BZX84J-C68,115 Equivalent & Substitute Parts

Part Overview

The BZX84J-C68,115 is an automotive-grade Zener diode manufactured by Nexperia USA Inc., rated for 68 V nominal Zener voltage with 550 mW maximum power dissipation. The device is packaged in SOD-323F surface mount configuration and qualifies to AEC-Q101 automotive standards. This part is currently in active production status with 3204 units in stock. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity for applications requiring 68 V Zener regulation in surface mount form factor.

Substiute Parts

BZX84J-C68,115

Nexperia USA Inc.In Stock: 3272BZX84J-C68,115 Datasheet

Current PartRFQ

BZX84J-B68,115

Nexperia USA Inc.In Stock: 4097BZX84J-B68,115 Datasheet

Parametric EquivalentRFQ

MM3Z68VB

onsemiIn Stock: 5333MM3Z68VB Datasheet

SimilarRFQ

MM3Z68VC

Fairchild SemiconductorIn Stock: 32796MM3Z68VC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of Zener diodes is determined by matching the following critical parameters: nominal Zener voltage, maximum power dissipation rating, package type, and mounting configuration. All identified substitute parts maintain the 68 V nominal Zener voltage and SOD-323F surface mount package required for direct replacement in the same PCB footprint.

Substitutes are grouped into two categories based on power rating compatibility:

Parametric Equivalent (Full Rating Match): BZX84J-B68,115 maintains identical 550 mW power rating, 68 V Zener voltage, and SOD-323F package. This part differs only in tolerance specification (±2% versus ±5%), representing a tighter voltage tolerance variant from the same manufacturer.

Similar Rating (Reduced Power): MM3Z68VB (onsemi) and MM3Z68VC (Fairchild Semiconductor) provide 68 V Zener voltage in SOD-323F package but with reduced maximum power dissipation of 200 mW. These parts are suitable for applications where the full 550 mW rating is not required.

All substitute parts operate across the identical temperature range (-65°C to 150°C) and maintain surface mount SOD-323F packaging for direct PCB compatibility.

Parameter Comparison

Engineering Selection Recommendations

BZX84J-B68,115 (Nexperia USA Inc.): This part is the primary parametric equivalent, maintaining full 550 mW power rating and identical electrical characteristics to the BZX84J-C68,115. The tighter ±2% tolerance specification provides improved voltage regulation accuracy. Both parts carry AEC-Q101 automotive qualification and ROHS3 compliance. Selection of this substitute is appropriate for applications requiring the full 550 mW power dissipation capability with enhanced voltage tolerance performance.

MM3Z68VB (onsemi): This part provides 68 V Zener voltage in SOD-323F package with ±2% tolerance and 200 mW maximum power rating. The reduced power rating limits application to circuits where dissipation does not exceed 200 mW. This part maintains ROHS3 compliance and operates across the full -65°C to 150°C temperature range. Selection is appropriate for lower-power regulation circuits where the 550 mW rating of the primary part exceeds design requirements.

MM3Z68VC (Fairchild Semiconductor): This part provides 68 V Zener voltage in SOD-323F package with ±5% tolerance matching the primary part and 200 mW maximum power rating. The reduced power rating limits application to circuits where dissipation does not exceed 200 mW. This part maintains ROHS3 compliance and operates across the full -65°C to 150°C temperature range. Selection is appropriate for lower-power regulation circuits where the 550 mW rating of the primary part exceeds design requirements and tolerance matching is preferred.

Frequently Asked Questions (FAQ)

Q: Can BZX84J-B68,115 be used as a direct replacement for BZX84J-C68,115?

A: Yes. Both parts share identical 68 V Zener voltage, 550 mW power rating, SOD-323F package, and operating temperature range. The BZX84J-B68,115 features tighter ±2% tolerance versus ±5% on the primary part. Both are manufactured by Nexperia USA Inc. and carry AEC-Q101 automotive qualification.

Q: What is the key difference between the 550 mW and 200 mW variants?

A: Maximum power dissipation rating differs. The BZX84J-C68,115 and BZX84J-B68,115 are rated for 550 mW continuous dissipation, while MM3Z68VB and MM3Z68VC are rated for 200 mW. Selection depends on circuit power requirements. Using a 200 mW part in an application requiring 550 mW dissipation will result in device failure.

Q: Are all substitute parts in SOD-323F package?

A: Yes. All identified substitute parts use SOD-323F surface mount package, enabling direct PCB footprint compatibility with the BZX84J-C68,115.

Q: Do the substitute parts meet automotive qualification requirements?

A: BZX84J-B68,115 carries AEC-Q101 automotive qualification matching the primary part. MM3Z68VB and MM3Z68VC do not list AEC-Q101 qualification in the provided specifications. Automotive applications requiring AEC-Q101 certification should use BZX84J-B68,115.

Q: What is the impedance difference between 550 mW and 200 mW parts?

A: The 550 mW variants (BZX84J-C68,115 and BZX84J-B68,115) specify 160 Ohms maximum impedance. The 200 mW variants (MM3Z68VB and MM3Z68VC) specify 226 Ohms maximum impedance. Higher impedance affects voltage regulation performance under load changes.

Q: Can tolerance differences affect circuit performance?

A: Yes. The BZX84J-C68,115 and MM3Z68VC specify ±5% tolerance, while BZX84J-B68,115 and MM3Z68VB specify ±2% tolerance. Tighter tolerance provides more precise voltage regulation. Applications with strict voltage regulation requirements should specify ±2% tolerance variants.

Q: Are all parts RoHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 compliance status.