DIY audio repairing, rebuilding, refurbishing
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Many thanks to desertfox for this table of information.
| Type | Case | 2Nxxxx | Other | NTE | NTE | Toshiba | NEC | Motorola | Motorola | ||
| 11-0030 | SAE-402 | IC CA3086 | |||||||||
| 11-0044 | NPN | TO92 | 2N3565 | BC237B | 123AP (.6A 75V) | ||||||
| 11-0063 | SAE-101 | NPN | TO3 | MJ802 | |||||||
| 11-0064 | SAE-103 | NPN | TO3 | 2N6284 | |||||||
| 11-0065 | SAE-105 | NPN | TO66 | 2N6316-100V | 331 (15A 100V) | 291 (4A 120V) | |||||
| 11-0066 | SAE-107 | NPN | TO66 | no replacement | |||||||
| 11-0066S | SAE-107 | NPN | TO66 | ||||||||
| 11-0066B | NPN | TO66 | 2N3585 | 175 (3A 300V) | |||||||
| 11-0068 | SAE-9 | NPN | TO3 | 388 (16A 250V) | 2SD424 | MJ21194 (16A 250V) | MJ15025 (16A 250V) | ||||
| 11-0069 | SAE-202 | PNP | TO3 | MJ4502 | MJ21193 | ||||||
| 11-0070 | SAE-204 | PNP | TO3 | MJ11021 | |||||||
| 11-0071 | SAE-206 | PNP | TO66 | 2N6313-100V | 332 (15A 100V) | 292 (4A 120v) | |||||
| 11-0072 | SAE-208 | PNP | TO66 | no replacement | |||||||
| 11-0072B | PNP | TO66 | 2N6213 | 38 (2A 350V) | |||||||
| 11-0072S | SAE-208 | PNP | TO66 | ||||||||
| 11-0074 | SAE-8 | PNP | TO3 | 68 (16A 250V) | 2SB554 | MJ21193 (16A 250V) | MJ15024 (16A 250V) | ||||
| 11-0080A | SAE-801 | NPN | TO202 | MPSU06 | S-1375 | 210 (1A 75V) | 49 (2A 100V) | 2SC4793 (1A 230V) | D610 | ||
| 11-0081 | SAE-803 | NPN | TO92 | MPSA42 | |||||||
| 11-0082 | |||||||||||
| 11-0083 | SAE-902 | PNP | TO202 | MPSU56 | 189 (2A 80V) | ||||||
| 11-0083A | SAE-902 | PNP | TO202 | MPSU56 | S-1376 | 211 (1A 75V) | 50 (2A 100V) | 2SA1837 (1A 230V) | B630 | ||
| 11-0084 | SAE-904 | PNP | TO92 | MPSA92 | |||||||
| 11-0117 | PNP | TO92 | BC307B | 159+ (1A 80V) | |||||||
| 11-0139 | SAE-1 | NPN | TO3 | 280 (12A 150V) | 87 (10A 250V) | ||||||
| 11-0140 | SAE-2 | PNP | TO3 | 281 (12A 150V) | 88 (10A 250V) | ||||||
| 11-0148 | PNP | TO220 | 55 (8A 150V) | 2SB595 | MJW21192 (8A 150V) | ||||||
| 11-0149 | NPN | TO220 | 54 (8A 150V) | 2SD525 | MJW21191 (8A 150V) | ||||||
| 11-0150 | PNP | TO220 | S-1236 | 196 (7A 80V) | 291 (4A 120V) | ||||||
| 11-0151 | NPN | TO220 | S-1237 | 197 (7A 80V) | 292 (4A 120V) | ||||||
| NPN | D610 | 375 (3A 150V) | |||||||||
| PNP | B630 | 398 (2A 300V) | |||||||||
| NPN | C1583 | 42 (.1A 50V) | |||||||||
| PNP | A798 | 43 (.1A 50V) | |||||||||
| NPN | C1913 | 375 (3A 150V) | |||||||||
| PNP | MPSU56 | 189 (2A 80V) | |||||||||
| NPN | 188 (2A 80V) | ||||||||||
| 11-0160 | 948 (IC) |
Download this table as an Excel spreadsheet 
Model 2200 amp bias
| SAE # Cross NTE / ECG | ||||||||||||||||||
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Model 2200 and 2400 amp output
| SAE # Cross NTE / ECG | ||||||
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Model 2200 amp
The resistor between the emitters of the 2SD525 and the 2SB595 is 62 ohms
Model 2200 amp
Pins 6 and 11 (channel A) or 7 and 12 (channel B) are the ends of the 2 ohm emitter resistors and can be used to adjust bias.
Model 2200 amp
You can save some time by checking every 1N4148 diode, odds are some are shorted.
Model A501 and X-25A amp
| Output Transistors | 2SD424 x 6 per channel 2SB554 x 6 per channel |
| Bias Transistors | 2SD845 Q111 & Q11 2SB755 Q112 & Q12 |
Models 180 & E101 equalizers
11-0160 is a quad op-amp # 4156
Diode 11-0091 is a Fairchild FDH400
Useful Links
