PUMD20,115 Pre-Biased Bipolar Transistor Equivalent & Substitute Parts

Part Overview

The PUMD20,115 is an active pre-biased dual bipolar transistor (1 NPN, 1 PNP) manufactured by Nexperia USA Inc. in 6-TSSOP surface mount packaging. This component integrates internal base resistors (2.2kΩ each) and is qualified to AEC-Q100 automotive standards. The part operates at 50V maximum collector-emitter breakdown voltage with 100mA maximum collector current and 300mW power dissipation. Substitute parts are necessary when the primary part is unavailable, when alternative packaging formats are required, or when design specifications allow for compatible electrical parameters within defined tolerances.

Substiute Parts

PUMD20,115

Nexperia USA Inc.In Stock: 3371PUMD20,115 Datasheet

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DCX114EU-7-F

Diodes IncorporatedIn Stock: 35338DCX114EU-7-F Datasheet

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DCX123JUQ-7-F

Diodes IncorporatedIn Stock: 38990DCX123JUQ-7-F Datasheet

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MUN5331DW1T1G

onsemiIn Stock: 15467MUN5331DW1T1G Datasheet

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NSVMUN5331DW1T1G

onsemiIn Stock: 12185NSVMUN5331DW1T1G Datasheet

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RN49A2,LF(CT

Toshiba Semiconductor and StorageIn Stock: 1159RN49A2,LF(CT Datasheet

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SMUN5231DW1T1G

onsemiIn Stock: 9164SMUN5231DW1T1G Datasheet

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UMD3NTR

Rohm SemiconductorIn Stock: 56303UMD3NTR Datasheet

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UMD5NTR

Rohm SemiconductorIn Stock: 74334UMD5NTR Datasheet

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UMH1NTN

Rohm SemiconductorIn Stock: 47369UMH1NTN Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the PUMD20,115 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Transistor configuration: 1 NPN, 1 PNP pre-biased dual structure
• Voltage rating: 50V collector-emitter breakdown minimum
• Current rating: 100mA maximum collector current minimum
• Package compatibility: 6-TSSOP, SC-88, or SOT-363 surface mount packages
• Internal base resistor values: 2.2kΩ for both R1 and R2 (exact match required for direct substitution)

Allowable Variation Parameters:

• Power dissipation: 200mW to 300mW acceptable
• DC current gain (hFE): 30 minimum at specified test conditions
• Vce saturation: up to 300mV acceptable
• Collector cutoff current: up to 500nA acceptable
• Frequency transition: optional specification

Non-Substitutable Configurations:

• Parts with 2 NPN or 2 PNP configuration (single transistor type only)
• Parts with different internal resistor values (10kΩ, 22kΩ, 47kΩ configurations are not direct substitutes)
• Parts with power ratings below 200mW

The following parts meet the mandatory criteria for direct substitution: DCX123JUQ-7-F, MUN5331DW1T1G, NSVMUN5331DW1T1G, and UMD5NTR.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes with Identical Internal Resistor Configuration (2.2kΩ / 2.2kΩ):

MUN5331DW1T1G (onsemi) and NSVMUN5331DW1T1G (onsemi) are functionally equivalent to PUMD20,115 with matching internal resistor values. Both parts are active, RoHS3 compliant, and available in SC-88/SC70-6/SOT-363 packaging. These parts do not carry automotive grade or AEC qualification. Power dissipation is 250mW, which is within acceptable range. Vce saturation is 250mV, which is lower than the PUMD20,115 specification of 150mV.

DCX123JUQ-7-F (Diodes Incorporated) provides automotive-grade qualification (AEC-Q101) and is RoHS3 compliant. However, the internal resistor configuration differs: R1 is 2.2kΩ (matching) but R2 is 47kΩ (non-matching). This configuration change affects circuit behavior and requires circuit-level evaluation. Power dissipation is 200mW.

