BC856BW-TP Equivalent & Substitute Parts

Part Overview

The BC856BW-TP is a PNP bipolar junction transistor manufactured by Micro Commercial Co, designed for general-purpose switching and amplification applications. This surface mount device operates at 65 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and transition frequency of 100 MHz. The part is actively produced and RoHS3 compliant with unlimited moisture sensitivity rating. Substitute parts are identified when design requirements necessitate alternative sourcing, higher inventory availability, automotive qualification, or enhanced power dissipation capabilities while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) Max	100	mA
Voltage - Collector Emitter Breakdown (Max)	65	V
Vce Saturation (Max) @ Ib, Ic	650 mV @ 5 mA, 100 mA	—
Current - Collector Cutoff (Max)	15	nA
DC Current Gain (hFE) Min @ Ic, Vce	220 @ 2 mA, 5 V	—
Power - Max	150	mW
Frequency - Transition	100	MHz
Operating Temperature Range	-65 to 150	°C
Package / Case	SC-70, SOT-323	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BC856BW-TP is determined by equivalence across the following critical parameters: transistor type (PNP), maximum collector current (100 mA), collector-emitter breakdown voltage (65 V), transition frequency (100 MHz), package format (SOT-323/SC-70), and surface mount configuration. Parts are grouped into two categories based on electrical performance:

Category 1: Parametric Equivalents — Parts with identical electrical specifications including Vce saturation (650 mV), DC current gain (hFE 220 @ 2 mA, 5 V), and power dissipation (150 mW). These parts are direct functional replacements with no performance trade-offs.

Category 2: Functional Equivalents — Parts with equivalent core ratings (65 V, 100 mA, 100 MHz) but enhanced power dissipation (200 mW) and reduced Vce saturation (600 mV). These parts provide improved performance margins and automotive qualification but maintain full backward compatibility.

All substitute parts maintain RoHS3 compliance, unlimited moisture sensitivity rating, and SOT-323 package compatibility.

Parameter Comparison

Parameter	BC856BW-TP (Micro Commercial Co)	BC856AW,115 (Nexperia USA Inc.)	BC856W,135 (NXP USA Inc.)	BC856BWT1G (onsemi)	SBC856BWT1G (onsemi)
Transistor Type	PNP	PNP	PNP	PNP	PNP
Current - Collector (Ic) Max	100 mA	100 mA	100 mA	100 mA	100 mA
Voltage - Collector Emitter Breakdown (Max)	65 V	65 V	65 V	65 V	65 V
Vce Saturation (Max) @ Ib, Ic	650 mV @ 5 mA, 100 mA	600 mV @ 5 mA, 100 mA	600 mV @ 5 mA, 100 mA	650 mV @ 5 mA, 100 mA	650 mV @ 5 mA, 100 mA
Current - Collector Cutoff (Max)	15 nA	15 nA	15 nA	15 nA	15 nA
DC Current Gain (hFE) Min @ Ic, Vce	220 @ 2 mA, 5 V	125 @ 2 mA, 5 V	125 @ 2 mA, 5 V	220 @ 2 mA, 5 V	220 @ 2 mA, 5 V
Power - Max	150 mW	200 mW	200 mW	150 mW	150 mW
Frequency - Transition	100 MHz	100 MHz	100 MHz	100 MHz	100 MHz
Operating Temperature Range	-65 to 150 °C	to 150 °C	to 150 °C	-55 to 150 °C	-55 to 150 °C
Package / Case	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant
Automotive Grade	Not specified	Yes (AEC-Q101)	Yes (AEC-Q101)	Not specified	Yes (AEC-Q101)

Engineering Selection Recommendations

BC856BWT1G (onsemi) — This part provides parametric equivalence to the BC856BW-TP with identical electrical specifications (Vce saturation 650 mV, hFE 220, 150 mW power dissipation). The part is actively produced, RoHS3 compliant, and available in high volume (38,100 units in stock). Operating temperature range extends to -55°C minimum, which is narrower than the BC856BW-TP (-65°C minimum). This part is suitable for direct replacement in applications where the lower temperature limit is acceptable.

