2SA1930,Q(J Equivalent & Substitute Parts

Part Overview

The 2SA1930,Q(J is a Bipolar (BJT) PNP transistor manufactured by Toshiba Semiconductor and Storage, rated for 180 V collector-emitter breakdown voltage and 2 A maximum collector current. This component is classified as obsolete, necessitating identification of active substitute parts for new designs and ongoing production requirements. The through-hole TO-220NIS package and 2 W power rating define its application scope in power switching and amplification circuits.

Substiute Parts

2SA1930,Q(J

Toshiba Semiconductor and StorageIn Stock: 10212SA1930,Q(J Datasheet

Current PartRFQ

TTA004B,Q

Toshiba Semiconductor and StorageIn Stock: 933TTA004B,Q Datasheet

SimilarRFQ

2SA1668

Sanken Electric USA Inc.In Stock: 22262SA1668 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 2SA1930,Q(J is determined by the following critical parameters:

Primary Substitution Criteria:

• Transistor Type: PNP (mandatory match)
• Collector Current (Ic) (Max): Substitute must equal or exceed 2 A
• Voltage - Collector Emitter Breakdown (Max): Substitute must equal or exceed 180 V
• Mounting Type: Through Hole (mandatory match)
• Operating Temperature: 150°C (TJ) minimum

Secondary Compatibility Factors:

• Package / Case: TO-220 family packages acceptable
• Power Rating: Substitute must support application power dissipation requirements
• Frequency - Transition: Application-dependent; higher values provide design margin

The substitute parts listed below satisfy the primary criteria within the allowed electrical and mechanical parameter ranges for this product category.

Parameter Comparison

Engineering Selection Recommendations

2SA1668 (Sanken Electric USA Inc.)

The 2SA1668 is the primary substitute for the 2SA1930,Q(J. This part maintains identical collector current (2 A) and package type (TO-220-3), with superior voltage rating (200 V versus 180 V). The 2SA1668 is active in production status and ROHS3 compliant, eliminating obsolescence risk. Power dissipation capability (25 W) exceeds the original specification (2 W), providing thermal margin. The transition frequency (20 MHz) is lower than the original (200 MHz); this parameter is application-dependent and must be evaluated against circuit requirements.

TTA004B,Q (Toshiba Semiconductor and Storage)

The TTA004B,Q is a secondary substitute option. This part is active in production and RoHS compliant. However, the collector current rating (1.5 A) is below the original specification (2 A), restricting its use to applications with reduced current demands. The voltage rating (160 V) is also below the original (180 V). The TO-126N package differs from the original TO-220NIS, requiring PCB layout modification. The transition frequency (100 MHz) is lower than the original. This substitute is suitable only when circuit current and voltage requirements are confirmed below the stated limits.

Frequently Asked Questions (FAQ)

Q: Can the 2SA1668 directly replace the 2SA1930,Q(J without circuit modification?

A: The 2SA1668 maintains the same TO-220-3 package and collector current rating (2 A), enabling direct PCB mounting. However, circuit performance depends on transition frequency requirements. The 2SA1668 operates at 20 MHz versus the original 200 MHz. Applications requiring higher switching speeds must be evaluated against this parameter.

Q: Is the TTA004B,Q suitable for all 2SA1930,Q(J applications?

A: No. The TTA004B,Q has a maximum collector current of 1.5 A, below the original 2 A specification. It is suitable only for circuits designed to operate at or below 1.5 A. Additionally, the TO-126N package differs from the original TO-220NIS, requiring PCB redesign.

Q: What is the significance of the voltage rating difference between substitutes?

A: The 2SA1930,Q(J has a 180 V breakdown rating. The 2SA1668 (200 V) exceeds this specification, providing design margin. The TTA004B,Q (160 V) is below the original specification and is unsuitable for circuits operating near 180 V.

Q: Are both substitute parts RoHS compliant?

A: Yes. The 2SA1668 is ROHS3 compliant. The TTA004B,Q is RoHS compliant. Both meet environmental regulatory requirements for new designs.

Q: How does the power rating affect substitution?

A: The 2SA1930,Q(J is rated for 2 W maximum power dissipation. Both substitutes exceed this rating (TTA004B,Q: 10 W; 2SA1668: 25 W), providing thermal margin. Higher power ratings do not restrict substitution; they indicate improved thermal performance.

Q: What is the impact of DC Current Gain (hFE) differences?

A: The 2SA1930,Q(J specifies hFE minimum of 100 at 100 mA, 5 V. The TTA004B,Q provides hFE of 140 at the same conditions, indicating stronger amplification. The 2SA1668 specifies hFE of 60 at different conditions (700 mA, 10 V). Circuit bias networks may require adjustment to accommodate hFE variations.

Q: Can the TTA004B,Q be used in high-current applications?

A: No. The TTA004B,Q maximum collector current is 1.5 A. Applications requiring 2 A operation must use the 2SA1668 or equivalent parts rated for 2 A or higher.