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

Nexperia USA Inc. PIMC31-QX

Name: PIMC31-QX
Brand: Nexperia USA Inc.
SKU: PIMC31-QX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PIMC31-QX

Manufacturer:: Nexperia USA Inc.

Category:: Bipolar Transistor Arrays, Pre-Biased

Package:: SC-74, SOT-457

Datasheet:: PIMC31-QX.pdf

Description:: PIMC31-Q/SOT457/SC-74

Quantity:: RFQ Add To RFQ list

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Inventory:4,457

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Product details

Overview

PIMC31-QX from Nexperia is a 500 mA, 50 V NPN/PNP double resistor-equipped transistor (RET) in SOT457 (TSOP6) package, integrating R1 = 1 kΩ and R2 = 10 kΩ bias resistors per transistor pair. It serves as a dual-channel load switch with built-in base drive conditioning for automotive digital control circuits, supporting bidirectional switching of resistive and inductive loads up to 500 mA per channel at ≤50 V.

For engineers reviewing the PIMC31-QX datasheet, PIMC31-QX pinout, PIMC31-QX application, or PIMC31-QX equivalent, key selection criteria include verified AEC-Q101 qualification, per-transistor V_CEO = 50 V and I_O = 500 mA ratings, R2/R1 ratio of 10 ±10%, thermal resistance R_th(j-a) = 298 K/W (per device), and TSOP6 pin-compatible layout for space-constrained PCBs.

Technical Context

This dual RET integrates one NPN (TR1) and one PNP (TR2) transistor sharing no internal connection-each with dedicated emitter-ground pins (GND1, GND2), base-input pins (I1, I2), and collector-output pins (O1, O2). Bias resistors R1 and R2 are connected between base and emitter on each transistor, enabling direct logic-level drive without external components.

It operates under AEC-Q101 stress testing conditions (T_j ≤ 150 °C, T_amb = −55 to +150 °C), with guaranteed V_I(on) ≤ 1.4 V (TR1) and ≤ −1.4 V (TR2) at I_C = 20 mA, and V_CE(sat) ≤ 300 mV at I_C/I_B = 20, ensuring low-loss switching in 12 V automotive systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	50 V - Maximum safe collector-emitter voltage for both TR1 (NPN) and TR2 (PNP) under open-base condition
I_O	500 mA - Continuous output current per transistor, enabling direct drive of solenoids, LEDs, and small relays
R1	1 kΩ ±30% - Input bias resistor from base to emitter on each transistor, setting base current for logic-compatible turn-on
R2/R1	10 ±10% - Ratio defining feedback resistor network; ensures stable DC bias and predictable h_FE-independent switching threshold
P_tot (per device)	420 mW - Total power dissipation limit at T_amb ≤ 25 °C on FR4 PCB, supporting sustained operation in sealed enclosures
V_I(on)	0.4–1.4 V (TR1), −0.4 to −1.4 V (TR2) - Validated input voltage range for reliable turn-on at I_C = 20 mA, compatible with 3.3 V/5 V microcontrollers
h_FE	70 min - Minimum DC current gain at V_CE = 5 V, I_C = 50 mA, ensuring robust saturation under worst-case temperature and process variation

Pinout & Package

Package: SOT457 (TSOP6), 6-lead surface-mount plastic package with 0.95 mm pitch, 3.0 × 1.7 mm footprint, and exposed pad not present. Designed for reflow and wave soldering per IPC-7095 guidelines.

Pin/Terminal	Circuit Role	Design Meaning
1	GND1	Emiter connection for TR1 (NPN); common reference for I1/O1 circuit path
2	I1	Base input for TR1 (NPN); driven through internal R1–R2 network for self-biased switching
3	O2	Collector output for TR2 (PNP); high-side switching node when GND2 is tied to system ground
4	GND2	Emiter connection for TR2 (PNP); independent reference for I2/O2 path, enabling floating or split-rail use
5	I2	Base input for TR2 (PNP); accepts negative-going logic or inverted control signals
6	O1	Collector output for TR1 (NPN); low-side switching node referenced to GND1

Key Features

Feature	Design Value
Dual complementary RET topology	Single-package integration of matched NPN+PNP with independent bias networks eliminates inter-stage coupling and enables push-pull or H-bridge half-bridge configurations
AEC-Q101 qualification	Validated for automotive underhood applications including engine control modules, body controllers, and lighting drivers per stress test requirements
Reduced BOM count	Eliminates four external bias resistors (two per transistor), cutting component cost and placement time in automated SMT lines
Thermal performance	R_th(j-a) = 298 K/W (per device) on standard FR4 PCB enables >300 mW continuous dissipation without heatsinking in ambient ≤75 °C
Logic-level compatibility	V_I(on) ≤ 1.4 V / ≥ −1.4 V ensures direct interface with 3.3 V MCU GPIOs without level-shifting circuitry

Applications

Automotive Door Module

Industrial PLC Output Stage

Use Scenario: Driving window lift motors and mirror adjustment actuators in 12 V vehicle architectures.

IC Role / Device Role / Timing Role: Dual-channel load switch providing isolated NPN (low-side) and PNP (high-side) control paths for bidirectional motor commutation.

Use Value: Enables compact, AEC-Q101-compliant motor driver stage with <1.4 V logic-compatible inputs and <300 mV saturation drop at 500 mA.

Use Scenario: Solid-state replacement for electromechanical relays in DIN-rail mounted programmable logic controllers.

IC Role / Device Role / Timing Role: Discrete output driver delivering 500 mA sink/source capability per channel with integrated biasing for TTL/CMOS interface.

Use Value: Reduces PCB area by 40% vs discrete transistor + resistor solutions while maintaining industrial-grade temperature range (−40 to +125 °C).

