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BC858CW-TP Equivalent & Substitute Parts Reference
Part Overview
The BC858CW-TP by Micro Commercial Co is a PNP bipolar junction transistor (BJT) designed for general signal interface applications, specified for surface mount use in a SOT-323 package. It features a collector-emitter breakdown voltage of 30 V, a maximum collector current of 100 mA, transition frequency of 100 MHz, and a maximum power dissipation of 200 mW. The part is currently active with new inventory available. Identification of alternative models in the same product category is required to ensure design flexibility, procurement continuity, and compliance with sourcing policies.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Transistor Type | PNP |
| Voltage - Collector Emitter Breakdown (Max) | 30 V |
| Current - Collector (Ic) (Max) | 100 mA |
| Vce Saturation (Max) @ Ib, Ic | 650mV @ 5mA, 100mA |
| Current - Collector Cutoff (Max) | 15nA (ICBO) |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 420 @ 2mA, 5V |
| Power - Max | 200 mW |
| Frequency - Transition | 100MHz |
| Operating Temperature | -65°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | SC-70, SOT-323 |
Substitute Part Grouping Explanation
Substitute and equivalent parts for the BC858CW-TP are identified strictly by matching key device parameters: transistor type, collector-emitter breakdown voltage, collector current, saturation voltage, cutoff current, DC current gain, maximum power, transition frequency, operating temperature range, mounting type, and package/case specification. Only parts with identical or permitted parameter equivalence are included.
Parameter Comparison
| Parameter | BC858CW-TP Micro Commercial Co |
BC858W,135 NXP USA Inc. |
BC859CW,135 NXP Semiconductors |
|---|---|---|---|
| Transistor Type | PNP | PNP | PNP |
| Voltage - Collector Emitter Breakdown (Max) | 30 V | 30 V | 30 V |
| Current - Collector (Ic) (Max) | 100 mA | 100 mA | 100 mA |
| Vce Saturation (Max) @ Ib, Ic | 650mV @ 5mA, 100mA | 600mV @ 5mA, 100mA | 650mV @ 5mA, 100mA |
| Current - Collector Cutoff (Max) | 15nA (ICBO) | 15nA (ICBO) | 15nA (ICBO) |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 420 @ 2mA, 5V | 125 @ 2mA, 5V | 420 @ 2mA, 5V |
| Power - Max | 200 mW | 200 mW | 200 mW |
| Frequency - Transition | 100MHz | 100MHz | 100MHz |
| Operating Temperature | -65°C ~ 150°C (TJ) | 150°C (TJ) | 150°C (TJ) |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | SC-70, SOT-323 | SC-70, SOT-323 | SC-70, SOT-323 |
Engineering Selection Recommendations
All listed parts—BC858CW-TP, BC858W,135, and BC859CW,135—are active and available with new inventory. These components meet standard compliance criteria, including REACH and ECCN EAR99 status. The substitutes BC858W,135 and BC859CW,135 offer additional qualification as automotive-grade (AEC-Q101). Selection can be based on availability, required certifications, and compliance status as detailed.
Frequently Asked Questions (FAQ)
Q: What criteria are used to determine if a substitute part is compatible with BC858CW-TP?
A: Compatibility is determined by matching the transistor type, collector-emitter breakdown voltage, collector current, saturation voltage, cutoff current, DC current gain, power rating, transition frequency, operating temperature, mounting type, and package/case.
Q: Are all listed substitute parts in the same package as BC858CW-TP?
A: Yes, all listed substitutes use the SC-70, SOT-323 surface mount package, ensuring direct footprint compatibility.
Q: What is the significance of the DC current gain (hFE) parameter when choosing a substitute?
A: The DC current gain (hFE) parameter affects amplification characteristics. Substitute parts should have equivalent hFE to maintain circuit performance.
Q: Are any of these substitute transistors automotive-qualified?
A: BC858W,135 and BC859CW,135 are both classified as automotive grade and qualified to AEC-Q101.
Q: Is there a difference in maximum operating temperature?
A: BC858CW-TP specifies an operating temperature of -65°C ~ 150°C (TJ). Substitute parts specify 150°C (TJ) maximum.
Q: Are the electrical parameters for collector-emitter voltage and collector current identical among all parts?
A: Yes, all listed parts specify 30 V maximum collector-emitter breakdown voltage and 100 mA maximum collector current.
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