DCX114EU-7 Equivalent & Substitute Parts

Part Overview

The DCX114EU-7 is a pre-biased dual bipolar transistor (BJT) combining 1 NPN and 1 PNP transistor in a single 6-TSSOP/SOT-363 surface mount package. This component is designed for applications requiring integrated biasing networks with matched transistor pairs. The DCX114EU-7 is currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Transistor Type	1 NPN, 1 PNP - Pre-Biased (Dual)	—
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	300	mV @ 500µA, 10mA
Current - Collector Cutoff (Max)	500	nA
Frequency - Transition	250	MHz
Power - Max	200	mW
Mounting Type	Surface Mount	—
Package / Case	6-TSSOP, SC-88, SOT-363	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the DCX114EU-7 is determined by the following critical parameters:

Electrical Compatibility Requirements:

Transistor configuration: 1 NPN, 1 PNP - Pre-Biased (Dual)
Maximum collector current: 100 mA minimum
Maximum collector-emitter breakdown voltage: 50 V minimum
Base and emitter-base resistor values: 10 kOhms (primary specification)
DC current gain (hFE): 30 minimum @ 5mA, 5V
Vce saturation: 300 mV maximum @ 500µA, 10mA (primary specification)
Collector cutoff current: 500 nA maximum
Transition frequency: 250 MHz minimum
Power dissipation: 200 mW minimum

Mechanical Compatibility Requirements:

Surface mount packaging only
Package type: 6-TSSOP, SC-88, or SOT-363
Moisture sensitivity level: 1 (Unlimited)

Compliance Requirements:

RoHS3 compliance preferred for new designs
REACH unaffected status

Substitute parts are grouped into three categories: direct manufacturer equivalents (same part number variants), upgraded alternatives (enhanced electrical performance), and manufacturer-recommended alternatives (functionally compatible from different manufacturers).

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce(br) (Max) V	R1 / R2 kOhms	Vce Sat (Max) mV	Ic(cutoff) (Max) nA	fT MHz	P (Max) mW	Package	Status
DCX114EU-7	Diodes Incorporated	100	50	10 / 10	300	500	250	200	SOT-363	Discontinued
DCX114EU-7-F	Diodes Incorporated	100	50	10 / 10	300	500	250	200	SOT-363	Active
PBLS4003Y,115	Nexperia USA Inc.	100 / 500	50 / 40	10 / 10	150 / 350	1000	300	300	6-TSSOP	Active
PUMD3,115	Nexperia USA Inc.	100	50	10 / 10	150	1000	—	300	6-TSSOP	Active
PUMD3,125	Nexperia USA Inc.	100	50	10 / 10	150	1000	—	300	6-TSSOP	Active
PUMD3,135	Nexperia USA Inc.	100	50	10 / 10	150	1000	—	300	6-TSSOP	Active
PUMD3,165	Nexperia USA Inc.	100	50	10 / 10	150	1000	—	300	6-TSSOP	Active
MUN5311DW1T1G	onsemi	100	50	10 / 10	250	500	—	250	SC-88/SOT-363	Active
PBLS1502Y,115	NXP USA Inc.	100 / 500	50 / 15	4.7 / 4.7	150 / 250	1000 / 100	280	300	SOT-363	Active
PBLS4001Y,115	Nexperia USA Inc.	100 / 500	50 / 40	2.2 / 2.2	150 / 350	1000	300	300	6-TSSOP	Active
PBLS4002Y,115	NXP Semiconductors	500	40	4.7 / 4.7	350	1000	300	300	6-TSSOP	Active

Engineering Selection Recommendations

Direct Equivalent (Recommended for Immediate Replacement):

DCX114EU-7-F is the direct functional equivalent of the discontinued DCX114EU-7. This part maintains identical electrical specifications and package configuration. The primary difference is packaging format (Tape & Reel vs. bulk) and active product status. DCX114EU-7-F is RoHS3 compliant and carries 35,300 units in stock, providing supply continuity for existing designs.

Primary Upgrade Alternatives (Enhanced Performance):

The PUMD3 series (PUMD3,115 / PUMD3,125 / PUMD3,135 / PUMD3,165) from Nexperia USA Inc. provides improved electrical performance while maintaining the 10 kOhm base and emitter-base resistor configuration. These parts deliver reduced Vce saturation (150 mV vs. 300 mV), lower collector cutoff current (1 µA vs. 500 nA), and increased power dissipation (300 mW vs. 200 mW). All variants are RoHS3 compliant and actively produced. The PUMD3,165 variant offers the highest inventory availability (158,277 units).