UMD5NTR (Rohm Semiconductor) offers multiple internal resistor configurations (4.7kΩ/10kΩ and 47kΩ/47kΩ options). The part with 4.7kΩ/10kΩ configuration is closest to the PUMD20,115 but does not provide an exact 2.2kΩ/2.2kΩ match. Power dissipation is 150mW or 120mW depending on configuration variant.

Recommended Selection Criteria:

For applications requiring exact internal resistor matching and automotive qualification, DCX123JUQ-7-F is the primary substitute despite the R2 resistor difference, as it maintains AEC-Q101 qualification. For non-automotive applications where internal resistor configuration is non-critical, MUN5331DW1T1G or NSVMUN5331DW1T1G provide direct electrical equivalence with matching 2.2kΩ/2.2kΩ resistor configuration.

Frequently Asked Questions (FAQ)

Q: Can I substitute PUMD20,115 with MUN5331DW1T1G in an automotive application?

A: MUN5331DW1T1G is not automotive-grade and does not carry AEC qualification. Use only in non-automotive applications or where automotive qualification is not a design requirement. For automotive applications, DCX123JUQ-7-F (AEC-Q101) is the appropriate substitute.

Q: What is the significance of the internal resistor values (R1 and R2)?

A: Internal resistor values determine the pre-bias characteristics and switching behavior of the transistor. PUMD20,115 uses 2.2kΩ for both R1 and R2. Substitutes with different resistor values (such as 10kΩ, 22kΩ, or 47kΩ) will exhibit different bias currents and switching speeds. Direct substitution requires matching resistor values unless circuit redesign is performed.

Q: Are all substitute parts available in the same package as PUMD20,115?

A: PUMD20,115 is supplied in 6-TSSOP package. Substitute parts are available in equivalent packages: 6-TSSOP, SC-88, SOT-363, or UMT6. These packages are mechanically and electrically compatible for surface mount applications. Verify PCB footprint compatibility before substitution.

Q: What is the difference between AEC-Q100 and AEC-Q101 qualification?

A: PUMD20,115 carries AEC-Q100 qualification (automotive discrete semiconductors). DCX123JUQ-7-F carries AEC-Q101 qualification (automotive integrated circuits). Both are automotive-grade qualifications. AEC-Q100 is the appropriate standard for discrete transistors. Substitution with AEC-Q101 parts is acceptable in automotive applications but represents a different qualification standard.

Q: Can I use UMD5NTR as a substitute if my circuit allows for different internal resistor values?

A: UMD5NTR is available with multiple internal resistor configurations. If your circuit design permits operation with 4.7kΩ/10kΩ or 47kΩ/47kΩ resistor combinations, UMD5NTR is a valid substitute. Confirm the specific resistor configuration variant before procurement. Power dissipation is lower (150mW or 120mW) than PUMD20,115 (300mW), which is acceptable for most applications.

Q: What is the impact of lower power dissipation ratings in substitute parts?

A: Substitute parts with lower power ratings (200mW to 250mW versus 300mW) are acceptable if circuit operating conditions do not exceed the substitute part's thermal limits. Verify that maximum power dissipation in your application does not exceed the substitute part's rating. Lower power ratings indicate more conservative thermal design margins.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (DCX123JUQ-7-F, MUN5331DW1T1G, NSVMUN5331DW1T1G, UMD5NTR, and others) are RoHS3 compliant. PUMD20,115 is also RoHS3 compliant. All parts have Moisture Sensitivity Level (MSL) 1 (Unlimited), indicating no moisture sensitivity restrictions.

Q: What packaging format should I specify when ordering substitute parts?

A: Specify the supplier device package format: SOT-363 for Diodes Incorporated parts (DCX123JUQ-7-F, DCX114EU-7-F), SC-88/SC70-6/SOT-363 for onsemi parts (MUN5331DW1T1G, NSVMUN5331DW1T1G), UMT6 for Rohm Semiconductor parts (UMD3NTR, UMD5NTR), or US6 for Toshiba parts (RN49A2,LF(CT). Verify PCB footprint compatibility with your design before finalizing the order.