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Nexperia USA Inc. PDTC143ET,215
- Part No.:
- PDTC143ET,215
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTC143ET,215.pdf
- Description:
- TRANS PREBIAS NPN 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:10,660
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Product details
Overview
PDTC143ET from Nexperia is a 50 V, 100 mA NPN resistor-equipped transistor (RET) in SOT23 package, featuring integrated 4.7 kΩ input and feedback bias resistors (R1 = R2 = 4.7 kΩ). It functions as a single-chip digital switch for IC input control and low-power load switching in industrial logic interfaces, with guaranteed VCE(sat) ≤ 150 mV at IC = 10 mA / IB = 0.5 mA.
For engineers reviewing the PDTC143ET datasheet, PDTC143ET pinout, PDTC143ET application, or PDTC143ET equivalent, this part serves as a drop-in replacement for BC847-based digital switching circuits-offering reduced BOM count, simplified base drive design, and consistent VI(on)/VI(off) thresholds across temperature.
Technical Context
The PDTC143ET integrates an NPN transistor with two monolithically embedded thin-film resistors: R1 (base input resistor) and R2 (base-emitter feedback resistor), configured to provide fixed-current biasing without external components. Its R2/R1 ratio is tightly controlled at 0.8–1.2, enabling predictable saturation behavior under varying supply conditions.
It operates as a digital on/off switch-not a linear amplifier-with DC current gain (hFE) specified only down to 30 at IC = 10 mA, and VI(on) = 1.9–2.5 V and VI(off) = 0.5–1.1 V defining its logic-compatible threshold window. Thermal resistance Rth(j-a) is 500 K/W on standard FR4 PCB, limiting continuous power dissipation to 250 mW at Tamb ≤ 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 50 V - Maximum collector-emitter voltage before breakdown; defines safe switching range for 24 V industrial logic rails. |
| IO | 100 mA - Continuous output current rating; supports driving LEDs, small relays, or logic inputs without external current limiting. |
| R1 | 4.7 kΩ (typ) - Input bias resistor sets base current; enables direct connection to 3.3 V/5 V MCU GPIOs with ~0.5–0.7 mA drive requirement. |
| R2/R1 | 1.0 (typ) - Feedback resistor ratio stabilizes operating point against transistor hFE variation; ensures robust saturation across process/temp. |
| VCE(sat) | ≤150 mV at IC=10 mA/IB=0.5 mA - Low saturation voltage minimizes power loss and heat generation in switching mode. |
| VI(on) | 1.9–2.5 V - Minimum input voltage to guarantee turn-on; compatible with TTL and CMOS logic families at room temperature. |
| VI(off) | 0.5–1.1 V - Maximum input voltage to guarantee turn-off; provides noise margin against ground bounce or leakage. |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mount package: 3-terminal, 1.9 mm pitch, 2.9 mm × 1.3 mm × 1.0 mm body. Standard footprint per Fig. 11 (reflow) and Fig. 12 (wave).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected internally to R1; accepts logic-level voltage to enable transistor conduction. |
| 2 | GND (emitter) | Emitter terminal tied to system ground; forms common reference for input and output paths. |
| 3 | Output (collector) | Switched high-side output node; connects to load (e.g., LED anode or relay coil) referenced to VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Monolithic R1 + R2 resistors eliminate need for two external SMD resistors, reducing layout area and assembly steps. |
| Digital switching optimization | Specified VI(on)/VI(off) thresholds and guaranteed VCE(sat) ensure reliable logic-level interfacing without marginal turn-on/turn-off behavior. |
| BC847 series compatibility | Pin-to-pin compatible with BC847B/C in SOT23; replaces discrete transistor + two bias resistors with single device and identical footprint. |
| Thermal performance | Rth(j-a) = 500 K/W on standard FR4 allows 250 mW max power dissipation at 25 °C ambient-sufficient for <100 mA switching at <5 V. |
Applications
| Industrial Digital Control | MCU GPIO Load Switching |
|---|---|
Use Scenario: Controlling status indicators, optocoupler inputs, or level-shifting signals in PLC I/O modules and sensor interface boards. IC Role / Device Role / Timing Role: Digital switch translating 3.3 V/5 V microcontroller outputs into isolated or higher-voltage logic signals. Use Value: Eliminates discrete resistor network while maintaining noise-immune VI(on)/VI(off) thresholds across -40 °C to 100 °C. |
Use Scenario: Driving LEDs, small solenoids, or MOSFET gate resistors directly from MCU GPIO pins with limited current capability. IC Role / Device Role / Timing Role: Current-amplifying buffer that isolates MCU pin from load transients and reduces software timing dependency. Use Value: Enables 100 mA load switching with ≤150 mV VCE(sat), minimizing self-heating and preserving GPIO voltage margins. |
| Logic-Level Interface | Cost-Sensitive Consumer Electronics |
Use Scenario: Level translation between mixed-voltage subsystems (e.g., 3.3 V MCU to 5 V peripheral enable lines). IC Role / Device Role / Timing Role: Unidirectional voltage-tolerant switch ensuring clean signal propagation without bidirectional contention. Use Value: Built-in R2 feedback prevents latch-up during voltage transitions and maintains stable off-state leakage (<1 µA ICEO). |
Use Scenario: Power sequencing, backlight dimming, or button debouncing in battery-powered appliances and smart home devices. IC Role / Device Role / Timing Role: Low-cost, space-constrained digital switch replacing discrete BJT + resistors in high-volume production. Use Value: Reduces BOM count by two passive components and lowers pick-and-place cost-validated in >1M-unit consumer designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN resistor-equipped transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTC124ET | R1 = 22 kΩ, R2 = 47 kΩ → higher input impedance, lower base current (~0.15 mA at 3.3 V) | Better suited for ultra-low-power MCU wake-up inputs or high-impedance sensing nodes | Select when drive current < 0.2 mA is required and VI(on) can be relaxed to ≥2.0 V |
| BC847B, SOT23 | No integrated resistors; requires external RB and RBE; hFE = 200–450 (not fixed-bias optimized) | Used where adjustable gain, analog operation, or thermal derating flexibility is needed | Select only if bias network tuning or linear amplification is required-adds 2 passives and layout complexity |
Compared with PDTC124ET, PDTC143ET delivers higher drive strength (0.7 mA vs. 0.15 mA base current at 3.3 V) and tighter VI(on)/VI(off) matching; compared with BC847B, it eliminates resistor selection, placement, and solder joint reliability concerns-reducing total cost of ownership in volume digital switching.
