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PDZ2.4BF Zener Diode Equivalent & Substitute Parts
Part Overview
The PDZ2.4BF is a surface mount zener diode manufactured by Nexperia USA Inc., rated at 2.63 V nominal zener voltage with 400 mW maximum power dissipation. This component operates in the SOD-323 package and is classified as an active product with ROHS3 compliance. Zener diodes of this specification are used in voltage regulation, overvoltage protection, and reference voltage circuits. Substitute parts are identified when equivalent electrical characteristics and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Zener (Nom) | 2.63 | V |
| Tolerance | ±2% | — |
| Power - Max | 400 | mW |
| Impedance (Max) | 1000 | Ohms |
| Current - Reverse Leakage @ Vr | 50 | µA @ 1 V |
| Voltage - Forward (Vf) (Max) @ If | 900 | mV @ 10 mA |
| Operating Temperature | 150 | °C (TJ) |
| Package / Case | SC-76, SOD-323 | — |
| Mounting Type | Surface Mount | — |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the PDZ2.4BF is determined by strict equivalence across the following critical parameters:
Zener voltage specification (2.63 V nominal) with matching tolerance (±2%) ensures voltage regulation performance remains within design specifications. Maximum power dissipation (400 mW) must be identical to maintain thermal and current handling characteristics. Impedance maximum (1000 Ohms) and reverse leakage current (50 µA @ 1 V) define the dynamic and static performance boundaries. Forward voltage characteristics (900 mV @ 10 mA) establish forward conduction behavior. Operating temperature rating (150°C junction temperature) confirms thermal capability. Package and mounting type (SOD-323, surface mount) ensure mechanical and PCB assembly compatibility. RoHS3 compliance and MSL rating (1) confirm regulatory and moisture handling requirements.
The PDZ2.4BZ is grouped as a parametric equivalent substitute because all electrical specifications, thermal ratings, package configuration, and compliance certifications are identical to the PDZ2.4BF.
Parameter Comparison
| Parameter | PDZ2.4BF | PDZ2.4BZ | Match |
|---|---|---|---|
| Voltage - Zener (Nom) | 2.63 V | 2.63 V | Yes |
| Tolerance | ±2% | ±2% | Yes |
| Power - Max | 400 mW | 400 mW | Yes |
| Impedance (Max) | 1000 Ohms | 1000 Ohms | Yes |
| Current - Reverse Leakage @ Vr | 50 µA @ 1 V | 50 µA @ 1 V | Yes |
| Voltage - Forward (Vf) (Max) @ If | 900 mV @ 10 mA | 900 mV @ 10 mA | Yes |
| Operating Temperature | 150°C (TJ) | 150°C (TJ) | 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 |
| Manufacturer | Nexperia USA Inc. | Nexperia USA Inc. | Yes |
Engineering Selection Recommendations
Both PDZ2.4BF and PDZ2.4BZ are active products manufactured by Nexperia USA Inc. with identical electrical and mechanical specifications. Selection between these parts is based on availability and supply chain requirements rather than technical differentiation. Both components maintain ROHS3 compliance and REACH unaffected status, confirming regulatory alignment for industrial and commercial applications. The MSL rating of 1 (Unlimited) indicates no moisture sensitivity restrictions during storage and handling. Either part is suitable for direct substitution in voltage regulation, overvoltage protection, and reference voltage circuit applications where the 2.63 V zener specification and 400 mW power rating are required.
Frequently Asked Questions (FAQ)
Q: Can PDZ2.4BZ replace PDZ2.4BF in existing designs?
A: Yes. The PDZ2.4BZ is a parametric equivalent with identical zener voltage (2.63 V), power rating (400 mW), impedance (1000 Ohms), forward voltage characteristics, and SOD-323 package configuration. Direct substitution is supported without circuit modification.
Q: Are there differences in thermal performance between these parts?
A: No. Both parts share the same maximum operating temperature rating of 150°C junction temperature and identical power dissipation limits of 400 mW. Thermal performance is equivalent.
Q: Do both parts meet the same compliance standards?
A: Yes. Both PDZ2.4BF and PDZ2.4BZ are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited). Regulatory and environmental compliance is identical.
Q: What is the significance of the ±2% tolerance specification?
A: The ±2% tolerance defines the acceptable variation range of the zener voltage around the 2.63 V nominal value. Both substitute parts maintain this tolerance, ensuring voltage regulation accuracy within design specifications.
Q: Are there any package or mounting differences?
A: No. Both parts use the SC-76 / SOD-323 surface mount package. PCB footprint, reflow soldering requirements, and automated assembly compatibility are identical.
Q: What is the reverse leakage current specification used for?
A: The 50 µA @ 1 V reverse leakage current specification defines the static leakage behavior when the zener diode is reverse biased below the zener voltage threshold. This parameter is identical for both parts.
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