BCX70G,215 Equivalent & Substitute Parts

Part Overview

The BCX70G,215 is an NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for general-purpose switching and amplification applications. This surface mount device operates at a maximum collector voltage of 45 V with a collector current rating of 100 mA and a maximum power dissipation of 250 mW. The part is actively produced, RoHS3 compliant, and carries AEC-Q101 automotive qualification. Equivalent and substitute parts are identified based on matching or exceeding the electrical and mechanical specifications of the BCX70G,215 within the same package family (TO-236-3/SOT-23-3).

Key Parameters

Parameter	BCX70G,215 Specification
Transistor Type	NPN
Collector Current (Ic) Max	100 mA
Collector-Emitter Breakdown Voltage (Max)	45 V
Power Dissipation (Max)	250 mW
Transition Frequency	250 MHz
DC Current Gain (hFE) Min @ Ic, Vce	120 @ 2 mA, 5 V
Vce Saturation (Max) @ Ib, Ic	550 mV @ 1.25 mA, 50 mA
Package / Case	TO-236-3, SC-59, SOT-23-3
Mounting Type	Surface Mount
Operating Temperature (Max)	150°C (TJ)
RoHS Status	ROHS3 Compliant
Grade	Automotive
Qualification	AEC-Q101

Substitute Part Grouping Explanation

Substitute parts for the BCX70G,215 are selected based on the following criteria:

Primary Matching Parameters:

Transistor Type: NPN
Package / Case: TO-236-3, SC-59, SOT-23-3 (surface mount)
Collector-Emitter Breakdown Voltage: 45 V (minimum requirement)
Mounting Type: Surface Mount

Secondary Compatibility Parameters:

Collector Current (Ic) Max: Equal to or greater than 100 mA
Power Dissipation: Equal to or greater than 250 mW
Operating Temperature Range: Must support maximum junction temperature of 150°C
RoHS and REACH Compliance: ROHS3 compliant, REACH unaffected

Acceptable Variations:

Transition Frequency: Substitutes may operate at lower frequencies (100 MHz acceptable for non-RF applications)
DC Current Gain (hFE): Substitutes with different hFE values are acceptable if measured at comparable operating points
Vce Saturation: Substitutes with higher saturation voltages are acceptable within the 45 V rating
Collector Cutoff Current (ICBO): Substitutes with higher leakage currents are acceptable

All identified substitutes maintain the same package footprint and pinout compatibility with the BCX70G,215.

Parameter Comparison

Part Number	Manufacturer	Ic Max (mA)	Vce Breakdown (V)	Power Max (mW)	Frequency (MHz)	hFE Min @ Ic, Vce	Package	Automotive Grade	AEC-Q101
BCX70G,215	Nexperia USA Inc.	100	45	250	250	120 @ 2 mA, 5 V	TO-236-3	Yes	Yes
BC847ALT1G	onsemi	100	45	300	100	110 @ 2 mA, 5 V	SOT-23-3	No	No
BC817-16-7-F	Diodes Incorporated	500	45	310	100	100 @ 100 mA, 1 V	SOT-23-3	Yes	Yes
BC817-16-TP	Micro Commercial Co	800	45	310	100	100 @ 100 mA, 1 V	SOT-23-3	No	No
BC817-16LT1G	onsemi	500	45	300	100	100 @ 100 mA, 1 V	SOT-23-3	No	No
BC817-16LT3G	onsemi	500	45	300	100	100 @ 100 mA, 1 V	SOT-23-3	No	No
BC817-25-7-F	Diodes Incorporated	500	45	310	100	160 @ 100 mA, 1 V	SOT-23-3	Yes	Yes
BC817-25-TP	Micro Commercial Co	800	45	310	100	160 @ 100 mA, 1 V	SOT-23-3	No	No
BC817-25LT1G	onsemi	500	45	300	100	160 @ 100 mA, 1 V	SOT-23-3	No	No
BC817-25LT3G	onsemi	500	45	300	100	160 @ 100 mA, 1 V	SOT-23-3	No	No
BC817-25Q-7-F	Diodes Incorporated	500	45	350	100	160 @ 100 mA, 1 V	SOT-23-3	Yes	Yes

Engineering Selection Recommendations

For Automotive Applications (AEC-Q101 Required):

The following substitutes maintain automotive-grade qualification and AEC-Q101 certification:

BC817-16-7-F (Diodes Incorporated)
BC817-25-7-F (Diodes Incorporated)
BC817-25Q-7-F (Diodes Incorporated)

These parts are suitable for direct replacement in automotive circuits where qualification standards are mandatory.

For General-Purpose Applications (Non-Automotive):

All listed substitutes are compatible with the BCX70G,215 for non-automotive applications. Selection should be based on specific current and power requirements:

BC847ALT1G: Matched collector current (100 mA), suitable for low-current switching
BC817 series: Higher collector current ratings (500–800 mA), suitable for higher-current applications

Packaging and Inventory Considerations:

All substitutes use the SOT-23-3 package, which is mechanically and electrically compatible with the TO-236-3 package of the BCX70G,215. Packaging variants (Cut Tape, Digi-Reel, Tape & Reel) do not affect electrical performance and are selected based on procurement requirements.

Compliance Status:

All substitutes are RoHS3 compliant and REACH unaffected, matching the environmental compliance profile of the BCX70G,215.

Frequently Asked Questions (FAQ)

Q: Can BC847ALT1G replace BCX70G,215 in all applications?

A: BC847ALT1G is electrically compatible with BCX70G,215 for applications requiring up to 100 mA collector current. However, it does not carry AEC-Q101 automotive qualification. Use BC847ALT1G only in non-automotive applications or where automotive qualification is not required.

Q: What is the difference between BC817-16 and BC817-25 variants?

A: The primary difference is the DC current gain (hFE) specification. BC817-16 variants have a minimum hFE of 100 @ 100 mA, 1 V, while BC817-25 variants have a minimum hFE of 160 @ 100 mA, 1 V. Both are electrically compatible with BCX70G,215 for switching applications.

Q: Are BC817 series parts suitable for high-frequency applications?

A: BC817 series parts operate at 100 MHz transition frequency, compared to 250 MHz for BCX70G,215. For applications requiring frequencies above 100 MHz, BCX70G,215 is the appropriate choice. For applications below 100 MHz, BC817 series parts are suitable.

Q: Does packaging type (Cut Tape vs. Tape & Reel) affect electrical performance?

A: No. Packaging type affects only procurement and handling logistics. Electrical performance is identical across all packaging variants of the same part number.

Q: Can I use BC817-16-TP or BC817-25-TP in automotive applications?

A: BC817-16-TP and BC817-25-TP do not carry AEC-Q101 automotive qualification. They are not suitable for automotive applications where qualification is mandatory. Use BC817-16-7-F, BC817-25-7-F, or BC817-25Q-7-F for automotive applications.

Q: What is the maximum collector current I can safely use with these substitutes?

A: The BCX70G,215 is rated for 100 mA maximum collector current. Substitutes with higher ratings (BC817 series at 500–800 mA) can be used in applications requiring up to their rated current, but the circuit design must account for the different current handling characteristics.

Q: Are all substitutes compatible with the same PCB footprint?

A: Yes. All substitutes use the SOT-23-3 package, which shares the same pinout and footprint as the TO-236-3 package of BCX70G,215. No PCB modifications are required for substitution.

Q: What is the operating temperature range for these substitutes?

A: BCX70G,215 operates to a maximum junction temperature of 150°C. All listed substitutes support this maximum temperature or higher, ensuring thermal compatibility.

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