DCX54-16-13 Equivalent & Substitute Parts

Part Overview

The DCX54-16-13 is an NPN bipolar junction transistor manufactured by Diodes Incorporated, rated for 45 V collector-emitter breakdown voltage and 1 A maximum collector current in a surface mount SOT-89-3 package. This device is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and production continuity. Substitute parts are selected based on electrical parameter compatibility and mechanical package equivalence to ensure functional interchangeability in existing circuit applications.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	45	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	100 @ 150 mA, 2 V	—
Power - Max	1	W
Frequency - Transition	200	MHz
Operating Temperature	-55 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-243AA	—
Supplier Device Package	SOT-89-3	—

Substitute Part Grouping Explanation

Substitute parts for the DCX54-16-13 are categorized based on electrical parameter compatibility and package equivalence. The primary substitution criteria are:

Critical Parameters for Substitution:

Transistor Type: NPN
Voltage - Collector Emitter Breakdown (Max): 45 V or greater
Current - Collector (Ic) (Max): 1 A or greater
Vce Saturation: 500 mV or less @ specified conditions
Package / Case: TO-243AA or equivalent surface mount footprint
Mounting Type: Surface Mount

Substitution Categories:

Group 1: Direct Electrical Equivalents (45 V, 1 A Rating) Parts BCX5416TA, BCX54-16,115, BCX54,115, BCX54-10,115, and BCX54-16,135 maintain the 45 V breakdown voltage and 1 A collector current specifications. These parts are functionally equivalent to the DCX54-16-13 and differ primarily in transition frequency (150–180 MHz), power dissipation (1–1.25 W), and manufacturer/packaging variants. All are active products with current production status.

Group 2: Enhanced Voltage Rating (80 V Rating) Part BCX5616TA provides an 80 V collector-emitter breakdown voltage while maintaining 1 A collector current. This part is suitable for applications requiring higher voltage margin and is electrically compatible with circuits designed for the DCX54-16-13.

Group 3: Higher Current Rating (3 A Rating) Part NSS40301MZ4T1G is rated for 3 A collector current at 40 V breakdown voltage in a SOT-223 package. This part provides increased current capacity and is suitable for applications requiring higher current handling, though package footprint differs from the original SOT-89-3.

Group 4: Lower Current Rating (600 mA Rating) Parts PXT2222A,115 and PXT4401,115 are rated for 600 mA collector current at 40 V breakdown voltage. These parts are suitable for applications with reduced current requirements and are available in SOT-89 packages compatible with the original footprint.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vce(BR) Max (V)	Ic Max (A)	Vce Sat (mV)	hFE Min @ Ic, Vce	Power Max (W)	Freq Trans (MHz)	Temp Range (°C)	Package
DCX54-16-13	Diodes Inc.	Obsolete	45	1	500 @ 50mA, 500mA	100 @ 150mA, 2V	1	200	-55 to 150	SOT-89-3
BCX5416TA	Diodes Inc.	Active	45	1	500 @ 50mA, 500mA	100 @ 150mA, 2V	1	150	-65 to 150	SOT-89-3
BCX5616TA	Diodes Inc.	Active	80	1	500 @ 50mA, 500mA	100 @ 150mA, 2V	1	150	-65 to 150	SOT-89-3
BCX54-16,115	Nexperia USA	Active	45	1	500 @ 50mA, 500mA	100 @ 150mA, 2V	1.25	180	-55 to 150	SOT-89
BCX54,115	NXP Semi.	Active	45	1	500 @ 50mA, 500mA	63 @ 150mA, 2V	1.25	180	-55 to 150	SOT-89
BCX54-10,115	Nexperia USA	Active	45	1	500 @ 50mA, 500mA	63 @ 150mA, 2V	1.25	180	-55 to 150	SOT-89
BCX54-16,135	Nexperia USA	Active	45	1	500 @ 50mA, 500mA	100 @ 150mA, 2V	1.25	180	-55 to 150	SOT-89
NSS40301MZ4T1G	onsemi	Active	40	3	200 @ 300mA, 3A	200 @ 1A, 1V	2	215	-55 to 150	SOT-223
PXT2222A,115	Nexperia USA	Active	40	0.6	1000 @ 50mA, 500mA	100 @ 150mA, 10V	1.1	300	-55 to 150	SOT-89
PXT4401,115	NXP USA	Active	40	0.6	750 @ 50mA, 500mA	100 @ 150mA, 1V	1.1	250	-55 to 150	SOT-89

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

BCX5416TA and BCX54-16,135 are the preferred direct substitutes for the DCX54-16-13. Both maintain the 45 V breakdown voltage, 1 A collector current, and SOT-89-3/SOT-89 package compatibility. BCX5416TA is manufactured by Diodes Incorporated with extended lower operating temperature limit (-65°C). BCX54-16,135 is manufactured by Nexperia USA Inc. with matching DC current gain specification (hFE Min = 100 @ 150 mA, 2 V) and increased power rating (1.25 W). Both parts are active products with established production status and ROHS3 compliance.

