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PDZ33B-QX Equivalent & Substitute Parts
Part Overview
The PDZ33B-QX is a Zener diode manufactured by Nexperia USA Inc., classified within the Diodes, Zener category. This component is a 33 V, 400 mW surface mount device in SOD-323 packaging, designed for voltage regulation and protection applications. The part maintains Active product status and is AEC-Q101 qualified for automotive applications. Substitute parts are identified when inventory constraints, supply chain disruptions, or procurement requirements necessitate alternative sourcing while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Zener (Nominal) | 33 | V |
| Tolerance | ±2% | — |
| Power - Maximum | 400 | mW |
| Impedance (Maximum) | 40 | Ohms |
| Current - Reverse Leakage @ 25 V | 50 | nA |
| Voltage - Forward (Maximum) @ 100 mA | 1.1 | V |
| Operating Temperature (Junction) | 150 | °C |
| Package / Case | SC-76, SOD-323 | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution eligibility for the PDZ33B-QX is determined by strict equivalence across the following critical parameters:
Electrical Parameters:
- Zener voltage: 33 V nominal
- Tolerance: ±2%
- Maximum power dissipation: 400 mW
- Maximum impedance: 40 Ohms
- Reverse leakage current: 50 nA @ 25 V
- Forward voltage: 1.1 V maximum @ 100 mA
Mechanical & Environmental Parameters:
- Package type: SOD-323 (SC-76)
- Mounting configuration: Surface Mount
- Operating temperature range: 150°C junction temperature
- Moisture sensitivity: MSL 1 (Unlimited)
Compliance & Regulatory:
- RoHS3 compliance
- REACH unaffected status
- ECCN: EAR99
- HTSUS: 8541.10.0050
Parts meeting all specified parameters within these categories are classified as parametric equivalents and direct substitutes.
Parameter Comparison
| Parameter | PDZ33B-QX | PDZ33B,115 | Match |
|---|---|---|---|
| Voltage - Zener (Nominal) | 33 V | 33 V | Yes |
| Tolerance | ±2% | ±2% | Yes |
| Power - Maximum | 400 mW | 400 mW | Yes |
| Impedance (Maximum) | 40 Ohms | 40 Ohms | Yes |
| Current - Reverse Leakage @ 25 V | 50 nA | 50 nA | Yes |
| Voltage - Forward (Maximum) @ 100 mA | 1.1 V | 1.1 V | Yes |
| Operating Temperature (Junction) | 150°C | 150°C | Yes |
| Package / Case | SC-76, SOD-323 | SC-76, SOD-323 | Yes |
| Mounting Type | Surface Mount | Surface Mount | Yes |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Yes |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Yes |
| REACH Status | REACH Unaffected | REACH Unaffected | Yes |
| ECCN | EAR99 | EAR99 | Yes |
| HTSUS | 8541.10.0050 | 8541.10.0050 | Yes |
Engineering Selection Recommendations
The PDZ33B,115 is a direct parametric equivalent to the PDZ33B-QX. Both components are manufactured by Nexperia USA Inc. and share identical electrical specifications, mechanical packaging, and regulatory compliance status. Selection between these parts is based on availability and supply chain considerations rather than technical differentiation.
PDZ33B-QX is suitable for applications where the specific part number designation is required or when the automotive-grade qualification (AEC-Q101) is explicitly specified in procurement documentation.
PDZ33B,115 provides equivalent functionality with higher current inventory availability (2300 Pcs versus 797 Pcs). This part is appropriate for applications where the parametric equivalence satisfies design requirements and supply chain flexibility is prioritized.
Both parts maintain Active product status, ROHS3 compliance, and unlimited moisture sensitivity classification, ensuring compatibility with modern manufacturing and environmental standards.
Frequently Asked Questions (FAQ)
Q: Can PDZ33B,115 be used as a direct replacement for PDZ33B-QX in automotive applications?
A: Yes. Both parts are manufactured by Nexperia USA Inc. and share identical electrical parameters, mechanical packaging (SOD-323), and regulatory compliance status. The PDZ33B,115 meets all specified requirements for automotive-grade Zener diode applications.
Q: Are there differences in the package or mounting configuration between these parts?
A: No. Both the PDZ33B-QX and PDZ33B,115 utilize the same SOD-323 (SC-76) package and surface mount configuration. PCB layout and assembly processes require no modification when substituting between these parts.
Q: What are the key electrical parameters that define substitution eligibility?
A: Substitution is determined by matching the following parameters: 33 V nominal Zener voltage, ±2% tolerance, 400 mW maximum power dissipation, 40 Ohms maximum impedance, 50 nA reverse leakage current @ 25 V, and 1.1 V maximum forward voltage @ 100 mA. The PDZ33B,115 meets all these specifications.
Q: Do both parts comply with RoHS and REACH regulations?
A: Yes. Both the PDZ33B-QX and PDZ33B,115 are ROHS3 compliant and REACH unaffected. Both carry EAR99 ECCN classification and 8541.10.0050 HTSUS code.
Q: What is the moisture sensitivity level for these components?
A: Both parts are classified as MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.
Q: Are there any operational temperature differences between the two parts?
A: No. Both components are rated for a maximum junction temperature of 150°C, providing identical thermal performance characteristics.
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