NSI50350AST3G vs PSSI2021SAY Comparison
Detailed side-by-side comparison of NSI50350AST3G by onsemi and PSSI2021SAY by Nexperia. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | NSI50350AST3G | PSSI2021SAY |
|---|---|---|
| Brand | onsemi | Nexperia |
| Category | LED Drivers | Transistors |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.31 | $0.15 |
| Regulated Current | 350 mA ±10% | — |
| Maximum Anode-Cathode Voltage | 50 V | — |
| Maximum Power Dissipation | 5.8 W | — |
| Technology | Self-Biased Transistor (SBT) | — |
| Package Type | SMC (2-pin) | — |
| Configuration | High-Side or Low-Side | Single one-chip solution (transistor + resistor + 2 diodes) |
| Operating Temperature Range | -55C to +175C | — |
| Temperature Coefficient | Negative (thermal self-protection) | — |
| Mounting Type | Surface Mount | Surface Mount |
| MSL Level | [DATA_NEEDED: MSL level] | — |
| RoHS Status | Compliant | Compliant |
| Lead-Free | Yes | — |
| REACH Status | Compliant | — |
| Automotive Grade | Standard (NSV variant is AEC-Q100) | — |
| Pin Count | 2 | — |
| Manufacturer | — | Nexperia |
| Part Number | — | PSSI2021SAY |
| Part Status | — | Active |
| Function | — | Constant Current Source |
| Transistor Type | — | PNP with integrated bias resistor and two diodes |
| Output Current Range | — | 15 uA to 50 mA (set by external resistor) |
| Maximum Output Current | — | 50 mA |
| Package | — | SOT-353 (SC-88A) / UMT5 |
| Number of Pins | — | 5 |
| Operating Temperature | — | -40C to +125C |
| Topology | — | High-side constant current source |
| Qualification | — | AEC-Q101 (automotive grade) |
| External Component | — | Resistor between pins 4 and 5 to set I_OUT |