PDZ4.7B-QX Equivalent & Substitute Parts

Part Overview

The PDZ4.7B-QX is an active Zener diode manufactured by Nexperia USA Inc., classified as a surface mount component in the SOD-323 package. This 4.7 V, 400 mW Zener diode is designed for voltage regulation and protection applications in electronic circuits. The part carries AEC-Q101 automotive qualification and maintains ROHS3 compliance. Substitute parts are identified when electrical parameters, mechanical packaging, and compliance certifications align with the original specification, enabling direct replacement in production and field applications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	4.7	V
Tolerance	±2%	—
Power - Max	400	mW
Impedance (Max)	90	Ohms
Current - Reverse Leakage @ Vr	2	µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.1	V @ 100 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

Substitute parts for the PDZ4.7B-QX are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters:

Zener voltage: 4.7 V nominal
Tolerance: ±2%
Maximum power dissipation: 400 mW
Maximum impedance: 90 Ohms
Reverse leakage current: 2 µA @ 1 V
Forward voltage: 1.1 V maximum @ 100 mA
Operating temperature: 150°C (TJ)

Mechanical Parameters:

Package type: SOD-323 (SC-76)
Mounting: Surface Mount
Packaging format: Tape & Reel (TR)

Compliance Parameters:

RoHS3 compliance
Moisture Sensitivity Level: 1 (Unlimited)
REACH Unaffected status
ECCN: EAR99
HTSUS: 8541.10.0050

All substitute parts listed maintain identical electrical specifications and mechanical compatibility with the main part number PDZ4.7B-QX.

Parameter Comparison

Parameter	PDZ4.7B-QX	PDZ4.7B,115	PDZ4.7B,135
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Nexperia USA Inc.
Category	Diodes, Zener	Diodes, Zener	Diodes, Zener
Voltage - Zener (Nom)	4.7 V	4.7 V	4.7 V
Tolerance	±2%	±2%	±2%
Power - Max	400 mW	400 mW	400 mW
Impedance (Max)	90 Ohms	90 Ohms	90 Ohms
Current - Reverse Leakage @ Vr	2 µA @ 1 V	2 µA @ 1 V	2 µA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 100 mA	1.1 V @ 100 mA	1.1 V @ 100 mA
Operating Temperature	150°C (TJ)	150°C (TJ)	150°C (TJ)
Package / Case	SC-76, SOD-323	SC-76, SOD-323	SC-76, SOD-323
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99
HTSUS	8541.10.0050	8541.10.0050	8541.10.0050

Engineering Selection Recommendations

All listed substitute parts—PDZ4.7B,115 and PDZ4.7B,135—are active products manufactured by Nexperia USA Inc. with identical electrical and mechanical specifications to the PDZ4.7B-QX. Each substitute maintains full compliance with ROHS3 requirements, REACH regulations, and export classification standards (ECCN: EAR99). The parts are functionally interchangeable in applications requiring a 4.7 V, 400 mW Zener diode in SOD-323 surface mount packaging.

Selection between the main part and substitutes is based on inventory availability and supply chain considerations. The PDZ4.7B,115 variant maintains the highest inventory level at 69,400 pieces. The PDZ4.7B,135 variant provides an alternative with 9,246 pieces in stock. The original PDZ4.7B-QX maintains 915 pieces in inventory and carries AEC-Q101 automotive qualification, which may be required for specific automotive applications.

Frequently Asked Questions (FAQ)

Q: Can PDZ4.7B,115 and PDZ4.7B,135 be used interchangeably with PDZ4.7B-QX?

A: Yes. All three part numbers share identical electrical parameters (4.7 V nominal Zener voltage, ±2% tolerance, 400 mW maximum power), mechanical packaging (SOD-323), and compliance certifications (ROHS3, REACH Unaffected). Direct substitution is supported at the component level.

Q: What is the difference between the three part numbers?

A: The electrical and mechanical specifications are identical. The differences are limited to internal manufacturing codes and inventory tracking. All parts are manufactured by Nexperia USA Inc. and meet the same performance criteria.

Q: Are these parts suitable for automotive applications?

A: The PDZ4.7B-QX carries AEC-Q101 automotive qualification. The substitute parts PDZ4.7B,115 and PDZ4.7B,135 do not list AEC-Q101 qualification in their specifications. For applications requiring automotive-grade certification, the PDZ4.7B-QX is the specified choice.

Q: What is the SOD-323 package?

A: SOD-323 (also designated SC-76) is a surface mount semiconductor package with two leads. This package is standard for small-signal diodes and Zener diodes in compact applications.

Q: Are moisture sensitivity considerations important for storage?

A: All three parts carry Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard component storage practices apply without special moisture control requirements.

Q: What compliance certifications apply to these parts?

A: All parts are ROHS3 compliant, REACH Unaffected, and classified under ECCN EAR99 for export purposes. The HTSUS code is 8541.10.0050 for tariff classification.

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