DSC5501T0L Equivalent & Substitute Parts

Part Overview

The DSC5501T0L is a Panasonic Electronic Components NPN bipolar junction transistor (BJT) designed for surface mount applications in the SMini3-F2-B package. This device is rated for 20 V collector-emitter breakdown voltage, 500 mA maximum collector current, and 150 mW power dissipation with a transition frequency of 150 MHz. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain electrical compatibility within the specified parameter ranges while accommodating potential package and performance variations.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Collector Current (Max)	500	mA
Collector-Emitter Breakdown Voltage (Max)	20	V
Power Dissipation (Max)	150	mW
Transition Frequency	150	MHz
DC Current Gain (hFE Min)	200	@ 500mA, 2V
Operating Temperature (Max)	150	°C
Mounting Type	Surface Mount	—
RoHS Status	RoHS Compliant	—

Substitute Part Grouping Explanation

Substitute parts for the DSC5501T0L are identified based on strict electrical parameter compatibility. The primary substitution criteria are:

Mandatory Compatibility Parameters:

Transistor Type: NPN (must match exactly)
Collector Current (Max): Equal to or greater than 500 mA
Collector-Emitter Breakdown Voltage (Max): Equal to or greater than 20 V
DC Current Gain (hFE Min): Equal to or greater than 200
Operating Temperature (Max): Equal to or greater than 150°C
Mounting Type: Surface Mount

Secondary Considerations:

Power Dissipation: Equal to or greater than 150 mW
Transition Frequency: Equal to or greater than 150 MHz
RoHS Compliance: Maintained

The substitute parts identified (2SCR502U3HZGT106 and 2SCR502U3T106, both from Rohm Semiconductor) exceed the electrical specifications of the DSC5501T0L across all critical parameters. Both devices are rated for 30 V collector-emitter breakdown voltage (exceeding the 20 V requirement), maintain 500 mA collector current capability, provide 200 mW power dissipation (exceeding 150 mW), and operate at 360 MHz transition frequency (exceeding 150 MHz). Both are active products with current availability and full RoHS3 compliance.

Parameter Comparison

Parameter	DSC5501T0L (Panasonic)	2SCR502U3HZGT106 (Rohm)	2SCR502U3T106 (Rohm)
Transistor Type	NPN	NPN	NPN
Collector Current (Max)	500 mA	500 mA	500 mA
Collector-Emitter Breakdown Voltage (Max)	20 V	30 V	30 V
Vce Saturation (Max)	400 mV @ 20mA, 500mA	300 mV @ 10mA, 200mA	300 mV @ 10mA, 200mA
Current - Collector Cutoff (Max)	100 nA	200 nA	200 nA
DC Current Gain (hFE Min)	200 @ 500mA, 2V	200 @ 100mA, 2V	200 @ 100mA, 2V
Power Dissipation (Max)	150 mW	200 mW	200 mW
Transition Frequency	150 MHz	360 MHz	360 MHz
Operating Temperature (Max)	150°C	150°C	150°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	SC-85 (SMini3-F2-B)	SC-70, SOT-323 (UMT3)	SC-70, SOT-323 (UMT3)
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued	Active	Active

Engineering Selection Recommendations

2SCR502U3HZGT106 (Rohm Semiconductor): This part is qualified to AEC-Q101 automotive standards and carries automotive-grade designation. It is actively manufactured and stocked with 1944 units available. The device meets all electrical requirements of the DSC5501T0L with enhanced specifications in breakdown voltage (30 V vs. 20 V), power dissipation (200 mW vs. 150 mW), and transition frequency (360 MHz vs. 150 MHz). ROHS3 compliance and REACH unaffected status provide regulatory alignment. The UMT3 package (SC-70, SOT-323) differs from the original SMini3-F2-B package and requires PCB layout verification.

2SCR502U3T106 (Rohm Semiconductor): This part is functionally identical to the 2SCR502U3HZGT106 in electrical specifications and performance characteristics. It is actively manufactured with 811 units in stock. The device provides the same parameter advantages and regulatory compliance. The primary distinction is the absence of automotive-grade qualification. The UMT3 package (SC-70, SOT-323) requires the same PCB layout consideration as the automotive variant.

Both substitute parts are suitable for direct electrical replacement. Selection between them depends on application requirements: the 2SCR502U3HZGT106 is specified for automotive applications, while the 2SCR502U3T106 serves general industrial and consumer applications. Package footprint differences necessitate PCB redesign or adapter consideration.

Frequently Asked Questions (FAQ)

Q: Can the 2SCR502U3HZGT106 or 2SCR502U3T106 directly replace the DSC5501T0L without circuit modification?

A: Both Rohm devices meet or exceed all electrical specifications of the DSC5501T0L. However, the package change from SMini3-F2-B (SC-85) to UMT3 (SC-70, SOT-323) requires PCB footprint modification. Electrical circuit operation remains compatible without component value changes.

Q: What is the difference between the 2SCR502U3HZGT106 and 2SCR502U3T106?

A: Both devices are electrically identical with matching specifications. The 2SCR502U3HZGT106 carries AEC-Q101 automotive qualification and automotive-grade designation, making it suitable for automotive applications. The 2SCR502U3T106 lacks automotive qualification and is specified for general industrial and consumer use. Selection depends on application requirements.

Q: Why do the substitute parts have higher breakdown voltage (30 V vs. 20 V)?

A: The Rohm devices are designed with enhanced voltage ratings that exceed the DSC5501T0L specification. This provides additional design margin and does not negatively impact circuit operation. Circuits designed for 20 V operation function correctly with 30 V rated devices.

Q: Are there package compatibility considerations?

A: Yes. The DSC5501T0L uses the SMini3-F2-B package (SC-85), while both substitute parts use the UMT3 package (SC-70, SOT-323). These packages have different footprints and pin configurations. PCB layout redesign is required for physical mounting. Pin-to-pin electrical functionality remains compatible.

Q: Do the substitute parts maintain RoHS compliance?

A: Yes. Both 2SCR502U3HZGT106 and 2SCR502U3T106 are ROHS3 compliant, exceeding the RoHS compliance status of the original DSC5501T0L. Both are REACH unaffected.

Q: What is the current availability of substitute parts?

A: The 2SCR502U3HZGT106 has 1944 units in stock. The 2SCR502U3T106 has 811 units in stock. Both are active products with ongoing manufacturing support, unlike the discontinued DSC5501T0L.

Q: Are there performance differences in switching speed or frequency response?

A: The substitute parts feature 360 MHz transition frequency compared to the DSC5501T0L's 150 MHz. This represents enhanced high-frequency performance and does not create compatibility issues in circuits designed for the original device. Applications requiring frequencies up to 150 MHz operate within the capability envelope of both substitute parts.

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