-236-3, SC-59, SOT-23-3
GES6028TPE1 PNP PROGRAMMABLE UNIJUNCTION TRA Harris Corporation	2.000 Marketplace	2.000 : 0,17323 € Bulk	*	Bulk	Active	-	-	-	-	-	-	-	-
2N4988 SMALL SIGNAL BIPOLAR TRANSISTOR Harris Corporation	6.636 Marketplace	485 : 0,56526 € Bulk	-	Bulk	Active	-	-	-	-	-	-	-	TO-98-3
2N2646 UNI JUNCT TRANS TO18 Solid State Inc.	3.940 Marketplace	50 : 1,17600 € Box	-	Box	Active	35V	300 mW	-	3 V	-	600 µA	5 µA	TO-206AA, TO-18-3 Metal Can
2N4989 SMALL SIGNAL BIPOLAR TRANSISTOR Harris Corporation	922 Marketplace	189 : 1,44958 € Bulk	-	Bulk	Active	30V	-	-	-	-	-	-	TO-98-3
2N4990 SILICON UNILATERAL SWITCH SUS PA Solid State Inc.	9.960 Marketplace	10 : 1,52000 € Bulk	-	Bulk	Active	-	-	-	-	-	-	-	TO-226-3, TO-92-3 (TO-226AA)
2N2647 TO 18 UNIJUNCTION TRANSISTOR Solid State Inc.	120 Marketplace	10 : 1,77800 € Bulk	-	Bulk	Active	35V	300 mW	7V	-	-	18 mA	2 µA	TO-206AA, TO-18-3 Metal Can
2N1671A TO 5 UNIJUNCTION TRANSISTOR Solid State Inc.	50 Marketplace	10 : 54,70200 € Bulk	-	Bulk	Active	30V	450 mW	-	-	-	-	25 µA	TO-205AA, TO-5-3 Metal Can
2N1671C TO 5 UNIJUNCTION TRANSISTOR Solid State Inc.	50 Marketplace	10 : 54,70200 € Bulk	-	Bulk	Active	30V	450 mW	-	-	-	-	25 µA	TO-205AA, TO-5-3 Metal Can
2N1671B UNI JUNCT TRANS TO5 Solid State Inc.	100 Marketplace	1 : 51,05000 € Box	-	Box	Active	-	-	-	-	-	-	-	TO-205AA, TO-5-3 Metal Can
2N1671 TO 5 UNIJUNCTION TRANSISTOR Solid State Inc.	40 Marketplace	10 : 54,70200 € Bulk	-	Bulk	Active	30V	450 mW	-	-	-	-	25 µA	TO-205AA, TO-5-3 Metal Can
CMPP6027 TR PBFREE PROGRAMMABLE UJT SOT-23 Central Semiconductor Corp	0 In Stock Check Lead Time	3.000 : 0,99812 € Tape & Reel (TR)	CMPP	Tape & Reel (TR)	Active	40V	167 mW	6V	600 mV	10 nA	50 µA	2 µA	TO-236-3, SC-59, SOT-23-3
2N6027 PBFREE PROGRAMMABLE UJT 40V TO226-3 Central Semiconductor Corp	0 In Stock Check Lead Time	2.500 : 1,01098 € Bulk	-	Bulk	Active	40V	300 mW	6V	1.6 V	10 nA	50 µA	2 µA	TO-226-3, TO-92-3 (TO-226AA)
2N6028 PBFREE PROGRAMMABLE UJT 40V TO226-3 Central Semiconductor Corp	0 In Stock Check Lead Time	2.500 : 1,01098 € Bulk	-	Bulk	Active	40V	300 mW	6V	600 mV	10 nA	25 µA	150 nA	TO-226-3, TO-92-3 (TO-226AA)
2N6027RLRA PROGRAMMABLE UJT 40V TO92 onsemi	0 In Stock	Obsolete	-	Cut Tape (CT)	Obsolete	40V	300 mW	11V	1.6 V	10 nA	50 µA	2 µA	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
2N6028RLRA PROGRAMMABLE UJT 40V TO92 onsemi	0 In Stock	Obsolete	-	Cut Tape (CT)	Obsolete	40V	300 mW	11V	600 mV	10 nA	25 µA	150 nA	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
2N6027RLRAG PROGRAMMABLE UJT 40V TO92 onsemi	0 In Stock	Obsolete	-	Tape & Reel (TR)	Obsolete	40V	300 mW	11V	1.6 V	10 nA	50 µA	2 µA	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
2N6028RLRAG PROGRAMMABLE UJT 40V TO92 onsemi	0 In Stock	Obsolete	-	Tape & Reel (TR)	Obsolete	40V	300 mW	11V	600 mV	10 nA	25 µA	150 nA	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
2N6027G TRANS PROG UNIJUNCT 40V TO92 onsemi	0 In Stock	Obsolete	-	Box	Obsolete	40V	300 mW	11V	1.6 V	10 nA	50 µA	2 µA	TO-226-3, TO-92-3 (TO-226AA)
2N6027RL1 PROGRAMMABLE UJT 40V TO92 onsemi	0 In Stock	Obsolete	-	Tape & Reel (TR)	Obsolete	40V	300 mW	11V	1.6 V	10 nA	50 µA	2 µA	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
2N6028G PROGRAMMABLE UJT 40V TO92 onsemi	0 In Stock	Obsolete	-	Bulk	Obsolete	40V	300 mW	11V	600 mV	10 nA	25 µA	150 nA	TO-226-3, TO-92-3 (TO-226AA)
2N6028RLRP PROGRAMMABLE UJT 40V TO92 onsemi	0 In Stock	Obsolete	-	Tape & Box (TB)	Obsolete	40V	300 mW	11V	600 mV	10 nA	25 µA	150 nA	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
2N6027RL1G PROGRAMMABLE UJT 40V TO92 onsemi	0 In Stock	Obsolete	-	Tape & Reel (TR)	Obsolete	40V	300 mW	11V	1.6 V	10 nA	50 µA	2 µA	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
2N6028RLRMG PROGRAMMABLE UJT 40V TO92 onsemi	0 In Stock	Obsolete	-	Tape & Box (TB)	Obsolete	40V	300 mW	11V	600 mV	10 nA	25 µA	150 nA	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
2N6028RLRPG PROGRAMMABLE UJT 40V TO92 onsemi	0 In Stock	Obsolete	-	Tape & Box (TB)	Obsolete	40V	300 mW	11V	600 mV	10 nA	25 µA	150 nA	TO-226-3, TO-92-3 (TO-226AA) Formed Leads

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Programmable unijunction transistors (PUTs) are a relative of Silicon Controlled Rectifier (SCR) devices, having a characteristic behavior somewhat like a unidirectional DIAC with a user-configurable threshold voltage. While useful for creating low frequency oscillator and timing functions, SCR triggering applications, and others, alternative techniques for addressing such needs have gained greater favor.