2SB1308-R-TP Equivalent & Substitute Parts

Part Overview

The 2SB1308-R-TP is a Surface Mount PNP Bipolar Junction Transistor manufactured by Micro Commercial Co, rated for 20V collector-emitter breakdown voltage and 3A maximum collector current. This component is classified as Obsolete, necessitating identification of equivalent substitute parts for ongoing production and maintenance applications. The part is housed in a SOT-89 package (TO-243AA) and operates across an extended temperature range of -55°C to 150°C.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Current - Collector (Ic) Max	3	A
Voltage - Collector Emitter Breakdown (Max)	20	V
Power - Max	500	mW
Frequency - Transition	50	MHz
Operating Temperature Range	-55 to 150	°C
Package / Case	TO-243AA (SOT-89)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the 2SB1308-R-TP is determined by strict equivalence across the following critical electrical and mechanical parameters:

Mandatory Matching Parameters:

Transistor Type: PNP
Current - Collector (Ic) Max: 3 A (minimum)
Voltage - Collector Emitter Breakdown (Max): 20 V (minimum)
Package / Case: TO-243AA (SOT-89)
Mounting Type: Surface Mount
RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

Power - Max: Equal to or greater than 500 mW
Frequency - Transition: Equal to or greater than 50 MHz
Operating Temperature Range: Must encompass or exceed the specified range
Product Status: Active status preferred for long-term availability

Both identified substitute parts meet all mandatory matching parameters and exceed performance specifications in power dissipation and transition frequency, ensuring direct functional compatibility.

Parameter Comparison

Parameter	2SB1308-R-TP (Main)	2PB1424,115	PBSS5320X,135
Manufacturer	Micro Commercial Co	Nexperia USA Inc.	Nexperia USA Inc.
Transistor Type	PNP	PNP	PNP
Current - Collector (Ic) Max	3 A	3 A	3 A
Voltage - Collector Emitter Breakdown (Max)	20 V	20 V	20 V
Power - Max	500 mW	2 W	1.6 W
Frequency - Transition	50 MHz	125 MHz	100 MHz
Operating Temperature (TJ)	-55 to 150 °C	150 °C	150 °C
Package / Case	TO-243AA (SOT-89)	TO-243AA (SOT-89)	TO-243AA (SOT-89)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Qualification	—	—	AEC-Q100

Engineering Selection Recommendations

2PB1424,115 (Nexperia USA Inc.)

This substitute part is classified as Active, ensuring long-term availability and supply chain continuity. It provides enhanced performance specifications with 2W maximum power dissipation and 125MHz transition frequency, both exceeding the original 2SB1308-R-TP ratings. The part maintains full electrical equivalence across all mandatory parameters and is ROHS3 compliant. This option is suitable for general-purpose applications requiring direct replacement without design modification.

PBSS5320X,135 (Nexperia USA Inc.)

This substitute part is classified as Active and carries AEC-Q100 automotive qualification, indicating compliance with automotive-grade reliability standards. It delivers 1.6W maximum power dissipation and 100MHz transition frequency, both exceeding original specifications. The lower DC current gain specification (150 @ 2A, 2V versus 180 @ 500mA, 2V) and improved saturation voltage characteristics (300mV @ 300mA, 3A) position this part for applications requiring enhanced switching performance and automotive-grade reliability. ROHS3 compliance and REACH unaffected status are confirmed.

Both substitute parts eliminate obsolescence risk through Active product status while maintaining or exceeding the electrical and thermal performance envelope of the original component.

Frequently Asked Questions (FAQ)

Q: Can the 2PB1424,115 or PBSS5320X,135 be used as direct replacements for the 2SB1308-R-TP without circuit modification?

A: Yes. Both substitute parts match the mandatory electrical parameters (3A collector current, 20V breakdown voltage, PNP type) and physical package (SOT-89). The enhanced power ratings and transition frequencies provide additional performance margin. No circuit modification is required for functional substitution.

Q: What is the significance of the AEC-Q100 qualification on the PBSS5320X,135?

A: AEC-Q100 qualification indicates the part meets automotive-grade reliability and quality standards established by the Automotive Electronics Council. This certification is relevant for applications requiring automotive-grade component traceability and performance consistency, though it does not affect general-purpose electronic applications.

Q: Are there differences in saturation voltage characteristics between the substitute parts?

A: Yes. The 2SB1308-R-TP specifies 450mV saturation voltage at 150mA/1.5A. The 2PB1424,115 specifies 500mV at 100mA/2A, while the PBSS5320X,135 specifies 300mV at 300mA/3A. These differences reflect different measurement conditions and transistor design characteristics. Selection should account for specific circuit switching requirements.

Q: Do the substitute parts have identical operating temperature ranges?

A: The substitute parts specify a maximum junction temperature (TJ) of 150°C, matching the upper limit of the original part. The original 2SB1308-R-TP specifies -55°C to 150°C. For applications requiring operation below 0°C, the original specification should be confirmed with the substitute manufacturer.

Q: What is the inventory status of these substitute parts?

A: The 2PB1424,115 has 3,100 pieces in stock, and the PBSS5320X,135 has 9,044 pieces in stock. Both are classified as Active products, ensuring ongoing availability for production and maintenance applications.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the 2PB1424,115 and PBSS5320X,135 are ROHS3 compliant, matching the compliance status of the original 2SB1308-R-TP. The PBSS5320X,135 is additionally confirmed as REACH unaffected.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message