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BZX84W-B3V3F Equivalent & Substitute Parts
Part Overview
The BZX84W-B3V3F is an active Zener diode manufactured by Nexperia USA Inc., designed for voltage regulation and protection applications. This surface mount component operates at a nominal Zener voltage of 3.3 V with a maximum power dissipation of 275 mW in the SOT-323 package. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1), making it suitable for standard manufacturing environments. Substitute parts are identified when inventory constraints, supply chain disruptions, or manufacturing requirements necessitate alternative sourcing while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Zener (Nom) | 3.3 | V |
| Tolerance | ±2% | — |
| Power - Max | 275 | mW |
| Impedance (Max) | 95 | Ohms |
| Current - Reverse Leakage @ Vr | 5 | µA @ 1 V |
| Voltage - Forward (Vf) (Max) @ If | 900 | mV @ 10 mA |
| Operating Temperature | 150 | °C (TJ) |
| Package / Case | SC-70, SOT-323 | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the BZX84W-B3V3F is determined by strict equivalence across the following critical parameters:
Electrical Parameters:
- Nominal Zener voltage: 3.3 V
- Voltage tolerance: ±2%
- Maximum power dissipation: 275 mW
- Maximum impedance: 95 Ohms
- Reverse leakage current: 5 µA @ 1 V
- Forward voltage: 900 mV @ 10 mA
- Operating temperature range: 150°C (TJ)
Mechanical & Packaging Parameters:
- Package type: SOT-323 (SC-70)
- Mounting configuration: Surface Mount
- Supplier device package: SOT-323
Compliance & Environmental Parameters:
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
- REACH Status: REACH Unaffected
Parts qualify as direct substitutes only when all electrical specifications, package dimensions, mounting type, and compliance certifications match exactly. The BZX84W series designation and base product number must remain consistent.
Parameter Comparison
| Parameter | BZX84W-B3V3F | BZX84W-B3V3X | Match |
|---|---|---|---|
| Manufacturer | Nexperia USA Inc. | Nexperia USA Inc. | ✓ |
| Category | Diodes, Zener | Diodes, Zener | ✓ |
| Voltage - Zener (Nom) | 3.3 V | 3.3 V | ✓ |
| Tolerance | ±2% | ±2% | ✓ |
| Power - Max | 275 mW | 275 mW | ✓ |
| Impedance (Max) | 95 Ohms | 95 Ohms | ✓ |
| Current - Reverse Leakage @ Vr | 5 µA @ 1 V | 5 µA @ 1 V | ✓ |
| Voltage - Forward (Vf) (Max) @ If | 900 mV @ 10 mA | 900 mV @ 10 mA | ✓ |
| Operating Temperature | 150°C (TJ) | 150°C (TJ) | ✓ |
| Package / Case | SC-70, SOT-323 | SC-70, SOT-323 | ✓ |
| Mounting Type | Surface Mount | Surface Mount | ✓ |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ✓ |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | ✓ |
| REACH Status | REACH Unaffected | REACH Unaffected | ✓ |
| Product Status | Active | Active | ✓ |
Engineering Selection Recommendations
The BZX84W-B3V3X is a direct parametric equivalent to the BZX84W-B3V3F. Both components are manufactured by Nexperia USA Inc. and maintain identical electrical specifications, package configuration, and compliance certifications. Selection between these parts is based on availability and supply chain considerations rather than technical performance differences.
Both parts carry Active product status, confirming ongoing manufacturer support and availability. ROHS3 compliance and REACH unaffected status are consistent across both variants, ensuring regulatory compatibility in applications subject to environmental restrictions.
The SOT-323 package and surface mount configuration are identical, permitting direct board-level substitution without PCB redesign or assembly process modification.
Frequently Asked Questions (FAQ)
Q: Can BZX84W-B3V3X be used as a direct replacement for BZX84W-B3V3F?
A: Yes. Both parts are parametrically identical across all electrical specifications, package type, mounting configuration, and compliance certifications. Direct substitution is supported without circuit modification.
Q: Are there differences in the SOT-323 package between these parts?
A: No. Both components use the identical SC-70 / SOT-323 package with the same mechanical dimensions and pin configuration, enabling direct PCB compatibility.
Q: What is the difference between the "F" and "X" suffixes in the part numbers?
A: The suffix designates the packaging reel configuration or manufacturing batch identifier. The electrical and mechanical specifications remain identical.
Q: Do both parts meet the same compliance requirements?
A: Yes. Both BZX84W-B3V3F and BZX84W-B3V3X are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity rating.
Q: Can these parts be used interchangeably in high-temperature applications?
A: Yes. Both parts support identical operating temperature ranges up to 150°C (TJ), maintaining full electrical performance within specified limits.
Q: Is there a performance difference in reverse leakage current between these parts?
A: No. Both parts specify identical reverse leakage current of 5 µA @ 1 V, ensuring equivalent voltage regulation stability.
Q: What is the maximum power dissipation for both parts?
A: Both parts are rated for 275 mW maximum power dissipation in the SOT-323 package.
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