PSSI2021SAY vs NSI50350AST3G Comparison
Detailed side-by-side comparison of PSSI2021SAY by Nexperia and NSI50350AST3G by onsemi. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Specification Comparison
| Parameter | PSSI2021SAY | NSI50350AST3G |
|---|---|---|
| Brand | Nexperia | onsemi |
| Category | Transistors | LED Drivers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $0.15 | $0.31 |
| 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 | — |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40C to +125C | — |
| Topology | High-side constant current source | — |
| Qualification | AEC-Q101 (automotive grade) | — |
| RoHS Status | Compliant | Compliant |
| Configuration | Single one-chip solution (transistor + resistor + 2 diodes) | High-Side or Low-Side |
| External Component | Resistor between pins 4 and 5 to set I_OUT | — |
| 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) |
| Operating Temperature Range | — | -55C to +175C |
| Temperature Coefficient | — | Negative (thermal self-protection) |
| MSL Level | — | [DATA_NEEDED: MSL level] |
| Lead-Free | — | Yes |
| REACH Status | — | Compliant |
| Automotive Grade | — | Standard (NSV variant is AEC-Q100) |
| Pin Count | — | 2 |