Parts · Diodes

MA150

Si Signal Diode.13 circuits use this part. Listed as: Signal diode, DO-35.

Datasheet · archived copy from Panasonic; the part is discontinued and the maker no longer publishes it

Substitutes same kind

Diodes of the same kind; for clipping, the forward drop is what you hear. The figures are read off each part's datasheet (this one's from page 1), typical where the sheet gives a typical value, otherwise the maximum. Closest first; the last column says what differs. A different part can change the sound, and a circuit may lean on one particular figure, so read the build document's notes before you swap.

This part

Part	Vf	If max	Vr	trr	Cj	Package	Boards
MA150	0.95 V @ 100 mA	0.1 A	35 V	10 ns	0.9 pF	DO-35	13

Alternatives

Part	Vf	If max	Vr	trr	Cj	Package	Boards	Differs
BA282	1 V @ 100 mA	0.1 A	35 V		1.5 pF	DO-35	8	A VHF band-switching diode; Vf is only a 1 V maximum at 100 mA.
MA856	1 V @ 100 mA	0.1 A	35 V		2 pF	DO-34	18	DO-34. A band-switching diode (MA2C856), discontinued; Vf is only a 1 V maximum at 100 mA.
1N456	1 V @ 100 mA	0.5 A	30 V			DO-35	8	Low-leakage 30 V glass diode (25 nA at 25 V) that clips much like a 1N4148.
1S2473	0.92 V @ 100 mA	0.11 A	40 V	1.5 ns	1.5 pF	DO-35	11
OA200	0.53 V @ 0.1 mA	0.05 A	50 V				3	An early silicon-alloy diode with a 0.53 V drop at 0.1 mA, close to a 1N4148.
1N458A	1 V @ 100 mA	0.5 A	150 V			DO-35	2	Low-leakage 150 V glass diode (25 nA at 125 V).
1N457A	1 V @ 20 mA	0.2 A	70 V		8 pF	DO-35	1	Low-leakage 70 V glass diode (25 nA at 60 V).
1N914BWS	0.72 V @ 5 mA	0.15 A	75 V	4 ns	4 pF	SOD-323	2	SOD-323. Surface-mount 1N914B in the small SOD-323 package.
1N916	1 V @ 10 mA	0.2 A	100 V	4 ns	2 pF	DO-35	17	Lower capacitance (2 pF) version of the 1N914.
1N4148	1 V @ 10 mA	0.15 A	100 V	4 ns	4 pF	DO-35	2547	Vf is a 1 V maximum at 10 mA; the sheet calls the 1N914 electrically equivalent.

Circuit	Based on	Category	Vendor	Box	Knobs	Price	BOM
XY 2SC1815-GR · 4558 · NE5534 · TLP222 1590BBS	—	Overdrive	Dead End FX	1590BBS	5	$15.00	116
HAO MU-Tone Driver Vero18×15 Unverified 2N5088 · LF353 HAO MU-Tone Driver	HAO MU-Tone Driver	Overdrive	Dirtbox Layouts	—	2	—	25
Ibanez AD80 2SC536SF · 2SK44SP · MC78L12CP · MN3005 Ibanez AD80	Ibanez AD80	Delay	Experimentalists Anonymous	—	3	—	127
Ibanez FL301 2SA1015 · 2SC1583F · 2SC536SP · 2SK44SP Ibanez FL301	Ibanez FL301	Flanger	Experimentalists Anonymous	—	3	—	114
Ibanez OD855 2SC1815BL · 2SK44SP · 4558 · RC4558 Ibanez OD-855	Ibanez OD-855	Distortion	Experimentalists Anonymous	—	3	—	75
Ibanez PT-90 1458 · 2SC536SP · 2SK30AY · 2SK44SP Ibanez PT-90	Ibanez PT-90	Phaser	Experimentalists Anonymous	—	3	—	102
Ibanez PT909 1458 · 2SC536SP · 2SK30AY · 2SK44SP Ibanez PT909	Ibanez PT909	Phaser	Experimentalists Anonymous	—	3	—	100
Misc Chorus 2SK246 · 4558 · ? · MN3102	—	Vibrato / Chorus	Experimentalists Anonymous	—	—	—	84
Honeysuckle Overdrive 2SC1815 · 4558 · JRC4558 CKK Scream Honey · 125B	CKK Scream Honey	Fuzz	PedalPCB	125B	5	$12.00	47
Ibanez TS7 Tubescreamer Vero Unverified 2N5089 · 4558 · NJM4558 Ibanez Tube Screamer	Ibanez Tube Screamer	Overdrive	Tagboard Effects	—	3	—	26
Maxon OD-F1 Fire Blade Overdrive Effector Vero21×13 Verified 2N5088 · TA75558 Maxon OD-F1 Fire Blade Overdrive Effector	Maxon OD-F1 Fire Blade Overdrive Effector	Overdrive	Tagboard Effects	—	3	—	25
Maxon OD808 Vero19×15 Verified 4558 · JRC4558 Maxon OD808	Maxon OD808	Overdrive	Tagboard Effects	—	3	—	21
Way Huge Green Rhino MK II Vero22×22 Verified LF347 · LM833 · PN2484 Way Huge Green Rhino Mk. II	Way Huge Green Rhino Mk. II	Overdrive	Tagboard Effects	—	3	—	31