BZT52H-A11X Equivalent & Substitute Parts

Part Overview

The BZT52H-A11X is an 11 V Zener diode manufactured by Nexperia USA Inc., rated for 375 mW maximum power dissipation with ±1% voltage tolerance. This component is housed in a surface mount SOD-123F package and is classified as Active product status. The BZT52H-A11X serves as a voltage regulation and transient protection element in electronic circuits requiring precise 11 V reference voltage maintenance.

Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining identical electrical performance and mechanical compatibility.

Substiute Parts

BZT52H-A11X

Nexperia USA Inc.In Stock: 825BZT52H-A11X Datasheet

Current PartRFQ

BZT52H-A11-QX

Nexperia USA Inc.In Stock: 3623BZT52H-A11-QX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the BZT52H-A11X are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters:

• Zener Voltage (Nominal): 11 V
• Voltage Tolerance: ±1%
• Maximum Power Dissipation: 375 mW
• Maximum Impedance: 10 Ohms
• Reverse Leakage Current: 100 nA @ 8 V
• Forward Voltage: 900 mV @ 10 mA
• Junction Temperature Rating: 150°C
• Package Type: SOD-123F
• Mounting Configuration: Surface Mount
• Environmental Compliance: ROHS3 Compliant, REACH Unaffected

Parts meeting all these parameters are classified as parametric equivalents and direct substitutes. No deviations from specified parameters are permitted for substitution classification.

Parameter Comparison

Engineering Selection Recommendations

The BZT52H-A11-QX is a direct parametric equivalent to the BZT52H-A11X. Both components are manufactured by Nexperia USA Inc. and share identical electrical specifications, mechanical packaging, and environmental compliance certifications.

The BZT52H-A11-QX carries AEC-Q101 automotive qualification and Moisture Sensitivity Level (MSL) 1 rating, indicating suitability for automotive applications and unlimited shelf life without moisture control requirements. The BZT52H-A11X does not specify automotive qualification in the provided parameters.

Both parts maintain Active product status and are ROHS3 compliant with REACH Unaffected designation. Selection between these parts depends on application requirements: the BZT52H-A11-QX is appropriate for automotive-grade applications, while the BZT52H-A11X serves general industrial and commercial applications. Electrical performance and mechanical compatibility are identical across both parts.

Frequently Asked Questions (FAQ)

Q: Can the BZT52H-A11-QX replace the BZT52H-A11X in all applications?

A: The BZT52H-A11-QX is a parametric equivalent with identical electrical specifications and SOD-123F package compatibility. Substitution is valid for applications where automotive qualification is not required. For automotive applications, the BZT52H-A11-QX is the appropriate selection due to AEC-Q101 qualification.

Q: What is the significance of the ±1% voltage tolerance?

A: The ±1% tolerance specifies the maximum deviation of the Zener voltage from the nominal 11 V rating across the specified operating range. Both the BZT52H-A11X and BZT52H-A11-QX maintain this tolerance, ensuring consistent voltage regulation performance.

Q: Are there package compatibility considerations between these parts?

A: Both parts use the SOD-123F surface mount package with identical mechanical dimensions and land pattern requirements. No PCB layout modifications are necessary when substituting between these parts.

Q: What does MSL 1 rating indicate?

A: Moisture Sensitivity Level 1 indicates unlimited shelf life without moisture control requirements. The BZT52H-A11-QX carries this rating, providing extended storage flexibility without desiccant packaging or controlled environment requirements.

Q: How do the reverse leakage current specifications affect circuit design?

A: Both parts specify 100 nA maximum reverse leakage current at 8 V. This parameter determines the maximum off-state current and affects circuit design for high-impedance applications. Identical specifications ensure equivalent circuit behavior.

Q: What is the difference between the part number suffixes -A11X and -A11-QX?

A: The suffix variation indicates different manufacturing or qualification designations within the BZT52H-A11 series. The -QX designation on the BZT52H-A11-QX indicates automotive qualification (AEC-Q101). Electrical and mechanical specifications remain identical.