Equivalent & Substitute Parts for DCX54-13

Part Overview

The DCX54-13 is a Bipolar (BJT) Transistor NPN rated for 45 V collector-emitter breakdown voltage and 1 A maximum collector current in a Surface Mount SOT-89-3 package. Manufactured by Diodes Incorporated, this component is classified as Obsolete. Due to its obsolete product status, equivalent and substitute parts from active manufacturers are necessary to maintain design continuity and ensure ongoing component availability for production and repair applications.

Key Parameters

Parameter	Value
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	45 V
Current - Collector (Ic) (Max)	1 A
Power - Max	1 W
Frequency - Transition	200 MHz
DC Current Gain (hFE) (Min) @ Ic, Vce	63 @ 150mA, 2V
Vce Saturation (Max) @ Ib, Ic	500mV @ 50mA, 500mA
Current - Collector Cutoff (Max)	100nA (ICBO)
Operating Temperature	-55°C ~ 150°C (TJ)
Package / Case	TO-243AA
Supplier Device Package	SOT-89-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the DCX54-13 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: NPN
Voltage - Collector Emitter Breakdown (Max): 45 V minimum
Current - Collector (Ic) (Max): 1 A minimum
Package / Case: TO-243AA (SOT-89-3 compatible)
Mounting Type: Surface Mount
Vce Saturation (Max) @ Ib, Ic: 500mV @ 50mA, 500mA

Secondary Compatibility Parameters:

DC Current Gain (hFE) (Min) @ Ic, Vce: 63 or higher
Current - Collector Cutoff (Max): 100nA or lower
Operating Temperature Range: Must encompass application requirements
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts are grouped into two categories:

Category 1: Direct Electrical Equivalents (45 V Rating) Parts meeting or exceeding the 45 V collector-emitter breakdown voltage specification with 1 A collector current capacity and compatible SOT-89-3 packaging. These include BCX5410TA, BCX54TA, BCX54,115, BCX54-10,115, BCX54-16,115, and BCX54-16,135.

Category 2: Higher Voltage Rated Alternatives (80 V Rating) Parts exceeding the voltage specification while maintaining electrical and mechanical compatibility. BCX5616TA provides 80 V collector-emitter breakdown voltage with enhanced design margin.

Category 3: Reduced Current Alternatives (600 mA Rating) Parts with lower maximum collector current specifications. PXT2222A,115 and PXT4401,115 are rated for 600 mA maximum collector current and 40 V collector-emitter breakdown voltage, suitable for applications with reduced current requirements.

Parameter Comparison

Part Number	Manufacturer	Product Status	Ic (Max)	Vce Breakdown (Max)	Power (Max)	Frequency - Transition	hFE (Min) @ 150mA, 2V	Operating Temp	Package
DCX54-13	Diodes Incorporated	Obsolete	1 A	45 V	1 W	200 MHz	63	-55°C ~ 150°C	SOT-89-3
BCX5410TA	Diodes Incorporated	Active	1 A	45 V	1 W	150 MHz	63	-65°C ~ 150°C	SOT-89-3
BCX5616TA	Diodes Incorporated	Active	1 A	80 V	1 W	150 MHz	100	-65°C ~ 150°C	SOT-89-3
BCX54TA	Diodes Incorporated	Active	1 A	45 V	1 W	150 MHz	40	-65°C ~ 150°C	SOT-89-3
BCX54,115	NXP Semiconductors	Active	1 A	45 V	1.25 W	180 MHz	63	-55°C ~ 150°C	SOT-89
BCX54-10,115	Nexperia USA Inc.	Active	1 A	45 V	1.25 W	180 MHz	63	-55°C ~ 150°C	SOT-89
BCX54-16,115	Nexperia USA Inc.	Active	1 A	45 V	1.25 W	180 MHz	100	-55°C ~ 150°C	SOT-89
BCX54-16,135	Nexperia USA Inc.	Active	1 A	45 V	1.25 W	180 MHz	100	-55°C ~ 150°C	SOT-89
PXT2222A,115	Nexperia USA Inc.	Active	600 mA	40 V	1.1 W	300 MHz	100	-55°C ~ 150°C	SOT-89
PXT4401,115	NXP USA Inc.	Active	600 mA	40 V	1.1 W	250 MHz	100	-55°C ~ 150°C	SOT-89

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

BCX5410TA and BCX54TA from Diodes Incorporated are direct electrical equivalents to the DCX54-13. Both are Active products with identical collector current (1 A) and collector-emitter breakdown voltage (45 V) specifications. BCX5410TA maintains the same DC current gain (hFE = 63) and offers extended lower operating temperature range (-65°C vs. -55°C). BCX54TA provides a lower hFE minimum (40 vs. 63), which may require circuit verification in gain-sensitive applications.

