PUMD9/ZLZ Pre-Biased Bipolar Transistor Equivalent & Substitute Parts

Part Overview

The PUMD9/ZLZ is a pre-biased dual bipolar transistor (1 NPN, 1 PNP configuration) manufactured by Nexperia USA Inc. in a 6-TSSOP surface mount package. This component integrates internal biasing resistors (10kΩ base resistor, 47kΩ emitter-base resistor) to simplify circuit design in switching and logic applications. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Key Parameters

Parameter	Value	Unit
Transistor Type	1 NPN, 1 PNP - Pre-Biased (Dual)	—
Maximum Collector Current (Ic)	100	mA
Collector-Emitter Breakdown Voltage (Max)	50	V
Base Resistor (R1)	10	kΩ
Emitter-Base Resistor (R2)	47	kΩ
DC Current Gain (hFE Min)	100	@ 5mA, 5V
Vce Saturation (Max)	100	mV @ 250µA, 5mA
Collector Cutoff Current (Max)	1	µA
Transition Frequency	230, 180	MHz
Maximum Power Dissipation	300	mW
Package Type	6-TSSOP / SC-88 / SOT-363	—
Grade	Automotive	—
Qualification	AEC-Q101	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the PUMD9/ZLZ is determined by strict equivalence across the following critical parameters:

Primary Substitution Criteria:

Transistor configuration (1 NPN, 1 PNP dual vs. 2 NPN dual)
Maximum collector current: 100mA
Collector-emitter breakdown voltage: 50V
Internal base resistor value: 10kΩ
Internal emitter-base resistor value: 47kΩ
Package compatibility: 6-TSSOP, SC-88, SOT-363
Surface mount mounting type
RoHS3 compliance
Moisture sensitivity level: 1 (Unlimited)

Direct Equivalents (1 NPN, 1 PNP Configuration): Parts maintaining identical transistor configuration, resistor values, and electrical ratings are classified as direct equivalents. These include PUMD9,165 (Nexperia, active status), ACX114YUQ-13R and ACX114YUQ-7R (Diodes Incorporated, active status), DCX114YU-7-F (Diodes Incorporated, active status), and RN4907,LF (Toshiba, active status).

Functional Equivalents (2 NPN Configuration): Parts with dual NPN configuration (ADC114YUQ-13, ADC114YUQ-7, MUN5214DW1T1G, NSVMUN5214DW1T3G, RN1907,LF(CT)) provide functional substitution where circuit topology permits use of two NPN transistors instead of mixed NPN/PNP configuration. These maintain identical current, voltage, and resistor specifications.

Package Variants: All substitute parts are available in 6-TSSOP, SC-88, or SOT-363 surface mount packages with equivalent footprints and pin assignments.

Parameter Comparison

Part Number	Manufacturer	Transistor Type	Ic (Max) mA	Vce(br) V	R1 kΩ	R2 kΩ	Power mW	Package	Status	AEC-Q101
PUMD9/ZLZ	Nexperia	1 NPN, 1 PNP	100	50	10	47	300	6-TSSOP	Obsolete	Yes
PUMD9,165	Nexperia	1 NPN, 1 PNP	100	50	10	47	300	6-TSSOP	Active	No
ACX114YUQ-13R	Diodes Inc.	1 NPN, 1 PNP	100	50	10	47	270	SOT-363	Active	Yes
ACX114YUQ-7R	Diodes Inc.	1 NPN, 1 PNP	100	50	10	47	270	SOT-363	Active	Yes
DCX114YU-7-F	Diodes Inc.	1 NPN, 1 PNP	100	50	10	47	200	SOT-363	Active	No
RN4907,LF	Toshiba	1 NPN, 1 PNP	100	50	10	47	200	US6	Active	No
ADC114YUQ-13	Diodes Inc.	2 NPN	100	50	10, 47	10, 47	270	SOT-363	Active	Yes
ADC114YUQ-7	Diodes Inc.	2 NPN	100	50	10, 47	10, 47	270	SOT-363	Active	Yes
MUN5214DW1T1G	onsemi	2 NPN	100	50	10	47	250	SC-88/SOT-363	Active	No
NSVMUN5214DW1T3G	onsemi	2 NPN	100	50	10	47	250	SC-88/SOT-363	Active	No
RN1907,LF(CT	Toshiba	2 NPN	100	50	10	47	200	US6	Active	No

Engineering Selection Recommendations

Primary Recommendation for Direct Replacement:

PUMD9,165 (Nexperia USA Inc.) is the direct active equivalent of the obsolete PUMD9/ZLZ. Both parts maintain identical electrical specifications, internal resistor values, and 6-TSSOP packaging. PUMD9,165 is available in tape and reel packaging with 2420 units in stock. This part is RoHS3 compliant and carries MSL 1 rating. Selection of PUMD9,165 requires no circuit modification and provides full functional compatibility.

Recommended Alternatives for Automotive Applications:

ACX114YUQ-13R and ACX114YUQ-7R (Diodes Incorporated) are active alternatives qualified to AEC-Q101 automotive standard. Both maintain the 1 NPN, 1 PNP configuration with identical current, voltage, and resistor specifications. These parts are supplied in SOT-363 package (functionally equivalent to 6-TSSOP) with high inventory availability (130,100 and 52,980 units respectively). Power dissipation is reduced to 270mW compared to the original 300mW specification, which is acceptable for applications within the original thermal envelope.

