2SD2389 Equivalent & Substitute Parts Engineering Reference

Part Overview

The Sanken Electric USA Inc. 2SD2389 is an NPN Darlington Bipolar Junction Transistor (BJT) designed for high-voltage, high-current switching applications. With a collector-emitter voltage of 150V and a maximum collector current of 8A, it is suitable for demanding power applications. The product status is listed as obsolete. When electronic components become obsolete, it is necessary to identify alternative models with electrically and mechanically compatible parameters to maintain or repair systems that originally incorporated the 2SD2389 transistor.

Key Parameters

Parameter	Value
Manufacturer	Sanken Electric USA Inc.
Category	Transistors, Bipolar (BJT)
Transistor Type	NPN - Darlington
Voltage - Collector Emitter Breakdown (Max)	150 V
Current - Collector (Ic) (Max)	8 A
Power - Max	80 W
DC Current Gain (hFE) (Min) @ Ic, Vce	5000 @ 6A, 4V
Vce Saturation (Max) @ Ib, Ic	2.5V @ 6mA, 6A
Frequency - Transition	80MHz
Current - Collector Cutoff (Max)	100µA (ICBO)
Operating Temperature	150°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-3P-3, SC-65-3
Supplier Device Package	TO-3P
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

The substitute part is selected strictly based on matching the core electrical and mechanical parameters of the main part number. Key parameters considered for substitution include:

Transistor Type (NPN Darlington)
Voltage - Collector Emitter Breakdown (Max)
Current - Collector (Ic) (Max)
Power - Max
DC Current Gain (hFE) (Min) at specified test conditions
Vce Saturation (Max) at specified Ib and Ic
Frequency - Transition
Current - Collector Cutoff (Max)
Operating Temperature
Mounting Type
Package / Case
RoHS Status
Moisture Sensitivity Level (MSL)

Only parts fully aligning with these critical specifications are included as substitutes.

Parameter Comparison

Parameter	2SD2389	2SD2390
Manufacturer	Sanken Electric USA Inc.	Sanken Electric USA Inc.
Category	Transistors, Bipolar (BJT)	Transistors, Bipolar (BJT)
Transistor Type	NPN - Darlington	NPN - Darlington
Voltage - Collector Emitter Breakdown (Max)	150 V	150 V
Current - Collector (Ic) (Max)	8 A	10 A
Power - Max	80 W	100 W
DC Current Gain (hFE) (Min) @ Ic, Vce	5000 @ 6A, 4V	5000 @ 7A, 4V
Vce Saturation (Max) @ Ib, Ic	2.5V @ 6mA, 6A	2.5V @ 7mA, 7A
Frequency - Transition	80MHz	55MHz
Current - Collector Cutoff (Max)	100µA (ICBO)	100µA (ICBO)
Operating Temperature	150°C (TJ)	150°C (TJ)
Mounting Type	Through Hole	Through Hole
Package / Case	TO-3P-3, SC-65-3	TO-3P-3, SC-65-3
Supplier Device Package	TO-3P	TO-3P
RoHS Status	RoHS Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The 2SD2389 is listed as obsolete. The substitute 2SD2390 from the same manufacturer is currently active, with RoHS and MSL compliance provided. Both models share the same package, mounting configuration, and critical environmental compliance specifications, supporting direct substitution within the defined parameters.

Frequently Asked Questions (FAQ)

Q1: What determines if 2SD2390 can substitute 2SD2389?
A1: The 2SD2390 matches or exceeds all critical electrical parameters, mechanical package, mounting type, and environmental compliance as specified for the 2SD2389.

Q2: Are there any compatibility concerns regarding package or mounting?
A2: Both 2SD2389 and 2SD2390 use the TO-3P-3, SC-65-3 case, with through-hole mounting, ensuring mechanical compatibility as per the provided information.

Q3: What compliance and certification considerations apply for substitution?
A3: Both parts meet RoHS requirements and are designated moisture insensitive (MSL: 1 Unlimited). The substitute 2SD2390 is classified as ROHS3 Compliant.

Q4: How is DC gain compared between the two parts?
A4: Both the 2SD2389 and 2SD2390 specify a minimum DC current gain (hFE) of 5000 at closely matched operating points.

Q5: What are the main differences relevant to substitution?
A5: The primary differences are collector current (10A vs 8A), maximum power dissipation (100W vs 80W), and transition frequency (55MHz for 2SD2390 vs 80MHz for 2SD2389), all per explicit input parameters.

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