Parts · Transistors

TR1623

Si NPN BJT.1 circuit uses this part.

Substitutes Si NPN transistor

Matched on material, polarity and the limits below from the transistor parameter database. Pinouts and packages are not in that data: check the datasheet before you drop one in, and expect gain to change the sound.

This part

Part	hFE min	Vce	Ic	Pc	fT
2SC1623	60	40 V	100 mA	0.15 W	90 MHz

The database does not list this number. The parameters and matches are those of the 2SC1623, its closest listed equivalent.

Used on other boards here

Part	hFE min	Vce	Ic	Pc	fT	Boards
2SC536	60	30 V	100 mA	0.2 W	115 MHz	4
2SC2712	70	50 V	150 mA	0.15 W	80 MHz	1
2SC828A	65	45 V	50 mA	0.25 W	110 MHz	1
2SC828	65	30 V	50 mA	0.25 W	110 MHz	27
2SC2458	70	50 V	150 mA	0.2 W	80 MHz	10
2SC1815	70	50 V	150 mA	0.4 W	80 MHz	85
2SC945	75	40 V	100 mA	0.25 W	125 MHz	10
MPSA05	50	60 V	500 mA	0.33 W	100 MHz	6

Closest by the numbers

Part	hFE min	Vce	Ic	Pc	fT
2SC714	60	40 V	200 mA	0.25 W	100 MHz
2SC376	60	35 V	100 mA	0.2 W	75 MHz
2SC248	60	40 V	50 mA	0.3 W	85 MHz
2SC1285S	60	50 V	100 mA	0.2 W	70 MHz
2N5824	60	40 V	100 mA	0.36 W	90 MHz
2SC459	60	30 V	100 mA	0.2 W	115 MHz
2N3130	60	60 V	100 mA	0.15 W	60 MHz
2N3845	60	30 V	100 mA	0.2 W	120 MHz

Faceplate	Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
	Danelectro PBJ DJ-17 ECHO-IC · LM311 · LM78L05AC · RAM Danelectro PBJ DJ-17	Danelectro PBJ DJ-17	Delay	Experimentalists Anonymous	—	3	—	94