Secondary Substitutes (Enhanced Specifications):

BCX5616TA provides an 80 V collector-emitter breakdown voltage rating, offering increased voltage margin for applications operating near the 45 V specification limit. This part maintains 1 A collector current and SOT-89-3 package compatibility. Selection of BCX5616TA is appropriate for circuits requiring enhanced overvoltage protection.

Alternative Substitutes (Modified Electrical Characteristics):

NSS40301MZ4T1G is suitable for applications requiring higher collector current (3 A) with reduced voltage rating (40 V). This part operates in SOT-223 package, requiring PCB layout modification. Selection is appropriate only when increased current capacity is required and package footprint change is acceptable.

PXT2222A,115 and PXT4401,115 are suitable for applications with reduced collector current requirements (600 mA maximum). Both parts operate at 40 V breakdown voltage and are available in SOT-89 packages. PXT4401,115 includes automotive qualification (AEC-Q101). Selection is appropriate only when collector current does not exceed 600 mA.

Compliance and Certification:

All substitute parts maintain ROHS3 compliance and REACH unaffected status consistent with the original DCX54-16-13. Moisture sensitivity level (MSL) is rated as 1 (Unlimited) for all parts. ECCN classification is EAR99 for all parts with specified ECCN data.

Frequently Asked Questions (FAQ)

Q: Can BCX5416TA directly replace DCX54-16-13 in existing designs?

A: Yes. BCX5416TA maintains identical electrical specifications for voltage (45 V), current (1 A), saturation voltage (500 mV), and DC current gain (100 @ 150 mA, 2 V). Package footprint is SOT-89-3, matching the original. The primary difference is transition frequency (150 MHz vs. 200 MHz) and extended lower operating temperature (-65°C vs. -55°C). These differences do not affect functional compatibility in standard applications.

Q: What is the difference between BCX54-16,115 and BCX54-16,135?

A: Both parts are manufactured by Nexperia USA Inc. and maintain 45 V, 1 A specifications in SOT-89 packages. BCX54-16,115 is supplied in Cut Tape (CT) & Digi-Reel packaging, while BCX54-16,135 is supplied in Tape & Reel (TR) packaging. Electrical specifications are identical except BCX54-16,135 specifies hFE Min = 100 @ 150 mA, 2 V, matching the original DCX54-16-13 specification. BCX54-16,115 specifies hFE Min = 63 @ 150 mA, 2 V. Selection depends on packaging requirements and DC current gain specification.

Q: Is BCX5616TA a suitable substitute if my circuit operates at voltages below 45 V?

A: Yes. BCX5616TA is rated for 80 V collector-emitter breakdown voltage, which exceeds the 45 V requirement. The higher voltage rating does not degrade performance in circuits operating below 45 V. This part is suitable for applications where voltage margin is desired or where circuit conditions may occasionally exceed 45 V.

Q: Can NSS40301MZ4T1G replace DCX54-16-13 without PCB modification?

A: No. NSS40301MZ4T1G is packaged in SOT-223 (TO-261), which has a different footprint than the SOT-89-3 package of the DCX54-16-13. PCB layout modification is required. Additionally, NSS40301MZ4T1G is rated for 40 V breakdown voltage (lower than 45 V) and 3 A collector current (higher than 1 A). This part is suitable only for applications where increased current capacity is required and package footprint change is acceptable.

Q: What is the significance of the transition frequency difference between DCX54-16-13 (200 MHz) and BCX5416TA (150 MHz)?

A: Transition frequency (fT) indicates the frequency at which current gain drops to unity. The DCX54-16-13 specifies 200 MHz, while BCX5416TA specifies 150 MHz. For applications operating at frequencies significantly below 150 MHz, this difference has no practical impact. For high-frequency applications approaching or exceeding 150 MHz, the lower transition frequency of BCX5416TA may affect performance. Application-specific frequency requirements determine whether this difference is acceptable.

Q: Are PXT2222A,115 and PXT4401,115 suitable for applications designed for 1 A collector current?

A: No. Both PXT2222A,115 and PXT4401,115 are rated for maximum 600 mA collector current, which is below the 1 A specification of the DCX54-16-13. These parts are suitable only for applications where collector current does not exceed 600 mA. Use of these parts in circuits requiring 1 A operation will result in device stress and potential failure.

Q: What packaging options are available for direct substitutes?

A: BCX5416TA is available in Cut Tape (CT) & Digi-Reel packaging. BCX54-16,115 is available in Cut Tape (CT) & Digi-Reel packaging. BCX54,115 is available in Bulk packaging. BCX54-10,115 and BCX54-16,135 are available in Tape & Reel (TR) packaging. Selection depends on production volume and assembly process requirements.

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All substitute parts listed maintain ROHS3 compliance status. Moisture sensitivity level (MSL) is rated as 1 (Unlimited) for all parts, indicating no moisture sensitivity restrictions during storage and handling.

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