PDZ3.6B-QF Zener Diode Equivalent & Substitute Parts

Part Overview

The PDZ3.6B-QF is a 3.6 V Zener diode rated for 400 mW maximum power dissipation in a surface mount SOD-323 package. Manufactured by Nexperia USA Inc., this component is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications. Substitute parts must maintain electrical performance within the specified tolerance and mechanical compatibility with the original package designation.

Substiute Parts

PDZ3.6B-QF

Nexperia USA Inc.In Stock: 696PDZ3.6B-QF Datasheet

Current PartRFQ

PDZ3.9B-QX

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

MFR RecommendedRFQ

PDZ3.6B,115

NXP SemiconductorsIn Stock: 25321PDZ3.6B,115 Datasheet

Parametric EquivalentRFQ

PDZ3.6B-QX

Nexperia USA Inc.In Stock: 851PDZ3.6B-QX Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PDZ3.6B-QF are classified based on electrical parameter equivalence and product status. The primary substitution criteria are:

Parametric Equivalents (Identical Electrical Specifications): Parts that maintain the same nominal Zener voltage (3.6 V), tolerance (±2%), maximum power rating (400 mW), impedance (90 Ohms maximum), reverse leakage current (5 µA @ 1 V), and forward voltage characteristics (1.1 V @ 100 mA). These parts are mechanically and electrically interchangeable within the same package footprint (SOD-323).

Manufacturer Recommended Substitute (Voltage Variant): The PDZ3.9B-QX represents a voltage variant substitute with a nominal Zener voltage of 3.9 V instead of 3.6 V. This part maintains identical power rating, impedance, operating temperature, and package specifications. Selection of this variant requires circuit-level voltage tolerance analysis.

Product Status Consideration: The original PDZ3.6B-QF is obsolete. Active product alternatives ensure long-term component availability and supply chain continuity.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

The PDZ3.6B-QX and PDZ3.6B,115 are parametric equivalents to the PDZ3.6B-QF. Both maintain the 3.6 V nominal Zener voltage, ±2% tolerance, 400 mW power rating, and identical impedance and leakage characteristics. The PDZ3.6B-QX is the manufacturer-recommended active product with AEC-Q101 automotive qualification and ROHS3 compliance. The PDZ3.6B,115 is supplied by NXP Semiconductors and maintains equivalent electrical specifications. Both are suitable for direct substitution in applications requiring the original 3.6 V Zener voltage specification.

For Voltage Variant Applications:

The PDZ3.9B-QX is an active product substitute with a 3.9 V nominal Zener voltage. This part maintains identical power dissipation, impedance, operating temperature, and package specifications. The PDZ3.9B-QX exhibits lower reverse leakage current (3 µA @ 1 V versus 5 µA @ 1 V). Selection of this variant is appropriate only when circuit design permits operation at the higher 3.9 V Zener voltage within the specified ±2% tolerance band.

Compliance and Availability:

All active substitute parts (PDZ3.6B-QX, PDZ3.6B,115, PDZ3.9B-QX) are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity). The PDZ3.6B-QX and PDZ3.9B-QX carry AEC-Q101 automotive qualification. Current inventory levels support production requirements across all substitute options.

Frequently Asked Questions (FAQ)

Q: Can PDZ3.6B-QX be used as a direct replacement for PDZ3.6B-QF?

A: Yes. The PDZ3.6B-QX is a parametric equivalent with identical nominal Zener voltage (3.6 V), tolerance (±2%), power rating (400 mW), impedance (90 Ohms), and package (SOD-323). Both are surface mount components with the same electrical characteristics and operating temperature range. The PDZ3.6B-QX is an active product, addressing the obsolescence of the PDZ3.6B-QF.

Q: What is the difference between PDZ3.6B-QX and PDZ3.6B,115?

A: Both parts are parametric equivalents with identical electrical specifications (3.6 V, ±2%, 400 mW, SOD-323). The primary difference is manufacturer designation: PDZ3.6B-QX is supplied by Nexperia USA Inc. with AEC-Q101 qualification, while PDZ3.6B,115 is supplied by NXP Semiconductors. Both maintain ROHS3 compliance and MSL 1 rating.

Q: When should PDZ3.9B-QX be selected instead of PDZ3.6B-QX?

A: The PDZ3.9B-QX has a nominal Zener voltage of 3.9 V compared to 3.6 V. This variant is selected only when circuit design specifications permit operation at the higher voltage within the ±2% tolerance band. Both parts maintain identical power rating, impedance, and package specifications. The PDZ3.9B-QX exhibits lower reverse leakage current (3 µA @ 1 V).

Q: Are all substitute parts automotive-grade?

A: The PDZ3.6B-QX and PDZ3.9B-QX are automotive-grade with AEC-Q101 qualification. The PDZ3.6B,115 does not specify automotive grade or AEC-Q101 qualification in the provided data. For automotive applications requiring AEC-Q101 compliance, PDZ3.6B-QX is the recommended substitute.

Q: What is the package compatibility between the main part and substitutes?

A: All parts use the SOD-323 package (SC-76 case designation). This ensures mechanical and footprint compatibility for surface mount assembly. No PCB layout modifications are required when substituting between these parts.

Q: Is there a difference in moisture sensitivity between the parts?

A: No. All parts, including the main PDZ3.6B-QF and all substitutes, have MSL 1 (Unlimited) rating. This indicates no moisture sensitivity restrictions for storage, handling, or assembly processes.

Q: Are all substitute parts ROHS3 compliant?

A: The PDZ3.6B-QX and PDZ3.9B-QX are explicitly ROHS3 compliant. The PDZ3.6B,115 does not specify ROHS status in the provided data. For applications requiring ROHS3 compliance verification, PDZ3.6B-QX is the recommended substitute.