SBC856BWT1G (onsemi) — This automotive-qualified variant (AEC-Q101) maintains identical electrical specifications to the BC856BW-TP while providing automotive-grade reliability. The part is actively produced, RoHS3 compliant, and available in substantial volume (17,463 units in stock). Operating temperature range is -55 to 150°C. Selection of this part is appropriate for automotive applications or designs requiring AEC-Q101 qualification.

BC856AW,115 (Nexperia USA Inc.) — This part offers enhanced power dissipation (200 mW versus 150 mW) and improved saturation characteristics (600 mV versus 650 mV Vce saturation). DC current gain is reduced to 125 (versus 220 minimum). The part carries automotive qualification (AEC-Q101) and is actively produced with high inventory availability (4,100 units in stock). This part is suitable for applications requiring higher power handling or lower saturation voltage, with the trade-off of lower current gain.

BC856W,135 (NXP USA Inc.) — This part provides equivalent electrical performance to BC856AW,115 with enhanced power dissipation (200 mW) and improved saturation characteristics (600 mV Vce saturation). The part carries automotive qualification (AEC-Q101) and is actively produced with the highest inventory availability (25,279 units in stock). Packaging is specified as Bulk rather than Tape & Reel. This part is suitable for high-volume applications requiring automotive qualification and enhanced power margins.

Frequently Asked Questions (FAQ)

Q: Can BC856BWT1G be used as a direct replacement for BC856BW-TP?

A: Yes. BC856BWT1G provides parametric equivalence with identical Vce saturation (650 mV), DC current gain (hFE 220), and power dissipation (150 mW). Both parts are SOT-323 surface mount packages. The operating temperature minimum of -55°C for BC856BWT1G is higher than the -65°C minimum of BC856BW-TP; verify this meets application requirements.

Q: What is the difference between BC856BWT1G and SBC856BWT1G?

A: Both parts are manufactured by onsemi and provide identical electrical specifications. SBC856BWT1G carries automotive qualification (AEC-Q101) while BC856BWT1G does not. Both operate across -55 to 150°C. Selection depends on whether automotive-grade reliability is required.

Q: Why do BC856AW,115 and BC856W,135 have lower DC current gain (hFE 125) compared to BC856BW-TP (hFE 220)?

A: These parts are from different manufacturers (Nexperia/NXP) and represent a different device variant within the BC856 family. The lower hFE is offset by enhanced power dissipation (200 mW versus 150 mW) and improved saturation characteristics (600 mV versus 650 mV). These parts are suitable for applications where power handling and saturation performance are prioritized over current gain.

Q: Are all substitute parts RoHS3 compliant?

A: BC856BWT1G, SBC856BWT1G, and BC856AW,115 are explicitly specified as ROHS3 compliant. BC856W,135 does not specify RoHS status in the provided data. Verify RoHS compliance with the supplier if this is a design requirement.

Q: What packaging formats are available for these parts?

A: BC856BW-TP, BC856AW,115, BC856BWT1G, and SBC856BWT1G are supplied in Tape & Reel (TR) format. BC856W,135 is supplied in Bulk format. All parts use SOT-323 (SC-70) surface mount package. Confirm packaging requirements with procurement before selection.

Q: Can these parts be used in automotive applications?

A: BC856AW,115, BC856W,135, and SBC856BWT1G carry AEC-Q101 automotive qualification. BC856BW-TP and BC856BWT1G do not specify automotive qualification. For automotive applications, select from the AEC-Q101 qualified variants.

Q: What is the moisture sensitivity level for all these parts?

A: All parts specified in this reference carry Moisture Sensitivity Level (MSL) 1, which indicates unlimited shelf life and no special moisture control requirements during storage or handling.

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