PDZ4.7B-QF Equivalent & Substitute Parts

Part Overview

The PDZ4.7B-QF is a Zener diode manufactured by Nexperia USA Inc., rated at 4.7 V nominal with 400 mW maximum power dissipation in a surface mount SOD-323 package. This component is classified as Obsolete, indicating discontinuation from active production. The PDZ4.7B-QF meets automotive-grade specifications with AEC-Q101 qualification and ROHS3 compliance. Due to its obsolete status, equivalent and substitute parts from the active product portfolio are necessary for ongoing design support and procurement continuity.

Substiute Parts

PDZ4.7B-QF

Nexperia USA Inc.In Stock: 983PDZ4.7B-QF Datasheet

Current PartRFQ

PDZ3.9B-QX

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

MFR RecommendedRFQ

PDZ4.7B,115

Nexperia USA Inc.In Stock: 69486PDZ4.7B,115 Datasheet

Parametric EquivalentRFQ

PDZ4.7B,135

Nexperia USA Inc.In Stock: 9316PDZ4.7B,135 Datasheet

Parametric EquivalentRFQ

PDZ4.7B-QX

Nexperia USA Inc.In Stock: 952PDZ4.7B-QX Datasheet

Parametric EquivalentRFQ

PDZ4.7B-QZ

Nexperia USA Inc.In Stock: 726PDZ4.7B-QZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete PDZ4.7B-QF is determined by strict electrical and mechanical parameter matching within the Zener diode category. The following criteria establish valid substitution:

Primary Substitution Criteria:

• Voltage - Zener (Nom): 4.7 V (exact match required)
• Power - Max: 400 mW (exact match required)
• Impedance (Max): 90 Ohms (exact match required)
• Tolerance: ±2% (exact match required)
• Package / Case: SC-76, SOD-323 (exact match required)
• Mounting Type: Surface Mount (exact match required)

Secondary Compatibility Factors:

• Current - Reverse Leakage @ Vr: 2 µA @ 1 V (exact match required)
• Voltage - Forward (Vf) (Max) @ If: 1.1 V @ 100 mA (exact match required)
• Operating Temperature: 150°C (TJ) (exact match required)
• RoHS Status: ROHS3 Compliant (required for environmental compliance)
• Automotive Grade and AEC-Q101 Qualification (required for automotive applications)

Substitute parts are grouped into two categories: Parametric Equivalents (identical electrical specifications with active product status) and MFR Recommended alternatives (different voltage rating but same package and power rating).

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalents (Recommended Primary Substitutes):

The following parts are direct parametric equivalents to the PDZ4.7B-QF with identical electrical specifications and active product status:

• PDZ4.7B-QX: Active product with automotive grade and AEC-Q101 qualification. Supplied in Tape & Reel packaging. Inventory: 915 Pcs.
• PDZ4.7B-QZ: Active product with automotive grade and AEC-Q101 qualification. Inventory: 694 Pcs.
• PDZ4.7B,115: Active product with identical electrical parameters. Supplied in Tape & Reel packaging. Inventory: 69,400 Pcs.
• PDZ4.7B,135: Active product with identical electrical parameters. Supplied in Tape & Reel packaging. Inventory: 9,246 Pcs.

All four parametric equivalents maintain the 4.7 V nominal Zener voltage, 400 mW power rating, SOD-323 package, and ROHS3 compliance. PDZ4.7B-QX and PDZ4.7B-QZ retain automotive-grade designation and AEC-Q101 qualification, matching the original part's compliance profile.

Alternative Voltage Rating:

• PDZ3.9B-QX: Manufacturer-recommended alternative with 3.9 V nominal Zener voltage. Maintains 400 mW power rating, SOD-323 package, automotive grade, and AEC-Q101 qualification. This part is suitable only for applications where a 3.9 V Zener voltage is functionally acceptable. Current - Reverse Leakage is 3 µA @ 1 V (versus 2 µA for the main part).

Selection Guidance:

For direct replacement of the obsolete PDZ4.7B-QF, select from the parametric equivalents PDZ4.7B-QX, PDZ4.7B-QZ, PDZ4.7B,115, or PDZ4.7B,135. All maintain identical electrical performance and compliance certifications. PDZ4.7B,115 offers the highest inventory availability. PDZ3.9B-QX is suitable only for applications requiring a 3.9 V Zener voltage and should not be used as a direct substitute for 4.7 V applications.

Frequently Asked Questions (FAQ)

Q: Can PDZ4.7B,115 or PDZ4.7B,135 be used as direct replacements for the obsolete PDZ4.7B-QF?

A: Yes. Both parts are parametric equivalents with identical Zener voltage (4.7 V), power rating (400 mW), impedance (90 Ohms), tolerance (±2%), and SOD-323 package. Both are ROHS3 compliant and active products. The primary difference is packaging designation and inventory availability.

Q: What is the difference between PDZ4.7B-QX and PDZ4.7B-QZ?

A: Both parts are parametric equivalents with identical electrical specifications and automotive-grade AEC-Q101 qualification. The difference lies in packaging designation and inventory levels. PDZ4.7B-QX has 915 Pcs in stock, while PDZ4.7B-QZ has 694 Pcs. Selection between these two is based on procurement availability and packaging requirements.

Q: Why is PDZ3.9B-QX listed as a substitute if it has a different Zener voltage?

A: PDZ3.9B-QX is listed as a manufacturer-recommended alternative, not a direct parametric equivalent. It is suitable only for applications where a 3.9 V Zener voltage is functionally acceptable. The 0.8 V difference in Zener voltage makes this part unsuitable for circuits designed specifically for 4.7 V regulation. This part should be selected only when circuit design permits the lower voltage rating.

Q: Are all substitute parts automotive-grade with AEC-Q101 qualification?

A: PDZ4.7B-QX, PDZ4.7B-QZ, and PDZ3.9B-QX retain automotive-grade designation and AEC-Q101 qualification. PDZ4.7B,115 and PDZ4.7B,135 do not list automotive grade or AEC-Q101 qualification in their specifications. For automotive applications requiring AEC-Q101 compliance, select PDZ4.7B-QX or PDZ4.7B-QZ.

Q: What is the moisture sensitivity level for all substitute parts?

A: All substitute parts have Moisture Sensitivity Level (MSL) 1 (Unlimited), matching the original PDZ4.7B-QF. This indicates no moisture sensitivity restrictions during storage and handling.

Q: Are all parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the environmental compliance of the original PDZ4.7B-QF.

Q: What is the difference in reverse leakage current between PDZ4.7B-QF and PDZ3.9B-QX?

A: The PDZ4.7B-QF has a reverse leakage current of 2 µA @ 1 V, while PDZ3.9B-QX has 3 µA @ 1 V. This 1 µA difference is within typical manufacturing variation for Zener diodes and does not affect functional compatibility in most applications. All other parametric equivalents maintain the 2 µA specification.

Q: Can I use PDZ4.7B,115 in place of PDZ4.7B-QX in an automotive application?

A: PDZ4.7B,115 is a parametric equivalent with identical electrical specifications and SOD-323 package. However, it does not list automotive-grade designation or AEC-Q101 qualification. For automotive applications requiring these certifications, use PDZ4.7B-QX or PDZ4.7B-QZ instead.

Q: What packaging format is supplied for each substitute part?

A: PDZ4.7B-QX, PDZ4.7B-QZ, PDZ4.7B,115, PDZ4.7B,135, and PDZ3.9B-QX are all supplied in Tape & Reel (TR) format. The original PDZ4.7B-QF packaging designation is not specified in the provided data.