Secondary Upgrade Alternatives:

PBLS4003Y,115 from Nexperia USA Inc. provides dual-rated performance with enhanced PNP collector current (500 mA) and improved transition frequency (300 MHz). This part maintains 10 kOhm resistor values and is suitable for applications requiring higher PNP current handling.

Manufacturer-Recommended Alternatives:

MUN5311DW1T1G from onsemi maintains electrical specifications closely aligned with the DCX114EU-7, with identical 10 kOhm resistor configuration and 50 V breakdown voltage. This part is actively produced with 466,621 units in stock and is RoHS3 compliant.

Conditional Alternatives (Parameter Deviations):

PBLS4001Y,115 and PBLS4002Y,115 feature reduced base and emitter-base resistor values (2.2 kOhms and 4.7 kOhms respectively), resulting in different biasing characteristics. These parts are suitable only for applications where the modified resistor network is acceptable.

PBLS1502Y,115 features 4.7 kOhm resistor values and reduced PNP breakdown voltage (15 V), limiting applicability to designs with lower voltage requirements.

All recommended alternatives maintain surface mount packaging in 6-TSSOP or SOT-363 configurations, MSL 1 (Unlimited) moisture sensitivity, and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can DCX114EU-7-F be used as a direct replacement for DCX114EU-7?

A: Yes. DCX114EU-7-F is electrically and mechanically identical to DCX114EU-7. The primary difference is packaging format (Tape & Reel) and active product status. Both parts feature identical electrical specifications, 10 kOhm resistor networks, and SOT-363 package configuration.

Q: What is the primary difference between DCX114EU-7 and the PUMD3 series?

A: The PUMD3 series provides improved saturation characteristics (150 mV vs. 300 mV Vce saturation) and increased power dissipation capability (300 mW vs. 200 mW). Both maintain the critical 10 kOhm base and emitter-base resistor values. The PUMD3 series is recommended for applications requiring lower saturation voltage or higher power handling.

Q: Are the PBLS4001Y,115 and PBLS4002Y,115 suitable replacements?

A: These parts are not direct replacements. PBLS4001Y,115 features 2.2 kOhm resistor values, and PBLS4002Y,115 features 4.7 kOhm resistor values, both differing from the DCX114EU-7 specification of 10 kOhms. The modified resistor networks alter biasing characteristics and are suitable only for applications where this change is acceptable.

Q: What is the significance of the resistor values (R1 and R2) in pre-biased transistors?

A: The base resistor (R1) and emitter-base resistor (R2) determine the biasing network characteristics and switching speed. The DCX114EU-7 specifies 10 kOhm values for both resistors. Substitute parts with different resistor values (such as 2.2 kOhms or 4.7 kOhms) will exhibit different biasing behavior and are not interchangeable without circuit analysis.

Q: Can MUN5311DW1T1G replace DCX114EU-7 in all applications?

A: MUN5311DW1T1G is electrically compatible with DCX114EU-7, maintaining identical 10 kOhm resistor configuration, 50 V breakdown voltage, and 100 mA collector current. The primary difference is Vce saturation specification (250 mV vs. 300 mV). This part is suitable for applications where the improved saturation characteristic is acceptable or beneficial.

Q: What does RoHS3 compliance mean for component selection?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting lead and other hazardous materials. DCX114EU-7 is RoHS non-compliant, while DCX114EU-7-F and all Nexperia and onsemi alternatives are RoHS3 compliant. For new designs and regulated applications, RoHS3 compliant alternatives are required.

Q: Are all substitute parts available in the same package configuration?

A: All substitute parts are available in 6-TSSOP, SC-88, or SOT-363 surface mount packages. These designations refer to the same physical package with six leads. All parts maintain MSL 1 (Unlimited) moisture sensitivity level, indicating no special moisture handling requirements.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel (TR) packaging provides components on continuous tape suitable for automated assembly equipment. Cut Tape (CT) and Digi-Reel packaging provide smaller quantities on tape segments. Both formats contain identical components; the difference is in quantity and presentation format for manufacturing processes.

Q: Which substitute part offers the best inventory availability?

A: PUMD3,165 from Nexperia USA Inc. offers the highest inventory availability with 158,277 units in stock. MUN5311DW1T1G from onsemi provides 466,621 units in stock, offering the largest available quantity across all alternatives.

Q: Can PBLS1502Y,115 be used in applications requiring 50 V breakdown voltage?

A: PBLS1502Y,115 features dual voltage ratings: 50 V for the NPN transistor and 15 V for the PNP transistor. This part is suitable only for applications where the PNP transistor operates at 15 V or below. Applications requiring 50 V operation on both transistors require alternatives with higher PNP breakdown voltage specifications.

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