2N7052 Equivalent & Substitute Parts

Part Overview

The 2N7052 is an NPN Darlington bipolar junction transistor manufactured by onsemi, designed for through-hole applications in the TO-92-3 package. This device is rated for 100 V collector-emitter breakdown voltage and 1.5 A maximum collector current, with a maximum power dissipation of 625 mW. The 2N7052 is classified as obsolete, making identification of functionally equivalent active alternatives necessary for new designs and ongoing production support. Substitute parts must maintain electrical equivalence across all critical parameters while accommodating different mounting technologies and package configurations.

Substiute Parts

2N7052

onsemiIn Stock: 10682N7052 Datasheet

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NZT7053

onsemiIn Stock: 18546NZT7053 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2N7052 is determined by strict equivalence across electrical and thermal parameters. The following criteria establish valid substitutes:

Electrical Equivalence Requirements:

• Transistor type must be NPN - Darlington configuration
• Maximum collector current (Ic) must be ≥ 1.5 A
• Collector-emitter breakdown voltage (VCEO) must be ≥ 100 V
• Vce saturation characteristics must match: 1.5V @ 100µA, 100mA
• Collector cutoff current (ICBO) must be ≤ 200 nA
• DC current gain (hFE) minimum must be ≥ 1000 @ 1A, 5V
• Transition frequency must be ≥ 200 MHz
• Operating temperature range must encompass -55°C to 150°C

Thermal and Packaging Considerations:

• Maximum power dissipation must be ≥ 625 mW
• Mounting technology may differ (through-hole to surface-mount conversion acceptable)
• Package form factor may change provided electrical performance is maintained
• Moisture sensitivity level must be ≤ 1 (MSL 1)

The NZT7053 meets all electrical equivalence criteria while offering enhanced power handling (1 W vs. 625 mW) and active product status, though it requires surface-mount assembly compatibility.

Parameter Comparison

Engineering Selection Recommendations

For Obsolete Part Replacement:

The 2N7052 is classified as obsolete. The NZT7053 provides complete electrical equivalence with active product status from onsemi. Selection of NZT7053 is appropriate for applications requiring:

• Continued supply chain availability
• Active manufacturer support and documentation
• Equivalent electrical performance across all specified parameters
• Enhanced thermal performance (1 W vs. 625 mW)

Compliance and Certification:

The NZT7053 carries RoHS3 compliance certification, whereas the 2N7052 compliance status is not specified. Both devices are REACH Unaffected and classified under ECCN EAR99. For applications subject to RoHS requirements, the NZT7053 is the appropriate selection.

Packaging and Assembly Considerations:

The primary difference between 2N7052 and NZT7053 is the mounting technology. The 2N7052 uses through-hole TO-92-3 packaging, while NZT7053 uses surface-mount SOT-223-4 packaging. Circuit board redesign and assembly process modification are required for substitution. Both devices maintain identical electrical specifications and operating temperature ranges, ensuring functional compatibility at the circuit level.

Frequently Asked Questions (FAQ)

Q: Can the NZT7053 directly replace the 2N7052 in existing through-hole designs?

A: Electrical substitution is complete; however, physical package differences prevent direct board-level replacement without PCB redesign. The 2N7052 uses TO-92-3 through-hole packaging, while the NZT7053 uses SOT-223-4 surface-mount packaging. Adapter solutions or circuit board modification is required.

Q: Are the electrical characteristics identical between 2N7052 and NZT7053?

A: Yes. Both devices share identical specifications for collector current (1.5 A), breakdown voltage (100 V), saturation voltage (1.5V @ 100µA, 100mA), cutoff current (200 nA), DC current gain (1000 @ 1A, 5V), and transition frequency (200 MHz). Operating temperature range is identical (-55°C to 150°C).

Q: What is the advantage of NZT7053 over 2N7052?

A: The NZT7053 offers three primary advantages: (1) active product status with ongoing manufacturer support, (2) enhanced power dissipation capability (1 W vs. 625 mW), and (3) RoHS3 compliance certification. The 2N7052 is obsolete and subject to supply discontinuation.

Q: Does the higher power rating of NZT7053 (1 W vs. 625 mW) affect circuit design?

A: The higher power rating provides additional thermal margin and does not negatively impact circuit performance. Designs operating within the 2N7052 power envelope (625 mW) will operate safely within NZT7053 specifications. The enhanced rating allows for higher current or voltage stress without thermal degradation.

Q: Are there moisture sensitivity concerns with either device?

A: Both the 2N7052 and NZT7053 carry MSL 1 (Unlimited) classification, indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply without special moisture control requirements.

Q: What compliance certifications apply to substitution?

A: Both devices are REACH Unaffected and classified under ECCN EAR99. The NZT7053 additionally carries RoHS3 compliance. For applications subject to RoHS directives, the NZT7053 is the compliant selection.