LED Headlamp Dimming

Smart HVAC Actuator Control

Use Scenario: PWM-controlled current regulation for adaptive front-lighting system (AFS) LED arrays in automotive headlamps.

IC Role / Device Role / Timing Role: High-speed switching element handling 500 mA pulsed loads at 1–10 kHz with minimal V_CE(sat) rise during duty cycling.

Use Value: Achieves <300 mV V_CE(sat) at I_C/I_B = 20, limiting conduction loss to <150 mW per channel during 100% duty cycle operation.

Use Scenario: Position control of blend-air and mode doors via stepper-motor or DC-motor actuators in automotive HVAC units.

IC Role / Device Role / Timing Role: Bidirectional H-bridge half-driver managing direction reversal and braking via coordinated NPN/PNP switching.

Use Value: Independent GND1/GND2 pins allow true floating output configuration, eliminating ground-loop interference in multi-actuator systems.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual RET applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
NSVD2C300LT1G	Single-channel 300 mA NPN RET; no PNP complement; R1 = 2.2 kΩ, R2 = 47 kΩ (R2/R1 = 21.4)	Limited to unidirectional low-side switching only; requires external PNP for high-side or push-pull	Select when only NPN functionality is needed and board space allows separate high-side solution
UMH11NF	Dual NPN RET (no PNP); 100 mA rating per channel; R1 = 10 kΩ, R2 = 100 kΩ (R2/R1 = 10)	Lower current capacity and no complementary polarity support; unsuitable for bidirectional motor control	Choose for low-power digital logic buffering where 100 mA suffices and polarity inversion is unnecessary

Compared with NSVD2C300LT1G and UMH11NF, PIMC31-QX uniquely delivers matched 500 mA NPN+PNP switching in one AEC-Q101-qualified package with verified 10:1 R2/R1 ratio and 298 K/W thermal resistance-enabling compact, thermally robust, and polarity-flexible automotive load control without design compromises.

Availability

PIMC31-QX is available at Aetrix Electronics and suitable for automotive body electronics, industrial programmable logic controller outputs, and smart HVAC actuator control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for PIMC31-QX 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, high-reliability discrete, logic, and MOSFET devices for automotive, industrial, and consumer markets.

The PIMC31-QX belongs to Nexperia's AEC-Q101-qualified Resistor-Equipped Transistor (RET) product line, engineered specifically for simplified, space-efficient, and robust digital switching in harsh-environment automotive control units.

FAQ

What is the maximum allowable junction temperature for PIMC31-QX?

The absolute maximum junction temperature (T_j) is 150 °C, validated per IEC 60134 and AEC-Q101 stress testing. Operation above this limit risks permanent parametric shift or failure. Derating begins at T_amb > 25 °C per Fig. 1, with P_tot decreasing linearly to zero at 175 °C ambient on standard FR4 PCB.

Can PIMC31-QX be used in high-frequency PWM applications?

Yes-TR1 (NPN) exhibits C_c = 7 pF and TR2 (PNP) C_c = 11 pF at 1 MHz, supporting clean switching up to 100 kHz with minimal capacitive loading. Saturation delay and storage time are not specified, but typical V_CE(sat) stability across −40 to +100 °C (Figs. 4–5, 9–10) confirms suitability for automotive PWM dimming and motor control.

How does the R2/R1 ratio affect switching behavior?

The R2/R1 = 10 ±10% ratio sets the internal feedback factor that stabilizes base current against h_FE variation. This ensures consistent V_I(on) and V_I(off) thresholds across process and temperature, enabling reliable logic-level interfacing without external trimming-critical for automotive ECU reliability over lifetime.

Is there a recommended PCB layout for thermal management?

Yes-use the reflow footprint in Fig. 14 (sot457_fr): 0.45 mm × 0.55 mm solder pads, 0.7 mm solder mask opening, and 2.4 mm × 0.95 mm overall land pattern. Maintain ≥0.2 mm clearance to adjacent copper and avoid thermal relief on GND1/GND2 pads to maximize heat conduction into inner layers or chassis ground.

PIMC31-QX Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

Package/Case:: SC-74, SOT-457

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: 1 NPN, 1 PNP - Pre-Biased (Dual)

Current - Collector (Ic) (Max):: 500mA

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

Resistor - Base (R1):: 1kOhms

Resistor - Emitter Base (R2):: 10kOhms

DC Current Gain (hFE) (Min) @ Ic, Vce:: 70 @ 50mA, 5V

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 2.5mA, 50mA

Current - Collector Cutoff (Max):: 500nA

Frequency - Transition:: -

Power - Max:: 290mW

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: 6-TSOP

PIMC31-QX FAQ

1.How can I place an order for PIMC31-QX through Aetrix?

Please submit a Request for Quotation (RFQ) for PIMC31-QX 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 PIMC31-QX reliable?

The price and inventory of PIMC31-QX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PIMC31-QX is usually 5 days.

3.What payment methods are accepted for PIMC31-QX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PIMC31-QX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PIMC31-QX?

PIMC31-QX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PIMC31-QX 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 PIMC31-QX?

For technical support, including PIMC31-QX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PIMC31-QX requirements.

6.How does Aetrix verify that PIMC31-QX is sourced from the original manufacturer or authorized distributors?

All PIMC31-QX 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 PIMC31-QX meets industry standards.

7.What is the process for return or replacement of PIMC31-QX?

All PIMC31-QX units undergo pre-shipment inspection (PSI). If there is an issue with PIMC31-QX, 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 PIMC31-QX part is unused and in its original packaging.

Return procedure for PIMC31-QX:

1.Submit a request within 90 days.

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

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