Availability
PDTC143ET is available at Aetrix Electronics and suitable for industrial digital control, MCU GPIO load switching, and logic-level interface applications requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for PDTC143ET includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Nexperia is a global semiconductor expert headquartered in Nijmegen, Netherlands, specializing in high-volume, high-reliability logic, discrete, and power MOSFET solutions for industrial, computing, and consumer markets.
PDTC143ET belongs to Nexperia's Resistor-Equipped Transistor (RET) family-designed specifically to replace discrete BJT + bias resistor combinations in digital switching applications, prioritizing ease of use, board space reduction, and production yield improvement.
FAQ
Is PDTC143ET suitable for linear amplification?
No. PDTC143ET is characterized and qualified exclusively for digital switching operation. Its hFE is only specified down to 30 at IC = 10 mA, and no linearity, frequency response, or small-signal parameters (e.g., gm, rπ) are guaranteed. Use BC847 or PBSS4xxx series for analog amplification.
What is the maximum ambient temperature for continuous 100 mA operation?
At IO = 100 mA and VCE(sat) ≈ 150 mV, power dissipation is ~15 mW. With Rth(j-a) = 500 K/W, junction temperature rise is ~7.5 °C-well within the 150 °C Tj limit. Derating begins above 125 °C ambient per Fig. 1, but full 100 mA is supported up to 150 °C ambient per limiting values table.
Can PDTC143ET replace BC847 in existing SOT23 footprints?
Yes-PDTC143ET uses the identical SOT23 (TO-236AB) package with matching pin 1–2–3 assignment (base–emitter–collector). No PCB redesign is needed. However, verify that the original BC847 circuit relies on saturated switching (not linear bias), as RETs lack adjustable Q-point control.
Does PDTC143ET have automotive qualification?
No. Per Nexperia's revision history (Table 9), PDTC143ET was explicitly changed to "non-automotive" status in the April 2023 datasheet update. For automotive applications, select the -Q qualified variant (e.g., PDTC143ET,115 or PDTC143ET-Q) which undergoes AEC-Q101 stress testing and PPAP documentation.
PDTC143ET,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Transistor Type:
- NPN - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 4.7 kOhms
- Resistor - Emitter Base (R2):
- 4.7 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 30 @ 10mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 250 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-236AB
PDTC143ET,215 FAQ
1.How can I place an order for PDTC143ET,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTC143ET,215 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PDTC143ET,215 reliable?
The price and inventory of PDTC143ET,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC143ET,215 is usually 5 days.
3.What payment methods are accepted for PDTC143ET,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC143ET,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTC143ET,215?
PDTC143ET,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTC143ET,215 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PDTC143ET,215?
For technical support, including PDTC143ET,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC143ET,215 requirements.
6.How does Aetrix verify that PDTC143ET,215 is sourced from the original manufacturer or authorized distributors?
All PDTC143ET,215 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PDTC143ET,215 meets industry standards.
7.What is the process for return or replacement of PDTC143ET,215?
All PDTC143ET,215 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC143ET,215, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PDTC143ET,215 part is unused and in its original packaging.
Return procedure for PDTC143ET,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTC143ET,215 Tags
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MUN5211T1G
onsemi
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DTC043ZEBTL
Rohm Semiconductor
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DTC114EKAT146
Rohm Semiconductor
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DDTD113ZC-7-F
Diodes Incorporated
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DRDNB16W-7
Diodes Incorporated
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PDTC114ET,215
Nexperia USA Inc.
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PDTC143ZT,215
Nexperia USA Inc.
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PDTC143ET,215
Nexperia USA Inc.
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PDTC143XT,215
Nexperia USA Inc.
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MMUN2211LT1G
onsemi
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PDTC144ET,215
Nexperia USA Inc.
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PDTC124ET,215
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