BZT52C3V9LP-7 Equivalent & Substitute Parts

Part Overview

The BZT52C3V9LP-7 is an active-status zener diode manufactured by Diodes Incorporated, rated at 3.9 V nominal zener voltage with 250 mW maximum power dissipation. This surface-mount component is packaged in a 0402 (1006 Metric) DFN1006-2 configuration and is ROHS3 compliant with unlimited moisture sensitivity rating. The part is suitable for voltage regulation and protection applications requiring precise zener characteristics in compact form factors. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications where the primary part number becomes unavailable or where alternative qualified sources are required.

Substiute Parts

BZT52C3V9LP-7

Diodes IncorporatedIn Stock: 23159BZT52C3V9LP-7 Datasheet

Current PartRFQ

PZU3.9BL,315

Nexperia USA Inc.In Stock: 10659PZU3.9BL,315 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZT52C3V9LP-7 is determined by electrical and mechanical parameter equivalence. The critical parameters governing substitution are:

Electrical Parameters:

• Nominal zener voltage: 3.9 V
• Voltage tolerance: ±5%
• Maximum power dissipation: 250 mW
• Maximum impedance: 90 Ohms
• Reverse leakage current: 3 µA @ 1 V

Mechanical Parameters:

• Package type: DFN1006-2 (0402 Metric)
• Mounting type: Surface Mount
• Moisture sensitivity: Level 1 (Unlimited)

Compliance Parameters:

• RoHS3 compliance
• REACH unaffected status

The substitute part PZU3.9BL,315 from Nexperia USA Inc. meets all critical electrical specifications and maintains identical package configuration and compliance requirements. Substitution is valid where these parameters are matched across both components.

Parameter Comparison

Engineering Selection Recommendations

Both the BZT52C3V9LP-7 and PZU3.9BL,315 are active-status components with ROHS3 compliance and REACH unaffected designation, suitable for current procurement and long-term supply chain planning.

BZT52C3V9LP-7 (Diodes Incorporated):

• Primary part with extended lower operating temperature limit (-65°C minimum)
• Suitable for applications requiring full military or extended temperature range operation
• Current inventory: 23,100 pieces

PZU3.9BL,315 (Nexperia USA Inc.):

• Automotive-grade component with AEC-Q100 qualification
• Operating temperature range: -55°C ~ 150°C
• Suitable for automotive and industrial applications requiring automotive-level reliability
• Current inventory: 10,597 pieces

Selection between these parts is determined by application temperature requirements and industry qualification needs. The BZT52C3V9LP-7 is required for applications operating below -55°C. The PZU3.9BL,315 is appropriate for automotive applications requiring AEC-Q100 qualification. Both parts are electrically and mechanically equivalent for applications within the -55°C ~ 150°C operating range.

Frequently Asked Questions (FAQ)

Q: Can PZU3.9BL,315 replace BZT52C3V9LP-7 in all applications?

A: PZU3.9BL,315 is a direct electrical and mechanical substitute for applications operating within the -55°C ~ 150°C temperature range. Applications requiring operation below -55°C must use BZT52C3V9LP-7, which supports -65°C minimum temperature.

Q: Are the package dimensions identical between these parts?

A: Both parts use the DFN1006-2 package configuration (0402 Metric). Mechanical compatibility is confirmed for PCB layout and assembly processes.

Q: What is the significance of AEC-Q100 qualification on the PZU3.9BL,315?

A: AEC-Q100 qualification indicates the PZU3.9BL,315 meets automotive industry reliability and quality standards. This certification is required for automotive applications but is not necessary for general industrial or consumer applications.

Q: Are both parts RoHS compliant?

A: Both BZT52C3V9LP-7 and PZU3.9BL,315 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic components.

Q: What is the difference in forward voltage specifications between these parts?

A: The BZT52C3V9LP-7 specifies 900 mV @ 10 mA forward voltage, while PZU3.9BL,315 specifies 1.1 V @ 100 mA. These measurements are taken at different current levels and do not affect substitution validity for zener diode applications where reverse-bias operation is primary.

Q: Can these parts be used interchangeably in existing designs?

A: Yes, for applications within the -55°C ~ 150°C operating range. PCB layouts, footprints, and assembly processes are compatible. Design verification is required only if the application operates below -55°C or requires specific automotive qualification.