PDZ27B-QZ Equivalent & Substitute Parts

Part Overview

The PDZ27B-QZ is a Zener diode rated at 27 V with 400 mW power dissipation in a surface mount SOD-323 package. Manufactured by Nexperia USA Inc., this component is classified as an active product with automotive-grade qualification (AEC-Q101) and full RoHS3 compliance. The part is designed for voltage regulation and protection applications requiring precise 27 V reference characteristics. Substitute parts are identified when inventory constraints, supply chain disruptions, or procurement requirements necessitate alternative sourcing while maintaining equivalent electrical and mechanical performance.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nominal)	27	V
Tolerance	±2	%
Power - Maximum	400	mW
Impedance (Maximum)	40	Ohms
Current - Reverse Leakage @ 21 V	50	nA
Voltage - Forward (Maximum) @ 100 mA	1.1	V
Operating Temperature (Junction)	150	°C
Package / Case	SC-76, SOD-323	—
Mounting Type	Surface Mount	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitution of the PDZ27B-QZ is determined by equivalence across the following critical parameters:

Zener Voltage (Vz): 27 V nominal with ±2% tolerance
Power Dissipation: 400 mW maximum rating
Package Type: SOD-323 surface mount configuration
Impedance (Zzt): 40 Ohms maximum
Reverse Leakage Current: 50 nA @ 21 V
Forward Voltage: 1.1 V maximum @ 100 mA
Junction Temperature Rating: 150°C
Compliance Standards: RoHS3, REACH Unaffected, AEC-Q101 automotive qualification

The substitute part PDZ27B,115 maintains identical electrical specifications and mechanical compatibility with the primary part number PDZ27B-QZ. Both components are manufactured by Nexperia USA Inc. and share the same functional classification within the PDZ series Zener diode family.

Parameter Comparison

Parameter	PDZ27B-QZ	PDZ27B,115	Match
Manufacturer	Nexperia USA Inc.	Nexperia USA Inc.	Yes
Category	Diodes, Zener	Diodes, Zener	Yes
Voltage - Zener (Nom)	27 V	27 V	Yes
Tolerance	±2%	±2%	Yes
Power - Max	400 mW	400 mW	Yes
Impedance (Max)	40 Ohms	40 Ohms	Yes
Current - Reverse Leakage @ Vr	50 nA @ 21 V	50 nA @ 21 V	Yes
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 100 mA	1.1 V @ 100 mA	Yes
Operating Temperature	150°C (TJ)	150°C (TJ)	Yes
Mounting Type	Surface Mount	Surface Mount	Yes
Package / Case	SC-76, SOD-323	SC-76, SOD-323	Yes
Supplier Device Package	SOD-323	SOD-323	Yes
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Yes
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Yes
REACH Status	REACH Unaffected	REACH Unaffected	Yes
Product Status	Active	Active	Yes

Engineering Selection Recommendations

Both PDZ27B-QZ and PDZ27B,115 are active products manufactured by Nexperia USA Inc. with full compliance to automotive standards (AEC-Q101) and environmental regulations (RoHS3, REACH Unaffected). Selection between these parts is based on availability and procurement logistics rather than electrical or mechanical differentiation.

The PDZ27B-QZ is the primary part number with 903 units in stock. The PDZ27B,115 is the parametric equivalent with 1211 units in stock and serves as a direct substitute when primary inventory is depleted or when supply chain optimization requires alternative sourcing from the same manufacturer.

Both components are suitable for applications requiring 27 V Zener regulation with 400 mW power handling in surface mount configurations. The identical electrical specifications, package type, and compliance certifications ensure interchangeability in circuit design and manufacturing processes.

Frequently Asked Questions (FAQ)

Q: Are PDZ27B-QZ and PDZ27B,115 electrically interchangeable?

A: Yes. Both parts share identical Zener voltage (27 V ±2%), power rating (400 mW), impedance (40 Ohms maximum), reverse leakage current (50 nA @ 21 V), and forward voltage characteristics (1.1 V @ 100 mA). They are parametric equivalents.

Q: Can these parts be used interchangeably in PCB assembly?

A: Yes. Both components use the SOD-323 surface mount package with identical mechanical dimensions and land pattern requirements. No PCB layout modifications are required when substituting between these part numbers.

Q: Do both parts meet automotive qualification requirements?

A: The PDZ27B-QZ carries AEC-Q101 automotive qualification. The PDZ27B,115 does not list a specific grade designation in the provided data. Verification of automotive qualification status for PDZ27B,115 should be confirmed through the manufacturer's datasheet if automotive compliance is a circuit requirement.

Q: What is the difference between PDZ27B-QZ and PDZ27B,115?

A: The primary difference is the packaging designation. PDZ27B-QZ is supplied in Tape & Reel format with automotive-grade classification. PDZ27B,115 is also supplied in Tape & Reel format. Both are manufactured by Nexperia USA Inc. and maintain identical electrical performance specifications.

Q: Are there any moisture sensitivity or storage considerations?

A: Both parts have Moisture Sensitivity Level (MSL) rating of 1 (Unlimited), indicating no special moisture control requirements during storage or handling.

Q: What compliance standards apply to both parts?

A: Both PDZ27B-QZ and PDZ27B,115 are RoHS3 compliant and REACH unaffected. Both carry ECCN classification EAR99 and HTSUS code 8541.10.0050.

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