2SD20000P Equivalent & Substitute Parts

Part Overview

The 2SD20000P is an NPN bipolar junction transistor manufactured by Panasonic Electronic Components, rated for 60 V collector-emitter breakdown voltage and 4 A maximum collector current. This device is packaged in TO-220-3 through-hole configuration and is rated for 2 W maximum power dissipation with an 80 MHz transition frequency. The 2SD20000P is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain compatibility with the original electrical specifications and mechanical form factor while offering active product status and current availability.

Key Parameters

Parameter	2SD20000P	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	60	V
Current - Collector (Ic) (Max)	4	A
Power - Max	2	W
Frequency - Transition	80	MHz
Vce Saturation (Max) @ Ib, Ic	1.5V @ 400mA, 4A	V
DC Current Gain (hFE) (Min) @ Ic, Vce	120 @ 1A, 4V	—
Mounting Type	Through Hole	—
Package / Case	TO-220-3	—
Operating Temperature (Max)	150	°C

Substitute Part Grouping Explanation

Substitution of the 2SD20000P is determined by the following critical electrical and mechanical parameters:

Voltage Rating: The collector-emitter breakdown voltage must be equal to or greater than 60 V to maintain voltage margin in the original circuit.

Current Rating: The maximum collector current must be equal to or greater than 4 A to support the design current requirements.

Power Dissipation: The maximum power rating must be equal to or greater than 2 W to handle thermal load without derating.

Frequency Response: The transition frequency should be considered for high-frequency applications; the 80 MHz specification of the original part establishes a baseline for signal integrity.

Package Compatibility: All substitute parts must use TO-220-3 through-hole packaging to ensure mechanical and thermal interface compatibility with existing PCB layouts and heatsinking arrangements.

Saturation Characteristics: Vce saturation at specified current levels affects switching performance and power efficiency in switching applications.

Substitute parts are grouped into three categories based on these parameters: direct electrical equivalents with matching or superior ratings, parts with higher current capacity suitable for higher-power variants, and parts with lower current capacity suitable for reduced-current applications where voltage and package compatibility are maintained.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) A	Vce(br) V	Power W	fT MHz	Vce Sat @ Ib, Ic	hFE (Min)	Status
2SD20000P	Panasonic	4	60	2	80	1.5V @ 400mA, 4A	120 @ 1A, 4V	Obsolete
2ST31A	STMicroelectronics	3	60	40	—	1.2V @ 375mA, 3A	100 @ 20mA, 4V	Active
TIP31A	Solid State Inc.	3	60	40	3	1.2V @ 375mA, 3A	25 @ 1A, 4V	Active
TIP29AG	onsemi	1	60	2	3	700mV @ 125mA, 1A	15 @ 1A, 4V	Active
TIP41AG	onsemi	6	60	2	3	1.5V @ 600mA, 6A	15 @ 3A, 4V	Last Time Buy
D44H8	STMicroelectronics	10	60	50	—	1V @ 400mA, 8A	40 @ 4A, 1V	Active
MJE3055T	NTE Electronics, Inc	10	60	75	2	8V @ 3.3A, 10A	20 @ 4A, 4V	Active
MJE3055TG	onsemi	10	60	75	2	8V @ 3.3A, 10A	20 @ 4A, 4V	Active
2N6292G	onsemi	7	70	40	4	3.5V @ 3A, 7A	30 @ 2A, 4V	Active
2N6487G	onsemi	15	60	1.8	5	3.5V @ 5A, 15A	20 @ 5A, 4V	Active

Engineering Selection Recommendations

Direct Equivalent (Reduced Current Capacity): The 2ST31A and TIP31A are suitable substitutes for applications where collector current does not exceed 3 A. Both parts maintain the 60 V voltage rating and TO-220-3 package. The 2ST31A is ROHS3 compliant and carries MSL 1 rating. The TIP31A offers higher power dissipation (40 W) and is ROHS3 compliant. Both are in active production status.

Matched Current Capacity: The TIP41AG provides 6 A collector current capacity with 60 V voltage rating and maintains the TO-220-3 package. This part is suitable for applications requiring current capacity above the original 4 A specification. The TIP41AG is ROHS3 compliant and REACH unaffected. Product status is Last Time Buy, indicating limited future availability.

