BCX56H6327XTSA1 Equivalent & Substitute Parts

Part Overview

The BCX56H6327XTSA1 is an NPN bipolar junction transistor manufactured by Infineon Technologies, classified as a small-signal switching transistor in the SOT-89 package. This device is rated for 80 V collector-emitter breakdown voltage and 1 A maximum collector current, with a maximum power dissipation of 2 W and transition frequency of 100 MHz. The part carries automotive-grade qualification (AEC-Q101) and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1).

The BCX56H6327XTSA1 is designated as Last Time Buy status, indicating production discontinuation. Equivalent and substitute parts are necessary to maintain design continuity and ensure long-term component availability for new production and field service applications.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	80	V
Current - Collector (Ic) (Max)	1	A
Vce Saturation (Max) @ Ib, Ic	500 mV @ 50 mA, 500 mA	—
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) (Min) @ Ic, Vce	40 @ 150 mA, 2 V	—
Power - Max	2	W
Frequency - Transition	100	MHz
Operating Temperature (TJ)	150	°C
Package / Case	TO-243AA	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitution of the BCX56H6327XTSA1 is determined by strict electrical and mechanical parameter matching within the NPN bipolar transistor category. The following parameters establish substitution eligibility:

Critical Matching Parameters:

Transistor Type: NPN (mandatory)
Voltage - Collector Emitter Breakdown (Max): 80 V (mandatory)
Current - Collector (Ic) (Max): 1 A (mandatory)
Vce Saturation (Max) @ Ib, Ic: 500 mV @ 50 mA, 500 mA (mandatory)
Current - Collector Cutoff (Max): 100 nA (mandatory)
DC Current Gain (hFE) (Min) @ Ic, Vce: minimum 40 @ 150 mA, 2 V (mandatory)
Package / Case: TO-243AA (mandatory for mechanical compatibility)
Mounting Type: Surface Mount (mandatory)
RoHS Status: ROHS3 Compliant (mandatory for regulatory compliance)

Parameters Permitting Variation:

Power - Max: may equal or exceed 2 W
Frequency - Transition: may equal or exceed 100 MHz
Operating Temperature (TJ): may equal or exceed 150 °C
Packaging format (Tape & Reel, Cut Tape, Bulk) may vary
Product Status may differ (Active substitutes are preferred over Last Time Buy)

All identified substitute parts meet or exceed the critical electrical specifications and maintain TO-243AA package compatibility with surface mount assembly requirements.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) A	Vce Breakdown (Max) V	Vce Sat (Max) mV	hFE (Min) @ 150mA, 2V	Power (Max) W	Frequency (Transition) MHz	Package	Status
BCX56H6327XTSA1	Infineon Technologies	1	80	500	40	2	100	TO-243AA	Last Time Buy
BCX56TA	Diodes Incorporated	1	80	500	40	1	150	TO-243AA	Active
BCP56T1G	onsemi	1	80	500	40	1.5	130	TO-261-4	Active
BCX56,115	Nexperia USA Inc.	1	80	500	63	1.25	180	TO-243AA	Active
BCX56,135	NXP USA Inc.	1	80	500	63	1.25	180	TO-243AA	Active
BCX56-10,115	Nexperia USA Inc.	1	80	500	63	1.25	180	TO-243AA	Active
BCX56-10,135	Nexperia USA Inc.	1	80	500	63	1.25	180	TO-243AA	Active
BCX56-16,115	Nexperia USA Inc.	1	80	500	100	1.25	180	TO-243AA	Active
BCX56-16,135	Nexperia USA Inc.	1	80	500	100	1.25	180	TO-243AA	Active
BCX56-16,147	Nexperia USA Inc.	1	80	500	100	1.25	180	TO-243AA	Active
BCX5610TA	Diodes Incorporated	1	80	500	63	1	150	TO-243AA	Active

Engineering Selection Recommendations

Primary Substitutes (Identical Package, Active Status):

BCX56TA (Diodes Incorporated) and BCX5610TA (Diodes Incorporated) are direct electrical and mechanical equivalents with Active product status. Both maintain TO-243AA package compatibility and meet all critical electrical parameters. BCX56TA offers higher transition frequency (150 MHz vs. 100 MHz) and BCX5610TA provides higher DC current gain (63 vs. 40 @ 150 mA, 2 V), both representing performance enhancements over the original part.

