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NXP Semiconductors PDTA124ES,126
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- Part No.:
- PDTA124ES,126
- Manufacturer:
- NXP Semiconductors
- Category:
- Single, Pre-Biased Bipolar Transistors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
PDTA124ES,126.pdf
- Description:
- TRANS PREBIAS PNP 50V TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,447
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Product details
Overview
PDTA124ES from NXP Semiconductors is a PNP resistor-equipped transistor with integrated 22 kΩ base bias resistors (R1 and R2), designed for general-purpose switching in through-hole applications. It features −50 V VCEO, −100 mA IO, and TO-92 (SOT54) packaging, enabling compact inverter and interface circuit implementation in industrial control modules.
For engineers reviewing the PDTA124ES datasheet, PDTA124ES pinout, PDTA124ES application, or PDTA124ES equivalent, key selection criteria include its built-in bias network simplifying drive circuitry, −50 V breakdown rating for robustness in 24 V systems, thermal resistance of 250 K/W in free air, and compatibility with standard through-hole PCB assembly processes.
Technical Context
The PDTA124ES integrates two precision-matched 22 kΩ resistors (R1 = R2 = 22 kΩ, tolerance ±30%) directly into a monolithic PNP bipolar structure, eliminating external bias components. Its internal resistor ratio (R2/R1 = 1.0 ±0.2) ensures stable current gain across temperature and process variation.
It operates as a digital switch with defined input thresholds: Vi(on) = −1.7 V (typ.) at IC = −5 mA and VCE = −0.3 V, and Vi(off) = −1.1 V (typ.) at IC = −100 μA and VCE = −5 V - enabling reliable logic-level interfacing with TTL and CMOS outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | −50 V maximum collector-emitter voltage: supports operation in 24 V industrial bus systems with safety margin. |
| IO | −100 mA DC output current: sufficient to drive LED indicators, small relays, or logic inputs without external amplification. |
| R1 / R2 | 22 kΩ ±30% integrated bias resistors: eliminates two external SMD resistors and reduces BOM count by 2 parts. |
| VCE(sat) | −150 mV max at IC = −10 mA, IB = −0.5 mA: low saturation voltage minimizes power loss and self-heating in switching mode. |
| Ptot | 500 mW total power dissipation at Tamb ≤ 25 °C: enables continuous operation in ambient temperatures up to +70 °C with minimal heatsinking. |
| Rth j-a | 250 K/W junction-to-ambient thermal resistance: defines temperature rise of 125 °C at full 500 mW dissipation in free air. |
Pinout & Package
Package: Plastic through-hole single-ended leaded package (TO-92 / SOT54), 3-lead, body dimensions 4.8 × 4.2 × 14.5 mm, compatible with standard axial insertion and wave soldering.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Base | Internal connection to R1 and R2 network; accepts logic-level input without external pull-up/down. |
| 2 | Collector | High-side switching node; connects to load supply rail (e.g., +24 V) when used in common-emitter configuration. |
| 3 | Emitter | Common reference node tied to system ground; provides return path for switched load current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bias network | Monolithic 22 kΩ R1–R2 resistor pair eliminates discrete bias components and improves layout reliability. |
| Logic-compatible input threshold | Vi(on) = −1.7 V (typ.) ensures clean turn-on with standard 5 V TTL or 3.3 V CMOS outputs. |
| Low saturation voltage | VCE(sat) ≤ −150 mV enables <15 mW conduction loss at 100 mA, reducing thermal stress in dense layouts. |
| Through-hole mechanical robustness | SOT54 (TO-92) package withstands vibration and mechanical shock better than SMT variants in industrial enclosures. |
Applications
| Industrial Sensor Interface | LED Status Indicator Driver |
|---|---|
Use Scenario: Level-shifting and current amplification for NPN open-collector sensor outputs feeding PLC input cards. IC Role / Device Role / Timing Role: PNP switch translating 0–5 V logic signals to 24 V sink-compatible inputs with galvanic isolation via optocoupler bypass. Use Value: Eliminates need for external base resistors and reduces component count per channel by two, lowering assembly cost and board area. | Use Scenario: Driving multiple panel-mount LEDs from microcontroller GPIO pins with limited current sourcing capability. IC Role / Device Role / Timing Role: High-side current sink enabling common-anode LED configurations with precise on/off control. Use Value: −100 mA IO rating supports up to three 20 mA LEDs in parallel without derating, while VCE(sat) ≤ −150 mV limits LED forward voltage drop impact. |
| Relay Coil Driver | Level Translation in Inverter Circuits |
Use Scenario: Switching 24 V DC relay coils rated ≤ 100 mA in HVAC control panels. IC Role / Device Role / Timing Role: Low-loss PNP driver replacing discrete transistor + resistor combinations in legacy relay interface designs. Use Value: Integrated R1/R2 ensures consistent base current across temperature, preventing relay chatter during ambient swings from −40 °C to +85 °C. | Use Scenario: Bidirectional signal inversion between 3.3 V MCU peripherals and 5 V legacy logic subsystems. IC Role / Device Role / Timing Role: Fast-switching inverter stage with sub-μs propagation delay due to optimized junction capacitance (Cc ≤ 3 pF). Use Value: Cc = 3 pF and hFE ≥ 60 at −5 mA enable clean square-wave inversion up to 1 MHz without waveform distortion. |
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 |
|---|---|---|---|
| PDTC124ES | NPN complement with identical R1/R2 values, same SOT54 package and pinout (pin 1=base, pin 2=collector, pin 3=emitter). | Requires inverted logic drive and reversed supply polarity; suitable only where NPN topology is preferred. | Select PDTC124ES when interfacing with active-high control signals or when sourcing current from VCC is required. |
| NSV124ES | Same function and package but manufactured by ON Semiconductor; R1/R2 = 22 kΩ, VCEO = −50 V, IO = −100 mA, but hFE min = 50 vs. 60 for PDTA124ES. | Marginally lower DC gain may require verification in high-temperature or low-IB drive scenarios. | Choose NSV124ES for dual-sourcing continuity where NXP supply constraints exist; validate hFE margin in final design. |
Compared with PDTC124ES and NSV124ES, the PDTA124ES offers higher guaranteed hFE (60 min), making it preferable for marginal drive conditions, while retaining identical footprint and bias network performance - critical for drop-in replacement in existing TO-92-based industrial PCBs.
