STN851-AAlternatives & Equivalent Parts
About STN851-A
STN851-A is a Transistor BJT NPN component manufactured by STMicroelectronics. It comes in a SOT223 (3-Pin) package. Below you'll find known alternative and equivalent parts that can serve as replacements in your design.
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Specification Comparison
| Parameter | STN851-ASource | STN851 |
|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics |
| Package Type | SOT223 (3-Pin) | SOT223 (3-Pin) |
| Pin Count | 4 | 4 |
| Temperature Range | ~ 150.0°C | ~ 150.0°C |
| Price | $0.2470 | $0.2010 |
| Stock | In Stock | In Stock |
| Lifecycle | ACTIVE | ACTIVE |
| Electrical Parameters | ||
| Factory Lead Time | 14 Weeks | 14 Weeks |
| YTEOL | 1 | 4 |
| Case Connection | COLLECTOR | COLLECTOR |
| Collector Current-Max (IC) | 5 A | 5 A |
| Collector-Emitter Voltage-Max | 60 V | 60 V |
| Configuration | SINGLE | SINGLE |
| DC Current Gain-Min (hFE) | 30 | 30 |
| JESD-30 Code | R-PDSO-G4 | R-PDSO-G4 |
| Number of Elements | 1 | 1 |
| Package Body Material | PLASTIC/EPOXY | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR | RECTANGULAR |
| Package Style | SMALL OUTLINE | SMALL OUTLINE |
| Polarity/Channel Type | NPN | NPN |
| Power Dissipation-Max (Abs) | 1.6 W | 1.6 W |
| Qualification Status | Not Qualified | Not Qualified |
| Surface Mount | YES | YES |
| Terminal Form | GULL WING | GULL WING |
| Terminal Position | DUAL | DUAL |
| Transistor Application | SWITCHING | SWITCHING |
| Transistor Element Material | SILICON | SILICON |
| Transition Frequency-Nom (fT) | 130 MHz | 130 MHz |
| JESD-609 Code | — | e3 |
| Peak Reflow Temperature (Cel) | — | 260 |
| Terminal Finish | — | Matte Tin (Sn) - annealed |
| Time@Peak Reflow Temperature-Max (s) | — | 30 |
Cells highlighted in yellow indicate differing values across parts. Always verify with official datasheets before substitution.
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Quick Links
Why Look for Alternatives?
Finding alternatives for STN851-A is essential for supply chain resilience. Component shortages, long lead times, and end-of-life notices can disrupt production schedules. Having verified alternative parts ensures your designs remain manufacturable.
When evaluating STN851-A replacements, consider key parameters such as package compatibility, electrical specifications, and operating temperature range. Our engineering team can help verify pin-to-pin compatibility for your specific application.
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FAQ
What is equivalent to STN851-A?
Known equivalents for STN851-A include STN851. Contact FindMyChip for a full compatibility analysis for your specific application.
Can I use a different manufacturer's part instead of STN851-A?
In many cases, yes. Cross-manufacturer alternatives exist for most standard components. However, always verify pin compatibility, electrical specs, and package dimensions before substituting in production.
How do I verify STN851-A alternatives?
Compare the datasheet specifications including pinout, voltage ratings, timing parameters, and package dimensions. FindMyChip's engineering team can help with compatibility verification — submit an RFQ to get started.