Un diodo avalancha, es un dispositivo semiconductor diseñado especialmente para trabajar en tensión inversa. En estos diodos, poco dopados, cuando la tensión en polarización inversa alcanza el valor de la tensión de ruptura, los electrones que han saltado a la banda de conducción por efecto de la temperatura se aceleran debido al campo eléctrico incrementando su energía cinética, de forma que al colisionar con electrones de valencia los liberan; éstos a su vez, se aceleran y colisionan con otros electrones de valencia liberándolos también, produciéndose una avalancha de electrones cuyo efecto es incrementar la corriente conducida por el diodo sin apenas incremento de la tensión.
El diodo Zener está también diseñado para trabajar en inversa, aunque el mecanismo de ruptura es diferente al aquí expuesto.
Los diodos avalancha generan ruido de radio frecuencia; son comúnmente utilizados como fuentes de ruido en equipos de radio frecuencia. También son usados como fuentes de ruido en los analizadores de antena y como generadores de ruido blanco.
| Parte Nnmber | Fabricantes | Descripción |
|---|---|---|
| TFD312S | Sanken electric | TO-220F Thyristor with built-in Avalanche diode |
| STA401A | Sanken electric | Darlington With built-in avalanche diode |
| STA406 | Sanken electric | Darlington With built-in avalanche diode |
| STA406A | Sanken electric | Darlington With built-in avalanche diode |
| STA413 | Sanken electric | With built-in avalanche diode |
| STA413A | Sanken electric | With built-in avalanche diode |
| STA471A | Sanken electric | Darlington With built-in avalanche diode |
| STA475A | Sanken electric | Darlington With built-in avalanche diode |
| STA481 | Sanken electric | Darlington With built-in avalanche diode |
| STA481A | Sanken electric | Darlington With built-in avalanche diode |
| STA485 | Sanken electric | Darlington With built-in avalanche diode |
| STA485A | Sanken electric | Darlington With built-in avalanche diode |
| STA301A | Sanken electric | Darlington With built-in avalanche diode |
| STA371A | Sanken electric | Darlington With built-in avalanche diode |
| STA435A | Sanken electric | Darlington With built-in avalanche diode |
| SDC04 | Sanken electric | Darlington With built-in avalanche diode |
| DSA35 | IXYS[IXYS Corporation] | Rectifier Diode Avalanche Diode |
| DSA35-12A | IXYS[IXYS Corporation] | Rectifier Diode Avalanche Diode |
| DSA35-16A | IXYS[IXYS Corporation] | Rectifier Diode Avalanche Diode |
| DSA35-18A | IXYS[IXYS Corporation] | Rectifier Diode Avalanche Diode |
| SDC03 | Sanken electric | Darlington With built-in avalanche diode |
| SLA4010 | Sanken electric | Darlington With built-in avalanche diode |
| DSAI17-12A | ETC[ETC] | Rectifier Diode Avalanche Diode |
| DSAI17-16A | ETC[ETC] | Rectifier Diode Avalanche Diode |
| DSAI17-18A | ETC[ETC] | Rectifier Diode Avalanche Diode |
| BAX12 | Philips Semiconductors | Controlled avalanche diode |
| R2KS | discrete Semiconductors | AVALANCHE DIODE(145V, 1.0A) |
| DSA17-16A | ETC[ETC] | Rectifier Diode Avalanche Diode |
| SKA1 | AVALANCHE DIODE | |
| NDL5531P | OPTICAL FIBER COMMUNICATIONS InGaAs AVALANCHE PHOTO DIODE MODULE | |
