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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single, Pre-Biased Bipolar Transistors

Nexperia USA Inc. PDTC114ET/DG/B2,21

Name: PDTC114ET/DG/B2,21
Brand: Nexperia USA Inc.
SKU: PDTC114ET/DG/B2,21
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PDTC114ET/DG/B2,21

Manufacturer:: Nexperia USA Inc.

Category:: Single, Pre-Biased Bipolar Transistors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: PDTC114ET/DG/B2,21.pdf

Description:: TRANS PREBIAS NPN 50V TO236AB

Quantity:: RFQ Add To RFQ list

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Inventory:5,113

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Product details

Overview

PDTC114ET/DG/B2,21 from Nexperia is an NPN resistor-equipped transistor (RET) in SOT23 package, designed as a digital switch with integrated 10 kΩ input bias resistor (R1) and 10 kΩ emitter feedback resistor (R2), delivering 100 mA output current and 50 V collector-emitter breakdown voltage for automotive and industrial logic-level interface applications.

For engineers reviewing the PDTC114ET/DG/B2,21 datasheet, PDTC114ET/DG/B2,21 pinout, PDTC114ET/DG/B2,21 application, or PDTC114ET/DG/B2,21 equivalent, this device serves as a drop-in replacement for BC847-based switching circuits where reduced component count, simplified PCB layout, and AEC-Q101 qualification are required.

Technical Context

This RET integrates a monolithic NPN transistor with two precision laser-trimmed on-chip resistors (R1 = 10 kΩ, R2/R1 = 1.0 typ), enabling single-resistor drive from microcontroller GPIOs without external bias networks. It operates with VI(on) = 1.8 V min at IC = 10 mA and VI(off) = 1.1 V typ at IC = 100 μA, ensuring robust noise immunity in noisy automotive environments.

The device features a maximum VCE(sat) of 150 mV at IC = 10 mA/IB = 0.5 mA, junction temperature up to 150 °C, and thermal resistance Rth(j-a) = 500 K/W on FR4 PCB - confirming suitability for space-constrained, thermally demanding digital control nodes.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum safe collector-emitter voltage under open-base conditions; enables use in 24 V automotive systems with margin.
I_O	100 mA - Continuous output current capability; sufficient to drive LEDs, small relays, or logic inputs directly.
R1	10 kΩ (7–13 kΩ) - Integrated base input resistor; eliminates need for external pull-up/pull-down and reduces BOM count.
R2/R1	1.0 (0.8–1.2) - Matched internal resistor ratio; ensures stable current gain and predictable turn-on/off thresholds.
V_CE(sat)	150 mV max at IC = 10 mA - Low saturation voltage minimizes power loss and self-heating during switching.
f_T	230 MHz - Transition frequency of the embedded transistor; supports fast digital switching up to ~10 MHz.
AEC-Q101	Qualified - Meets stress test requirements for discrete semiconductors in automotive applications.

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package with 3 leads; 1.9 mm × 1.1 mm × 1.2 mm body dimensions; standard reflow-compatible footprint per Figure 18.

Pin/Terminal	Circuit Role	Design Meaning
1	Input (base)	Connected internally to R1; accepts TTL/CMOS logic-level signals directly without external series resistor.
2	GND (emitter)	Emitter terminal tied to system ground; R2 connects between base and this pin for feedback stabilization.
3	Output (collector)	Switched high-side load node; rated for 50 V and 100 mA continuous; requires external load connection.

Key Features

Feature	Design Value
Integrated bias network	Monolithic R1 + R2 eliminates 2 external resistors, reducing PCB area and assembly cost.
Automotive qualification	AEC-Q101 certified - validated for temperature cycling, HTRB, and ESD per automotive reliability standards.
Low VI(on)/VI(off) hysteresis	VI(on) = 1.8 V min / VI(off) = 1.1 V typ - provides >0.7 V noise margin against supply ripple in 3.3 V systems.
Thermal performance	Rth(j-a) = 500 K/W on FR4 - enables 250 mW power dissipation at 25 °C ambient; derates linearly above 25 °C.
Small-footprint SOT23	1.9 × 1.1 mm outline - compatible with high-density routing and automated placement; no leadless handling complexity.

Applications

LED Driver Interface

Microcontroller GPIO Expander

Use Scenario: Driving 20 mA indicator LEDs from 3.3 V MCU I/O pins in automotive instrument clusters.

IC Role / Device Role / Timing Role: Digital switch translating logic-high signal into saturated collector current path to LED anode.

Use Value: Eliminates need for discrete base resistor and pull-down; VI(on) ≤ 1.8 V ensures reliable turn-on even with MCU V_OH degradation over temperature.

Use Scenario: Adding low-cost, board-level digital outputs to resource-constrained microcontrollers in industrial PLC modules.

IC Role / Device Role / Timing Role: Level-shifting and current-boosting buffer for driving optocoupler inputs or relay coils.

Use Value: 100 mA output supports direct coil drive (e.g., 5 V/40 Ω relay); built-in R2 prevents latch-up during transient noise events.

Automotive Sensor Signal Conditioning

Industrial Logic-Level Translation

Use Scenario: Converting open-collector sensor outputs (e.g., Hall effect switches) to clean CMOS-compatible signals in engine control units.

IC Role / Device Role / Timing Role: Active pull-up switch with defined VI(off) threshold to reject sub-1.1 V noise while responding to >1.8 V valid signals.

Use Value: R2/R1 = 1.0 ratio ensures consistent hysteresis across production lot; AEC-Q101 rating guarantees operation at 125 °C junction temperature.

