Equivalent & Substitute Parts for 2SC581300L

Part Overview

The 2SC581300L is an NPN bipolar junction transistor manufactured by Panasonic Electronic Components, rated for 80 V collector-emitter breakdown voltage and 1.5 A maximum collector current. This device is designed for surface mount applications in the Mini3-G1 package configuration and operates at a maximum junction temperature of 150°C with a transition frequency of 180 MHz.

The 2SC581300L is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	80	V
Current - Collector (Ic) (Max)	1.5	A
Power - Max	600	mW
Frequency - Transition	180	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
Vce Saturation (Max) @ Ib, Ic	500mV @ 20mA, 1A	—
DC Current Gain (hFE) (Min) @ Ic, Vce	200 @ 100mA, 2V	—

Substitute Part Grouping Explanation

Substitution of the 2SC581300L is determined by matching the following critical electrical and mechanical parameters:

Primary Matching Criteria:

Transistor Type: NPN configuration
Voltage - Collector Emitter Breakdown (Max): 80 V minimum
Current - Collector (Ic) (Max): 1.5 A or greater
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3 or equivalent surface mount packages
Operating Temperature: 150°C maximum junction temperature

Secondary Compatibility Factors:

Power dissipation capability: 600 mW or greater
Transition frequency: 180 MHz or greater
Vce saturation characteristics
DC current gain (hFE) specifications

Substitute parts are grouped into two categories based on these parameters:

Category A - Direct Electrical Equivalents (1.5 A Current Rating): Parts matching the 1.5 A collector current specification with compatible voltage and package ratings.

Category B - Functional Alternatives (Lower Current Ratings): Parts with reduced current ratings (0.1 A to 0.7 A) suitable for applications where the full 1.5 A capability is not required.

Category C - Enhanced Performance Alternatives (Higher Current Ratings): Parts exceeding the 1.5 A specification, suitable for applications requiring additional current capacity.

Parameter Comparison

Parameter	2SC581300L	2SCR554RTL	2SCR514RTL	2SCR544RTL	FMMT620TA	MMBT8099LT1G	BSS64LT1G	BSS64,215
Manufacturer	Panasonic	Rohm	Rohm	Rohm	Diodes Inc.	onsemi	onsemi	Nexperia
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	80 V	80 V	80 V	80 V	80 V	80 V	80 V	80 V
Current - Collector (Ic) (Max)	1.5 A	1.5 A	700 mA	2.5 A	1.5 A	500 mA	100 mA	100 mA
Power - Max	600 mW	1 W	1 W	1 W	625 mW	225 mW	225 mW	250 mW
Frequency - Transition	180 MHz	300 MHz	320 MHz	280 MHz	160 MHz	150 MHz	60 MHz	100 MHz
Operating Temperature (TJ)	150°C	150°C	150°C	150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C	150°C
Package / Case	TO-236-3, SC-59, SOT-23-3	SC-96	SC-96	SC-96	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Vce Saturation (Max) @ Ib, Ic	500mV @ 20mA, 1A	300mV @ 25mA, 500mA	300mV @ 15mA, 300mA	300mV @ 50mA, 1A	200mV @ 50mA, 1.5A	400mV @ 5mA, 100mA	200mV @ 15mA, 50mA	200mV @ 15mA, 50mA
DC Current Gain (hFE) (Min) @ Ic, Vce	200 @ 100mA, 2V	120 @ 100mA, 3V	120 @ 100mA, 3V	120 @ 100mA, 3V	300 @ 200mA, 2V	100 @ 1mA, 5V	20 @ 10mA, 1V	20 @ 10mA, 1V
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Not For New Designs
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Category A - 1.5 A Rating):

The 2SCR554RTL (Rohm Semiconductor) provides the closest electrical match to the 2SC581300L. Both devices are rated for 1.5 A collector current and 80 V breakdown voltage. The 2SCR554RTL is in active product status with ROHS3 compliance and unlimited moisture sensitivity level. The primary difference is the package type: the 2SCR554RTL uses SC-96 (TSMT3) instead of the Mini3-G1 package. This substitution is suitable when PCB layout can accommodate the SC-96 package footprint.