BCX54,115, BCX54-10,115, BCX54-16,115, and BCX54-16,135 from NXP Semiconductors and Nexperia USA Inc. are Active products with identical electrical ratings (1 A, 45 V). These parts offer enhanced power dissipation (1.25 W vs. 1 W) and improved frequency response (180 MHz vs. 200 MHz). BCX54-16,115 and BCX54-16,135 feature higher DC current gain (hFE = 100), providing improved gain margin. All are ROHS3 Compliant with MSL 1 (Unlimited).

Higher Voltage Alternative:

BCX5616TA is an Active product from Diodes Incorporated rated for 80 V collector-emitter breakdown voltage with 1 A collector current. This part provides enhanced voltage margin for applications subject to transient overvoltage conditions. DC current gain is higher (hFE = 100). Electrical compatibility is maintained across all other critical parameters.

Reduced Current Alternatives:

PXT2222A,115 and PXT4401,115 are Active products rated for 600 mA maximum collector current and 40 V collector-emitter breakdown voltage. These parts are suitable for applications with reduced current requirements. Both are AEC-Q100 or AEC-Q101 qualified automotive-grade components. PXT2222A,115 offers superior frequency response (300 MHz). Both maintain ROHS3 compliance and MSL 1 (Unlimited).

Compliance and Availability:

All substitute parts are ROHS3 Compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original DCX54-13 specification. All substitute parts are currently Active in production status, ensuring long-term availability and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can BCX5410TA directly replace DCX54-13 in all applications?

A: BCX5410TA is electrically equivalent to DCX54-13 with identical collector current (1 A), collector-emitter breakdown voltage (45 V), and DC current gain (hFE = 63). Both are NPN transistors in SOT-89-3 packaging. The primary difference is BCX5410TA is Active (vs. Obsolete) and offers extended lower operating temperature range (-65°C vs. -55°C). Direct substitution is supported for applications within the specified operating temperature range.

Q: What is the difference between BCX54-16,115 and BCX54-10,115?

A: Both parts are from Nexperia USA Inc. and are electrically identical except for DC current gain specification. BCX54-16,115 has hFE minimum of 100 at 150mA, 2V, while BCX54-10,115 has hFE minimum of 63 at 150mA, 2V. Both are rated for 1 A collector current and 45 V collector-emitter breakdown voltage. Selection depends on circuit gain requirements.

Q: Is BCX5616TA a suitable substitute if my application requires higher voltage margin?

A: BCX5616TA is rated for 80 V collector-emitter breakdown voltage compared to the DCX54-13 specification of 45 V. This provides additional voltage margin for transient overvoltage protection. All other electrical parameters (1 A collector current, 500mV saturation voltage, 100nA cutoff current) remain compatible. BCX5616TA is suitable for applications requiring enhanced voltage rating within the same current and power envelope.

Q: Can PXT2222A,115 replace DCX54-13 in high-current applications?

A: PXT2222A,115 is rated for 600 mA maximum collector current, which is lower than the DCX54-13 specification of 1 A. This part is suitable only for applications with collector current requirements not exceeding 600 mA. The collector-emitter breakdown voltage is 40 V (vs. 45 V), which is lower than the original specification. PXT2222A,115 is not suitable for applications requiring the full 1 A collector current capability.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed are ROHS3 Compliant, matching the original DCX54-13 specification. All parts carry MSL 1 (Unlimited) moisture sensitivity rating.

Q: What is the package compatibility between SOT-89-3 and SOT-89?

A: Both SOT-89-3 and SOT-89 are Surface Mount packages in the TO-243AA case style. The primary difference is SOT-89-3 is a 3-pin configuration while SOT-89 may reference the same 3-pin package. Physical footprint and pin assignment are compatible for PCB layout purposes. Verify specific package drawings with manufacturer datasheets for exact dimensional specifications.

Q: Which substitute offers the best frequency response?

A: PXT2222A,115 offers the highest transition frequency at 300 MHz, compared to DCX54-13 at 200 MHz. However, PXT2222A,115 is rated for 600 mA maximum collector current. Among 1 A rated substitutes, BCX54,115, BCX54-10,115, BCX54-16,115, and BCX54-16,135 offer 180 MHz transition frequency. BCX5410TA and BCX5616TA offer 150 MHz transition frequency.

Q: Is BCX54TA suitable for applications requiring minimum hFE of 63?

A: BCX54TA has hFE minimum of 40 at 150mA, 2V, which is lower than the DCX54-13 specification of 63. This part is not suitable for applications with strict minimum gain requirements of 63 or higher. BCX5410TA, BCX54,115, and BCX54-10,115 maintain the hFE minimum of 63 specification.

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