PUMB9,125 Pre-Biased Dual PNP Transistor Equivalent & Substitute Parts

Part Overview

The PUMB9,125 is an active-status pre-biased dual PNP bipolar junction transistor (BJT) manufactured by Nexperia USA Inc. in a 6-TSSOP surface mount package. This component integrates two PNP transistors with internal biasing resistors, designed for applications requiring compact, pre-configured switching and amplification circuits. The part operates at 50V collector-emitter breakdown voltage with 100mA maximum collector current and 300mW power dissipation. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and compliance certifications to support design flexibility and supply chain continuity.

Key Parameters

Parameter	Value	Unit
Transistor Type	2 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)	47	kOhms
Power - Max	300	mW
Frequency - Transition	180	MHz
Package / Case	6-TSSOP, SC-88, SOT-363	—
RoHS Status	ROHS3 Compliant	—
Grade	Automotive	—
Qualification	AEC-Q100	—

Substitute Part Grouping Explanation

Substitute parts for the PUMB9,125 are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Transistor configuration: 2 PNP - Pre-Biased (Dual)
Maximum collector current: 100mA
Collector-emitter breakdown voltage: 50V
Base resistor (R1): 10kOhms
Emitter-base resistor (R2): 47kOhms (with tolerance for UMB11NTN at 10kOhms)
Package compatibility: 6-TSSOP, SC-88, SOT-363 footprints
Surface mount mounting type
RoHS3 compliance
Moisture sensitivity level: 1 (Unlimited)

Substitution Logic: All identified substitute parts maintain the core dual PNP pre-biased architecture with identical maximum collector current and breakdown voltage ratings. Package variants (SC-88, SOT-363, UMT6) are mechanically and electrically compatible within the specified footprint family. Variations in power dissipation, transition frequency, and saturation characteristics are secondary parameters that do not preclude substitution when the primary electrical specifications align.

Parameter Comparison

Parameter	PUMB9,125 (Nexperia)	MUN5114DW1T1G (onsemi)	DDA114YU-7-F (Diodes Inc.)	UMB11NTN (Rohm)
Manufacturer	Nexperia USA Inc.	onsemi	Diodes Incorporated	Rohm Semiconductor
Transistor Type	2 PNP - Pre-Biased (Dual)	2 PNP - Pre-Biased (Dual)	2 PNP - Pre-Biased (Dual)	2 PNP - Pre-Biased (Dual)
Current - Collector (Ic) (Max)	100 mA	100 mA	100 mA	100 mA
Voltage - Collector Emitter Breakdown (Max)	50 V	50 V	50 V	50 V
Resistor - Base (R1)	10 kOhms	10 kOhms	10 kOhms	10 kOhms
Resistor - Emitter Base (R2)	47 kOhms	47 kOhms	47 kOhms	10 kOhms
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 5mA, 5V	80 @ 5mA, 10V	68 @ 10mA, 5V	20 @ 5mA, 5V
Vce Saturation (Max) @ Ib, Ic	100mV @ 250µA, 5mA	250mV @ 300µA, 10mA	300mV @ 250µA, 5mA	300mV @ 500µA, 10mA
Current - Collector Cutoff (Max)	1 µA	500 nA	500 nA	500 nA
Frequency - Transition	180 MHz	— (Not specified)	250 MHz	250 MHz
Power - Max	300 mW	250 mW	200 mW	150 mW
Package / Case	6-TSSOP, SC-88, SOT-363	SC-88/SC70-6/SOT-363	SOT-363	UMT6
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Substitution (MUN5114DW1T1G): The onsemi MUN5114DW1T1G is a direct functional equivalent with matching collector current, breakdown voltage, and base resistor specifications. This part maintains ROHS3 compliance and unlimited moisture sensitivity rating. The SC-88/SOT-363 package is footprint-compatible with the PUMB9,125. Selection of this substitute is appropriate for applications where the 250mW power rating is sufficient and transition frequency specification is not critical.

Compatible Substitution (DDA114YU-7-F): The Diodes Incorporated DDA114YU-7-F maintains all critical electrical parameters with identical collector current and breakdown voltage. The SOT-363 package is mechanically compatible. This part offers higher transition frequency (250MHz versus 180MHz) and lower power dissipation (200mW). ROHS3 compliance and unlimited MSL rating are maintained. Selection is appropriate for applications requiring higher frequency performance within the same power envelope.

Compatible Substitution (UMB11NTN): The Rohm Semiconductor UMB11NTN is a dual PNP pre-biased transistor with matching collector current and breakdown voltage specifications. The emitter-base resistor differs at 10kOhms versus 47kOhms in the primary part, resulting in different DC current gain characteristics. The UMT6 package is mechanically compatible within the SOT-363 family. This part offers 250MHz transition frequency and 150mW power dissipation. ROHS3 compliance and unlimited MSL rating are maintained. Selection requires circuit-level evaluation of the altered biasing network impact.

Compliance Considerations: All substitute parts maintain active product status, ROHS3 compliance, and unlimited moisture sensitivity. The PUMB9,125 carries automotive grade and AEC-Q100 qualification; substitute parts should be evaluated for equivalent automotive qualification if required by application specifications.

Frequently Asked Questions (FAQ)

Q: Can the MUN5114DW1T1G replace the PUMB9,125 in automotive applications? A: The MUN5114DW1T1G is electrically compatible with matching collector current, breakdown voltage, and biasing resistors. However, the PUMB9,125 carries AEC-Q100 qualification and automotive grade designation. Substitution in automotive applications requires verification that the MUN5114DW1T1G meets equivalent automotive qualification requirements for your specific application.

Q: What is the impact of the different emitter-base resistor in the UMB11NTN? A: The UMB11NTN uses a 10kOhms emitter-base resistor compared to 47kOhms in the PUMB9,125. This results in significantly different DC current gain characteristics (20 @ 5mA, 5V versus 100 @ 5mA, 5V). Circuit-level analysis is required to determine if the altered biasing network affects circuit performance. The lower current gain may impact switching speed and saturation behavior.

Q: Are all substitute parts available in the same package? A: The PUMB9,125, MUN5114DW1T1G, and DDA114YU-7-F are available in compatible 6-TSSOP/SC-88/SOT-363 packages suitable for the same PCB footprint. The UMB11NTN is supplied in UMT6 package, which is mechanically compatible within the SOT-363 family but may require footprint verification for specific PCB designs.

Q: Which substitute offers the best high-frequency performance? A: Both the DDA114YU-7-F and UMB11NTN offer 250MHz transition frequency compared to 180MHz in the PUMB9,125. Selection between these two depends on biasing network requirements, as the UMB11NTN uses a different emitter-base resistor value.

Q: Do all substitute parts meet RoHS3 compliance? A: Yes. The PUMB9,125, MUN5114DW1T1G, DDA114YU-7-F, and UMB11NTN are all ROHS3 compliant with unlimited moisture sensitivity level (MSL 1).

Q: What is the power dissipation difference between these parts? A: The PUMB9,125 is rated at 300mW maximum power dissipation. The MUN5114DW1T1G is rated at 250mW, the DDA114YU-7-F at 200mW, and the UMB11NTN at 150mW. Selection should account for circuit power requirements and thermal management considerations.

Q: Can I use these parts interchangeably on the same PCB? A: The PUMB9,125, MUN5114DW1T1G, and DDA114YU-7-F share compatible 6-TSSOP/SC-88/SOT-363 footprints and can use the same PCB layout. The UMB11NTN in UMT6 package requires footprint verification. All parts require electrical circuit analysis due to variations in DC current gain and saturation characteristics.

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