BC847BW-TP Equivalent & Substitute Parts

Part Overview

The BC847BW-TP is an NPN bipolar junction transistor manufactured by Micro Commercial Co in SOT-323 surface mount packaging. This small-signal transistor operates at 45 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and transition frequency of 100 MHz. The device is classified as Active product status with ROHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter ranges. Alternative sources and variants exist due to manufacturing availability, supply chain considerations, and design flexibility within the BC847 family specifications.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	45	V
Current - Collector (Ic) (Max)	100	mA
Vce Saturation (Max) @ Ib, Ic	600 mV @ 5 mA, 100 mA	—
DC Current Gain (hFE) (Min) @ Ic, Vce	200 @ 2 mA, 5 V	—
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 (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution eligibility for the BC847BW-TP is determined by the following critical parameters:

Electrical Compatibility Requirements:

Transistor Type: NPN
Voltage - Collector Emitter Breakdown (Max): 45 V or greater
Current - Collector (Ic) (Max): 100 mA or greater
DC Current Gain (hFE) (Min): 200 or greater at specified bias conditions
Frequency - Transition: 100 MHz or greater

Mechanical Compatibility Requirements:

Package / Case: SC-70 or SOT-323
Mounting Type: Surface Mount
Supplier Device Package: SOT-323 or SC-70-3 (SOT323)

Compliance Requirements:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)
Product Status: Active

Substitute parts are grouped into three categories: Direct equivalents maintain identical electrical specifications and packaging; Upgrade variants provide enhanced performance characteristics while maintaining backward compatibility; Similar variants operate within the BC847 family with minor parameter variations that remain functionally compatible.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce Breakdown (Max) V	hFE (Min) @ 2mA, 5V	Frequency MHz	Temp Range °C	Package	Power mW
BC847BW-TP	Micro Commercial Co	100	45	200	100	-65 to 150	SOT-323	—
BC847BW,135	Nexperia USA Inc.	100	45	200	100	-40 to 150	SOT-323	200
BC847BW-7-F	Diodes Incorporated	100	45	200	300	-65 to 150	SOT-323	200
BC847BWT1G	onsemi	100	45	200	100	-55 to 150	SOT-323	150
BC850BW,115	Nexperia USA Inc.	100	45	200	100	-40 to 150	SOT-323	200
BC850BW,135	Nexperia USA Inc.	100	45	200	100	-40 to 150	SOT-323	200
BC847AW RFG	Taiwan Semiconductor Corporation	100	45	110	100	-55 to 150	SOT-323	200
BC847AW,135	Nexperia USA Inc.	100	45	110	100	-40 to 150	SOT-323	200
BC847BW RFG	Taiwan Semiconductor Corporation	100	45	200	100	-55 to 150	SOT-323	200
BC847BW,115	NXP USA Inc.	100	45	200	100	-40 to 150	SOT-323	200
MSD1819A-RT1G	onsemi	100	50	210	—	-40 to 150	SOT-323	150

Engineering Selection Recommendations

Direct Equivalent Selection:

BC847BW,135 (Nexperia USA Inc.) and BC847BW RFG (Taiwan Semiconductor Corporation) provide direct electrical equivalence to the BC847BW-TP. Both maintain 100 mA collector current, 45 V breakdown voltage, 200 minimum hFE, and 100 MHz transition frequency. Both are ROHS3 compliant with MSL 1 rating and Active product status. Selection between these options depends on supply chain availability and manufacturing source preference.

Enhanced Performance Option:

BC847BW-7-F (Diodes Incorporated) offers upgraded transition frequency of 300 MHz while maintaining all other electrical specifications identical to the main part. This variant is suitable for applications requiring higher frequency performance within the same voltage and current envelope. Operating temperature range matches the original specification (-65°C to 150°C).

Automotive Grade Alternatives:

BC850BW,115 and BC850BW,135 (Nexperia USA Inc.) are automotive-qualified variants with AEC-Q101 certification. These parts maintain electrical equivalence with 100 mA, 45 V, 200 hFE, and 100 MHz specifications. Selection of these parts is required for automotive applications demanding AEC-Q101 qualification.

Lower Gain Variants:

BC847AW RFG (Taiwan Semiconductor Corporation) and BC847AW,135 (Nexperia USA Inc.) provide minimum hFE of 110 at specified bias conditions, compared to 200 for the main part. These variants are suitable for applications where lower current gain is acceptable and may offer cost or availability advantages.

Extended Voltage Rating Option:

MSD1819A-RT1G (onsemi) provides 50 V collector-emitter breakdown voltage, exceeding the 45 V specification of the main part. This variant is applicable in designs requiring higher voltage margin while maintaining 100 mA current and similar frequency characteristics.

Frequently Asked Questions (FAQ)

Q: Can BC847BW,135 directly replace BC847BW-TP in all applications?

A: BC847BW,135 maintains electrical equivalence across all critical parameters: 100 mA collector current, 45 V breakdown voltage, 200 minimum hFE, and 100 MHz transition frequency. Both are ROHS3 compliant with MSL 1 rating. The primary difference is operating temperature range: BC847BW-TP operates -65°C to 150°C while BC847BW,135 operates -40°C to 150°C. Selection depends on whether the application requires the extended low-temperature performance of the original part.

Q: What is the difference between BC847BW and BC850BW variants?

A: BC847BW and BC850BW are both NPN transistors in the SOT-323 package with identical electrical specifications: 100 mA, 45 V, 200 hFE, and 100 MHz. The BC850BW variants carry automotive AEC-Q101 qualification, making them suitable for automotive applications. Selection between these families depends on application requirements for automotive certification.

Q: Why would BC847BW-7-F be selected over BC847BW-TP?

A: BC847BW-7-F offers 300 MHz transition frequency compared to 100 MHz for BC847BW-TP, while maintaining identical voltage, current, and gain specifications. This enhanced frequency performance is beneficial in high-speed switching applications. The part is suitable for direct substitution when higher frequency capability is required.

Q: Are BC847AW variants compatible with BC847BW applications?

A: BC847AW variants have minimum hFE of 110 compared to 200 for BC847BW. Both maintain 100 mA, 45 V, and 100 MHz specifications. Compatibility depends on circuit design: applications with gain-dependent biasing may require design adjustment. Applications with fixed base resistor biasing typically tolerate the lower gain without modification.

Q: What packaging options are available for BC847BW-TP substitutes?

A: All listed substitute parts use SC-70 or SOT-323 surface mount packaging, maintaining mechanical compatibility with BC847BW-TP. BC847BWT1G is supplied in Cut Tape (CT) & Digi-Reel packaging, while most other variants use standard Tape & Reel (TR) packaging. Packaging format selection depends on assembly process requirements.

Q: Is MSD1819A-RT1G suitable as a substitute for BC847BW-TP?

A: MSD1819A-RT1G provides 50 V collector-emitter breakdown voltage, exceeding the 45 V specification. It maintains 100 mA collector current and similar frequency characteristics. This part is suitable for applications where higher voltage rating provides design margin. The transition frequency specification is not provided for this part.

Q: What compliance certifications apply to all substitute parts?

A: All listed substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity level and REACH Unaffected status. BC850BW,115 and BC850BW,135 additionally carry AEC-Q101 automotive qualification. All parts are classified as Active product status.

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