BF820-QR Equivalent & Substitute Parts

Part Overview

The BF820-QR is an NPN 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 50 mA, supports a collector-emitter breakdown voltage of 300 V, and delivers a maximum power dissipation of 250 mW. The device is qualified to AEC-Q101 automotive standards and maintains active product status. Alternative part numbers within the BF820 series are available to support supply chain flexibility and inventory optimization while maintaining identical electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	50	mA
Voltage - Collector Emitter Breakdown (Max)	300	V
Vce Saturation (Max)	600 mV @ 5 mA, 30 mA	mV
Current - Collector Cutoff (Max)	10	nA
DC Current Gain (hFE) Min	50 @ 25 mA, 20 V	—
Power - Max	250	mW
Frequency - Transition	60	MHz
Operating Temperature (TJ)	150	°C
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
AEC-Q101 Qualification	Yes	—

Substitute Part Grouping Explanation

Substitution eligibility for the BF820-QR is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute parts BF820,215 and BF820,235 are classified as parametric equivalents because they maintain identical specifications across the following key criteria:

Transistor type: NPN configuration
Maximum collector current: 50 mA
Collector-emitter breakdown voltage: 300 V
Saturation voltage characteristics: 600 mV @ 5 mA, 30 mA
Collector cutoff current: 10 nA
DC current gain: 50 minimum @ 25 mA, 20 V
Maximum power dissipation: 250 mW
Transition frequency: 60 MHz
Operating temperature range: 150°C maximum junction temperature
Package configuration: TO-236AB surface mount
Compliance status: ROHS3 compliant, REACH unaffected

All three part numbers share the same base product designation (BF820) and are manufactured by Nexperia USA Inc. with active product status. The differences between part numbers reflect internal manufacturing or packaging variations that do not affect electrical performance or mechanical compatibility.

Parameter Comparison

Parameter	BF820-QR	BF820,215	BF820,235
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.
Category	Transistors, Bipolar (BJT)	Transistors, Bipolar (BJT)	Transistors, Bipolar (BJT)
Transistor Type	NPN	NPN	NPN
Current - Collector (Ic) Max	50 mA	50 mA	50 mA
Voltage - Collector Emitter Breakdown (Max)	300 V	300 V	300 V
Vce Saturation (Max)	600 mV @ 5 mA, 30 mA	600 mV @ 5 mA, 30 mA	600 mV @ 5 mA, 30 mA
Current - Collector Cutoff (Max)	10 nA	10 nA	10 nA
DC Current Gain (hFE) Min	50 @ 25 mA, 20 V	50 @ 25 mA, 20 V	50 @ 25 mA, 20 V
Power - Max	250 mW	250 mW	250 mW
Frequency - Transition	60 MHz	60 MHz	60 MHz
Operating Temperature (TJ)	150°C	150°C	150°C
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Supplier Device Package	TO-236AB	TO-236AB	TO-236AB
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

All three part numbers—BF820-QR, BF820,215, and BF820,235—are direct parametric equivalents suitable for interchangeable use in circuit designs requiring NPN bipolar junction transistors with the specified electrical and mechanical characteristics. Selection between these alternatives should be based on:

Compliance and Certification: All parts maintain ROHS3 compliance and REACH unaffected status, satisfying environmental and regulatory requirements. The BF820-QR carries AEC-Q101 automotive qualification, confirming suitability for automotive-grade applications.

Product Availability: BF820,235 maintains the highest inventory level (30,577 pieces), followed by BF820,215 (8,349 pieces) and BF820-QR (888 pieces). Inventory status should inform procurement decisions for high-volume production or extended lead-time mitigation.

Packaging and Delivery: All parts are supplied in Tape & Reel (TR) packaging format, supporting automated assembly processes. The TO-236AB package designation ensures mechanical compatibility across all three alternatives.

Manufacturing Continuity: All parts are manufactured by Nexperia USA Inc. with active product status, confirming ongoing availability and manufacturing support.

Frequently Asked Questions (FAQ)

Q: Can BF820,215 and BF820,235 be used as direct replacements for BF820-QR in automotive applications?

A: BF820,215 and BF820,235 are parametric equivalents with identical electrical specifications. However, only BF820-QR carries explicit AEC-Q101 automotive qualification. For automotive-grade applications requiring documented qualification, BF820-QR is the specified part number. For non-automotive applications or where automotive qualification is not contractually required, BF820,215 and BF820,235 are electrically interchangeable.

Q: What are the differences between BF820-QR, BF820,215, and BF820,235?

A: All three part numbers share identical electrical and mechanical parameters. The differences are internal to Nexperia's manufacturing and part numbering system and do not affect circuit performance, package compatibility, or thermal characteristics.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts use the TO-236AB package configuration, which corresponds to the TO-236-3, SC-59, and SOT-23-3 designations. PCB footprints designed for any of these package references are compatible with all three part numbers.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: BF820,215 and BF820,235 are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling. BF820-QR does not specify an MSL rating in the provided data.

Q: Can these parts be used interchangeably in high-frequency applications?

A: Yes. All three parts maintain a transition frequency of 60 MHz, supporting identical high-frequency performance characteristics. Circuit designs utilizing any of these part numbers will exhibit equivalent frequency response.

Q: Are there any thermal performance differences between these parts?

A: No. All three parts are rated for a maximum junction temperature of 150°C and dissipate a maximum of 250 mW. Thermal management requirements and heat sink calculations are identical across all three alternatives.

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