DDZX30D-7 Equivalent & Substitute Parts

Part Overview

The DDZX30D-7 is a Zener diode manufactured by Diodes Incorporated, rated at 30 V nominal voltage with 300 mW maximum power dissipation in a surface mount SOT-23-3 package. This component is classified as Active and is ROHS3 compliant. Equivalent and substitute parts are identified based on matching electrical specifications and package compatibility to support design flexibility, inventory management, and supply chain continuity.

Substiute Parts

DDZX30D-7

Diodes IncorporatedIn Stock: 206919DDZX30D-7 Datasheet

Current PartRFQ

DDZX30D-13

Diodes IncorporatedIn Stock: 1010DDZX30D-13 Datasheet

Parametric EquivalentRFQ

BZX84-B30,215

NXP SemiconductorsIn Stock: 93771BZX84-B30,215 Datasheet

MFR RecommendedRFQ

BZX84C30LT1G

onsemiIn Stock: 6374BZX84C30LT1G Datasheet

MFR RecommendedRFQ

SZBZX84C30LT1G

onsemiIn Stock: 65456SZBZX84C30LT1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DDZX30D-7 are grouped based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Voltage - Zener (Nom): 30 V
• Package / Case: SOT-23-3 (TO-236-3, SC-59)
• Mounting Type: Surface Mount
• Operating Temperature Range: -65°C ~ 150°C
• Moisture Sensitivity Level: 1 (Unlimited)

Secondary Considerations:

• Power - Max: 300 mW (primary specification) or lower rated alternatives
• Tolerance: ±3% (primary specification) or wider tolerance alternatives
• Impedance (Max): 55 Ohms (primary specification) or higher impedance alternatives
• Current - Reverse Leakage: 50 nA @ specified voltage

Substitutes are classified into two categories: parametric equivalents (identical electrical specifications) and manufacturer-recommended alternatives (functionally compatible with minor specification variations).

Parameter Comparison

Engineering Selection Recommendations

DDZX30D-13 (Diodes Incorporated)

The DDZX30D-13 is a parametric equivalent to the DDZX30D-7. Both parts share identical electrical specifications: 30 V nominal voltage, ±3% tolerance, 300 mW maximum power, 55 Ohms maximum impedance, and identical operating temperature range. Both are ROHS3 compliant with MSL 1 rating. The DDZX30D-13 is suitable for direct substitution in applications where the DDZX30D-7 is specified, with no electrical or thermal derating required.

BZX84-B30,215 (NXP Semiconductors)

The BZX84-B30,215 is a manufacturer-recommended alternative with automotive-grade qualification (AEC-Q101). This part maintains the 30 V nominal voltage and identical operating temperature range. Specification differences include reduced maximum power (250 mW versus 300 mW), tighter tolerance (±2% versus ±3%), and increased impedance (80 Ohms versus 55 Ohms). The automotive qualification and AEC-Q101 certification make this part suitable for applications requiring automotive-grade components. Power dissipation must be verified to ensure the 250 mW rating is adequate for the application.

BZX84C30LT1G (onsemi)

The BZX84C30LT1G is a manufacturer-recommended alternative with standard-grade classification. This part maintains the 30 V nominal voltage and identical operating temperature range. Specification differences include reduced maximum power (225 mW versus 300 mW), wider tolerance (±7% versus ±3%), and increased impedance (80 Ohms versus 55 Ohms). This part is suitable for applications where the reduced power rating and wider tolerance are acceptable. Power dissipation and voltage regulation tolerance must be verified for the specific application.

SZBZX84C30LT1G (onsemi)

The SZBZX84C30LT1G is a manufacturer-recommended alternative with automotive-grade qualification (AEC-Q101). This part maintains the 30 V nominal voltage and identical operating temperature range. Specification differences include reduced maximum power (225 mW versus 300 mW), wider tolerance (±7% versus ±3%), and increased impedance (80 Ohms versus 55 Ohms). The automotive qualification and AEC-Q101 certification make this part suitable for applications requiring automotive-grade components. Power dissipation and voltage regulation tolerance must be verified for the specific application.

Frequently Asked Questions (FAQ)

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

A: Yes. The DDZX30D-13 is a parametric equivalent with identical electrical specifications, including 30 V nominal voltage, ±3% tolerance, 300 mW maximum power, and 55 Ohms maximum impedance. Both parts use the SOT-23-3 package and share the same operating temperature range. No circuit modifications or derating are required.

Q: What are the key differences between DDZX30D-7 and the onsemi alternatives (BZX84C30LT1G and SZBZX84C30LT1G)?

A: The primary differences are reduced maximum power (225 mW versus 300 mW), wider tolerance (±7% versus ±3%), and increased impedance (80 Ohms versus 55 Ohms). Both onsemi parts maintain the 30 V nominal voltage and SOT-23-3 package compatibility. The SZBZX84C30LT1G includes automotive-grade qualification (AEC-Q101). Applications must verify that the reduced power rating and wider tolerance are acceptable for the circuit design.

Q: Is the NXP BZX84-B30,215 suitable for automotive applications?

A: Yes. The BZX84-B30,215 carries automotive-grade classification with AEC-Q101 qualification. This part is suitable for automotive applications requiring qualified components. The 250 mW maximum power rating and ±2% tolerance must be verified as acceptable for the specific application.

Q: What is the difference between the onsemi BZX84C30LT1G and SZBZX84C30LT1G?

A: Both parts have identical electrical specifications: 30 V nominal voltage, ±7% tolerance, 225 mW maximum power, and 80 Ohms maximum impedance. The key difference is that SZBZX84C30LT1G includes automotive-grade qualification (AEC-Q101), while BZX84C30LT1G is standard-grade. The packaging differs: BZX84C30LT1G is supplied in Cut Tape and Digi-Reel, while SZBZX84C30LT1G is supplied in Tape & Reel.

Q: Can I use a substitute part with lower maximum power rating?

A: Substitution with lower power-rated parts (BZX84-B30,215 at 250 mW or onsemi parts at 225 mW) requires verification that the application's power dissipation does not exceed the substitute part's rating. Circuit analysis must confirm that the actual power dissipation in the application is within the substitute part's maximum specification.

Q: Are all substitute parts RoHS3 compliant?

A: DDZX30D-13, BZX84C30LT1G, and SZBZX84C30LT1G are explicitly specified as ROHS3 compliant. The NXP BZX84-B30,215 RoHS status is not specified in the provided data.

Q: What packaging options are available for these substitute parts?

A: DDZX30D-7 and DDZX30D-13 are supplied in Tape & Reel (TR). BZX84-B30,215 is supplied in Bulk. BZX84C30LT1G is supplied in Cut Tape (CT) and Digi-Reel. SZBZX84C30LT1G is supplied in Tape & Reel (TR). Packaging selection depends on manufacturing process requirements and inventory management practices.

Q: Do all substitute parts use the same SOT-23-3 package?

A: Yes. All substitute parts use the SOT-23-3 package (also designated as TO-236-3 or SC-59). This ensures mechanical and electrical compatibility with the original DDZX30D-7 footprint and pinout.