DDZ2V7ASF-7 Equivalent & Substitute Parts

Part Overview

The DDZ2V7ASF-7 is an active Zener diode manufactured by Diodes Incorporated, rated at 2.65 V nominal with 500 mW maximum power dissipation in a surface mount SOD-323F package. This component is designed for voltage regulation and protection applications requiring precise Zener voltage characteristics in compact form factors. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances while maintaining the same mounting technology and package compatibility.

Substiute Parts

DDZ2V7ASF-7

Diodes IncorporatedIn Stock: 63248DDZ2V7ASF-7 Datasheet

Current PartRFQ

BZT52C2V7S-TP

Micro Commercial CoIn Stock: 4064BZT52C2V7S-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DDZ2V7ASF-7 is determined by the following critical parameters:

Zener Voltage Compatibility: The nominal Zener voltage must fall within the application tolerance window. The DDZ2V7ASF-7 operates at 2.65 V with ±4% tolerance, establishing a functional range of 2.544 V to 2.756 V.

Power Dissipation Rating: The substitute must support the maximum power requirement of 500 mW or higher to ensure thermal stability under worst-case operating conditions.

Package and Mounting: Surface mount SOD-323 family packages (SOD-323F, SOD-323) are mechanically and electrically compatible for PCB assembly processes.

Temperature Operating Range: The substitute must maintain performance across the -65°C to 150°C operating window.

Regulatory Compliance: Both RoHS3 compliance and REACH unaffected status are required for equivalent substitution.

Forward Voltage Characteristics: Forward voltage at 10 mA must not exceed 900 mV to maintain circuit performance in forward-biased conditions.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration - Power Dissipation: The BZT52C2V7S-TP substitute is rated at 200 mW maximum power, which is 60% lower than the DDZ2V7ASF-7 specification of 500 mW. This substitution is valid only for applications where the actual power dissipation does not exceed 200 mW under all operating conditions.

Zener Voltage Alignment: The substitute operates at 2.7 V nominal compared to 2.65 V for the main part. This 50 mV difference (1.9% variance) falls within typical circuit tolerance margins for voltage regulation applications. The substitute's ±7% tolerance band (2.511 V to 2.889 V) overlaps substantially with the main part's ±4% band (2.544 V to 2.756 V).

Regulatory and Compliance Status: Both parts maintain identical RoHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity rating (MSL 1), ensuring equivalent environmental and regulatory qualification.

Package Compatibility: Both components use SOD-323 family surface mount packages suitable for automated PCB assembly. The SOD-323F variant of the main part and SOD-323 variant of the substitute are mechanically interchangeable on standard pick-and-place equipment.

Reverse Leakage Performance: The substitute exhibits superior reverse leakage characteristics (20 µA versus 120 µA at 1 V), which may provide improved circuit performance in low-current applications.

Temperature Performance: Identical operating temperature range (-65°C to 150°C) ensures equivalent thermal performance across all specified conditions.

Frequently Asked Questions (FAQ)

Q: Can the BZT52C2V7S-TP replace the DDZ2V7ASF-7 in all applications?

A: Substitution is valid when the circuit design accommodates the 200 mW power limitation and the 2.7 V nominal voltage. Applications requiring the full 500 mW dissipation capability must use the original DDZ2V7ASF-7 or equivalent higher-power rated alternatives.

Q: What is the voltage difference between these two parts, and does it matter?

A: The main part operates at 2.65 V nominal while the substitute operates at 2.7 V nominal, a difference of 50 mV. For voltage regulation circuits with ±5% or greater tolerance margins, this difference is typically acceptable. Circuit-specific tolerance analysis is required for precision applications.

Q: Are the SOD-323F and SOD-323 packages interchangeable?

A: Both packages belong to the SOD-323 family and are mechanically compatible for surface mount PCB assembly. Footprint dimensions and lead spacing are equivalent, allowing direct substitution on existing PCB layouts.

Q: What are the key parameters that determine if a substitute is acceptable?

A: The critical parameters are: (1) Zener voltage within application tolerance, (2) power dissipation rating sufficient for circuit requirements, (3) surface mount package compatibility, (4) operating temperature range coverage, and (5) regulatory compliance status.

Q: Does the substitute have better or worse leakage characteristics?

A: The BZT52C2V7S-TP exhibits lower reverse leakage current (20 µA versus 120 µA at 1 V), which represents improved performance for low-current applications and reduced standby power consumption.

Q: Are both parts RoHS3 compliant?

A: Yes, both the DDZ2V7ASF-7 and BZT52C2V7S-TP are RoHS3 compliant with REACH unaffected status and unlimited moisture sensitivity rating (MSL 1).