Higher Current Capacity: The D44H8, MJE3055T, and MJE3055TG are rated for 10 A collector current with 60 V voltage rating. These parts are suitable for applications requiring significant current margin or higher power dissipation. The D44H8 is manufactured by STMicroelectronics with 50 W power rating. The MJE3055T (NTE Electronics) and MJE3055TG (onsemi) both offer 75 W power dissipation. All three are ROHS3 compliant and in active production status.

Extended Voltage Rating: The 2N6292G offers 70 V collector-emitter breakdown voltage with 7 A current capacity, providing voltage margin above the original 60 V specification. This part is ROHS3 compliant, REACH unaffected, and in active production status.

Lower Current Capacity: The TIP29AG is rated for 1 A collector current with 60 V voltage rating and 2 W power dissipation, matching the power specification of the original part. This part is suitable only for applications with reduced current requirements. The TIP29AG is ROHS3 compliant and REACH unaffected.

All recommended substitutes maintain TO-220-3 through-hole packaging and NPN transistor type. Selection should be based on specific circuit current requirements, thermal management capabilities, and production timeline constraints related to product status.

Frequently Asked Questions (FAQ)

Q: Can the 2ST31A replace the 2SD20000P in all applications?

A: The 2ST31A is suitable for applications where the collector current does not exceed 3 A. The original 2SD20000P is rated for 4 A maximum collector current. If the circuit requires the full 4 A capacity, the 2ST31A is not appropriate. Both parts share the same 60 V voltage rating and TO-220-3 package.

Q: What is the difference between MJE3055T and MJE3055TG?

A: Both parts have identical electrical specifications: 10 A collector current, 60 V voltage rating, and 75 W power dissipation. The primary difference is the manufacturer—MJE3055T is supplied by NTE Electronics, Inc, while MJE3055TG is supplied by onsemi. The MJE3055TG carries ROHS3 compliance and REACH unaffected status, while the MJE3055T has vendor-undefined REACH status.

Q: Is the TIP41AG a direct replacement for the 2SD20000P?

A: The TIP41AG is not a direct replacement but a suitable upgrade. It provides 6 A collector current capacity compared to the original 4 A, with the same 60 V voltage rating and TO-220-3 package. The TIP41AG is in Last Time Buy status, indicating limited future availability. For new designs, consider the D44H8 or MJE3055TG as alternatives with better long-term availability.

Q: Why does the 2N6487G have lower power rating (1.8 W) than the 2SD20000P (2 W) despite higher current capacity?

A: Power dissipation rating is determined by thermal design and package characteristics, not solely by current capacity. The 2N6487G is rated for 15 A collector current but has a lower power dissipation limit due to its thermal characteristics. This part is suitable for high-current, low-power applications but not for applications requiring sustained 2 W dissipation at lower currents.

Q: Can I use the 2N6292G as a substitute if my circuit operates at 60 V?

A: The 2N6292G is rated for 70 V collector-emitter breakdown voltage, which provides additional voltage margin. However, it is rated for 7 A collector current, exceeding the original 4 A specification. The 2N6292G is suitable if your circuit can accommodate the higher current capacity. The part is ROHS3 compliant and in active production status.

Q: What is the significance of the TO-220-3 package requirement?

A: The TO-220-3 package is a three-lead through-hole configuration with standardized mechanical dimensions and thermal interface characteristics. All substitute parts must use this package to ensure compatibility with existing PCB layouts, mounting hardware, and heatsinking arrangements. Deviations in package type would require PCB redesign.

Q: Are all substitute parts RoHS compliant?

A: Most substitute parts listed are ROHS3 compliant. The TIP29A and TIP31A do not have RoHS status specified in the provided data. If RoHS compliance is a requirement for your application, verify compliance status with the manufacturer or supplier before selection.

Q: Which substitute offers the best long-term availability?

A: The D44H8, MJE3055TG, 2ST31A, and 2N6292G are all in active production status, indicating ongoing availability. The TIP41AG is in Last Time Buy status, indicating limited future availability. For new designs requiring long-term supply assurance, select from the active production parts.

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