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Equivalent & Substitute Parts for DTA143TUAT106 – Rohm Semiconductor
Part Overview
DTA143TUAT106 is a pre-biased PNP bipolar junction transistor (BJT) from Rohm Semiconductor, designed for surface-mount applications in the UMT3 (SC-70, SOT-323) package. It features a 50 V collector-emitter breakdown voltage, supports up to 100 mA collector current, and is suited for compact circuit layouts requiring built-in bias resistors. The part is active and available, but finding alternative models is occasionally required to address supply chain continuity, multi-vendor sourcing strategies, and inventory optimization for electronic design and production.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | DTA143TUAT106 |
| Transistor Type | PNP - Pre-Biased |
| Voltage - Collector Emitter Breakdown (Max) | 50 V |
| Current - Collector (Ic) (Max) | 100 mA |
| Resistor - Base (R1) | 4.7 kOhms |
| DC Current Gain (hFE) (Min) @ Ic, Vce | 100 @ 1mA, 5V |
| Vce Saturation (Max) @ Ib, Ic | 300mV @ 250µA, 5mA |
| Current - Collector Cutoff (Max) (ICBO) | 500nA |
| Frequency - Transition | 250 MHz |
| Power - Max | 200 mW |
| Mounting Type | Surface Mount |
| Package / Case | SC-70, SOT-323 |
| RoHS Status | ROHS3 Compliant |
| REACH Status | REACH Unaffected |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| Part Status | Active |
Substitute Part Grouping Explanation
Substitution logic is strictly based on the following parameters: transistor type (PNP, pre-biased), maximum collector-emitter breakdown voltage, maximum collector current, base resistor value, DC current gain (hFE), saturation voltage, collector cutoff current, transition frequency, total power rating, mounting type, package/case, and compliance statuses (RoHS, REACH, MSL). Only parts matching or closely aligning with these parameters are listed, ensuring mechanical and electrical compatibility for direct replacement in circuit assemblies.
Parameter Comparison
| Parameter | DTA143TUAT106 (Rohm) |
DTA143TU3T106 (Rohm) |
MUN5116T1G (onsemi) |
DDTA113TUA-7-F (Diodes Inc.) |
DDTA114TUA-7-F (Diodes Inc.) |
DDTA115TUA-7-F (Diodes Inc.) |
DDTA124TUA-7-F (Diodes Inc.) |
PDTA143TU,115 (Nexperia) |
RN2310,LF (Toshiba) |
RN2311(TE85L,F) (Toshiba) |
RN2312(TE85L,F) (Toshiba) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Transistor Type | PNP Pre-Biased | PNP Pre-Biased | PNP Pre-Biased | PNP Pre-Biased | PNP Pre-Biased | PNP Pre-Biased | PNP Pre-Biased | PNP Pre-Biased | PNP Pre-Biased | PNP Pre-Biased | PNP Pre-Biased |
| VCE(Max) | 50 V | 50 V | 50 V | 50 V | 50 V | 50 V | 50 V | 50 V | 50 V | 50 V | 50 V |
| IC(Max) | 100 mA | 100 mA | 100 mA | 100 mA | 100 mA | 100 mA | 100 mA | 100 mA | 100 mA | 100 mA | 100 mA |
| R1 (Base) | 4.7 kΩ | 4.7 kΩ | 4.7 kΩ | 1 kΩ | 10 kΩ | 100 kΩ | 22 kΩ | 4.7 kΩ | 4.7 kΩ | 10 kΩ | 22 kΩ |
| hFE (Min) | 100 @ 1mA, 5V | 100 @ 1mA, 5V | 160 @ 5mA, 10V | 100 @ 1mA, 5V | 100 @ 1mA, 5V | 100 @ 1mA, 5V | 100 @ 1mA, 5V | 200 @ 1mA, 5V | 120 @ 1mA, 5V | 120 @ 1mA, 5V | 120 @ 1mA, 5V |
| VCE Sat (Max) | 300mV @ 250µA, 5mA | 300mV @ 250µA, 5mA | 250mV @ 1mA, 10mA | 300mV @ 1mA, 10mA | 300mV @ 100µA, 1mA | 300mV @ 100µA, 1mA | 300mV @ 500µA, 5mA | 150mV @ 250µA, 5mA | 300mV @ 250µA, 5mA | 300mV @ 250µA, 5mA | 300mV @ 250µA, 5mA |
| ICBO (Max) | 500 nA | 500 nA | 500 nA | 500 nA | 500 nA | 500 nA | 500 nA | 1 µA | 100 nA | 100 nA | 100 nA |
| fT (Freq.) | 250 MHz | 250 MHz | 250 MHz | 250 MHz | 250 MHz | 250 MHz | 250 MHz | 200 MHz | 200 MHz | 200 MHz | 200 MHz |
| PTOT (Max) | 200 mW | 200 mW | 202 mW | 200 mW | 200 mW | 200 mW | 200 mW | 200 mW | 100 mW | 100 mW | 100 mW |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package/Case | SC-70, SOT-323 | SC-70, SOT-323 | SC-70, SOT-323 | SC-70, SOT-323 | SC-70, SOT-323 | SC-70, SOT-323 | SC-70, SOT-323 | SC-70, SOT-323 | SC-70, SOT-323 | SC-70, SOT-323 | SC-70, SOT-323 |
| RoHS Status | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | ROHS3 | RoHS | ROHS3 |
| REACH Status | Unaffected | Unaffected | Unaffected | Unaffected | Unaffected | Unaffected | Unaffected | Unaffected | - | - | - |
| MSL | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active | Active |
Engineering Selection Recommendations
Select substitute models that are active, ROHS3 compliant, REACH unaffected, and rated at MSL 1 (Unlimited) for unrestricted moisture sensitivity. All substitute models listed share the category, mounting type, and package/case required for direct compatibility. Only products with matching or close electrical characteristics within specified tolerances should be selected for compliant assembly and documentation needs.
Frequently Asked Questions (FAQ)
Q1: What electrical characteristics are mandatory when substituting DTA143TUAT106?
A1: The substitute transistor must be PNP type, pre-biased configuration, with a collector-emitter breakdown voltage of at least 50 V, collector current rating of 100 mA, and similar base resistor values. Other key factors include DC current gain (hFE), saturation voltage, cutoff currents, transition frequency, and total power rating.
Q2: Is package compatibility critical for substitution?
A2: Yes. Substitute parts must use the same package and case—SC-70 or SOT-323—with the same surface-mount format to maintain mechanical and assembly compatibility.
Q3: Are compliance certifications relevant to selection?
A3: Yes. Only substitutes with ROHS3 compliance, REACH unaffected status, and MSL 1 (Unlimited) are suitable, ensuring legal and reliable use in manufacturing environments.
Q4: Do substitute transistors need identical base resistor values?
A4: Matching the base resistor (R1) is important for design preservation. Only models with comparable or listed R1 values are included, as variations will affect biasing conditions.
Q5: Can substitutes with lower power ratings be used?
A5: Substitute selection must maintain or closely match the total power rating (typically 200 mW), unless the design permits otherwise as a documented engineering decision.
Q6: Why are obsolete parts included in the comparison?
A6: Obsolete status is indicated for completeness but such parts should not be used for current or future designs requiring active sourcing and compliance.
Q7: Is it necessary to verify moisture sensitivity and environmental status?
A7: Moisture Sensitivity Level (MSL) 1 (Unlimited) and environmental compliance are mandatory criteria for reliable, unrestricted assembly and storage.
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