DZ2W20000L Equivalent & Substitute Parts

Part Overview

The Panasonic DZ2W20000L is a surface mount Zener diode rated at 20 V nominal with 1 W maximum power dissipation. This component is designed for voltage regulation and protection applications in electronic circuits. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active manufacturers. Substitute parts must maintain compatibility with the SOD-123F package footprint and deliver equivalent electrical performance within specified tolerance ranges.

Substiute Parts

DZ2W20000L

Panasonic Electronic ComponentsIn Stock: 806DZ2W20000L Datasheet

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KDZVTFTR20B

Rohm SemiconductorIn Stock: 11350KDZVTFTR20B Datasheet

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KDZVTR20B

Rohm SemiconductorIn Stock: 21128KDZVTR20B Datasheet

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MMSZ20T1G

onsemiIn Stock: 2110MMSZ20T1G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DZ2W20000L is determined by the following critical parameters:

Primary Substitution Criteria:

• Zener voltage rating within ±10% of 20 V nominal
• Maximum power dissipation of 1 W or greater
• Surface mount package compatibility (SOD-123F or SOD-123)
• RoHS compliance status
• Moisture sensitivity level MSL 1

Substitute Categories:

Category 1: Direct Voltage Match (20 V) The MMSZ20T1G from onsemi maintains the exact 20 V nominal Zener voltage with ±5% tolerance, matching the DZ2W20000L specification. This part operates at 500 mW maximum power, which is lower than the original 1 W rating but suitable for applications with reduced power requirements.

Category 2: Voltage Variant Match (21.2 V) The KDZVTFTR20B and KDZVTR20B from Rohm Semiconductor both specify 21.2 V nominal Zener voltage. This represents a 6% deviation from the 20 V target. Both parts maintain 1 W maximum power dissipation and SOD-123F package compatibility. These parts are qualified to automotive standards (AEC-Q101) and carry ROHS3 compliance.

All substitute parts maintain MSL 1 rating and surface mount configuration, ensuring PCB assembly compatibility with the original design footprint.

Parameter Comparison

Engineering Selection Recommendations

For Direct Voltage Specification Compliance: The MMSZ20T1G from onsemi provides exact voltage matching at 20 V nominal with ±5% tolerance, identical to the DZ2W20000L. This part is active in production with ROHS3 compliance and unlimited moisture sensitivity rating. Selection of this part is appropriate for applications where the 20 V specification is critical. The 500 mW power rating requires circuit analysis to confirm adequacy for the intended application.

For Maximum Power Capability with Automotive Qualification: The KDZVTFTR20B and KDZVTR20B from Rohm Semiconductor both maintain 1 W power dissipation matching the original part. Both parts carry AEC-Q101 automotive qualification and ROHS3 compliance. The 21.2 V nominal voltage represents a 6% increase from the 20 V specification. These parts are suitable for applications where the higher power rating is required and the voltage tolerance band is acceptable.

Compliance Considerations: All substitute parts meet or exceed the RoHS compliance status of the original DZ2W20000L. The Rohm parts carry additional REACH Unaffected designation. All parts maintain MSL 1 rating, eliminating moisture sensitivity concerns during storage and assembly.

Frequently Asked Questions (FAQ)

Q: Can the MMSZ20T1G replace the DZ2W20000L in all applications? A: The MMSZ20T1G matches the 20 V nominal voltage and ±5% tolerance exactly. However, it is rated at 500 mW maximum power versus the original 1 W rating. Substitution is valid only if circuit power requirements do not exceed 500 mW. Circuit analysis is required to confirm power dissipation levels.

Q: What is the significance of the 21.2 V rating on the Rohm parts? A: The KDZVTFTR20B and KDZVTR20B specify 21.2 V nominal Zener voltage, which is 6% higher than the 20 V target. This voltage shift must be evaluated against circuit tolerance requirements. Applications with strict voltage regulation specifications may not accept this deviation.

Q: Are the Rohm KDZVTFTR20B and KDZVTR20B interchangeable? A: Both parts share identical electrical specifications (21.2 V, 1 W, SOD-123F package) and product status (Active, ROHS3 compliant). The primary difference is packaging format: KDZVTFTR20B is supplied in Cut Tape and Digi-Reel, while KDZVTR20B is also supplied in Cut Tape and Digi-Reel. Both are electrically and mechanically interchangeable.

Q: Does package compatibility affect substitution? A: The DZ2W20000L uses SOD-123F package. The MMSZ20T1G uses SOD-123 package. While both are surface mount packages with similar footprints, PCB layout verification is required to confirm pad compatibility. The Rohm parts use SOD-123F, matching the original package exactly.

Q: What compliance certifications apply to these substitute parts? A: The DZ2W20000L carries RoHS Compliant status. All substitute parts carry ROHS3 Compliant status, which represents a higher compliance standard. The Rohm parts additionally carry REACH Unaffected designation. All parts maintain MSL 1 (Unlimited) moisture sensitivity rating.

Q: How do reverse leakage characteristics compare? A: The DZ2W20000L specifies 10 µA @ 14 V. The Rohm parts specify 10 µA @ 15 V. The MMSZ20T1G specifies 50 nA @ 14 V, representing significantly lower leakage current. Applications sensitive to leakage current behavior should evaluate this parameter against circuit requirements.