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Nexperia USA Inc. PDTA144ET,235
- Part No.:
- PDTA144ET,235
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
PDTA144ET,235.pdf
- Description:
- TRANS PREBIAS PNP 50V TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,880
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Product details
Overview
PDTA144ET from Nexperia is a PNP resistor-equipped transistor (RET) in SOT23 package, designed for digital switching applications with built-in bias resistors R1 = 47 kΩ and R2 = 47 kΩ, −50 V VCEO rating, −100 mA output current capability, and AEC-Q101 qualification for automotive use.
For engineers reviewing the PDTA144ET datasheet, PDTA144ET pinout, PDTA144ET application, or PDTA144ET equivalent, this device serves as a space- and cost-optimized replacement for BC857-series transistors in IC input control and low-power load switching circuits where simplified biasing and reduced component count are critical.
Technical Context
This PNP RET integrates two precision bias resistors (R1 = 47 kΩ, R2/R1 = 1.0 typ.) to eliminate external base resistors, enabling direct logic-level drive. Its −150 mV VCEsat at IC = −10 mA / IB = −0.5 mA ensures low conduction loss in saturated switching.
The device operates across −65 °C to +150 °C ambient, supports reflow-only soldering per JEDEC J-STD-020, and delivers 180 MHz fT at IC = −10 mA - sufficient for high-speed digital interface buffering and signal conditioning up to ~10 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V: Maximum collector-emitter voltage before breakdown; enables use in 24 V automotive supply rails with margin. |
| IO | −100 mA: Continuous output current capability; supports driving LED indicators, small relays, or logic inputs. |
| R1 | 47 kΩ ±28%: Integrated input bias resistor; eliminates external component and reduces PCB footprint by ~2 mm². |
| VCEsat | −150 mV max at IC = −10 mA / IB = −0.5 mA: Low saturation voltage minimizes power loss and self-heating during on-state operation. |
| fT | 180 MHz typ. at VCE = −5 V / IC = −10 mA: Supports fast digital switching with rise/fall times under 2 ns in typical configurations. |
| VI(on) | −1.6 V typ. at VCE = −0.3 V / IC = −2 mA: Confirms reliable turn-on with standard 3.3 V or 5 V CMOS/TTL logic outputs. |
| AEC-Q101 | Qualified: Meets stress test requirements for automotive discrete semiconductors, including temperature cycling and HTRB. |
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 footprint per Fig 18.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Input (base) | Connected internally to R1; accepts logic-level drive directly without external resistor. |
| 2 | GND (emitter) | Emitter tied to system ground; provides common reference for bias network and load return path. |
| 3 | Output (collector) | Switched high-side output node; sinks current from load connected between VCC and pin 3. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in bias resistors | R1 = 47 kΩ, R2 = 47 kΩ (R2/R1 = 1.0 typ.); removes need for two external resistors and associated layout area. |
| AEC-Q101 qualification | Validated for automotive applications including engine control modules and body electronics; supports 15-year lifecycle planning. |
| Low VCEsat | −150 mV max ensures <15 mW conduction loss at −100 mA, reducing thermal stress in dense PCB layouts. |
| Small SOT23 footprint | 1.9 × 1.1 mm outline enables placement in space-constrained modules such as ADAS sensor nodes and infotainment controllers. |
| High fT | 180 MHz transition frequency allows stable operation in 1–10 MHz clocked digital interfaces without oscillation risk. |
Applications
| Automotive LED Indicator Control | Industrial PLC Input Buffering |
|---|---|
Use Scenario: Driving 12 V LED status indicators in dashboard clusters and door modules. IC Role / Device Role / Timing Role: PNP switch sinking current from LED anode to ground; operates in DC on/off mode with <1 µs response. Use Value: Eliminates two external resistors per channel, reducing BOM cost by $0.008/unit and saving 1.2 mm² PCB area per indicator. |
Use Scenario: Level-shifting and isolating 24 V field signals into 3.3 V microcontroller GPIOs. IC Role / Device Role / Timing Role: Digital input conditioner; converts industrial voltage thresholds to clean logic levels with hysteresis-free switching. Use Value: Built-in R1/R2 ensures consistent VI(on)/VI(off) over temperature (−40 °C to +105 °C), avoiding calibration drift in factory automation systems. |
| Consumer Appliance Power Sequencing | Medical Device Signal Isolation |
Use Scenario: Enabling/disabling auxiliary power rails in smart home hubs and HVAC controllers. IC Role / Device Role / Timing Role: Low-side enable switch controlling PMIC enable pins; driven by MCU GPIO. Use Value: −100 mA IO rating supports simultaneous activation of multiple downstream regulators; AEC-Q101 grade adds reliability margin beyond consumer requirements. |
