BCW72T116 Equivalent & Substitute Parts

Part Overview

The BCW72T116 is a small-signal NPN bipolar junction transistor manufactured by Rohm Semiconductor in the SST3 surface mount package. This device is rated for 45 V collector-emitter breakdown voltage and 100 mA maximum collector current, making it suitable for general-purpose switching and amplification applications. The part carries a "Not For New Designs" status, indicating that Rohm Semiconductor has discontinued active development for this specific model number. Equivalent and substitute parts from active manufacturers provide direct functional replacement with maintained electrical specifications and improved availability.

Key Parameters

Parameter	BCW72T116 Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	100	mA
Voltage - Collector Emitter Breakdown (Max)	45	V
DC Current Gain (hFE) Min @ Ic, Vce	200 @ 2mA, 5V	—
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BCW72T116 is determined by strict electrical and mechanical parameter matching. All substitute parts must meet the following criteria:

Critical Matching Parameters:

Transistor Type: NPN
Maximum Collector Current (Ic): 100 mA
Maximum Collector-Emitter Breakdown Voltage: 45 V
Minimum DC Current Gain (hFE): 200 @ 2mA, 5V
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3 (pin-compatible)
RoHS3 Compliance
Moisture Sensitivity Level: 1 (Unlimited)

Substitute parts may exceed the main part's specifications in secondary parameters such as transition frequency, maximum power dissipation, and operating temperature range without affecting functional compatibility. All listed substitutes are from active manufacturers with current product status, ensuring long-term availability and supply chain reliability.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce Breakdown (Max) V	hFE (Min) @ 2mA, 5V	Package	Product Status	Frequency - Transition MHz	Power - Max mW
BCW72T116	Rohm Semiconductor	100	45	200	SOT-23-3	Not For New Designs	—	—
BC847B,215	Nexperia USA Inc.	100	45	200	SOT-23-3	Active	100	250
BC847B-7-F	Diodes Incorporated	100	45	200	SOT-23-3	Active	300	300
BC847B-TP	Micro Commercial Co	100	45	200	SOT-23-3	Active	100	225
BC847BLT3G	onsemi	100	45	200	SOT-23-3	Active	100	300
BC847C-13-F	Diodes Incorporated	100	45	200	SOT-23-3	Active	300	310
BC850B,215	Nexperia USA Inc.	100	45	200	SOT-23-3	Active	100	250
BC850BLT1G	onsemi	100	45	200	SOT-23-3	Active	100	225
BCW72,215	Nexperia USA Inc.	100	45	200	SOT-23-3	Active	100	250
BCW72,235	NXP Semiconductors	100	45	200	SOT-23-3	Active	100	250
BCW72LT1G	onsemi	100	45	200	SOT-23-3	Active	300	300

Engineering Selection Recommendations

All listed substitute parts satisfy the electrical and mechanical requirements for direct replacement of the BCW72T116. Selection among substitutes should be based on the following factors:

Product Status and Supply Chain: All substitute parts carry Active product status from their respective manufacturers, ensuring continued availability and manufacturing support. The BCW72T116's "Not For New Designs" designation makes transition to an active equivalent necessary for long-term design sustainability.

Compliance and Certifications: All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental specifications. Nexperia USA Inc. and NXP Semiconductors variants (BC847B,215, BCW72,215, BCW72,235) include AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade components.

Packaging and Availability: Substitute parts are available in both Tape & Reel (TR) and Cut Tape (CT) packaging formats. Micro Commercial Co's BC847B-TP offers the highest inventory level (1,000,100 pcs), providing superior supply chain security. Nexperia and onsemi variants provide mid-range to high inventory levels (6,733 to 129,300 pcs).

Performance Headroom: Substitute parts from Diodes Incorporated (BC847B-7-F, BC847C-13-F) and onsemi (BCW72LT1G) provide enhanced transition frequency (300 MHz) and power dissipation (300–310 mW) compared to the original specification, offering additional design margin without functional impact.

Frequently Asked Questions (FAQ)

Q: Can BCW72T116 be directly replaced with BC847B-TP?

A: Yes. BC847B-TP meets all critical electrical parameters: 100 mA collector current, 45 V breakdown voltage, 200 minimum hFE at 2 mA and 5 V, and identical SOT-23-3 package. Both parts are NPN transistors with surface mount configuration and ROHS3 compliance. The substitute is from an active manufacturer with superior inventory availability.

Q: What is the difference between BC847 and BC850 series substitutes?

A: BC847 and BC850 series are functionally equivalent for the BCW72T116 application. Both meet identical electrical specifications (100 mA, 45 V, hFE 200). The series designation reflects internal design variants from the same manufacturers. Selection between series is application-independent for this part category.

Q: Are automotive-qualified variants necessary for non-automotive applications?

A: Automotive qualification (AEC-Q101) is not required for non-automotive applications. However, AEC-Q101 qualified parts (BCW72,215, BCW72,235, BC847B,215, BC850B,215) undergo additional reliability testing and are suitable for any application. Selection should be based on application requirements and cost considerations.

Q: Does transition frequency affect substitution compatibility?

A: Transition frequency is a secondary parameter that does not affect substitution compatibility for the BCW72T116. The original part does not specify transition frequency. Substitute parts with higher transition frequency (100 MHz to 300 MHz) provide additional performance headroom and are fully compatible. Lower transition frequency substitutes are not listed.

Q: What packaging formats are available for substitutes?

A: Substitute parts are available in Tape & Reel (TR) and Cut Tape (CT) formats. Both formats are compatible with automated assembly equipment. Selection between formats depends on production volume and assembly line configuration. All substitutes use identical SOT-23-3 (TO-236-3, SC-59) physical packages.

Q: Is moisture sensitivity level identical across all substitutes?

A: Yes. All substitute parts carry MSL 1 (Unlimited) rating, matching the BCW72T116. This classification indicates no moisture sensitivity restrictions and unlimited shelf life under standard storage conditions.

Q: Can substitutes be used in existing PCB designs without layout modification?

A: Yes. All substitute parts use the TO-236-3 / SOT-23-3 package with identical pin configuration and footprint. No PCB layout changes are required. Direct component substitution is possible without design revision.

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