PUMB17/ZLX Pre-Biased Bipolar Transistor Equivalent & Substitute Parts

Part Overview

The PUMB17/ZLX is a pre-biased dual PNP bipolar transistor (BJT) manufactured by Nexperia USA Inc., designed for surface mount applications in 6-TSSOP packaging. This component integrates two PNP transistors with internal biasing resistors, eliminating the need for external base resistor networks in switching and amplification circuits.

The PUMB17/ZLX is classified as obsolete. Identification of functionally equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production and repair applications. Substitute parts must maintain electrical compatibility across collector current, breakdown voltage, internal resistor values, and saturation characteristics.

Substiute Parts

PUMB17/ZLX

Nexperia USA Inc.In Stock: 791PUMB17/ZLX Datasheet

Current PartRFQ

PUMB17,115

Nexperia USA Inc.In Stock: 36126PUMB17,115 Datasheet

SimilarRFQ

NSVMUN5137DW1T1G

onsemiIn Stock: 19791NSVMUN5137DW1T1G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PUMB17/ZLX are qualified based on the following electrical and mechanical parameters:

Critical Matching Parameters:

• Transistor configuration: 2 PNP - Pre-Biased (Dual)
• Maximum collector current: 100 mA
• Collector-emitter breakdown voltage: 50 V
• Internal base resistor (R1): 47 kOhms
• Internal emitter-base resistor (R2): 22 kOhms
• Package type: 6-TSSOP / SC-88 / SOT-363 surface mount

Acceptable Variation Parameters:

• DC current gain (hFE): Minimum 60 at specified test conditions
• Saturation voltage (Vce): Maximum 150 mV at specified bias conditions
• Collector cutoff current: Maximum 1 µA
• Power dissipation: Maximum 300 mW

Substitute parts must maintain identical internal resistor values and package compatibility to ensure direct functional replacement without circuit redesign. Variations in DC current gain and saturation voltage within specified limits do not affect circuit operation in standard switching applications.

Parameter Comparison

Engineering Selection Recommendations

PUMB17,115 (Nexperia USA Inc.)

The PUMB17,115 is the direct functional equivalent of the PUMB17/ZLX. Both parts share identical electrical specifications, internal resistor values, and package configuration. The PUMB17,115 is currently in active production status with high inventory availability (36,100 units). This part is qualified to AEC-Q100 automotive standards and is supplied in Tape & Reel packaging. Selection of PUMB17,115 is appropriate for all applications previously designed with PUMB17/ZLX without circuit modification.

NSVMUN5137DW1T1G (onsemi)

The NSVMUN5137DW1T1G is a functionally compatible substitute manufactured by onsemi. This part maintains identical transistor configuration, collector current rating, breakdown voltage, and internal resistor values. The NSVMUN5137DW1T1G exhibits higher DC current gain (80 vs. 60 minimum) and lower collector cutoff current (500 nA vs. 1 µA), representing improved performance characteristics. Maximum saturation voltage is 250 mV compared to 150 mV for the PUMB17/ZLX, and maximum power dissipation is 250 mW versus 300 mW. The NSVMUN5137DW1T1G is supplied in SC-88/SC70-6/SOT-363 packaging and is currently in active production with inventory availability of 19,772 units. This part is suitable for applications where the higher saturation voltage and lower power rating are within design margins.

Both substitute parts are RoHS3 compliant, REACH unaffected, and classified as EAR99 for export control purposes.

Frequently Asked Questions (FAQ)

Q: Can PUMB17,115 be used as a direct replacement for PUMB17/ZLX without PCB modification?

A: Yes. The PUMB17,115 is electrically and mechanically identical to PUMB17/ZLX. Both parts feature the same internal resistor network (47 kOhms base, 22 kOhms emitter-base), identical electrical ratings, and compatible 6-TSSOP surface mount packaging. No circuit redesign or PCB layout changes are required.

Q: What is the difference between PUMB17,115 and NSVMUN5137DW1T1G?

A: Both parts are functionally equivalent pre-biased dual PNP transistors with identical collector current (100 mA), breakdown voltage (50 V), and internal resistor values. The NSVMUN5137DW1T1G exhibits higher DC current gain (80 minimum vs. 60 minimum) and lower collector cutoff current (500 nA vs. 1 µA). The NSVMUN5137DW1T1G has a maximum saturation voltage of 250 mV compared to 150 mV for PUMB17,115, and a lower maximum power rating of 250 mW versus 300 mW. These differences are acceptable in standard switching applications where saturation voltage and power dissipation margins exist.

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

A: All three parts (PUMB17/ZLX, PUMB17,115, and NSVMUN5137DW1T1G) are available in 6-TSSOP / SC-88 / SOT-363 surface mount packaging. Package compatibility is confirmed across all substitutes.

Q: What is the significance of the AEC-Q100 qualification on PUMB17,115?

A: AEC-Q100 qualification indicates that PUMB17,115 meets automotive industry reliability and quality standards established by the Automotive Electronics Council. This qualification is relevant for applications requiring automotive-grade components. NSVMUN5137DW1T1G does not list AEC-Q100 qualification in the provided specifications.

Q: Can NSVMUN5137DW1T1G be used in applications with tight power dissipation budgets?

A: The NSVMUN5137DW1T1G has a maximum power rating of 250 mW compared to 300 mW for PUMB17/ZLX and PUMB17,115. Applications with power dissipation approaching or exceeding 250 mW should use PUMB17,115 or verify that the NSVMUN5137DW1T1G power rating provides adequate margin for the specific circuit design.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. PUMB17/ZLX, PUMB17,115, and NSVMUN5137DW1T1G are all RoHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for electronic component manufacturing and distribution.

Q: What is the moisture sensitivity level for these parts?

A: All three parts are classified as MSL 1 (Unlimited), indicating unlimited shelf life without moisture control requirements. Standard handling and storage practices are sufficient for these components.