Secondary Substitutes (Identical Package, Enhanced Performance):

BCX56,115, BCX56,135, BCX56-10,115, BCX56-10,135, BCX56-16,115, BCX56-16,135, and BCX56-16,147 (all Nexperia USA Inc.) maintain TO-243AA package compatibility with Active product status. These parts provide enhanced transition frequency (180 MHz) and increased DC current gain (63 to 100 @ 150 mA, 2 V). The BCX56-16 variants offer the highest DC current gain specification (100 @ 150 mA, 2 V).

Alternative Package Substitute (Different Package):

BCP56T1G (onsemi) is an Active product with equivalent electrical specifications but uses TO-261-4 package (SOT-223) instead of TO-243AA. This substitute is applicable only when PCB layout and assembly equipment support SOT-223 package format. Power rating is 1.5 W, exceeding the original 2 W specification.

All substitute parts carry RoHS3 compliance and unlimited moisture sensitivity level (MSL 1), maintaining regulatory and environmental compatibility with the original BCX56H6327XTSA1.

Frequently Asked Questions (FAQ)

Q: Can BCX56TA directly replace BCX56H6327XTSA1 in existing designs?

A: Yes. BCX56TA meets all critical electrical parameters (80 V breakdown, 1 A collector current, 500 mV saturation voltage, 40 minimum hFE @ 150 mA, 2 V) and maintains identical TO-243AA package and surface mount configuration. The part is manufactured by Diodes Incorporated with Active product status and RoHS3 compliance.

Q: What is the difference between BCX56,115 and BCX56-16,115?

A: Both parts are manufactured by Nexperia USA Inc. in TO-243AA package with identical electrical ratings (80 V, 1 A, 500 mV saturation). The primary difference is DC current gain specification: BCX56,115 specifies minimum 63 hFE @ 150 mA, 2 V, while BCX56-16,115 specifies minimum 100 hFE @ 150 mA, 2 V. The higher gain variant (BCX56-16,115) provides improved base drive efficiency.

Q: Is BCP56T1G compatible with BCX56H6327XTSA1 designs?

A: BCP56T1G is electrically equivalent but uses SOT-223 (TO-261) package instead of SOT-89 (TO-243AA). Substitution requires PCB redesign and assembly process compatibility with the larger SOT-223 package footprint. Electrical specifications are identical (80 V, 1 A, 500 mV saturation, 40 minimum hFE @ 150 mA, 2 V).

Q: Why do some substitute parts have lower power ratings than the original?

A: BCX56TA and BCX5610TA specify 1 W maximum power versus the original 2 W. These parts remain electrically compatible because the critical parameters (voltage, current, saturation voltage, gain) are identical. Power rating differences reflect thermal design variations between manufacturers. Application thermal requirements determine whether reduced power rating is acceptable.

Q: Are all substitute parts automotive-grade?

A: The original BCX56H6327XTSA1 carries automotive-grade qualification (AEC-Q101). Substitute parts listed do not explicitly state automotive qualification in provided specifications. Design applications requiring automotive-grade certification should confirm AEC-Q101 status with manufacturers before implementation.

Q: What is the significance of packaging format differences (Tape & Reel vs. Cut Tape vs. Bulk)?

A: Packaging format affects supply chain logistics and assembly process compatibility but does not alter electrical or mechanical performance. Tape & Reel (TR) format suits high-volume automated assembly. Cut Tape (CT) and Bulk formats accommodate lower-volume or manual assembly operations. All formats deliver identical component specifications.

Q: Can BCX56-16,147 be used as a drop-in replacement?

A: Yes. BCX56-16,147 is electrically and mechanically compatible with BCX56H6327XTSA1. It maintains TO-243AA package, 80 V breakdown, 1 A collector current, and 500 mV saturation voltage. The higher DC current gain (100 @ 150 mA, 2 V) and transition frequency (180 MHz) represent performance enhancements. The part is manufactured by Nexperia USA Inc. with Active status and RoHS3 compliance.

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