PUMB3,115 Equivalent & Substitute Parts

Part Overview

The PUMB3,115 is a pre-biased dual PNP bipolar junction transistor (BJT) manufactured by Nexperia USA Inc. in a 6-TSSOP surface mount package. This component is designed for applications requiring integrated base bias resistors, simplifying circuit design and reducing component count. The part is Active in product status and carries AEC-Q100 automotive qualification with ROHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

PUMB3,115

Nexperia USA Inc.In Stock: 3249PUMB3,115 Datasheet

Current PartRFQ

UMB10NTN

Rohm SemiconductorIn Stock: 26491UMB10NTN Datasheet

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UMB11NTN

Rohm SemiconductorIn Stock: 22248UMB11NTN Datasheet

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UMB2NTN

Rohm SemiconductorIn Stock: 5962UMB2NTN Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PUMB3,115 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Transistor type must be 2 PNP - Pre-Biased (Dual)
• Maximum collector current must be 100mA or greater
• Maximum collector-emitter breakdown voltage must be 50V or greater
• Maximum power dissipation must be 300mW or greater
• Package must be 6-TSSOP, SC-88, or SOT-363

Mechanical Compatibility Requirements:

• Surface mount configuration
• 6-pin TSSOP package footprint compatibility

Compliance Requirements:

• ROHS3 compliance
• Moisture sensitivity level 1 (Unlimited)
• Active product status

The three substitute parts identified (UMB10NTN, UMB11NTN, UMB2NTN) all meet these core requirements. Variations in base resistor values (R1), emitter-base resistor values (R2), DC current gain (hFE), and transition frequency represent design trade-offs that do not prevent substitution when circuit design accommodates these differences.

Parameter Comparison

Engineering Selection Recommendations

PUMB3,115 (Primary Part): Nexperia's PUMB3,115 is the specified component with automotive AEC-Q100 qualification and 300mW power rating. This part is recommended for applications requiring maximum power dissipation capability and automotive-grade reliability. Current inventory of 3,142 pieces supports immediate procurement.

UMB10NTN (Rohm Semiconductor): This substitute features a 2.2kOhm base resistor and 47kOhm emitter-base resistor configuration. The 150mW power rating is lower than the primary part but remains suitable for applications within this thermal envelope. The 250MHz transition frequency provides enhanced switching performance. Inventory of 26,400 pieces ensures supply availability. ROHS3 compliance and MSL 1 rating match primary part specifications.

UMB11NTN (Rohm Semiconductor): This substitute features symmetric 10kOhm base and emitter-base resistors, providing balanced bias characteristics. The 150mW power rating and 250MHz transition frequency match UMB10NTN specifications. Inventory of 22,189 pieces supports sustained supply. ROHS3 compliance and MSL 1 rating match primary part specifications.

UMB2NTN (Rohm Semiconductor): This substitute features high-value 47kOhm base and emitter-base resistors, suitable for applications requiring minimal base current draw. The 150mW power rating and 250MHz transition frequency align with other Rohm alternatives. Inventory of 5,950 pieces is available. ROHS3 compliance and MSL 1 rating match primary part specifications.

All substitute parts maintain Active product status and ROHS3 compliance. Selection among substitutes depends on circuit bias requirements determined by base resistor values and application power dissipation limits.

Frequently Asked Questions (FAQ)

Q: Can UMB10NTN, UMB11NTN, or UMB2NTN be used directly in place of PUMB3,115?

A: Direct substitution is possible from a mechanical and electrical standpoint. All parts share the same 6-TSSOP package footprint, 100mA maximum collector current, and 50V breakdown voltage. However, the different base resistor values (R1) will alter circuit bias characteristics. Circuit design must accommodate these resistor value differences. The lower 150mW power rating of Rohm parts requires verification that application power dissipation does not exceed this limit.

Q: What is the primary difference between the three Rohm substitute parts?

A: The three Rohm substitutes differ in their integrated base resistor configurations. UMB10NTN uses 2.2kOhm/47kOhm, UMB11NTN uses 10kOhm/10kOhm, and UMB2NTN uses 47kOhm/47kOhm. These differences affect the bias point and input impedance characteristics. Selection depends on the specific bias requirements of the application circuit.

Q: Are all substitute parts automotive qualified?

A: The PUMB3,115 carries AEC-Q100 automotive qualification. The Rohm substitute parts (UMB10NTN, UMB11NTN, UMB2NTN) do not list AEC-Q100 qualification in the provided specifications. Applications requiring automotive qualification should confirm Rohm part qualification status through the manufacturer.

Q: What is the significance of the 150mW versus 300mW power rating difference?

A: The PUMB3,115 supports 300mW maximum power dissipation, while all three Rohm substitutes support 150mW. Applications operating at power levels between 150mW and 300mW cannot use the Rohm substitutes without thermal management modifications or circuit redesign to reduce power dissipation.

Q: Do all parts have the same moisture sensitivity level?

A: Yes. The PUMB3,115 and all three substitute parts (UMB10NTN, UMB11NTN, UMB2NTN) have MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage and handling.

Q: Are the package designations identical across all parts?

A: Yes. All parts are specified as 6-TSSOP, SC-88, SOT-363 package types, ensuring mechanical and footprint compatibility for surface mount assembly.

Q: What is the difference in transition frequency between PUMB3,115 and the Rohm substitutes?

A: The PUMB3,115 does not specify a transition frequency value. The three Rohm substitutes all specify 250MHz transition frequency, indicating faster switching capability. This difference does not prevent substitution but may provide performance benefits in high-frequency applications.