DZ2W09100L Equivalent & Substitute Parts

Part Overview

The DZ2W09100L is a Zener diode manufactured by Panasonic Electronic Components, rated at 9.1 V nominal with 1 W maximum power dissipation. This component is designed for voltage regulation and protection applications in surface mount configurations using the SOD-123F package. The part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives from active product lines to maintain design continuity and ensure supply chain availability.

Substiute Parts

DZ2W09100L

Panasonic Electronic ComponentsIn Stock: 4656DZ2W09100L Datasheet

Current PartRFQ

KDZVTFTR9.1B

Rohm SemiconductorIn Stock: 7931KDZVTFTR9.1B Datasheet

SimilarRFQ

KDZVTR9.1B

Rohm SemiconductorIn Stock: 2079KDZVTR9.1B Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DZ2W09100L is determined by the following critical parameters:

Primary Substitution Criteria:

• Nominal Zener voltage within acceptable circuit tolerance
• Maximum power rating equal to or greater than 1 W
• Surface mount packaging in SOD-123F form factor
• Reverse leakage current specification at rated voltage
• RoHS compliance status

Substitute Parts Identified:

The KDZVTR9.1B and KDZVTFTR9.1B from Rohm Semiconductor meet the core electrical and mechanical requirements for substitution. Both parts are rated at 9.65 V nominal Zener voltage with 1 W maximum power dissipation in SOD-123F surface mount packages. The 9.65 V rating represents a 6.04% deviation from the DZ2W09100L nominal 9.1 V specification, which falls within acceptable tolerance bands for most voltage regulation applications. Both substitute parts are active products with current inventory availability and maintain RoHS3 compliance with MSL 1 moisture sensitivity rating.

Parameter Comparison

Engineering Selection Recommendations

KDZVTR9.1B Selection: The KDZVTR9.1B is an active product with 2022 pieces in current inventory. This part maintains identical power rating and package form factor to the DZ2W09100L. The 9.65 V nominal voltage represents a 6.04% increase from the original 9.1 V specification. This part is suitable for applications where the voltage tolerance band accommodates the higher nominal value and where automotive qualification is not required.

KDZVTFTR9.1B Selection: The KDZVTFTR9.1B is an active product with 7911 pieces in current inventory, offering the highest stock availability. This part includes AEC-Q101 automotive qualification and carries a specified tolerance of ±6.04%. The 9.65 V nominal voltage and automotive-grade designation make this part suitable for applications requiring enhanced reliability documentation and automotive supply chain compliance. The higher inventory level provides superior supply chain security.

Both substitute parts maintain ROHS3 compliance, exceeding the RoHS compliance requirement of the original part. Both parts are packaged in SOD-123F form factor, ensuring direct mechanical compatibility with existing PCB layouts. The reverse leakage current specification of 20 µA at 6 V for both Rohm parts is acceptable for most circuit applications, though it represents a 2x increase compared to the original 10 µA specification at 5 V.

Frequently Asked Questions (FAQ)

Q: Can the KDZVTR9.1B or KDZVTFTR9.1B be used as direct replacements for the DZ2W09100L?

A: Both Rohm parts are mechanically and electrically compatible substitutes. They share identical SOD-123F packaging and 1 W power rating. The primary difference is the nominal Zener voltage of 9.65 V versus 9.1 V. Circuit designs must accommodate this voltage difference within their tolerance specifications.

Q: What is the voltage difference between the original part and the substitutes?

A: The DZ2W09100L is rated at 9.1 V nominal, while both KDZVTR9.1B and KDZVTFTR9.1B are rated at 9.65 V nominal. This represents a 0.55 V or 6.04% increase. Applications requiring precise voltage regulation within narrow bands must evaluate this difference against circuit requirements.

Q: Are there differences between the KDZVTR9.1B and KDZVTFTR9.1B?

A: Both parts share identical electrical specifications and packaging. The KDZVTFTR9.1B includes AEC-Q101 automotive qualification and specifies a tolerance of ±6.04%, while the KDZVTR9.1B does not list a tolerance specification. The KDZVTFTR9.1B has higher inventory availability (7911 pieces versus 2022 pieces).

Q: Do the substitute parts meet RoHS requirements?

A: Yes. Both KDZVTR9.1B and KDZVTFTR9.1B are ROHS3 compliant, which exceeds the RoHS compliance requirement of the original DZ2W09100L.

Q: What is the reverse leakage current difference?

A: The DZ2W09100L specifies 10 µA reverse leakage at 5 V. Both Rohm substitutes specify 20 µA reverse leakage at 6 V. This represents a 2x increase in leakage current. Applications sensitive to leakage current performance must evaluate this specification against circuit requirements.

Q: Are the substitute parts available in the same packaging format?

A: Yes. All three parts use SOD-123F surface mount packaging, ensuring direct mechanical compatibility with existing PCB designs and assembly processes.

Q: What is the moisture sensitivity rating for the substitute parts?

A: Both KDZVTR9.1B and KDZVTFTR9.1B carry MSL 1 (Unlimited) moisture sensitivity rating, identical to the original DZ2W09100L. This indicates no moisture sensitivity precautions are required during storage or handling.