DDZ30DS-7 Equivalent & Substitute Parts

Part Overview

The DDZ30DS-7 is an active Zener diode manufactured by Diodes Incorporated, rated at 30 V nominal with 200 mW maximum power dissipation in a surface mount SOD-323 package. This component is designed for voltage regulation and protection applications requiring precise voltage reference characteristics. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

DDZ30DS-7

Diodes IncorporatedIn Stock: 40354DDZ30DS-7 Datasheet

Current PartRFQ

BZX384-B30,115

Nexperia USA Inc.In Stock: 25111BZX384-B30,115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DDZ30DS-7 is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Zener voltage rating: 30 V nominal (fixed reference point)
• Package type: SOD-323 surface mount (mechanical compatibility)
• Operating temperature range: -65°C to 150°C (thermal envelope)
• RoHS3 compliance and MSL 1 rating (regulatory and handling requirements)

Secondary Compatibility Parameters:

• Voltage tolerance: ±2.5% or tighter (voltage accuracy)
• Power dissipation: 200 mW or greater (thermal capacity)
• Reverse leakage current: 50 nA or lower (leakage performance)
• Forward voltage characteristics: compatibility with circuit bias conditions

The BZX384-B30,115 meets all primary substitution criteria and exceeds secondary parameters in power rating (300 mW vs. 200 mW) and voltage tolerance (±2% vs. ±2.5%), making it a direct functional substitute.

Parameter Comparison

Engineering Selection Recommendations

DDZ30DS-7 (Diodes Incorporated) is the primary component selection when:

• Original design specification calls for this exact part number
• Inventory availability is confirmed (40,300 pcs in stock)
• Impedance specification of 55 Ohms maximum is a design requirement
• Power dissipation requirement is limited to 200 mW

BZX384-B30,115 (Nexperia USA Inc.) is a qualified substitute when:

• DDZ30DS-7 supply is unavailable or lead times exceed project requirements
• Circuit design tolerates higher impedance (80 Ohms vs. 55 Ohms)
• Higher power dissipation capability (300 mW) provides additional thermal margin
• Tighter voltage tolerance (±2%) improves voltage regulation accuracy
• Both parts maintain identical operating temperature range, package form factor, and regulatory compliance (ROHS3, MSL 1)

Both parts are active products with confirmed inventory and carry equivalent REACH and ECCN classifications (EAR99).

Frequently Asked Questions (FAQ)

Q: Can BZX384-B30,115 be used as a direct replacement for DDZ30DS-7 in existing designs?

A: Yes. Both components share identical 30 V zener voltage rating, SOD-323 package, -65°C to 150°C operating temperature range, and ROHS3 compliance. The substitute part offers improved voltage tolerance (±2% vs. ±2.5%) and higher power rating (300 mW vs. 200 mW), making it functionally compatible for voltage regulation and protection circuits.

Q: What is the impact of the 80 Ohm impedance in BZX384-B30,115 versus 55 Ohm in DDZ30DS-7?

A: Higher impedance (Zzt) results in slightly increased output impedance of the zener regulator, which may affect voltage regulation performance under dynamic load conditions. Circuit designs with impedance-sensitive applications should evaluate this parameter against specific load transient requirements.

Q: Are there packaging differences between these parts?

A: Both parts use SOD-323 surface mount package (SC-76 case designation). DDZ30DS-7 is supplied in Tape & Reel (TR) format, while BZX384-B30,115 is supplied in Cut Tape (CT) and Digi-Reel® format. These are standard packaging variations for the same physical component footprint.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both DDZ30DS-7 and BZX384-B30,115 are ROHS3 compliant, REACH unaffected, carry EAR99 ECCN classification, and share identical MSL 1 (unlimited) moisture sensitivity rating. They are suitable for equivalent applications requiring these certifications.

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

A: DDZ30DS-7 specifies 50 nA @ 23 V, while BZX384-B30,115 specifies 50 nA @ 21 V. Both maintain equivalent leakage performance within their respective measurement conditions. The slight difference in measurement voltage does not affect functional compatibility.

Q: Can these parts be used interchangeably in high-temperature applications?

A: Yes. Both parts share the identical operating temperature range of -65°C to 150°C, allowing interchangeable use in applications spanning this thermal envelope without derating or additional thermal management considerations.