BC847CWT1 Equivalent & Substitute Parts

Part Overview

The BC847CWT1 is an NPN bipolar junction transistor manufactured by onsemi, housed in a surface mount SC-70 (SOT-323) package. This device is rated for 45 V collector-emitter breakdown voltage, 100 mA maximum collector current, and 150 mW power dissipation with a transition frequency of 100 MHz. The BC847CWT1 is classified as obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and accommodate evolving manufacturing standards including RoHS compliance requirements.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Collector-Emitter Breakdown Voltage (Max)	45	V
Collector Current (Max)	100	mA
Power Dissipation (Max)	150	mW
Transition Frequency	100	MHz
DC Current Gain (hFE Min) @ Ic, Vce	420 @ 2mA, 5V	—
Vce Saturation (Max) @ Ib, Ic	600mV @ 5mA, 100mA	—
Collector Cutoff Current (Max)	15	nA
Operating Temperature Range	-55 to 150	°C
Package Type	SC-70, SOT-323	—
Mounting Type	Surface Mount	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BC847CWT1 is determined by strict equivalence across the following critical parameters: transistor type (NPN), collector-emitter breakdown voltage (45 V), maximum collector current (100 mA), package configuration (SC-70/SOT-323 surface mount), and DC current gain specification (420 @ 2mA, 5V). Substitute parts are grouped into three categories based on their relationship to the main part:

Direct Manufacturer Equivalents maintain identical electrical specifications and package type but differ in product status (active versus obsolete) or packaging format (tape & reel versus cut tape). These parts are pin-for-pin compatible and require no circuit modifications.

Parametric Equivalents meet all critical electrical specifications and package requirements but may include automotive-grade qualification (AEC-Q101) or alternative manufacturer sourcing. These parts are functionally interchangeable within the specified parameter ranges.

Similar Parts share the same base product family (BC817 series) and package type but operate at different current ratings (500 mA versus 100 mA). These parts are suitable only when circuit design permits higher current capability and do not represent direct substitutes for the BC847CWT1.

Parameter Comparison

Part Number	Manufacturer	Product Status	Ic (Max) mA	Vce(br) V	Power mW	Frequency MHz	Vce Sat mV	Package	RoHS Status
BC847CWT1	onsemi	Obsolete	100	45	150	100	600	SC-70	Non-compliant
BC847CWT1G	onsemi	Active	100	45	150	100	600	SC-70	ROHS3 Compliant
BC847CWT3G	onsemi	Active	100	45	150	100	600	SC-70	ROHS3 Compliant
SBC847CWT1G	onsemi	Active	100	45	150	100	600	SC-70	ROHS3 Compliant
SBC847CWT3G	onsemi	Active	100	45	150	100	600	SC-70	ROHS3 Compliant
BC847CT-TP	Micro Commercial Co	Active	100	45	150	100	600	SOT-523	ROHS3 Compliant
BC847CW,115	Nexperia USA Inc.	Active	100	45	200	100	400	SOT-323	ROHS3 Compliant
BC847CW-7-F	Diodes Incorporated	Active	100	45	200	300	600	SOT-323	ROHS3 Compliant
BC847CW,135	Nexperia USA Inc.	Active	100	45	200	100	400	SOT-323	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

BC847CWT1G and BC847CWT3G from onsemi are the preferred direct substitutes. Both parts maintain identical electrical specifications to the BC847CWT1 while offering active product status and ROHS3 compliance. These parts are sourced in tape & reel packaging format suitable for automated assembly processes. Selection between CWT1G and CWT3G variants is based on internal gain grouping specifications; both are electrically equivalent for general application use.

Automotive-Grade Alternatives:

SBC847CWT1G and SBC847CWT3G are automotive-qualified variants (AEC-Q101) manufactured by onsemi. These parts meet all electrical specifications of the BC847CWT1 and provide enhanced reliability for automotive and industrial applications requiring qualification documentation. These parts are suitable for designs requiring automotive-grade component certification.