Use Scenario: Galvanically isolated signal coupling between patient-monitoring sensors and main controller board. IC Role / Device Role / Timing Role: Digital isolator front-end stage; converts optocoupler output to clean CMOS-compatible levels. Use Value: 180 MHz fT and <2 ns propagation delay ensure accurate timing capture of ECG/SpO₂ pulse edges without jitter accumulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PNP resistor-equipped transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PDTC144ET | NPN complement; same R1/R2 values, SOT23 package, identical footprint but opposite polarity. | Requires inverted logic drive and load connection on emitter side; unsuitable for high-side switching. | Select when circuit topology mandates NPN configuration or existing design uses PDTC144ET footprints. |
| BC857BW | Discrete PNP BJT without integrated resistors; requires two external 47 kΩ base resistors. | Higher component count and layout complexity; no AEC-Q101 qualification. | Choose only if legacy designs mandate pin-for-pin compatibility with BC857 series and AEC-Q101 is not required. |
Compared with PDTC144ET, PDTA144ET enables high-side load switching with standard logic drive, while versus BC857BW it reduces bill-of-materials cost and improves thermal stability via monolithic resistor matching - critical for automotive and industrial deployments requiring long-term reliability.
Availability
PDTA144ET is available at Aetrix Electronics and suitable for automotive LED control, industrial PLC input buffering, consumer appliance power sequencing, and medical device signal isolation requiring stable component supply and AEC-Q101 compliance.
Supply support for PDTA144ET 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 essential efficiency technologies, delivering high-performance, reliable discrete, logic, and MOSFET solutions for automotive, industrial, and consumer markets.
The PDTA144ET belongs to Nexperia's resistor-equipped transistor (RET) product line, engineered specifically to reduce component count and simplify digital interface design in space- and cost-sensitive applications.
FAQ
What is the maximum operating temperature for PDTA144ET?
The PDTA144ET has a junction temperature limit of 150 °C and an ambient operating range of −65 °C to +150 °C. Its thermal resistance Rth(j-a) is 500 K/W on FR4 PCB with standard footprint, allowing continuous −100 mA operation up to +85 °C ambient with proper copper pour.
Can PDTA144ET replace BC857 in existing designs?
Yes - PDTA144ET is a drop-in functional replacement for BC857 in digital switching roles, offering identical SOT23 footprint and compatible electrical behavior. It eliminates two external base resistors, simplifies layout, and adds AEC-Q101 qualification, though polarity remains PNP and pin 1/2/3 mapping matches BC857.
Is reflow soldering mandatory for PDTA144ET?
Yes. Nexperia specifies reflow soldering as the only recommended method for PDTA144ET. Wave soldering is not qualified; the device's SOT23 package and internal resistor structure require precise thermal profiling per JEDEC J-STD-020 to avoid delamination or parameter shift.
What is the typical input threshold voltage for turning on PDTA144ET?
The typical on-state input voltage VI(on) is −1.6 V at VCE = −0.3 V and IC = −2 mA. This means a logic-high signal ≥ −1.6 V applied to pin 1 reliably saturates the transistor, making it compatible with 3.3 V and 5 V CMOS outputs without level shifting.
PDTA144ET,235 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:
- PNP - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 47 kOhms
- Resistor - Emitter Base (R2):
- 47 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 80 @ 5mA, 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
PDTA144ET,235 FAQ
1.How can I place an order for PDTA144ET,235 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTA144ET,235 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 PDTA144ET,235 reliable?
The price and inventory of PDTA144ET,235 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA144ET,235 is usually 5 days.
3.What payment methods are accepted for PDTA144ET,235?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA144ET,235 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTA144ET,235?
PDTA144ET,235 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTA144ET,235 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 PDTA144ET,235?
For technical support, including PDTA144ET,235 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA144ET,235 requirements.
6.How does Aetrix verify that PDTA144ET,235 is sourced from the original manufacturer or authorized distributors?
All PDTA144ET,235 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 PDTA144ET,235 meets industry standards.
7.What is the process for return or replacement of PDTA144ET,235?
All PDTA144ET,235 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA144ET,235, 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 PDTA144ET,235 part is unused and in its original packaging.
Return procedure for PDTA144ET,235:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PDTA144ET,235 Tags
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