2N6034 PNP Darlington Transistor Equivalent & Substitute Parts

Part Overview

The 2N6034 is a PNP Darlington bipolar junction transistor manufactured by onsemi, designed for through-hole applications in the TO-126 package. This component is rated for 40 V collector-emitter breakdown voltage and 4 A maximum collector current, with a maximum power dissipation of 40 W. The 2N6034 is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, maintenance, and production continuity. Substitute parts must maintain electrical and mechanical compatibility across all critical performance parameters.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP - Darlington	—
Current - Collector (Ic) (Max)	4	A
Voltage - Collector Emitter Breakdown (Max)	40	V
Vce Saturation (Max) @ Ib, Ic	3 V @ 40 mA, 4 A	—
Current - Collector Cutoff (Max)	100	µA
DC Current Gain (hFE) (Min) @ Ic, Vce	750 @ 2 A, 3 V	—
Power - Max	40	W
Operating Temperature	−65 to 150	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	TO-225AA, TO-126-3	—
Supplier Device Package	TO-126	—

Substitute Part Grouping Explanation

Substitute parts for the 2N6034 are identified based on strict electrical and mechanical parameter matching. The substitution criteria are:

Primary Matching Parameters:

Transistor Type: PNP - Darlington configuration
Current - Collector (Ic) (Max): 4 A
Voltage - Collector Emitter Breakdown (Max): 40 V
Vce Saturation (Max) @ Ib, Ic: 3 V @ 40 mA, 4 A
Current - Collector Cutoff (Max): 100 µA
DC Current Gain (hFE) (Min) @ Ic, Vce: 750 @ 2 A, 3 V
Power - Max: 40 W
Operating Temperature: −65°C to 150°C (TJ)
Mounting Type: Through Hole
Package / Case: TO-225AA, TO-126-3

Parts meeting all these parameters are classified as direct substitutes. The 2N6034G variant maintains identical electrical specifications and package configuration, with the primary distinction being RoHS compliance status.

Parameter Comparison

Parameter	2N6034	2N6034G
Transistor Type	PNP - Darlington	PNP - Darlington
Current - Collector (Ic) (Max)	4 A	4 A
Voltage - Collector Emitter Breakdown (Max)	40 V	40 V
Vce Saturation (Max) @ Ib, Ic	3 V @ 40 mA, 4 A	3 V @ 40 mA, 4 A
Current - Collector Cutoff (Max)	100 µA	100 µA
DC Current Gain (hFE) (Min) @ Ic, Vce	750 @ 2 A, 3 V	750 @ 2 A, 3 V
Power - Max	40 W	40 W
Operating Temperature	−65°C to 150°C (TJ)	−65°C to 150°C (TJ)
Mounting Type	Through Hole	Through Hole
Package / Case	TO-225AA, TO-126-3	TO-225AA, TO-126-3
Supplier Device Package	TO-126	TO-126
Product Status	Obsolete	Obsolete
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

2N6034G as Direct Substitute:

The 2N6034G is a direct electrical and mechanical substitute for the 2N6034. Both parts share identical electrical specifications, operating temperature range, and TO-126 package configuration. The 2N6034G provides ROHS3 compliance, whereas the original 2N6034 is RoHS non-compliant. For applications subject to RoHS regulatory requirements or environmental compliance mandates, the 2N6034G is the appropriate selection. Both parts maintain MSL Level 1 (Unlimited) moisture sensitivity classification and REACH Unaffected status.

Current inventory availability: 2N6034 (2012 pcs), 2N6034G (1994 pcs).

Frequently Asked Questions (FAQ)

Q: Can the 2N6034G replace the 2N6034 in existing designs?

A: Yes. The 2N6034G is electrically and mechanically identical to the 2N6034 across all specified parameters. Direct substitution is supported without circuit modification. The primary difference is RoHS3 compliance status of the 2N6034G.

Q: What is the significance of the "G" suffix in 2N6034G?

A: The "G" suffix indicates a RoHS3-compliant variant of the base 2N6034 part number. Electrical and mechanical specifications remain unchanged.

Q: Are there any package compatibility concerns when substituting 2N6034 with 2N6034G?

A: No. Both parts use the TO-126 package (TO-225AA, TO-126-3 case designation). Pin configuration and mechanical dimensions are identical, ensuring direct board-level compatibility.

Q: What are the critical electrical parameters that define substitution eligibility?

A: Substitutes must match the following parameters: PNP Darlington transistor type, 4 A maximum collector current, 40 V collector-emitter breakdown voltage, 3 V Vce saturation at specified conditions, 750 minimum DC current gain, and 40 W maximum power dissipation. Operating temperature range (−65°C to 150°C) and through-hole mounting type must also be maintained.

Q: Is RoHS compliance a functional requirement or a regulatory requirement?

A: RoHS compliance is a regulatory requirement dependent on application jurisdiction and customer specifications. From a functional standpoint, both 2N6034 and 2N6034G perform identically. Selection between them should be based on applicable regulatory frameworks and procurement specifications.

Q: What is the moisture sensitivity level for these parts?

A: Both 2N6034 and 2N6034G are classified as MSL Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

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