DDZX30D-13 Equivalent & Substitute Parts

Part Overview

The DDZX30D-13 is a Zener diode manufactured by Diodes Incorporated, rated for 30 V nominal Zener voltage with 300 mW maximum power dissipation in a surface mount SOT-23-3 package. This component is classified as Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design flexibility is required while maintaining electrical and mechanical compatibility within specified parameter tolerances.

Substiute Parts

DDZX30D-13

Diodes IncorporatedIn Stock: 1010DDZX30D-13 Datasheet

Current PartRFQ

DDZX30D-7

Diodes IncorporatedIn Stock: 206919DDZX30D-7 Datasheet

Parametric EquivalentRFQ

BZX84C30LT1G

onsemiIn Stock: 6374BZX84C30LT1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DDZX30D-13 is determined by the following critical parameters:

Primary Substitution Criteria:

• Zener voltage rating: 30 V nominal
• Package type: SOT-23-3 (TO-236-3, SC-59)
• Mounting configuration: Surface Mount
• Operating temperature range: -65°C to 150°C minimum
• RoHS3 compliance requirement

Secondary Compatibility Parameters:

• Power dissipation rating: 300 mW or greater
• Zener voltage tolerance: ±3% to ±7% acceptable
• Impedance (Zzt): 55 to 80 Ohms maximum
• Reverse leakage current: 50 nA or lower @ specified voltage
• Forward voltage: 900 mV maximum @ 10 mA

Parts meeting all primary criteria and maintaining secondary parameter specifications within acceptable design margins are classified as direct substitutes. Parametric equivalents from the same manufacturer (Diodes Incorporated) with identical electrical specifications are listed as primary alternatives. Cross-manufacturer substitutes are included when electrical performance and package compatibility are verified.

Parameter Comparison

Engineering Selection Recommendations

DDZX30D-7 (Diodes Incorporated): This part is a parametric equivalent to the DDZX30D-13, sharing identical electrical specifications including 30 V Zener voltage, ±3% tolerance, 300 mW power rating, and 55 Ohms maximum impedance. Both parts are manufactured by Diodes Incorporated, carry Active product status, and maintain ROHS3 compliance with MSL 1 rating. The DDZX30D-7 is suitable for direct substitution in applications where the DDZX30D-13 is specified, with significantly higher inventory availability (206,894 units in stock versus 999 units).

BZX84C30LT1G (onsemi): This cross-manufacturer substitute maintains the 30 V Zener voltage rating and SOT-23-3 package configuration. Key parameter differences include ±7% tolerance (versus ±3%), 225 mW maximum power (versus 300 mW), and 80 Ohms maximum impedance (versus 55 Ohms). The BZX84C30LT1G is suitable for applications where the reduced power rating and wider tolerance are acceptable within circuit design margins. This part carries Active product status and ROHS3 compliance. Selection of this substitute requires confirmation that the application circuit tolerates the specified parameter variations.

All three parts maintain identical operating temperature ranges (-65°C to 150°C), forward voltage characteristics (900 mV @ 10 mA), and reverse leakage specifications (50 nA). All parts are RoHS3 compliant with MSL 1 moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can DDZX30D-7 be used as a direct replacement for DDZX30D-13?

A: Yes. The DDZX30D-7 is a parametric equivalent with identical Zener voltage (30 V), tolerance (±3%), power rating (300 mW), impedance (55 Ohms), and package configuration (SOT-23-3). Both parts are manufactured by Diodes Incorporated and carry identical compliance certifications. No circuit modifications are required.

Q: What are the limitations of using BZX84C30LT1G as a substitute?

A: The BZX84C30LT1G has three parameter differences: (1) Zener voltage tolerance of ±7% instead of ±3%, (2) maximum power dissipation of 225 mW instead of 300 mW, and (3) maximum impedance of 80 Ohms instead of 55 Ohms. Applications requiring tighter voltage regulation or higher power dissipation capability may not be suitable for this substitute. Circuit analysis is required to confirm acceptability.

Q: Are all three parts compatible with the same PCB footprint?

A: Yes. All three parts use the SOT-23-3 package (also designated TO-236-3 or SC-59), which specifies identical pin configuration and land pattern requirements. PCB layout modifications are not required when substituting between these parts.

Q: What is the difference between DDZX30D-13 and DDZX30D-7 packaging?

A: Both parts are supplied in Tape & Reel (TR) packaging format. The DDZX30D-13 is available in quantities of 999 units, while DDZX30D-7 is available in significantly larger quantities (206,894 units). The physical package and component specifications are identical.

Q: Do all substitute parts meet RoHS3 compliance requirements?

A: Yes. DDZX30D-13, DDZX30D-7, and BZX84C30LT1G are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. All parts are REACH Unaffected and carry EAR99 ECCN classification.

Q: Which substitute part should be selected for new designs?

A: Selection depends on application requirements and supply availability. For designs requiring ±3% tolerance and 300 mW power capability, DDZX30D-7 is preferred due to higher inventory availability and identical specifications. For applications where ±7% tolerance and 225 mW power are acceptable, BZX84C30LT1G provides cross-manufacturer sourcing flexibility.