PDZ3.9B-QX Zener Diode Equivalent & Substitute Parts

Part Overview

The PDZ3.9B-QX is a 3.9 V, 400 mW Zener diode manufactured by Nexperia USA Inc. in the SOD-323 surface mount package. This component is classified as an active product with AEC-Q101 automotive qualification and ROHS3 compliance. The part is supplied in Tape & Reel (TR) packaging format.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameters. The PDZ3.9B-QX has an identified parametric equivalent available in alternative packaging configurations, which may be necessary for procurement, inventory, or supply chain considerations.

Substiute Parts

PDZ3.9B-QX

Nexperia USA Inc.In Stock: 1012PDZ3.9B-QX Datasheet

Current PartRFQ

PDZ3.9B,115

Nexperia USA Inc.In Stock: 2235PDZ3.9B,115 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PDZ3.9B-QX is determined by equivalence across the following critical parameters:

Electrical Parameters (Must Match):

• Zener voltage: 3.9 V nominal
• Tolerance: ±2%
• Maximum power dissipation: 400 mW
• Maximum impedance: 90 Ohms
• Reverse leakage current: 3 µA @ 1 V
• Forward voltage: 1.1 V maximum @ 100 mA
• Operating temperature: 150°C (TJ)

Mechanical Parameters (Must Match):

• Package type: SOD-323 (SC-76)
• Mounting type: Surface Mount

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)
• REACH Status: REACH Unaffected

The identified substitute differs only in packaging format (Cut Tape & Digi-Reel® versus Tape & Reel), while maintaining identical electrical specifications and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the PDZ3.9B-QX and PDZ3.9B,115 are active products from Nexperia USA Inc. with identical electrical specifications and full compliance certifications. Selection between these parts is determined by packaging and supply requirements rather than electrical performance.

PDZ3.9B-QX is supplied in Tape & Reel (TR) format, suitable for high-volume automated assembly operations.

PDZ3.9B,115 is supplied in Cut Tape (CT) & Digi-Reel® format, suitable for lower-volume applications or component kitting scenarios.

Both parts maintain AEC-Q101 automotive qualification, ROHS3 compliance, and unlimited moisture sensitivity rating. Component selection should be based on procurement quantity, assembly equipment compatibility, and inventory management requirements.

Frequently Asked Questions (FAQ)

Q: Can PDZ3.9B,115 be used as a direct replacement for PDZ3.9B-QX in circuit applications?

A: Yes. Both parts have identical electrical specifications, including zener voltage (3.9 V), power rating (400 mW), impedance (90 Ohms maximum), and operating temperature range (150°C). Both are packaged in SOD-323 and are surface mount compatible.

Q: What is the difference between these two part numbers?

A: The primary difference is packaging format. PDZ3.9B-QX is supplied in Tape & Reel (TR) format, while PDZ3.9B,115 is supplied in Cut Tape (CT) & Digi-Reel® format. Electrical performance and compliance certifications are identical.

Q: Are both parts automotive qualified?

A: Yes. Both the PDZ3.9B-QX and PDZ3.9B,115 carry AEC-Q101 automotive qualification and are ROHS3 compliant.

Q: Does packaging format affect circuit performance?

A: No. Packaging format affects only supply chain logistics, handling, and assembly equipment compatibility. Electrical performance is identical regardless of packaging format.

Q: Can these parts be mixed in the same assembly?

A: Yes. Both parts are electrically and mechanically identical. Assembly equipment must be configured to handle the respective packaging format (Tape & Reel versus Cut Tape & Digi-Reel®).

Q: What is the moisture sensitivity level for both parts?

A: Both parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.