Functional Alternatives for Dual NPN Applications:

ADC114YUQ-13 and ADC114YUQ-7 (Diodes Incorporated) provide dual NPN configuration with AEC-Q101 qualification. These parts are suitable for circuits where two NPN transistors can replace the mixed NPN/PNP configuration. Resistor values are available in 10kΩ and 47kΩ combinations. Inventory levels are 21,323 and 2,064 units respectively.

Secondary Alternatives:

DCX114YU-7-F (Diodes Incorporated, 125,100 units in stock) and RN4907,LF (Toshiba, 18,400 units in stock) maintain the 1 NPN, 1 PNP configuration with identical resistor values. Power dissipation is reduced to 200mW. These parts are suitable for applications with lower thermal requirements.

Dual NPN Alternatives:

MUN5214DW1T1G (onsemi, 513,700 units) and NSVMUN5214DW1T3G (onsemi, 10,100 units) provide dual NPN configuration with 250mW power rating. RN1907,LF(CT (Toshiba, 1,121 units) offers dual NPN configuration in US6 package with 200mW power rating.

All recommended alternatives maintain RoHS3 compliance and MSL 1 moisture sensitivity rating.

Frequently Asked Questions (FAQ)

Q: Can PUMD9,165 be used as a direct replacement for PUMD9/ZLZ?

A: Yes. PUMD9,165 is the active equivalent of the obsolete PUMD9/ZLZ. Both parts share identical electrical specifications, internal resistor values (10kΩ base, 47kΩ emitter-base), maximum ratings (100mA, 50V), and 6-TSSOP packaging. No circuit modification is required.

Q: What is the difference between 1 NPN, 1 PNP and 2 NPN configurations?

A: The PUMD9/ZLZ contains one NPN transistor and one PNP transistor in a single package. Parts designated as 2 NPN contain two NPN transistors. Substitution with 2 NPN parts requires circuit topology that accommodates dual NPN operation. Direct replacement requires maintaining the mixed NPN/PNP configuration.

Q: Are ACX114YUQ-13R and ACX114YUQ-7R interchangeable?

A: Both parts maintain identical electrical specifications, internal resistor values, and package type (SOT-363). The primary difference is the manufacturing date code designation (13R vs. 7R). Both are active, AEC-Q101 qualified, and suitable for automotive applications. Selection between these parts is based on inventory availability and supply chain requirements.

Q: What does the SOT-363 package designation mean in relation to 6-TSSOP?

A: SOT-363 and 6-TSSOP are equivalent package designations for the same physical form factor. Both refer to a 6-pin surface mount package with identical pin spacing, dimensions, and footprint. Parts specified as SC-88, SC-88/SC70-6/SOT-363, or 6-TSSOP are mechanically and electrically compatible.

Q: Why is the power dissipation lower in some substitute parts (270mW vs. 300mW)?

A: Power dissipation ratings reflect the maximum thermal capability of the package under specified conditions. A lower rating (270mW or 200mW) indicates more conservative thermal design. Parts with lower power ratings are suitable for applications operating within the original thermal envelope. The reduction does not affect electrical functionality for standard switching applications.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed are RoHS3 compliant. The original PUMD9/ZLZ is also RoHS3 compliant. All parts maintain MSL 1 (Unlimited) moisture sensitivity level, indicating no special moisture control requirements during storage or handling.

Q: What is AEC-Q101 qualification and why does it matter?

A: AEC-Q101 is an automotive industry qualification standard for discrete semiconductors. Parts carrying this qualification have undergone rigorous testing for reliability and performance in automotive environments. ACX114YUQ-13R, ACX114YUQ-7R, ADC114YUQ-13, and ADC114YUQ-7 are AEC-Q101 qualified. For automotive applications, AEC-Q101 qualified parts are preferred.

Q: Can I use a part with lower transition frequency (180MHz vs. 250MHz)?

A: Transition frequency indicates the maximum operating frequency capability. A lower transition frequency (180MHz or 200MHz) is suitable for applications operating below that frequency threshold. For switching applications at standard logic speeds, lower transition frequency parts are functionally equivalent. Application-specific frequency requirements determine suitability.

Q: What inventory considerations should guide part selection?

A: Inventory availability varies significantly among substitute parts. PUMD9,165 (2,420 units), ACX114YUQ-13R (130,100 units), and MUN5214DW1T1G (513,700 units) offer high availability. RN1907,LF(CT (1,121 units) and ADC114YUQ-7 (2,064 units) have limited availability. Selection should balance electrical compatibility with supply chain reliability.

Q: Are there package differences between US6 and SOT-363?

A: US6 and SOT-363 are distinct package designations. US6 is a Toshiba-specific package designation for a 6-pin surface mount form factor. SOT-363 is the industry-standard designation for the same physical package. Parts in US6 packaging (RN4907,LF and RN1907,LF(CT) are mechanically compatible with SOT-363 footprints but may require verification of pin assignment compatibility in specific circuit layouts.

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