DCX56-13 Equivalent & Substitute Parts

Part Overview

The DCX56-13 is a Surface Mount NPN Bipolar Junction Transistor manufactured by Diodes Incorporated, rated for 80 V collector-emitter breakdown voltage and 1 A maximum collector current in a SOT-89-3 package. This device is classified as Obsolete, necessitating identification of active equivalent and substitute parts for ongoing production and design requirements. Active alternatives maintain electrical and mechanical compatibility while offering current manufacturing availability and extended product lifecycle support.

Key Parameters

Parameter	DCX56-13 Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	1	A
Voltage - Collector Emitter Breakdown (Max)	80	V
Vce Saturation (Max) @ Ib, Ic	500mV @ 50mA, 500mA	—
Current - Collector Cutoff (Max)	100nA	ICBO
DC Current Gain (hFE) Min @ Ic, Vce	63 @ 150mA, 2V	—
Power - Max	1	W
Frequency - Transition	200	MHz
Operating Temperature	-55 to 150	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	TO-243AA	—
Supplier Device Package	SOT-89-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the DCX56-13 is determined by strict equivalence across the following critical parameters:

Mandatory Electrical Parameters:

Transistor Type: NPN
Maximum Collector Current (Ic): 1 A
Collector-Emitter Breakdown Voltage: 80 V
Vce Saturation: 500mV @ 50mA, 500mA
Collector Cutoff Current (ICBO): 100nA
Power Dissipation: 1 W minimum

Mandatory Mechanical Parameters:

Mounting Type: Surface Mount
Package / Case: TO-243AA
Supplier Device Package: SOT-89 or SOT-89-3

Acceptable Variations:

DC Current Gain (hFE) may vary within the specified range (40 to 100 @ 150mA, 2V)
Transition Frequency may be 130 MHz or higher
Operating Temperature range may be extended
Power rating may exceed 1 W
Product Status may transition from Obsolete to Active

Substitute parts are grouped into two categories: Diodes Incorporated Direct Substitutes (same manufacturer, active status) and Cross-Manufacturer Alternatives (equivalent electrical specifications, different manufacturers).

Parameter Comparison

Part Number	Manufacturer	Product Status	Ic (Max) A	Vce(br) V	hFE Min @ 150mA, 2V	Fт MHz	Power W	Temp Range °C	Package
DCX56-13	Diodes Incorporated	Obsolete	1	80	63	200	1	-55 to 150	SOT-89-3
BCX5610TA	Diodes Incorporated	Active	1	80	63	150	1	-65 to 150	SOT-89-3
BCX5616TA	Diodes Incorporated	Active	1	80	100	150	1	-65 to 150	SOT-89-3
BCX56TA	Diodes Incorporated	Active	1	80	40	150	1	-65 to 150	SOT-89-3
BCX56,115	Nexperia USA Inc.	Active	1	80	63	180	1.25	-55 to 150	SOT-89
BCX56-10,115	Nexperia USA Inc.	Active	1	80	63	180	1.25	-55 to 150	SOT-89
BCP56T1G	onsemi	Active	1	80	40	130	1.5	-65 to 150	SOT-223
BCX56,135	NXP USA Inc.	Active	1	80	63	180	1.25	-55 to 150	SOT-89
BCX56-10,135	Nexperia USA Inc.	Active	1	80	63	180	1.25	-55 to 150	SOT-89
BCX56-16,115	Nexperia USA Inc.	Active	1	80	100	180	1.25	-55 to 150	SOT-89
BCX56-16,135	Nexperia USA Inc.	Active	1	80	100	180	1.25	-55 to 150	SOT-89

Engineering Selection Recommendations

Primary Recommendation: Diodes Incorporated BCX5610TA

The BCX5610TA is the direct active equivalent from the original manufacturer. It maintains identical electrical specifications (1 A, 80 V, 63 hFE minimum) and package format (SOT-89-3). Extended operating temperature range (-65°C to 150°C) provides additional thermal margin. Active product status ensures long-term availability and manufacturing support. ROHS3 compliance and MSL-1 rating match the original part.

