2SB1073-R-AP Equivalent & Substitute Parts

Part Overview

The 2SB1073-R-AP is a Surface Mount PNP Bipolar Junction Transistor manufactured by Micro Commercial Co, rated for 20V collector-emitter breakdown voltage and 4A maximum collector current. The device is packaged in SOT-89 (TO-243AA) configuration with 1W power dissipation capability and operates at frequencies up to 120MHz. This part is classified as Obsolete, necessitating identification of equivalent substitute components for ongoing production and maintenance applications. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating available packaging and product status constraints.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Voltage - Collector Emitter Breakdown (Max)	20	V
Current - Collector (Ic) (Max)	4	A
Power - Max	1	W
Frequency - Transition	120	MHz
Operating Temperature (Max)	150	°C
Package / Case	TO-243AA	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the 2SB1073-R-AP is determined by the following critical parameters:

Mandatory Compatibility Criteria:

Transistor Type: PNP (all substitutes must be PNP configuration)
Voltage - Collector Emitter Breakdown (Max): 20V minimum (substitutes rated at 20V or higher are acceptable)
Current - Collector (Ic) (Max): 4A minimum (substitutes rated at 4A or higher are acceptable)
Package / Case: TO-243AA (physical and electrical footprint compatibility)
Mounting Type: Surface Mount (all candidates are surface mount)
RoHS Status: ROHS3 Compliant (environmental compliance requirement)

Secondary Compatibility Parameters:

Power - Max: 1W minimum (substitutes with equal or greater power rating are acceptable)
Frequency - Transition: 120MHz minimum (substitutes with equal or greater frequency capability are acceptable)
Operating Temperature: 150°C maximum junction temperature (substitutes with equal or greater temperature rating are acceptable)

All three substitute parts meet or exceed the mandatory criteria. Substitutes with higher current ratings, power dissipation, or frequency capability provide enhanced performance margins without compromising circuit compatibility.

Parameter Comparison

Parameter	2SB1073-R-AP (Main)	2DB1386Q-13	2SB1302S-TD-E	2SB1386T100Q
Manufacturer	Micro Commercial Co	Diodes Incorporated	onsemi	Rohm Semiconductor
Transistor Type	PNP	PNP	PNP	PNP
Voltage - Collector Emitter Breakdown (Max)	20V	20V	20V	20V
Current - Collector (Ic) (Max)	4A	5A	5A	5A
Power - Max	1W	1W	1.3W	2W
Frequency - Transition	120MHz	100MHz	320MHz	120MHz
Operating Temperature (Max)	150°C	150°C	150°C	150°C
Package / Case	TO-243AA	TO-243AA	TO-243AA	TO-243AA
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Obsolete	Active	Obsolete	Not For New Designs

Engineering Selection Recommendations

2DB1386Q-13 (Diodes Incorporated)

This substitute is rated for 5A collector current and 1W power dissipation, exceeding the 4A and 1W specifications of the 2SB1073-R-AP. The device maintains 20V breakdown voltage and 150°C maximum junction temperature. Product status is Active, indicating current manufacturing availability and long-term supply continuity. ROHS3 compliance and Unlimited moisture sensitivity level (MSL 1) are maintained. Transition frequency of 100MHz is slightly lower than the main part but remains within acceptable operating parameters for most applications. This part is suitable for new designs and ongoing production.

2SB1302S-TD-E (onsemi)

This substitute provides 5A collector current, 1.3W power dissipation, and 320MHz transition frequency, all exceeding main part specifications. The 20V breakdown voltage and 150°C maximum junction temperature match the main part requirements. Product status is Obsolete, limiting long-term supply assurance. ROHS3 compliance and REACH Unaffected status are maintained. The enhanced frequency capability and power rating provide performance margin but do not address supply continuity concerns.

2SB1386T100Q (Rohm Semiconductor)

This substitute is rated for 5A collector current and 2W power dissipation, providing the highest performance margin among available options. The 20V breakdown voltage and 150°C maximum junction temperature are maintained. Transition frequency of 120MHz matches the main part specification. Product status is Not For New Designs, indicating limited future availability. ROHS3 compliance and REACH Unaffected status are maintained. This part is suitable for legacy system maintenance but not recommended for new design implementations.

Primary Recommendation: 2DB1386Q-13 is the preferred substitute due to Active product status, ensuring supply availability and manufacturing support. All electrical parameters meet or exceed main part specifications.

Frequently Asked Questions (FAQ)

Q: Can the 2DB1386Q-13 be used as a direct replacement for the 2SB1073-R-AP?

A: Yes. The 2DB1386Q-13 meets all mandatory compatibility criteria: PNP transistor type, 20V breakdown voltage, 5A collector current (exceeds 4A requirement), TO-243AA package, surface mount configuration, and ROHS3 compliance. The 1W power rating matches the main part specification. No circuit modifications are required for electrical compatibility.

Q: What is the significance of the higher collector current rating in substitute parts?

A: Substitute parts rated for 5A collector current provide operational margin beyond the 4A specification of the 2SB1073-R-AP. This higher rating does not alter circuit behavior when operating at or below 4A. The device operates within its safe operating area at the original design current, with reduced thermal stress and extended component life.

Q: Why is product status relevant to part selection?

A: Product status indicates manufacturing availability and long-term supply assurance. Active status (2DB1386Q-13) ensures continued production and availability for both current and future orders. Obsolete status (2SB1302S-TD-E) indicates discontinued manufacturing, creating supply risk. Not For New Designs status (2SB1386T100Q) restricts use to maintenance and legacy applications only.

Q: Are there package compatibility concerns between SOT-89 and TO-243AA designations?

A: No. SOT-89 and TO-243AA refer to the same physical package configuration. Both designations describe a three-lead surface mount package with identical pin spacing, dimensions, and PCB footprint. All substitute parts are electrically and mechanically compatible with existing PCB layouts designed for the 2SB1073-R-AP.

Q: How do transition frequency differences affect circuit performance?

A: The 2SB1073-R-AP operates at 120MHz transition frequency. The 2DB1386Q-13 operates at 100MHz, while the 2SB1302S-TD-E operates at 320MHz. For applications operating below 100MHz, all substitutes are functionally equivalent. Applications requiring operation near or above 100MHz should verify that the selected substitute frequency specification meets circuit bandwidth requirements.

Q: What compliance certifications are maintained across all substitute parts?

A: All substitute parts maintain ROHS3 compliance, meeting environmental and hazardous substance restrictions. The 2DB1386Q-13 and 2SB1386T100Q include REACH Unaffected status. Moisture sensitivity level (MSL 1 - Unlimited) is consistent across all parts, indicating no special handling or storage requirements during manufacturing and assembly.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message