CNCHIPDEPOT Original Part
SS8550
SS8550 PNP BJT transistor with 25V VCEO, 1.5A collector current, 300mW power rating and SOT-23 package.
Transistor PolarityPNP
Collector-Emitter Voltage (VCEO)25 V
Collector Current (IC)1.5 A
DC Current Gain (hFE)120–400 @ IC = 100 mA, VCE = -1 V
Power Dissipation (PD)300 mW
PackageSOT-23
Product Overview
The SS8550 is a PNP bipolar junction transistor (BJT) designed for low-voltage switching and general-purpose amplification. It features a 25V collector-emitter voltage rating, 1.5A maximum collector current, and 300mW power dissipation. Its relatively high collector current rating supports discrete driver circuits and low-voltage load switching when operated within thermal limits.
Packaged in a compact SOT-23 surface-mount package, the SS8550 is suitable for PNP high-side switching, LED load control, and complementary transistor driver stages. Its 100MHz transition frequency also supports general-purpose signal amplification. Appropriate base current and PCB heat dissipation are important when operating at elevated collector currents.
Specifications
Key electrical, package, and sourcing parameters for quick engineering review.
| Part Number | SS8550 |
| Brand | CNCHIPDEPOT |
| Package | SOT-23 |
| Product Type | BJT |
| Transistor Polarity | PNP |
| Collector-Emitter Voltage (VCEO) | 25 V |
| Collector Current (IC) | 1.5 A |
| DC Current Gain (hFE) | 120–400 @ IC = -100 mA, VCE = -1 V |
| Power Dissipation (PD) | 300 mW |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 500 mV Max (Magnitude) @ IC = -800 mA, IB = -80 mA |
| Transition Frequency (fT) | 100 MHz @ IC = -50 mA, VCE = -10 V |
| Collector-Base Voltage (VCBO) | 40 V |
| Emitter-Base Voltage (VEBO) | 5 V |
| Operating Temperature | -55°C to +150°C |
| Mounting Type | Surface Mount |
| Pin Configuration | 1: Base, 2: Emitter, 3: Collector |
| Collector Cutoff Current (ICBO) | 100 nA Max (Magnitude) @ VCB = -40 V |
Cross Reference & Replacement Information
The following part numbers are commonly reviewed for replacement or compatibility matching. Always verify datasheet, package, pinout, and operating conditions before bulk purchase.
| Target Brand | Target MPN | Replace Type | Notes |
|---|---|---|---|
| ON Semiconductor | 2N8550 | Functional Replacement | Similar PNP BJT characteristics, check package compatibility. |
| Toshiba | 2SA1015 | Compatible Substitute | Check gain (hFE) and power dissipation specs before use. |
| STMicroelectronics | BC327-40 | Possible Alternative | Verify voltage and current ratings match application requirements. |
| Fairchild Semiconductor | SS8550 | Exact Equivalent | Original manufacturer part, same specifications. |
Datasheet
Download the datasheet or contact us for additional technical information.
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Typical Applications
- PNP high-side load switching circuits
- Low-voltage LED driver stages
- Complementary transistor switching circuits
- Small relay and indicator control
- General-purpose PNP amplifier stages
- Compact surface-mount load control circuits
Ordering & RFQ Information
- MOQ: Contact sales
- Lead Time: 3–7 working days for stock items
- Packaging: Reel / Tube / Tray depending on package
- Sample Availability: Available on request
- Mass Production Status: 50K+ pcs Stock / Mass Production
FAQ
Can this part replace my current model?
It may be suitable depending on your circuit requirements. Please verify datasheet, package, pinout, and test samples before bulk orders.
Can I request samples?
Yes. Please submit your RFQ with target quantity and application details.
Need this part or a compatible replacement?
Send us your target part number, BOM list, quantity, and technical requirements. CNCHIPDEPOT can help review replacement options and provide RFQ support.
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Component Testing Equipment
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Quality Inspection Lab
Quality inspection processes help verify component condition, specifications and production consistency before shipment.