The FMMT620TA (Diodes Incorporated) is an alternative direct replacement with identical 1.5 A and 80 V ratings in the TO-236-3/SOT-23-3 package, matching the original package family. This device is active and ROHS3 compliant with an extended operating temperature range of -55°C to 150°C.

For Enhanced Current Capacity (Category C - 2.5 A Rating):

The 2SCR544RTL (Rohm Semiconductor) is rated for 2.5 A collector current, exceeding the 1.5 A specification of the 2SC581300L. This part is suitable for applications requiring additional current margin or future design upgrades. It maintains the 80 V breakdown voltage and is active with ROHS3 compliance.

For Reduced Current Applications (Category B - Lower Current Ratings):

The MMBT8099LT1G (onsemi) is rated for 500 mA and is suitable for applications where the full 1.5 A capability is not required. This device is in the TO-236-3/SOT-23-3 package family and is active with ROHS3 compliance.

The BSS64LT1G (onsemi) is rated for 100 mA and is appropriate only for low-current signal applications. This device is active and ROHS3 compliant with an extended operating temperature range.

Compliance and Regulatory Status:

All recommended active substitutes are ROHS3 compliant and REACH unaffected. The BSS64,215 (Nexperia) carries AEC-Q101 automotive qualification but is marked as "Not For New Designs" and should not be selected for new applications.

Frequently Asked Questions (FAQ)

Q: Can the 2SCR554RTL directly replace the 2SC581300L without circuit modifications?

A: The 2SCR554RTL matches the electrical specifications (1.5 A, 80 V) but uses a different package type (SC-96/TSMT3 versus Mini3-G1). PCB layout and footprint compatibility must be verified. If the PCB is designed for Mini3-G1, the FMMT620TA is a more suitable direct replacement as it uses the TO-236-3/SOT-23-3 package family.

Q: What is the difference between the Mini3-G1 and SC-96 packages?

A: Mini3-G1 and SC-96 are both surface mount packages for small-signal and medium-power transistors, but they have different physical dimensions and pin configurations. PCB footprints are not interchangeable without redesign. Consult package datasheets for specific dimensional requirements.

Q: Is the FMMT620TA suitable for all applications currently using the 2SC581300L?

A: The FMMT620TA is electrically compatible with the 2SC581300L for applications requiring up to 1.5 A collector current and 80 V breakdown voltage. Both devices are in the TO-236-3/SOT-23-3 package family. The FMMT620TA has a lower transition frequency (160 MHz versus 180 MHz), which may affect high-frequency applications. Verify frequency requirements for your specific circuit.

Q: Can I use the 2SCR544RTL (2.5 A) as a substitute for the 2SC581300L (1.5 A)?

A: Yes, the 2SCR544RTL can be used as a substitute. The higher current rating (2.5 A) provides additional design margin and is backward compatible with circuits designed for 1.5 A operation. However, the SC-96 package differs from the Mini3-G1, requiring PCB layout verification.

Q: Why is the BSS64LT1G not recommended as a primary substitute?

A: The BSS64LT1G is rated for only 100 mA collector current, which is significantly lower than the 2SC581300L specification of 1.5 A. This device is suitable only for low-current signal applications and cannot support circuits requiring the full 1.5 A capability.

Q: Are all substitute parts ROHS3 compliant?

A: All active substitute parts listed (2SCR554RTL, 2SCR514RTL, 2SCR544RTL, FMMT620TA, MMBT8099LT1G, and BSS64LT1G) are ROHS3 compliant. The BSS64,215 is also ROHS3 compliant but is marked "Not For New Designs" and should not be selected for new applications.

Q: What is the moisture sensitivity level (MSL) for the substitute parts?

A: All substitute parts listed have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage and handling.

Q: How do the Vce saturation characteristics compare between the 2SC581300L and its substitutes?

A: The 2SC581300L has a Vce saturation of 500 mV at 20 mA base current and 1 A collector current. The 2SCR554RTL has 300 mV at 25 mA and 500 mA, and the FMMT620TA has 200 mV at 50 mA and 1.5 A. Lower saturation voltages indicate better switching efficiency. Verify saturation characteristics match your circuit requirements.

Q: Can I use multiple lower-current devices in parallel to replace the 2SC581300L?

A: Parallel connection of transistors is not recommended without additional circuit design considerations such as emitter resistors for current balancing. Consult circuit design guidelines before implementing parallel configurations.

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