Equivalent & Substitute Parts for 2DA2018-7

Part Overview

The 2DA2018-7 is a Bipolar (BJT) Transistor, PNP type, manufactured by Diodes Incorporated. This surface mount device is rated for 12 V collector-emitter breakdown voltage with a maximum collector current of 500 mA and operates across a temperature range of -55°C to 150°C. The device is currently classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support, production continuity, and component sourcing.

Substiute Parts

2DA2018-7

Diodes IncorporatedIn Stock: 533542DA2018-7 Datasheet

Current PartRFQ

2SA2030T2L

Rohm SemiconductorIn Stock: 189722SA2030T2L Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2DA2018-7 is determined by strict electrical and mechanical parameter matching. The following criteria establish functional equivalence:

Electrical Parameters (Required Match):

• Transistor Type: PNP
• Maximum Collector Current (Ic): 500 mA
• Maximum Collector-Emitter Breakdown Voltage: 12 V
• Vce Saturation characteristics: 250mV @ 10mA, 200mA
• Collector Cutoff Current (ICBO): 100nA
• DC Current Gain (hFE): 270 minimum @ 10mA, 2V
• Maximum Power Dissipation: 150 mW
• Transition Frequency: 260MHz

Mechanical Parameters (Required Match):

• Mounting Type: Surface Mount
• Package compatibility within SOT family variants

Compliance Parameters:

• RoHS3 Compliance
• MSL Rating: 1 (Unlimited)

The 2SA2030T2L from Rohm Semiconductor meets all specified electrical parameters and compliance requirements, establishing it as a parametric equivalent for the obsolete 2DA2018-7.

Parameter Comparison

Engineering Selection Recommendations

The 2SA2030T2L is the parametric equivalent substitute for the obsolete 2DA2018-7. Selection of this substitute is supported by the following factors:

Product Status: The 2SA2030T2L maintains active product status with Rohm Semiconductor, ensuring ongoing availability and manufacturing support. The 2DA2018-7 is classified as obsolete, necessitating transition to an active equivalent.

Electrical Equivalence: All critical electrical parameters match exactly, including collector current rating, breakdown voltage, saturation characteristics, current gain, power dissipation, and transition frequency. These parameters ensure functional interchangeability in circuit applications.

Compliance Alignment: Both devices maintain ROHS3 compliance and identical MSL ratings, confirming compatibility with current manufacturing and environmental standards.

Package Consideration: The 2SA2030T2L uses SOT-723 (VMT3) packaging compared to the SOT-523 package of the 2DA2018-7. Both are surface mount packages within the SOT family. Physical footprint verification is required during PCB layout transition to confirm mechanical compatibility with existing board designs.

Availability: The 2SA2030T2L is currently in active production with documented inventory availability, supporting immediate procurement for new designs and production requirements.

Frequently Asked Questions (FAQ)

Q: Can the 2SA2030T2L be used as a direct replacement for the 2DA2018-7 in existing designs?

A: The 2SA2030T2L is electrically equivalent to the 2DA2018-7 across all specified parameters. However, the package change from SOT-523 to SOT-723 (VMT3) requires PCB layout verification. Physical footprint dimensions must be confirmed to ensure mechanical compatibility with existing board designs before implementation.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution eligibility is determined by matching the following parameters: PNP transistor type, 500 mA maximum collector current, 12 V collector-emitter breakdown voltage, 250mV saturation voltage at specified bias conditions, 100nA collector cutoff current, 270 minimum DC current gain, 150 mW maximum power dissipation, and 260MHz transition frequency.

Q: Are there compliance differences between the 2DA2018-7 and 2SA2030T2L?

A: Both devices maintain ROHS3 compliance and MSL Level 1 (Unlimited) ratings. No compliance differences exist between the two parts.

Q: What is the significance of the package change from SOT-523 to SOT-723?

A: SOT-723 (VMT3) is a smaller surface mount package compared to SOT-523. This package change requires verification of PCB footprint compatibility, trace routing, and thermal management characteristics. Consult device datasheets for precise dimensional specifications before PCB redesign.

Q: Why is the 2DA2018-7 classified as obsolete?

A: The 2DA2018-7 is listed as obsolete by the manufacturer. The 2SA2030T2L represents the active equivalent from Rohm Semiconductor, providing continued access to equivalent functionality with ongoing manufacturing support.

Q: What packaging formats are available for the 2SA2030T2L?

A: The 2SA2030T2L is available in Cut Tape (CT) and Digi-Reel® packaging formats, compared to the Tape & Reel (TR) format of the 2DA2018-7. Packaging format selection depends on production volume and assembly process requirements.