BC847BW/ZLF Equivalent & Substitute Parts

Part Overview

The BC847BW/ZLF is an NPN bipolar junction transistor (BJT) manufactured by Nexperia USA Inc., designed for surface mount applications in the 6-TSSOP package. This component operates at 45V maximum collector-emitter breakdown voltage with a maximum collector current of 0.1A and is rated for 200mW power dissipation. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	45 V
Current - Collector (Ic) (Max)	100 mA
Power - Max	200 mW
Mounting Type	Surface Mount
Package / Case	6-TSSOP, SC-88, SOT-363
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the BC847BW/ZLF is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Transistor Type: NPN configuration
Voltage - Collector Emitter Breakdown (Max): 45 V minimum
Current - Collector (Ic) (Max): 100 mA minimum
Power - Max: 200 mW minimum

Mechanical Compatibility Criteria:

Mounting Type: Surface Mount
Package / Case: SOT-323 (SC-70) or equivalent footprint compatibility
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Compliance Requirements:

RoHS Status: ROHS3 Compliant
REACH Status: REACH Unaffected

The substitute parts listed below meet or exceed these parameters and are classified as active products, providing viable alternatives to the obsolete BC847BW/ZLF. Package variations between 6-TSSOP and SOT-323 represent different physical form factors; SOT-323 packages are smaller and widely available from multiple manufacturers.

Parameter Comparison

Part Number	Manufacturer	Transistor Type	Vce Breakdown (Max)	Ic (Max)	Power (Max)	Frequency - Transition	DC Current Gain (hFE) @ 2mA, 5V	Package	Product Status
BC847BW/ZLF	Nexperia USA Inc.	NPN	45 V	100 mA	200 mW	Not specified	Not specified	6-TSSOP	Obsolete
BC847BW,135	Nexperia USA Inc.	NPN	45 V	100 mA	200 mW	100 MHz	200	SOT-323	Active
BC847BW-TP	Micro Commercial Co	NPN	45 V	100 mA	Not specified	100 MHz	200	SOT-323	Active
BC847CW-7-F	Diodes Incorporated	NPN	45 V	100 mA	200 mW	300 MHz	420	SOT-323	Active
BC847CW-TP	Micro Commercial Co	NPN	45 V	100 mA	Not specified	100 MHz	420	SOT-323	Active
BC850CW RFG	Taiwan Semiconductor Corporation	NPN	45 V	100 mA	200 mW	100 MHz	420	SOT-323	Active
SBC847AWT1G	onsemi	NPN	45 V	100 mA	150 mW	100 MHz	110	SC-70 (SOT-323)	Active
SBC847CWT1G	onsemi	NPN	45 V	100 mA	150 mW	100 MHz	420	SC-70 (SOT-323)	Active
SBC847CWT3G	onsemi	NPN	45 V	100 mA	150 mW	100 MHz	420	SC-70 (SOT-323)	Active

Engineering Selection Recommendations

Primary Substitutes (Nexperia Manufacturer): BC847BW,135 is the direct equivalent from the same manufacturer (Nexperia USA Inc.) and maintains the BC847 base product designation. This part is active and provides the closest functional match with identical electrical ratings and ROHS3 compliance.

Alternative Substitutes (Multi-Source Options): BC847BW-TP (Micro Commercial Co) and BC847CW-TP (Micro Commercial Co) provide active alternatives with identical core electrical specifications. These parts are available in high inventory quantities and maintain ROHS3 compliance.

Enhanced Performance Alternatives: BC847CW-7-F (Diodes Incorporated) and BC850CW RFG (Taiwan Semiconductor Corporation) offer higher DC current gain (420 vs. 200) and extended frequency response (300 MHz vs. 100 MHz), providing performance headroom for applications requiring improved switching characteristics while maintaining the 45V/100mA electrical envelope.

Automotive-Grade Options: SBC847CWT1G and SBC847CWT3G (onsemi) are automotive-qualified components with AEC-Q101 certification. These parts feature identical electrical specifications to the BC847CW variants but with automotive-grade qualification. Power rating is 150mW versus 200mW for standard variants.

Compliance Status: All substitute parts listed are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. Moisture sensitivity level remains at MSL 1 (Unlimited) across all alternatives.

Frequently Asked Questions (FAQ)

Q: Can BC847BW,135 directly replace BC847BW/ZLF in existing designs? A: BC847BW,135 meets all electrical specifications (45V breakdown, 100mA collector current, 200mW power) and maintains ROHS3 compliance. The primary difference is package format: BC847BW,135 uses SOT-323 (smaller footprint) versus the original 6-TSSOP. PCB layout modification is required for package conversion.

Q: What is the difference between BC847 and BC850 series transistors? A: Both series share identical electrical ratings (45V, 100mA, 200mW). The BC850 designation indicates a different manufacturer variant. BC850CW RFG from Taiwan Semiconductor Corporation provides equivalent functionality with higher DC current gain (420 vs. 200 at 2mA, 5V).

Q: Are onsemi SBC847 parts suitable for non-automotive applications? A: Yes. SBC847CWT1G and SBC847CWT3G are automotive-qualified (AEC-Q101) but function in standard commercial applications. These parts provide additional qualification margin and reliability assurance. The 150mW power rating is lower than standard variants; verify thermal requirements in your application.

Q: What is the significance of the "C" designation in BC847C variants? A: The "C" suffix indicates higher DC current gain (hFE minimum of 420 at 2mA, 5V) compared to "B" variants (hFE minimum of 200). Both meet the same voltage and current specifications. Selection depends on required gain characteristics for your circuit design.

Q: Can I use SOT-323 packaged parts as direct replacements for 6-TSSOP? A: Electrical substitution is valid; mechanical substitution requires PCB redesign. SOT-323 (SC-70) is a smaller three-lead package compared to 6-TSSOP. Footprint, trace routing, and thermal management considerations differ. Verify PCB layout compatibility before implementation.

Q: Which substitute offers the best inventory availability? A: BC847CW-TP (Micro Commercial Co) maintains the highest inventory level at 5,000,300 pieces. BC850CW RFG (Taiwan Semiconductor Corporation) provides 18,948 pieces. Both are active products with consistent supply.

Q: Are all listed substitutes ROHS3 compliant? A: Yes. All substitute parts listed meet ROHS3 compliance requirements and are REACH unaffected, satisfying current environmental and regulatory standards.

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