Secondary Recommendation: Nexperia BCX56,115 or BCX56-10,115

These parts provide equivalent electrical performance with enhanced power rating (1.25 W vs. 1 W) and higher transition frequency (180 MHz vs. 200 MHz original, 150 MHz for BCX5610TA). SOT-89 package is mechanically compatible with SOT-89-3 footprints. Active status and full compliance certifications support production deployment.

Alternative for Extended Gain Applications: BCX5616TA or BCX56-16,115

These variants specify minimum hFE of 100 at 150mA, 2V, compared to 63 for the original part. Selection is appropriate for circuits requiring higher current gain. Electrical and thermal specifications remain equivalent.

Package Consideration: onsemi BCP56T1G

The BCP56T1G uses SOT-223 (TO-261) package instead of SOT-89-3. This part is selected only when PCB layout requires larger package footprint or when SOT-223 is the established standard for the application. Electrical specifications are equivalent; power rating is enhanced to 1.5 W.

Compliance Status:

All recommended substitutes are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export control. Moisture sensitivity level remains MSL-1 (unlimited shelf life).

Frequently Asked Questions (FAQ)

Q: Can BCX56TA directly replace DCX56-13 in existing designs?

A: Yes. BCX56TA is electrically equivalent with identical voltage, current, and saturation specifications. The lower hFE minimum (40 vs. 63) is acceptable for most applications but should be verified in circuits with tight gain requirements. Active product status and Tape & Reel packaging support production volumes.

Q: What is the difference between BCX5610TA and BCX5616TA?

A: Both are Diodes Incorporated SOT-89-3 parts with identical voltage and current ratings. The primary difference is DC current gain: BCX5610TA specifies 63 hFE minimum, while BCX5616TA specifies 100 hFE minimum. Selection depends on circuit gain requirements. BCX5616TA is preferred for applications requiring higher current amplification.

Q: Are Nexperia BCX56 variants (BCX56,115, BCX56-10,115, BCX56-16,115) compatible with SOT-89-3 footprints?

A: Yes. Nexperia BCX56 variants use SOT-89 package, which is mechanically and electrically compatible with SOT-89-3 footprints. Pin configuration and lead spacing are identical. Enhanced power rating (1.25 W) and transition frequency (180 MHz) provide performance margin.

Q: Why does BCP56T1G use a different package (SOT-223)?

A: BCP56T1G is an onsemi alternative with equivalent electrical specifications but different package format. SOT-223 (TO-261) is selected when PCB layout requires larger package footprint or when SOT-223 is the established standard. This part is not a direct drop-in replacement due to different pin configuration and footprint.

Q: What is the significance of the hFE variation across substitute parts?

A: DC current gain (hFE) determines base current requirements for a given collector current. The original DCX56-13 specifies 63 hFE minimum. Substitutes range from 40 to 100 hFE minimum. Lower hFE (40) requires higher base current; higher hFE (100) requires lower base current. Circuit design must accommodate the selected part's gain specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitutes are ROHS3 compliant and REACH unaffected, matching the original DCX56-13 compliance status.

Q: What is the operating temperature difference between DCX56-13 and its substitutes?

A: The original DCX56-13 operates from -55°C to 150°C. Diodes Incorporated substitutes (BCX5610TA, BCX5616TA, BCX56TA) extend the lower limit to -65°C, providing 10°C additional cold-temperature margin. Nexperia variants maintain -55°C to 150°C range. onsemi BCP56T1G operates -65°C to 150°C. Selection depends on application temperature requirements.

Q: Can transition frequency differences affect circuit performance?

A: Yes. The original DCX56-13 specifies 200 MHz transition frequency. Most substitutes specify 150 MHz (Diodes Incorporated) or 180 MHz (Nexperia). Lower transition frequency may limit high-frequency switching performance. For applications operating above 150 MHz, verify that the selected substitute meets frequency requirements.

Q: What packaging options are available for production?

A: Diodes Incorporated substitutes are available in Tape & Reel (TR) and Cut Tape (CT) formats. Nexperia variants offer both TR and CT options. onsemi BCP56T1G is available in CT & Digi-Reel format. Bulk packaging is available for select Nexperia parts. Packaging selection depends on production volume and assembly equipment compatibility.

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