BD239F-S Equivalent & Substitute Parts Reference

Part Overview

The BD239F-S is a Bipolar Junction Transistor (BJT) with an NPN polarity, rated for 160V collector-emitter breakdown voltage and a maximum collector current of 2A. Packaged in a TO-220-3 through-hole case, it provides 2W power dissipation capability. This part is classified as obsolete, which necessitates the selection of alternative models to maintain product functionality and support ongoing designs requiring a direct replacement.

Key Parameters

Parameter	BD239F-S
Transistor Type	NPN
Current - Collector (Ic) (Max)	2 A
Voltage - Collector Emitter Breakdown (Max)	160 V
Vce Saturation (Max) @ Ib, Ic	700mV @ 200mA, 1A
Current - Collector Cutoff (Max)	300µA
DC Current Gain (hFE) (Min) @ Ic, Vce	15 @ 1A, 4V
Power - Max	2 W
Mounting Type	Through Hole
Package / Case	TO-220-3
Supplier Device Package	TO-220
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the BD239F-S are identified strictly by matching category, mounting style, and package (TO-220-3, Through Hole), as well as by comparable or superior values for the following key electrical parameters: transistor type (NPN), maximum collector current (Ic), collector-emitter breakdown voltage, Vce saturation (at comparable test conditions), collector cutoff current, minimum DC current gain, and power dissipation. Regulatory compliance is also considered based on RoHS status.

Parameter Comparison

Parameter	BD239F-S	MJE15030G
Transistor Type	NPN	NPN
Current - Collector (Ic) (Max)	2 A	8 A
Voltage - Collector Emitter Breakdown (Max)	160 V	150 V
Vce Saturation (Max) @ Ib, Ic	700mV @ 200mA, 1A	500mV @ 100mA, 1A
Current - Collector Cutoff (Max)	300µA	100µA
DC Current Gain (hFE) (Min) @ Ic, Vce	15 @ 1A, 4V	20 @ 4A, 2V
Power - Max	2 W	50 W
Mounting Type	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3
Supplier Device Package	TO-220	TO-220
RoHS Status	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

The BD239F-S is designated as obsolete, requiring the use of substitute parts for continued production or repair. The substitute part MJE15030G is classified as active and is ROHS3 compliant, satisfying environmental and regulatory requirements. All substitute selections must adhere to compliance statuses as specified.

Frequently Asked Questions (FAQ)

Q1: Which key parameters must match to select a substitute for BD239F-S?
A1: Essential substitution criteria include transistor type (NPN), maximum collector current, collector-emitter breakdown voltage, Vce saturation (at defined conditions), cutoff current, DC current gain, power rating, mounting type, and package/case compatibility.

Q2: Are package and mounting types important for substitution?
A2: Yes, the replacement must use a compatible package (TO-220-3) and mounting type (Through Hole) to ensure form and fit in existing PCBs or assemblies.

Q3: Is RoHS compliance required for all substitutes?
A3: All listed substitutes are ROHS3 compliant, matching the main part’s compliance status for environmental and regulatory conformity.

Q4: Can a substitute have higher maximum ratings than the original?
A4: Yes, provided all listed electrical and mechanical parameters are met or exceeded per the substitution criteria above.

Q5: What documentation should be referenced when evaluating substitute parts?
A5: Only the explicitly provided electrical, mechanical, and compliance parameters are used for qualification in this reference.

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