2SD1005-U-TP Equivalent & Substitute Parts

Part Overview

The 2SD1005-U-TP is a Surface Mount NPN Bipolar Junction Transistor manufactured by Micro Commercial Co, rated for 80V collector-emitter breakdown voltage and 1A maximum collector current. This device is classified as Obsolete, indicating it is no longer in active production. The part is packaged in SOT-89 (TO-243AA) configuration and is suitable for general-purpose switching and amplification applications requiring moderate frequency response up to 160MHz.

Due to its obsolete status, sourcing original 2SD1005-U-TP units may present supply chain challenges. Equivalent substitute parts with matching electrical and mechanical specifications are necessary to maintain design continuity and ensure long-term component availability for production and repair applications.

Substiute Parts

2SD1005-U-TP

Micro Commercial CoIn Stock: 9802SD1005-U-TP Datasheet

Current PartRFQ

2SD1898T100P

Rohm SemiconductorIn Stock: 32612SD1898T100P Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SD1005-U-TP is determined by strict equivalence across the following critical electrical and mechanical parameters:

Electrical Equivalence Criteria:

• Transistor Type: NPN configuration
• Maximum Collector Current (Ic): 1 A minimum
• Collector-Emitter Breakdown Voltage (VCEO): 80 V minimum
• Maximum Power Dissipation: 500 mW minimum
• Transition Frequency: 160 MHz minimum

Mechanical Equivalence Criteria:

• Mounting Type: Surface Mount
• Package / Case: TO-243AA (SOT-89 equivalent)
• Pin Configuration: Compatible with SOT-89 footprint

Compliance Criteria:

• RoHS3 Compliance required
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

The 2SD1898T100P from Rohm Semiconductor meets the core electrical requirements (1 A collector current, 80 V breakdown voltage, TO-243AA package) and maintains RoHS3 compliance. However, this substitute exhibits differences in secondary parameters including power dissipation (2 W vs. 500 mW), transition frequency (100 MHz vs. 160 MHz), and DC current gain characteristics. These differences must be evaluated within the context of the specific application circuit.

Parameter Comparison

Engineering Selection Recommendations

Product Status Considerations:

The 2SD1005-U-TP is classified as Obsolete, indicating discontinued production and potential long-term supply unavailability. The 2SD1898T100P is classified as Not For New Designs, indicating it remains available but is not recommended for new product development. Both parts carry ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring environmental and handling compatibility.

Substitution Feasibility:

The 2SD1898T100P provides functional equivalence for applications where the following conditions are satisfied:

1. Circuit design does not depend on transition frequency exceeding 100 MHz
2. Application can tolerate higher power dissipation capability (2 W vs. 500 mW)
3. Lower collector cutoff current (1 µA vs. 100 nA) is acceptable for the intended function
4. DC current gain differences at different measurement conditions do not impact circuit performance

Compliance Status:

Both parts maintain ROHS3 compliance and are suitable for applications requiring environmental regulation adherence. The 2SD1898T100P includes REACH Unaffected status, providing additional regulatory clarity for European market applications.

Inventory Availability:

The 2SD1898T100P is available in significantly higher inventory (3,200 pcs) compared to the 2SD1005-U-TP (890 pcs), providing improved supply chain reliability for ongoing production requirements.

Frequently Asked Questions (FAQ)

Q: Can the 2SD1898T100P directly replace the 2SD1005-U-TP in existing designs?

A: Direct replacement is possible only if the circuit design does not require the higher transition frequency (160 MHz) of the original part. The 2SD1898T100P operates at 100 MHz maximum, which is suitable for lower-frequency switching applications. Pin configuration and package footprint (TO-243AA) are identical, enabling direct PCB substitution.

Q: What are the key electrical differences between these parts?

A: The primary differences are transition frequency (160 MHz vs. 100 MHz), maximum power dissipation (500 mW vs. 2 W), collector cutoff current (100 nA vs. 1 µA), and DC current gain characteristics measured at different operating points. The 2SD1898T100P offers superior saturation voltage performance and higher power handling capability.

Q: Are both parts RoHS compliant?

A: Yes, both the 2SD1005-U-TP and 2SD1898T100P are ROHS3 compliant. Both parts carry unlimited moisture sensitivity rating (MSL 1), indicating no special storage or handling requirements beyond standard component practices.

Q: What is the significance of the "Not For New Designs" status of the 2SD1898T100P?

A: This classification indicates the part is available for current production and repair applications but is not recommended for incorporation into newly developed products. For legacy system maintenance and repair, this part remains a valid substitute. For new product development, alternative active parts should be evaluated.

Q: Are the packages physically identical?

A: Yes, both parts use the TO-243AA package (SOT-89 supplier designation), ensuring identical PCB footprint, pin spacing, and mechanical compatibility. No layout modifications are required for physical substitution.

Q: How do the saturation voltage specifications compare?

A: The 2SD1898T100P exhibits lower saturation voltage (400 mV at 20mA, 500mA) compared to the 2SD1005-U-TP (500 mV at 50mA, 500mA). This represents improved switching efficiency and reduced power loss in saturation mode, beneficial for switching applications.

Q: What applications are suitable for the 2SD1898T100P as a substitute?

A: The 2SD1898T100P is suitable for general-purpose switching, amplification, and driver applications operating at frequencies up to 100 MHz. Applications requiring higher frequency response (above 100 MHz) or specifically dependent on the 160 MHz transition frequency of the original part require alternative evaluation.