Equivalent & Substitute Parts for DZ2J05100L

Part Overview

The DZ2J05100L is a 5.1 V, 200 mW Zener diode manufactured by Panasonic Electronic Components in the SC-90/SOD-323F surface mount package. This component is designed for voltage regulation and protection applications requiring precise 5.1 V reference voltage with ±5% tolerance. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain electrical compatibility across voltage regulation, power dissipation, and package specifications while meeting current manufacturing and compliance standards.

Key Parameters

Parameter	Value	Unit	Significance for Substitution
Voltage - Zener (Nom)	5.1	V	Primary electrical specification; must match or fall within acceptable tolerance band
Power - Max	200	mW	Thermal rating; substitute must support equivalent or greater power dissipation
Tolerance	±5%	%	Voltage accuracy specification; tighter tolerance acceptable
Package / Case	SC-90, SOD-323F	-	Physical and electrical footprint; must be identical for direct substitution
Mounting Type	Surface Mount	-	Assembly compatibility; must remain surface mount
Impedance (Max)	60	Ohms	Dynamic impedance characteristic; affects circuit performance
Current - Reverse Leakage @ Vr	1	µA @ 2 V	Leakage specification; lower values indicate better performance

Substitute Part Grouping Explanation

Substitution eligibility for the DZ2J05100L is determined by the following criteria:

Mandatory Matching Parameters:

Voltage - Zener (Nom): 5.1 V nominal (±5% tolerance band: 4.845 V to 5.355 V)
Power - Max: 200 mW minimum
Package / Case: SC-90, SOD-323F
Mounting Type: Surface Mount

Acceptable Variation Parameters:

Tolerance: Substitute tolerance of ±2% or tighter is acceptable as it falls within the original ±5% specification band
Impedance (Max): Substitute impedance up to 80 Ohms is acceptable; lower impedance provides improved performance
Current - Reverse Leakage: Lower leakage current values indicate superior device characteristics

Compliance Considerations:

RoHS Status: Substitute must maintain RoHS compliance (RoHS3 acceptable)
Moisture Sensitivity Level: MSL 1 (Unlimited) required
Product Status: Active product status ensures ongoing availability and supply chain continuity

All three substitute parts meet these criteria and are qualified for direct replacement in applications where the DZ2J05100L was originally specified.

Parameter Comparison

Parameter	DZ2J05100L (Panasonic)	UDZSTE-175.1B (Rohm)	UDZVFHTE-175.1B (Rohm)	UDZVTE-175.1B (Rohm)
Manufacturer	Panasonic Electronic Components	Rohm Semiconductor	Rohm Semiconductor	Rohm Semiconductor
Voltage - Zener (Nom)	5.1 V	5.1 V	5.09 V	5.1 V
Tolerance	±5%	±2%	±2.16%	Not specified
Power - Max	200 mW	200 mW	200 mW	200 mW
Impedance (Max)	60 Ohms	80 Ohms	80 Ohms	80 Ohms
Current - Reverse Leakage @ Vr	1 µA @ 2 V	2 µA @ 1.5 V	2 µA @ 1.5 V	2 µA @ 1.5 V
Operating Temperature	Not specified	-55°C ~ 150°C	150°C (TJ)	-55°C ~ 150°C
Package / Case	SC-90, SOD-323F	SC-90, SOD-323F	SC-90, SOD-323F	SC-90, SOD-323F
Supplier Device Package	SMini2-F5-B	UMD2	UMD2	UMD2
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Discontinued at DiGi Electronics	Active	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Grade	Standard	Standard	Automotive (AEC-Q101)	Standard

Engineering Selection Recommendations

UDZSTE-175.1B (Rohm Semiconductor)

This substitute provides direct electrical equivalence with improved tolerance specification (±2% versus ±5%). The part maintains identical power rating, package configuration, and surface mount compatibility. Active product status ensures supply chain availability. ROHS3 compliance meets current environmental standards. Selection of this part is appropriate for applications requiring standard-grade components with enhanced voltage accuracy.

UDZVFHTE-175.1B (Rohm Semiconductor)

This substitute is qualified to AEC-Q101 automotive standards and carries automotive-grade designation. Nominal voltage is 5.09 V with ±2.16% tolerance, placing it within the acceptable substitution band. Identical power rating and package specifications enable direct replacement. This part is specified for applications requiring automotive-grade reliability and qualification. Maximum junction temperature rating of 150°C supports extended thermal operating conditions.

UDZVTE-175.1B (Rohm Semiconductor)

This substitute offers the closest electrical match with 5.1 V nominal voltage and identical 200 mW power rating. Operating temperature range of -55°C to 150°C provides comprehensive thermal coverage. Active product status with highest inventory availability (185,400 pcs) ensures supply continuity. ROHS3 compliance and MSL 1 rating maintain environmental and moisture sensitivity standards. This part is recommended for general-purpose applications requiring maximum supply availability.

All three substitutes are qualified for direct replacement based on matching electrical parameters, identical package specifications, active product status, and current compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the UDZVFHTE-175.1B substitute for the DZ2J05100L in non-automotive applications?

A: Yes. The UDZVFHTE-175.1B is automotive-qualified but functions as a standard Zener diode in non-automotive circuits. Automotive qualification represents an additional quality assurance level and does not restrict use in standard applications. The 5.09 V nominal voltage falls within the acceptable substitution band for 5.1 V specifications.

Q: What is the significance of the impedance difference between the original part (60 Ohms) and substitutes (80 Ohms)?

A: Impedance affects dynamic voltage regulation characteristics. The substitute parts with 80 Ohms impedance represent a 33% increase from the original 60 Ohms specification. This difference is acceptable for most voltage regulation applications. Circuit designers should verify impedance impact in high-frequency or precision regulation applications through circuit simulation or testing.

Q: Are all three substitute parts interchangeable in the same PCB assembly?

A: Yes. All three substitutes share identical package specifications (SC-90, SOD-323F), surface mount configuration, and electrical ratings (5.1 V nominal, 200 mW power). Physical footprint and electrical performance are compatible for direct PCB substitution without layout modifications.

Q: Why do the substitute parts show different reverse leakage current specifications (2 µA @ 1.5 V versus 1 µA @ 2 V)?

A: Leakage current is measured at different voltage and temperature conditions. The substitute specification of 2 µA @ 1.5 V represents measurement at lower voltage than the original 1 µA @ 2 V specification. Direct numerical comparison is not valid due to different test conditions. Both specifications indicate acceptable leakage performance for voltage regulation applications.

Q: Which substitute part should be selected for maximum supply availability?

A: The UDZVTE-175.1B offers the highest inventory level at 185,400 pcs. This part provides optimal supply chain continuity for high-volume production requirements. The UDZSTE-175.1B (164,200 pcs) and UDZVFHTE-175.1B (65,400 pcs) provide alternative availability options.

Q: Is RoHS3 compliance equivalent to the original RoHS compliance?

A: ROHS3 represents the current RoHS Directive implementation and supersedes earlier RoHS versions. ROHS3 compliance is fully compatible with applications originally specified for RoHS compliance. All substitute parts meet current environmental regulatory requirements.

Q: Can the DZ2J05100L be replaced with a substitute part having ±2% tolerance in applications requiring ±5% tolerance?

A: Yes. Tighter tolerance (±2%) is a performance improvement over the original ±5% specification. A ±2% tolerance part will satisfy any application requirement for ±5% tolerance. The substitute provides enhanced voltage accuracy without compromising circuit compatibility.

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