Use Scenario: Interfacing 5 V legacy logic to 3.3 V FPGA I/O banks in factory automation controllers.

IC Role / Device Role / Timing Role: Unidirectional level translator using emitter-follower configuration with grounded emitter.

Use Value: V_CE(sat) ≤ 150 mV maintains <0.2 V logic-low margin at 10 mA sink; SOT23 allows placement adjacent to FPGA BGA escape routing.

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
BC847B,215	Discrete NPN BJT requiring external 10 kΩ base resistor; no integrated R2; h_FE = 200–450 vs. fixed RET gain profile.	Lacks built-in noise immunity and VI(off) threshold; requires additional PCB real estate and assembly step.	Select when fine-grained gain tuning or higher f_T (>300 MHz) is needed, and design tolerates extra components.
PDTA114ET,215	PNP complement with identical R1/R2 values and SOT23 package; V_ECO = 50 V; VI(on) polarity inverted.	Used for high-side switching or complementary logic stages; not interchangeable without circuit redesign.	Select only for PNP topology needs - e.g., reverse-biased load control or push-pull driver pairs.

Compared with BC847B,215, PDTC114ET/DG/B2,21 reduces bill-of-materials by two resistors and improves noise rejection via R2 feedback; compared with PDTA114ET,215, it provides NPN polarity essential for low-side switching and direct MCU output interfacing.

Availability

PDTC114ET/DG/B2,21 is available at Aetrix Electronics and suitable for automotive lighting control, industrial I/O expansion, sensor interface modules, and consumer appliance logic-level switching requiring stable component supply and AEC-Q101 compliance.

Supply support for PDTC114ET/DG/B2,21 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 focused on high-volume, high-reliability logic, discrete, and MOSFET solutions for automotive, industrial, and mobile markets.

PDTC114ET/DG/B2,21 belongs to the PDTC114E series of resistor-equipped transistors - engineered specifically to replace discrete BJT + resistor combinations in cost-sensitive, space-constrained digital switching applications.

FAQ

What is the maximum operating temperature for PDTC114ET/DG/B2,21?

The device has a maximum junction temperature (T_j) of 150 °C and an ambient operating range of −65 °C to +150 °C. Its thermal resistance R_th(j-a) is 500 K/W on FR4 PCB, meaning it dissipates 250 mW at 25 °C ambient before reaching T_j = 150 °C. Derating is linear above 25 °C per Figure 4.

Can PDTC114ET/DG/B2,21 replace BC847 in existing designs without layout changes?

Yes - it uses the same SOT23 (TO-236AB) footprint and pinout (pin 1 = base, pin 2 = emitter, pin 3 = collector). However, because R1 and R2 are internal, remove the external base resistor and ensure the load connects to pin 3 (collector), not pin 2 (emitter), to maintain correct switching polarity and gain behavior.

Is PDTC114ET/DG/B2,21 suitable for 5 V logic interfacing?

Yes - its VI(on) is specified at 1.8 V min (at IC = 10 mA), well below typical 5 V TTL/CMOS logic-high thresholds (~2.0–3.5 V), and VI(off) is 1.1 V typ, providing >0.9 V noise margin. It reliably switches with 5 V drive while consuming negligible base current due to the 10 kΩ R1.

Does PDTC114ET/DG/B2,21 support wave soldering?

No - the datasheet explicitly states "Reflow soldering is the only recommended soldering method." Wave soldering is not qualified for this part; Figures 19 and 21 show wave footprints only for legacy reference. Use reflow per JEDEC J-STD-020 profile with peak temperature ≤ 260 °C.

PDTC114ET/DG/B2,21 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:: Obsolete

Transistor Type:: NPN - Pre-Biased

Current - Collector (Ic) (Max):: 100 mA

Voltage - Collector Emitter Breakdown (Max):: 50 V

Resistor - Base (R1):: 10 kOhms

Resistor - Emitter Base (R2):: 10 kOhms

DC Current Gain (hFE) (Min) @ Ic, Vce:: 30 @ 5mA, 5V

Vce Saturation (Max) @ Ib, Ic:: 150mV @ 500µA, 10mA

Current - Collector Cutoff (Max):: 1µA

Frequency - Transition:: 230 MHz

Power - Max:: 250 mW

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: TO-236AB

PDTC114ET/DG/B2,21 FAQ

1.How can I place an order for PDTC114ET/DG/B2,21 through Aetrix?

Please submit a Request for Quotation (RFQ) for PDTC114ET/DG/B2,21 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 PDTC114ET/DG/B2,21 reliable?

The price and inventory of PDTC114ET/DG/B2,21 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTC114ET/DG/B2,21 is usually 5 days.

3.What payment methods are accepted for PDTC114ET/DG/B2,21?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTC114ET/DG/B2,21 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PDTC114ET/DG/B2,21?

PDTC114ET/DG/B2,21 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PDTC114ET/DG/B2,21 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 PDTC114ET/DG/B2,21?

For technical support, including PDTC114ET/DG/B2,21 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTC114ET/DG/B2,21 requirements.

6.How does Aetrix verify that PDTC114ET/DG/B2,21 is sourced from the original manufacturer or authorized distributors?

All PDTC114ET/DG/B2,21 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 PDTC114ET/DG/B2,21 meets industry standards.

7.What is the process for return or replacement of PDTC114ET/DG/B2,21?

All PDTC114ET/DG/B2,21 units undergo pre-shipment inspection (PSI). If there is an issue with PDTC114ET/DG/B2,21, 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 PDTC114ET/DG/B2,21 part is unused and in its original packaging.

Return procedure for PDTC114ET/DG/B2,21:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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