Alternative Manufacturer Options:

BC847CT-TP from Micro Commercial Co provides electrical equivalence in SOT-523 package format. This part is suitable when SOT-523 package compatibility exists in the design. BC847CW,115 and BC847CW,135 from Nexperia USA Inc. offer increased power dissipation (200 mW versus 150 mW) and reduced saturation voltage (400 mV versus 600 mV), providing performance margin in applications with higher power requirements. BC847CW-7-F from Diodes Incorporated provides the highest transition frequency (300 MHz versus 100 MHz) for applications requiring enhanced high-frequency performance.

Compliance Considerations:

All recommended substitute parts are ROHS3 compliant, addressing the non-compliance status of the obsolete BC847CWT1. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating and REACH unaffected status, ensuring compatibility with existing supply chain and assembly processes.

Frequently Asked Questions (FAQ)

Q: Can BC847CWT1G directly replace BC847CWT1 in existing designs?

A: Yes. BC847CWT1G is a direct electrical and mechanical equivalent with identical specifications. The primary difference is product status (active versus obsolete) and ROHS3 compliance. No circuit modifications are required.

Q: What is the difference between BC847CWT1G and BC847CWT3G?

A: Both parts are electrically identical with 45 V breakdown voltage, 100 mA collector current, and 100 MHz transition frequency. The designation difference (CWT1G versus CWT3G) reflects internal gain grouping classifications. Either part is suitable for general applications without performance distinction.

Q: Are SBC847CWT1G and SBC847CWT3G suitable for non-automotive applications?

A: Yes. The SBC847 automotive-qualified variants meet all electrical specifications of the standard BC847CWT1 and are suitable for any application within the specified parameter range. Automotive qualification provides additional reliability assurance without restricting use to automotive applications.

Q: What is the significance of the package designation difference between SC-70 and SOT-523?

A: SC-70 and SOT-523 are equivalent package designations for the same three-lead surface mount package. BC847CT-TP uses SOT-523 nomenclature while BC847CWT1G uses SC-70 nomenclature. Both packages are physically and electrically identical and are interchangeable in designs supporting this package type.

Q: How do BC847CW,115 and BC847CW,135 differ from BC847CWT1?

A: BC847CW,115 and BC847CW,135 offer increased power dissipation (200 mW versus 150 mW) and lower saturation voltage (400 mV versus 600 mV). These improvements provide additional performance margin in power-sensitive applications. All other electrical specifications remain equivalent. These parts are suitable as upgrades when circuit design permits the enhanced specifications.

Q: Is BC847CW-7-F compatible with BC847CWT1 applications?

A: BC847CW-7-F is electrically compatible with identical collector current, breakdown voltage, and DC current gain specifications. The primary difference is transition frequency (300 MHz versus 100 MHz), providing enhanced high-frequency performance. This part is suitable for applications requiring higher frequency response without modification to existing designs.

Q: What packaging formats are available for BC847 equivalents?

A: BC847CWT1G and BC847CWT3G are supplied in tape & reel format for automated assembly. BC847CW,115 and BC847CW,135 are available in cut tape and digi-reel format. BC847CT-TP is supplied in bulk packaging. Selection depends on assembly process requirements and order quantity specifications.

Q: Are all substitute parts ROHS compliant?

A: Yes. All recommended substitute parts are ROHS3 compliant. The original BC847CWT1 is RoHS non-compliant. Substitution with any recommended equivalent part addresses RoHS compliance requirements for new designs and manufacturing processes.

Q: Can BC817-16W-TP or BC817-25W-TP replace BC847CWT1?

A: No. BC817 series parts are not direct substitutes. While both are NPN transistors in SC-70/SOT-323 packages with 45 V breakdown voltage, BC817 variants are rated for 500 mA collector current versus 100 mA for BC847CWT1. BC817 parts are suitable only when circuit design specifically requires higher current capability and cannot be used as direct replacements.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message