| NDL5531P1C | OPTICAL FIBER COMMUNICATIONS InGaAs AVALANCHE PHOTO DIODE MODULE | |
| NDL5531P1D | OPTICAL FIBER COMMUNICATIONS InGaAs AVALANCHE PHOTO DIODE MODULE | |
| NDL5531P2C | OPTICAL FIBER COMMUNICATIONS InGaAs AVALANCHE PHOTO DIODE MODULE | |
| NDL5531P2D | OPTICAL FIBER COMMUNICATIONS InGaAs AVALANCHE PHOTO DIODE MODULE | |
| NDL5531PC | OPTICAL FIBER COMMUNICATIONS InGaAs AVALANCHE PHOTO DIODE MODULE | |
| NDL5531PD | OPTICAL FIBER COMMUNICATIONS InGaAs AVALANCHE PHOTO DIODE MODULE | |
| S330D | Vishay | Standard Avalanche Sintergalss Diode |
| SP0503BAHT | DIODE ARRAYS SURFACE MOUNT AVALANCHE DIODE ARRAY | |
| SP0503BA | Littelfuse | (SP0502BA SP0506BA) Diode Arrays Surface Mount Avalanche Diode Array |
| STA435 | Sanken electric | DARLINGTON WITH BUILT-IN AVALANCHE DIODE |
| IXFH26N50P | IXYS Corporation | Avalanche Rated Fast Instrinsic Diode |
| IXFH26N60P | IXYS Corporation | N-Channel Enhancement Mode Fast Recovery Diode Avalanche Rated |
| DSAI35-12A | IXYS Corporation | Rectifier Diode Avalanche Diode |
| DSAI35-16A | IXYS Corporation | Rectifier Diode Avalanche Diode |
| STA460C | Sanken electric | Darlington With built-in avalanche diode |
| SP0518CAA | Littelfuse | (SP0506CA SP0518CAA) Silicon Protection Circuits Rail Clamp Diode Array with Avalanche Diode |
| SKNA2 | Semikron International | Avalanche Diode |
| SKNA213 | Semikron International | Avalanche Diode |
| R2KY | Semiconductor | Avalanche Diode |
| R2K | AVALANCHE DIODE | |
| SKNA20 | Semikron International | Avalanche Diode |
| SKNA20236 | Semikron International | Avalanche Diode |
| SKNA20240 | Semikron International | Avalanche Diode |
| SKNA20242 | Semikron International | Avalanche Diode |
| SKNA20245 | Semikron International | Avalanche Diode |
| SKNA20246 | Semikron International | Avalanche Diode |
| SKNA20248 | Semikron International | Avalanche Diode |
| SKNA20250 | Semikron International | Avalanche Diode |
| SKNA2236 | Semikron International | Avalanche Diode |
| SKNA2240 | Semikron International | Avalanche Diode |
| SKNA2242 | Semikron International | Avalanche Diode |
| SKNA2245 | Semikron International | Avalanche Diode |
| SKNA2246 | Semikron International | Avalanche Diode |
| SKNA2248 | Semikron International | Avalanche Diode |
| SKNA2250 | Semikron International | Avalanche Diode |
| SKNA40236 | Semikron International | Avalanche Diode |
| SKNA40240 | Semikron International | Avalanche Diode |
| SKNA40242 | Semikron International | Avalanche Diode |
| SKNA40245 | Semikron International | Avalanche Diode |
| SKNA40246 | Semikron International | Avalanche Diode |
| SKNA40248 | Semikron International | Avalanche Diode |
| SKNA40250 | Semikron International | Avalanche Diode |
| BY26805 | Vishay Siliconix | Fast Avalanche Sinterglass Diode |
| GPDN2148 | Green Power Solutions | AVALANCHE RECTIFIER DIODE |
| GPDN4087 | Green Power Solutions | AVALANCHE RECTIFIER DIODE |
| GPDN3113 | Green | AVALANCHE RECTIFIER DIODE |
| GPDN3127 | Green | AVALANCHE RECTIFIER DIODE |
| GPDN4100 | Green | AVALANCHE RECTIFIER DIODE |
| GPDP2319 | Green | AVALANCHE RECTIFIER DIODE |
| AARS25L | GROUP | AVALANCHE AUTOMOTIVE DIODE |