BCW70,235 Equivalent & Substitute Parts

Part Overview

The BCW70,235 is a PNP bipolar junction transistor manufactured by Nexperia USA Inc., designed for surface mount applications in the TO-236AB package. This component operates at a maximum collector current of 100 mA, collector-emitter breakdown voltage of 45 V, and maximum power dissipation of 250 mW. The device is qualified to AEC-Q101 automotive standards and maintains active product status. Equivalent and substitute parts are identified based on matching or exceeding electrical performance parameters while maintaining compatible mechanical packaging and compliance certifications.

Key Parameters

Parameter	BCW70,235 Specification
Transistor Type	PNP
Current - Collector (Ic) Max	100 mA
Voltage - Collector Emitter Breakdown (Max)	45 V
Vce Saturation (Max) @ Ib, Ic	150 mV @ 2.5 mA, 50 mA
Current - Collector Cutoff (Max)	100 nA (ICBO)
DC Current Gain (hFE) Min @ Ic, Vce	215 @ 2 mA, 5 V
Power - Max	250 mW
Frequency - Transition	100 MHz
Operating Temperature (TJ)	150°C
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
Grade	Automotive
Qualification	AEC-Q101
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the BCW70,235 are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes maintain identical electrical specifications and automotive qualification. These parts satisfy applications requiring exact parameter matching without design modification.

Similar Substitutes provide equivalent or superior electrical performance within the same package family but may differ in specific parameters such as maximum collector current, power dissipation, or DC current gain. These parts are suitable for applications where the BCW70,235 specifications represent a design margin, and higher performance ratings do not create circuit incompatibility.

Substitution eligibility is determined by the following key parameters:

Transistor type (PNP)
Collector-emitter breakdown voltage (45 V minimum)
Package compatibility (TO-236-3, SC-59, SOT-23-3)
Surface mount mounting type
RoHS3 compliance
Operating temperature range (minimum 150°C TJ)

Parameter Comparison

Part Number	Manufacturer	Ic Max (mA)	Vce Breakdown (V)	Power Max (mW)	hFE Min @ Ic, Vce	Frequency (MHz)	Package	Grade	AEC-Q101
BCW70,235	Nexperia USA Inc.	100	45	250	215 @ 2mA, 5V	100	TO-236AB	Automotive	Yes
BCW70,215	Nexperia USA Inc.	100	45	250	215 @ 2mA, 5V	100	TO-236AB	Automotive	Yes
BCW70LT1G	onsemi	100	45	225	215 @ 2mA, 5V	—	SOT-23-3	—	—
BC807-16-7-F	Diodes Incorporated	500	45	310	100 @ 100mA, 1V	100	SOT-23-3	—	—
BC807-16LT1G	onsemi	500	45	300	100 @ 100mA, 1V	100	SOT-23-3	—	—
BC807-16LT3G	onsemi	500	45	300	100 @ 100mA, 1V	100	SOT-23-3	—	—
BC807-25-TP	Micro Commercial Co	500	45	300	160 @ 100mA, 1V	100	SOT-23	—	—
BC807-25LT1G	onsemi	500	45	300	160 @ 100mA, 1V	100	SOT-23-3	—	—
BC807-25LT3G	onsemi	500	45	300	160 @ 100mA, 1V	100	SOT-23-3	—	—
BC807-40-7-F	Diodes Incorporated	500	45	310	250 @ 100mA, 1V	100	SOT-23-3	—	—
BC807-40-TP	Micro Commercial Co	500	45	300	250 @ 100mA, 1V	100	SOT-23	—	—

Engineering Selection Recommendations

Direct Substitution (Identical Specifications):

BCW70,215 from Nexperia USA Inc. is a direct substitute for BCW70,235. Both parts share identical electrical specifications, automotive grade qualification, AEC-Q101 certification, and TO-236AB packaging. This part maintains full compatibility with existing designs without circuit modification.

Functional Substitution (Compatible Performance):

BCW70LT1G from onsemi provides equivalent electrical performance at the specified operating point (100 mA collector current, 45 V breakdown voltage) with identical DC current gain specification. The part is packaged in SOT-23-3 (TO-236), which is mechanically compatible with the original TO-236AB package. Power dissipation is rated at 225 mW, which is within acceptable margin for applications designed around the 250 mW BCW70,235 specification. This part does not carry automotive grade or AEC-Q101 qualification.

Higher Current Capability Substitutes:

BC807 series parts (BC807-16-7-F, BC807-16LT1G, BC807-16LT3G, BC807-25-TP, BC807-25LT1G, BC807-25LT3G, BC807-40-7-F, BC807-40-TP) provide 500 mA maximum collector current and 300–310 mW power dissipation. These parts maintain 45 V collector-emitter breakdown voltage and 100 MHz transition frequency. DC current gain varies by part number (100, 160, or 250 @ 100 mA, 1 V). These substitutes are suitable for applications requiring higher current handling capacity within the same voltage and frequency envelope. None of these parts carry automotive grade or AEC-Q101 qualification.

All substitute parts listed maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can BCW70,215 replace BCW70,235 in automotive applications?

A: Yes. BCW70,215 is a direct substitute with identical electrical specifications, automotive grade, and AEC-Q101 qualification. No circuit modification is required.

Q: What is the difference between BCW70,235 and BCW70LT1G?

A: Both parts are PNP transistors with 100 mA maximum collector current and 45 V breakdown voltage. BCW70,235 is manufactured by Nexperia with automotive qualification; BCW70LT1G is manufactured by onsemi without automotive qualification. BCW70LT1G has slightly lower power dissipation (225 mW vs. 250 mW). Both use compatible SOT-23-3 packaging.

Q: Can I use BC807 series parts instead of BCW70,235?

A: BC807 series parts are functionally compatible in applications where higher collector current (500 mA) is acceptable. All BC807 variants maintain 45 V breakdown voltage and 100 MHz transition frequency. However, BC807 parts do not carry automotive qualification. Circuit design must account for differences in DC current gain and saturation voltage characteristics.

Q: Are all substitute parts in the same package?

A: All parts use compatible surface mount packages within the TO-236 family (TO-236-3, SC-59, SOT-23-3, or SOT-23). These packages are mechanically interchangeable on standard PCB layouts. Verify specific package designation with component datasheet for exact pin configuration.

Q: Which substitute part has the highest current gain?

A: BC807-40-7-F and BC807-40-TP both specify minimum DC current gain of 250 @ 100 mA, 1 V. This is higher than BCW70,235 (215 @ 2 mA, 5 V) and other BC807 variants (100 or 160 @ 100 mA, 1 V). Higher current gain reduces base drive requirements in switching applications.

Q: Is automotive qualification required for my application?

A: Automotive qualification (AEC-Q101) is required for components used in automotive systems subject to automotive industry standards. BCW70,235 and BCW70,215 carry this qualification. BC807 series and BCW70LT1G do not. Verify application requirements before substitution.

Q: What is the operating temperature range for each part?

A: BCW70,235 and BCW70,215 specify maximum junction temperature of 150°C. BCW70LT1G and all BC807 variants specify operating temperature range of −55°C to 150°C. All parts are suitable for standard industrial and automotive temperature environments.

Q: Can I substitute a higher power-rated part in a current-limited circuit?

A: Yes, if the circuit design does not depend on specific power dissipation characteristics. BC807 series parts rated at 300–310 mW can replace BCW70,235 (250 mW) in applications where the transistor operates below its maximum power rating. Verify that saturation voltage and current gain differences do not affect circuit performance.

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