Equivalent & Substitute Parts Reference for BU407-S

Part Overview

The BU407-S from Bourns Inc. is an NPN bipolar junction transistor (BJT) with a collector-emitter voltage rating of 140 V, a maximum collector current of 7 A, and a power dissipation of 60 W, housed in a TO-220-3 through-hole package. The product is classified as obsolete, making it necessary to identify compatible substitute parts that match key electrical and mechanical parameters for use in both existing and new designs within the transistors, bipolar (BJT) category.

Key Parameters

Parameter	BU407-S
Transistor Type	NPN
Current - Collector (Ic) (Max)	7 A
Voltage - Collector Emitter Breakdown (Max)	140 V
Vce Saturation (Max) @ Ib, Ic	1V @ 500mA, 5A
Current - Collector Cutoff (Max)	5mA
DC Current Gain (hFE) (Min) @ Ic, Vce	12 @ 4A, 10V
Power - Max	60 W
Frequency - Transition	6MHz
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-220-3
Supplier Device Package	TO-220
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute transistors are grouped strictly according to matching the following key parameters: transistor type (NPN), collector current rating (Ic), collector-emitter voltage breakdown rating (Vce), power dissipation, package/case type (TO-220-3), and mounting type (through-hole). These parameters are essential to maintain the functional and mechanical interchangeability of the substitute parts within the same category of Transistors, Bipolar (BJT).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Transistor Type	Current - Collector (Ic) (Max)	Voltage - Collector Emitter Breakdown (Max)	Vce Saturation (Max) @ Ib, Ic	Current - Collector Cutoff (Max)	DC Current Gain (hFE) (Min) @ Ic, Vce	Power - Max	Frequency - Transition	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Product Status
BU407-S	Bourns Inc.	NPN	7 A	140 V	1V @ 500mA, 5A	5mA	12 @ 4A, 10V	60 W	6MHz	-55°C ~ 150°C (TJ)	Through Hole	TO-220-3	TO-220	ROHS3 Compliant	Obsolete
KSC2334Y	Fairchild Semiconductor	NPN	7 A	100 V	600mV @ 500mA, 5A	10µA (ICBO)	120 @ 3A, 5V	1.5 W	-	150°C (TJ)	Through Hole	TO-220-3	TO-220-3	-	Active
KSC2334YTU	onsemi	NPN	7 A	100 V	600mV @ 500mA, 5A	10µA (ICBO)	120 @ 3A, 5V	1.5 W	-	150°C (TJ)	Through Hole	TO-220-3	TO-220-3	ROHS3 Compliant	Active
MJE15030G	onsemi	NPN	8 A	150 V	500mV @ 100mA, 1A	100µA	20 @ 4A, 2V	50 W	30MHz	-65°C ~ 150°C (TJ)	Through Hole	TO-220-3	TO-220	ROHS3 Compliant	Active
TIP41C	NTE Electronics, Inc	NPN	6 A	100 V	1.5V @ 600mA, 6A	700µA	15 @ 3A, 4V	2 W	3MHz	150°C (TJ)	Through Hole	TO-220-3	TO-220-3	ROHS3 Compliant	Active

Engineering Selection Recommendations

Selection should be based on the product status and applicable certifications. Substitute parts KSC2334YTU, MJE15030G, and TIP41C are all classified as "Active" and are ROHS3 Compliant, corresponding to the compliance standards of the original BU407-S. Inventory status is available as provided. The obsolete status of BU407-S necessitates the use of these active substitutes for continuity and compliance.

Frequently Asked Questions (FAQ)

Q1: What are the crucial criteria for selecting a substitute for BU407-S?
Substitutes must match the original's transistor type (NPN), collector current (Ic), collector-emitter voltage (Vce), package type (TO-220-3), and mounting configuration (through-hole).

Q2: Are there any mechanical differences in the available substitutes?
All listed substitutes are in the TO-220-3 through-hole package, matching the mechanical form factor of BU407-S.

Q3: Is compliance status consistent across all substitute parts?
KSC2334YTU, MJE15030G, and TIP41C are all ROHS3 Compliant, aligning with the original BU407-S compliance status.

Q4: Can differences in power rating or gain impact substitution?
Only parameters explicitly provided are considered. Substitution is determined by matching the listed ratings and package.

Q5: How does the product status affect selection?
BU407-S is obsolete, while all listed substitutes are active, making them suitable for ongoing design and inventory continuity within the same product category.

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