Availability
PDTA124ES is available at Aetrix Electronics and suitable for industrial sensor interfaces, LED status indicator drivers, relay coil drivers, and level translation in inverter circuits requiring stable component supply and long-term obsolescence management.
Supply support for PDTA124ES 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The PDTA124ES belongs to NXP's resistor-equipped transistor (RET) product line, engineered to reduce component count and improve reliability in cost-sensitive industrial control and interface circuits.
FAQ
What is the pin configuration of the PDTA124ES?
The PDTA124ES uses a TO-92 (SOT54) package with standardized pinout: Pin 1 is Base, Pin 2 is Collector, and Pin 3 is Emitter. This matches JEDEC TO-92 outline and is confirmed in NXP's official datasheet Figure 3 "Simplified outline, symbol and pinning". The internal resistor network connects between Base and both Collector and Emitter terminals as specified in the Quick Reference Data section.
Does the PDTA124ES support reflow soldering?
No - the PDTA124ES is a through-hole device in SOT54 (TO-92) packaging and is not rated for reflow soldering. Per NXP's Limiting Values table, only wave soldering is recommended for this variant. Reflow is explicitly permitted only for surface-mount variants like PDTA124EE (SOT416) and PDTA124EM (SOT883), as noted in Footnote 2 of the Thermal Characteristics section.
What is the typical input-on voltage (Vi(on)) for the PDTA124ES?
The typical input-on voltage Vi(on) for the PDTA124ES is −1.7 V at IC = −5 mA and VCE = −0.3 V, with a guaranteed range of −2.5 V to −1.7 V. This value is specified in the Characteristics table on page 5 of the NXP datasheet and defines the minimum negative input voltage required to reliably saturate the transistor in switching applications.
Can the PDTA124ES replace a standard PNP transistor like BC807 without redesign?
No - the PDTA124ES cannot serve as a direct replacement for a bare PNP transistor such as BC807 without circuit modification. Its integrated 22 kΩ bias resistors alter the base drive requirements: applying the same base voltage to PDTA124ES will result in different current gain and switching behavior. External resistor removal or drive logic adjustment is required to maintain functional equivalence.
What is the maximum operating junction temperature of the PDTA124ES?
The maximum operating junction temperature (Tj) of the PDTA124ES is 150 °C, as specified in the Limiting Values table on page 4 of the NXP datasheet. This rating applies under all operating conditions and must be respected to ensure long-term reliability; actual junction temperature depends on ambient temperature, power dissipation, and PCB thermal design.
PDTA124ES,126 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Tape & Box (TB)
- Product Status:
- Obsolete
- Transistor Type:
- PNP - Pre-Biased
- Current - Collector (Ic) (Max):
- 100 mA
- Voltage - Collector Emitter Breakdown (Max):
- 50 V
- Resistor - Base (R1):
- 22 kOhms
- Resistor - Emitter Base (R2):
- 22 kOhms
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 60 @ 5mA, 5V
- Vce Saturation (Max) @ Ib, Ic:
- 150mV @ 500µA, 10mA
- Current - Collector Cutoff (Max):
- 1µA
- Frequency - Transition:
- -
- Power - Max:
- 500 mW
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
PDTA124ES,126 FAQ
1.How can I place an order for PDTA124ES,126 through Aetrix?
Please submit a Request for Quotation (RFQ) for PDTA124ES,126 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 PDTA124ES,126 reliable?
The price and inventory of PDTA124ES,126 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PDTA124ES,126 is usually 5 days.
3.What payment methods are accepted for PDTA124ES,126?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PDTA124ES,126 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PDTA124ES,126?
PDTA124ES,126 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PDTA124ES,126 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 PDTA124ES,126?
For technical support, including PDTA124ES,126 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PDTA124ES,126 requirements.
6.How does Aetrix verify that PDTA124ES,126 is sourced from the original manufacturer or authorized distributors?
All PDTA124ES,126 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 PDTA124ES,126 meets industry standards.
7.What is the process for return or replacement of PDTA124ES,126?
All PDTA124ES,126 units undergo pre-shipment inspection (PSI). If there is an issue with PDTA124ES,126, 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 PDTA124ES,126 part is unused and in its original packaging.
Return procedure for PDTA124ES,126:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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