BZX84J-B8V2,115 Equivalent & Substitute Parts

Part Overview

The BZX84J-B8V2,115 is an 8.2 V Zener diode manufactured by Nexperia USA Inc., designed for surface mount applications in the SOD-323F package. This component is classified as an active product with automotive-grade qualification (AEC-Q101) and is ROHS3 compliant. The device delivers 550 mW maximum power dissipation with ±2% voltage tolerance, making it suitable for precision voltage regulation and protection circuits. Substitute parts are identified when equivalent electrical performance can be maintained within the specified parameter ranges while accommodating different power ratings, tolerance specifications, or package variants that meet application requirements.

Substiute Parts

BZX84J-B8V2,115

Nexperia USA Inc.In Stock: 1203BZX84J-B8V2,115 Datasheet

Current PartRFQ

BZT52C8V2S-TP

Micro Commercial CoIn Stock: 2182BZT52C8V2S-TP Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BZX84J-B8V2,115 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Zener voltage (Vz) must equal 8.2 V nominal
• Operating temperature range must encompass -65°C to 150°C
• Surface mount package compatibility (SOD-323 or SOD-323F)
• RoHS3 compliance and REACH unaffected status
• Active product status

Secondary Compatibility Factors:

• Power rating may be lower if application requirements permit
• Voltage tolerance may be relaxed (±6% acceptable where ±2% is not mandated)
• Impedance and forward voltage characteristics must remain within acceptable operating margins
• Reverse leakage current specifications must not exceed application limits

The BZT52C8V2S-TP qualifies as a substitute part based on matching nominal Zener voltage, operating temperature range, surface mount configuration, and compliance certifications. The reduced power rating (200 mW versus 550 mW) and relaxed tolerance (±6% versus ±2%) represent trade-offs that are acceptable in applications where lower power dissipation is sufficient and tighter voltage regulation is not required.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (BZX84J-B8V2,115): Select the BZX84J-B8V2,115 for applications requiring automotive-grade qualification (AEC-Q101), tighter voltage tolerance (±2%), and higher power dissipation capability (550 mW). This part is appropriate for precision voltage regulation circuits and high-current protection applications. Active product status and full compliance certifications support long-term availability and supply chain reliability.

Substitute Selection (BZT52C8V2S-TP): The BZT52C8V2S-TP is suitable as a substitute when application power requirements do not exceed 200 mW and relaxed voltage tolerance (±6%) is acceptable. This part maintains identical nominal Zener voltage, operating temperature range, and compliance status. The higher impedance (15 Ohms versus 10 Ohms) and reduced forward voltage specification require circuit-level verification to confirm compatibility with existing designs. Active product status ensures continued availability.

Compliance Considerations: Both parts maintain ROHS3 compliance and REACH unaffected status, supporting regulatory requirements for commercial and automotive applications. The automotive-grade designation of the primary part provides additional qualification assurance for safety-critical applications.

Frequently Asked Questions (FAQ)

Q: Can the BZT52C8V2S-TP directly replace the BZX84J-B8V2,115 in all applications?

A: Direct replacement is possible only when application power dissipation requirements do not exceed 200 mW and voltage tolerance of ±6% is acceptable. The higher impedance (15 Ohms) may affect circuit performance in precision regulation applications. Circuit validation is necessary to confirm compatibility with specific design parameters.

Q: What is the significance of the ±2% versus ±6% tolerance difference?

A: The BZX84J-B8V2,115 maintains tighter voltage regulation (±2%) suitable for precision applications requiring stable reference voltages. The BZT52C8V2S-TP tolerance of ±6% is acceptable for general-purpose protection and regulation where wider voltage variation is tolerable. Application requirements determine which tolerance specification is appropriate.

Q: Are the SOD-323F and SOD-323 packages mechanically compatible?

A: Both packages are surface mount configurations with similar footprints suitable for automated assembly. The SOD-323F and SOD-323 designations indicate minor package variations. PCB layout compatibility should be verified with component datasheets to confirm pad dimensions and placement requirements.

Q: Does the reduced power rating of the BZT52C8V2S-TP affect thermal management?

A: The 200 mW power rating of the BZT52C8V2S-TP requires lower thermal dissipation compared to the 550 mW BZX84J-B8V2,115. Applications with continuous high-current operation must verify that the substitute part power rating is sufficient. Thermal analysis based on actual circuit current and voltage conditions determines suitability.

Q: Are both parts suitable for automotive applications?

A: The BZX84J-B8V2,115 carries automotive-grade qualification (AEC-Q101), providing formal qualification for automotive use. The BZT52C8V2S-TP is ROHS3 compliant and REACH unaffected but does not carry explicit automotive qualification. Application requirements and qualification standards determine whether automotive-grade certification is mandatory.

Q: What is the impact of the 5 Ohm impedance difference between these parts?

A: The BZX84J-B8V2,115 impedance of 10 Ohms provides lower dynamic resistance compared to the BZT52C8V2S-TP at 15 Ohms. This difference affects voltage regulation stability and transient response. Circuits sensitive to impedance variations require detailed analysis to confirm the substitute part maintains acceptable performance.