DTA143EKA-TP Equivalent & Substitute Parts

Part Overview

The DTA143EKA-TP is a pre-biased PNP bipolar junction transistor (BJT) manufactured by Micro Commercial Co, designed for surface mount applications in the SOT-23-3 package. This component integrates internal base and emitter resistors, enabling simplified circuit design for switching and amplification applications. The part is classified as obsolete, which necessitates identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

DTA143EKA-TP

Micro Commercial CoIn Stock: 1133DTA143EKA-TP Datasheet

Current PartRFQ

DTA143ECAT116

Rohm SemiconductorIn Stock: 2293DTA143ECAT116 Datasheet

DirectRFQ

DTA143EKAT246

Rohm SemiconductorIn Stock: 1144DTA143EKAT246 Datasheet

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MMUN2132LT1G

onsemiIn Stock: 50290MMUN2132LT1G Datasheet

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NSVMMUN2132LT1G

onsemiIn Stock: 9998NSVMMUN2132LT1G Datasheet

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PDTA143ET,215

Nexperia USA Inc.In Stock: 2690PDTA143ET,215 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the DTA143EKA-TP is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

• Transistor type: PNP - Pre-Biased configuration
• Maximum collector current: 100 mA
• Collector-emitter breakdown voltage: 50 V
• Internal base resistor (R1): 4.7 kOhms
• Internal emitter-base resistor (R2): 4.7 kOhms
• Mounting type: Surface Mount

Mechanical Equivalence Criteria:

• Package classification: SOT-23-3 (TO-236-3, SC-59) footprint compatibility

Compliance Criteria:

• RoHS3 compliance
• Moisture Sensitivity Level 1 (Unlimited)

Substitute parts are grouped into two categories based on product status and availability:

Direct Substitutes (Active Status): Parts that maintain identical electrical specifications and package footprint, with active manufacturing status enabling procurement for new designs and ongoing production.

Functional Equivalents (Active Status): Parts that maintain core electrical parameters and package compatibility but may exhibit minor variations in secondary specifications (such as DC current gain measurement conditions or saturation voltage characteristics) while remaining functionally interchangeable within the design envelope.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

DTA143ECAT116 (Rohm Semiconductor) and PDTA143ET,215 (Nexperia USA Inc.) are the preferred direct substitutes. Both parts maintain identical electrical specifications to the DTA143EKA-TP, including DC current gain (hFE) of 30 @ 10mA, 5V and Vce saturation of 300 mV. Both manufacturers are active in production, ensuring long-term availability. DTA143ECAT116 is supplied in Cut Tape (CT) & Digi-Reel packaging, while PDTA143ET,215 is supplied in Tape & Reel (TR) format. Both are ROHS3 compliant with MSL 1 rating.

Secondary Substitutes (Functional Equivalence):

DTA143EKAT246 (Rohm Semiconductor), MMUN2132LT1G (onsemi), and NSVMMUN2132LT1G (onsemi) are functionally equivalent alternatives. These parts maintain the core electrical parameters (100 mA Ic, 50 V Vce breakdown, 4.7 kOhm internal resistors) and SOT-23-3 package compatibility. Minor variations exist in secondary specifications: MMUN2132LT1G and NSVMMUN2132LT1G exhibit hFE of 15 @ 5mA, 10V (compared to 30 @ 10mA, 5V in the main part) and improved saturation voltage (250 mV). PDTA143ET,215 offers superior saturation voltage performance (150 mV) and higher power rating (250 mW). All substitute parts are active in production with ROHS3 compliance and MSL 1 rating.

Compliance Verification:

All substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (Unlimited), ensuring compatibility with standard manufacturing and storage protocols. REACH status is unaffected for all parts.

Frequently Asked Questions (FAQ)

Q: Can DTA143EKAT246 replace DTA143EKA-TP in existing designs?

A: Yes. DTA143EKAT246 maintains identical electrical specifications and SOT-23-3 package footprint compatibility. The primary difference is the supplier device package designation (SMT3 versus SOT-23-3L), which does not affect circuit performance or PCB assembly compatibility.

Q: What is the difference between MMUN2132LT1G and the main part DTA143EKA-TP?

A: MMUN2132LT1G is functionally equivalent with identical core parameters (100 mA Ic, 50 V Vce, 4.7 kOhm internal resistors, SOT-23-3 package). Secondary specification differences include hFE measurement conditions (15 @ 5mA, 10V versus 30 @ 10mA, 5V) and improved saturation voltage (250 mV versus 300 mV). These variations do not prevent substitution in standard switching applications.

Q: Are all substitute parts available in the same package?

A: All substitute parts are housed in SOT-23-3 compatible packages (SOT-23-3, SST3, SMT3, TO-236AB). These designations refer to the same physical footprint and pin configuration, ensuring PCB assembly compatibility without design modification.

Q: Why is PDTA143ET,215 listed as a substitute if it has different saturation voltage?

A: PDTA143ET,215 maintains all critical electrical parameters for pre-biased PNP transistor operation (100 mA Ic, 50 V Vce, 4.7 kOhm internal resistors, 30 @ 10mA, 5V hFE). The lower saturation voltage (150 mV versus 300 mV) represents improved performance characteristics, not a limitation. This part is suitable for applications where the original part was specified.

Q: What is the significance of the different hFE specifications in MMUN2132LT1G?

A: hFE is measured under different bias conditions (5 mA versus 10 mA collector current). Both values fall within the acceptable range for pre-biased transistor operation. The measurement condition difference does not affect circuit functionality in standard switching applications where the transistor operates in saturation or cutoff regions.

Q: Can I use NSVMMUN2132LT1G as a direct replacement for DTA143EKA-TP?

A: Yes. NSVMMUN2132LT1G is electrically and mechanically equivalent to MMUN2132LT1G and maintains all required parameters for substitution. The "NSV" prefix indicates a specific product line designation from onsemi but does not affect compatibility.

Q: Are there any compliance concerns when substituting these parts?

A: No. All substitute parts are ROHS3 compliant and carry MSL 1 (Unlimited) rating, matching the original part. REACH status is unaffected for all alternatives, ensuring regulatory compliance in all markets.

Q: Which substitute part offers the best performance improvement?

A: PDTA143ET,215 provides the lowest saturation voltage (150 mV) and highest power rating (250 mW), representing performance enhancement over the original specification. However, all substitutes are functionally equivalent for standard circuit applications.