BZT52C3V9LP-TP Equivalent & Substitute Parts

Part Overview

The BZT52C3V9LP-TP is a Zener diode rated at 3.9 V nominal with 100 mW maximum power dissipation in a surface mount SOD-882 package. Manufactured by Micro Commercial Co, this component is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying equivalent substitute parts is necessary for ongoing design support and production continuity.

Substiute Parts

BZT52C3V9LP-TP

Micro Commercial CoIn Stock: 1202BZT52C3V9LP-TP Datasheet

Current PartRFQ

BZX884-C3V9,315

Nexperia USA Inc.In Stock: 1230BZX884-C3V9,315 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZT52C3V9LP-TP is determined by the following critical electrical and mechanical parameters:

Electrical Matching Criteria:

• Zener voltage (Nom): 3.9 V
• Reverse leakage current: 3 µA @ 1 V
• Impedance (Max): 90 Ohms
• Forward voltage: 900 mV @ 10 mA
• Operating temperature range: -65°C ~ 150°C

Mechanical Compatibility:

• Surface mount technology
• SOD-882 package footprint

Compliance Requirements:

• ROHS3 compliance
• MSL 1 rating

The BZX884-C3V9,315 manufactured by Nexperia USA Inc. meets all critical electrical parameters and maintains package compatibility. This substitute is classified as active product status with automotive-grade qualification (AEC-Q100), providing enhanced availability and production support compared to the obsolete BZT52C3V9LP-TP.

Parameter Comparison

Engineering Selection Recommendations

The BZX884-C3V9,315 is a direct electrical and mechanical substitute for the BZT52C3V9LP-TP. Selection of this substitute is supported by the following factors:

Product Status: The BZX884-C3V9,315 maintains active product status, ensuring continued availability and manufacturing support. The BZT52C3V9LP-TP is obsolete, limiting future procurement options.

Electrical Equivalence: Both devices share identical nominal zener voltage (3.9 V), reverse leakage current (3 µA @ 1 V), impedance (90 Ohms maximum), and forward voltage characteristics (900 mV @ 10 mA). Operating temperature ranges are identical (-65°C ~ 150°C).

Compliance: Both parts maintain ROHS3 compliance and MSL 1 rating. The BZX884-C3V9,315 includes AEC-Q100 automotive qualification, providing additional quality assurance.

Power Dissipation: The BZX884-C3V9,315 is rated for 250 mW maximum power, exceeding the 100 mW rating of the BZT52C3V9LP-TP. This provides design margin in applications where the original part was thermally limited.

Package Compatibility: Both devices use SOD-882 surface mount packaging, maintaining PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can the BZX884-C3V9,315 directly replace the BZT52C3V9LP-TP in existing designs?

A: Yes. Both devices share identical electrical specifications for zener voltage, reverse leakage, impedance, and forward voltage. The SOD-882 package footprint is identical, enabling direct PCB substitution without layout modification.

Q: What is the significance of the higher power rating (250 mW vs. 100 mW) on the BZX884-C3V9,315?

A: The higher power rating provides additional thermal margin and allows operation in applications with higher power dissipation requirements. In applications where the original BZT52C3V9LP-TP was thermally constrained, the BZX884-C3V9,315 offers improved performance headroom.

Q: Does the ±5% tolerance of the BZX884-C3V9,315 differ significantly from the ±5.13% tolerance of the BZT52C3V9LP-TP?

A: The tolerance difference is negligible for practical circuit design. Both tolerances fall within standard zener diode specifications and do not affect functional equivalence in typical applications.

Q: What is AEC-Q100 qualification and why does it matter?

A: AEC-Q100 is an automotive-grade qualification standard. The BZX884-C3V9,315 meets this standard, indicating compliance with automotive reliability and quality requirements. This qualification is not specified for the BZT52C3V9LP-TP.

Q: Are there any package considerations when substituting these parts?

A: Both parts use the SOD-882 surface mount package. No package conversion or PCB rework is required. Tape & Reel (TR) packaging of the BZX884-C3V9,315 is standard for production environments.

Q: Why is the BZT52C3V9LP-TP classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The BZX884-C3V9,315 from Nexperia provides an active alternative with equivalent electrical performance and superior availability.