DFLZ20-TP Zener Diode 20V 1W Equivalent & Substitute Parts

Part Overview

The DFLZ20-TP is a 20 V, 1 W surface mount zener diode manufactured by Micro Commercial Co in SOD-123FL packaging. This component is classified as Active product status and is RoHS3 compliant with unlimited moisture sensitivity level (MSL 1). The DFLZ20-TP serves as a voltage regulation and transient protection element in electronic circuits. Substitute parts are identified based on matching electrical specifications, mechanical compatibility, and operational parameters within defined tolerances.

Substiute Parts

DFLZ20-TP

Micro Commercial CoIn Stock: 1053DFLZ20-TP Datasheet

Current PartRFQ

BZT52HC20WF-7

Diodes IncorporatedIn Stock: 893BZT52HC20WF-7 Datasheet

SimilarRFQ

PZ1AL20B-AU_R1_000A1

Panjit International Inc.In Stock: 3953PZ1AL20B-AU_R1_000A1 Datasheet

Parametric EquivalentRFQ

PZ1AL20B_R1_00001

Panjit International Inc.In Stock: 7038PZ1AL20B_R1_00001 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DFLZ20-TP are classified into two categories based on electrical and mechanical parameter alignment:

Parametric Equivalents match all critical electrical specifications: 20 V nominal zener voltage, 1 W maximum power dissipation, ±5% tolerance, 15 Ohms maximum impedance, 1 µA reverse leakage current at 15 V, and -55°C to 150°C operating temperature range. These parts are mechanically compatible with SOD-123F packaging and surface mount assembly processes.

Similar Substitutes share the same nominal zener voltage (20 V) and package form factor (SOD-123F) but differ in power rating, tolerance, impedance, or reverse leakage specifications. These parts require circuit-level evaluation to confirm functional compatibility.

The following parameters determine substitution eligibility:

• Voltage - Zener (Nom): 20 V (required match)
• Package / Case: SOD-123F (required match)
• Mounting Type: Surface Mount (required match)
• Power - Max: 1 W (parametric equivalents) or 375 mW (similar substitutes)
• Tolerance: ±5% (parametric equivalents) or ±6% (similar substitutes)
• Operating Temperature: -55°C to 150°C minimum range (parametric equivalents) or -65°C to 150°C (similar substitutes)

Parameter Comparison

Engineering Selection Recommendations

PZ1AL20B_R1_00001 and PZ1AL20B-AU_R1_000A1 are parametric equivalents to the DFLZ20-TP. Both parts are manufactured by Panjit International Inc. and match all critical electrical parameters: 20 V nominal zener voltage, 1 W power dissipation, ±5% tolerance, 15 Ohms impedance, and 1 µA reverse leakage current. Both are RoHS3 compliant and operate across the -55°C to 150°C temperature range. PZ1AL20B-AU_R1_000A1 carries AEC-Q101 automotive qualification. PZ1AL20B_R1_00001 does not list automotive qualification. Both parts are available in SOD-123FL packaging and are suitable for direct substitution in applications where the DFLZ20-TP is specified.

BZT52HC20WF-7 is a similar substitute manufactured by Diodes Incorporated. This part shares the 20 V nominal zener voltage and SOD-123F package form factor but differs in power rating (375 mW versus 1 W), tolerance (±6% versus ±5%), impedance (20 Ohms versus 15 Ohms), and reverse leakage current (50 nA @ 14 V versus 1 µA @ 15 V). BZT52HC20WF-7 is AEC-Q101 qualified and operates across -65°C to 150°C. This part is suitable for applications where the reduced power dissipation and lower reverse leakage are acceptable design parameters.

All substitute parts are Active product status and RoHS3 compliant, meeting regulatory requirements equivalent to the main part.

Frequently Asked Questions (FAQ)

Q: Can BZT52HC20WF-7 replace DFLZ20-TP in all applications?

A: BZT52HC20WF-7 differs in power rating (375 mW versus 1 W) and impedance (20 Ohms versus 15 Ohms). Substitution is valid only in circuits where the reduced power dissipation and higher impedance do not exceed design limits. Circuit-level analysis is required to confirm compatibility.

Q: Are PZ1AL20B_R1_00001 and PZ1AL20B-AU_R1_000A1 interchangeable?

A: Both parts are parametric equivalents with identical electrical specifications. PZ1AL20B-AU_R1_000A1 carries AEC-Q101 automotive qualification; PZ1AL20B_R1_00001 does not. Selection depends on whether automotive qualification is required for the application.

Q: Do all substitute parts use the same package?

A: All substitute parts use SOD-123F packaging and are surface mount components. They are mechanically compatible with PCB layouts designed for the DFLZ20-TP.

Q: What is the significance of the ±5% versus ±6% tolerance difference?

A: Tolerance specifies the allowable deviation from the nominal 20 V zener voltage. DFLZ20-TP and parametric equivalents maintain ±5% tolerance. BZT52HC20WF-7 has ±6% tolerance, resulting in a wider acceptable voltage range. Applications requiring tighter voltage regulation may require the ±5% tolerance specification.

Q: Are all parts RoHS3 compliant?

A: Yes. DFLZ20-TP, BZT52HC20WF-7, PZ1AL20B-AU_R1_000A1, and PZ1AL20B_R1_00001 are all RoHS3 compliant and REACH unaffected.

Q: What is the difference in reverse leakage current specifications?

A: DFLZ20-TP specifies 1 µA @ 15 V. BZT52HC20WF-7 specifies 50 nA @ 14 V, indicating lower leakage. Parametric equivalents match the 1 µA specification. Lower reverse leakage may be beneficial in high-impedance circuits but is not required for general applications.