PUMD9/ZLF Equivalent & Substitute Parts

Part Overview

The PUMD9/ZLF is a pre-biased dual bipolar transistor (1 NPN, 1 PNP) manufactured by Nexperia USA Inc. in a 6-TSSOP surface mount package. This component integrates internal biasing resistors, enabling simplified circuit design for switching and amplification applications. The part is classified as obsolete, necessitating identification of active equivalent and substitute components that maintain electrical and mechanical compatibility with existing designs.

Key Parameters

Parameter	Value	Unit
Transistor Type	1 NPN, 1 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
DC Current Gain (hFE) Min @ Ic, Vce	100 @ 5mA, 5V	—
Vce Saturation (Max) @ Ib, Ic	100mV @ 250µA, 5mA	—
Current - Collector Cutoff (Max)	1	µA
Frequency - Transition	230, 180	MHz
Power - Max	300	mW
Package / Case	6-TSSOP, SC-88, SOT-363	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the PUMD9/ZLF is determined by the following critical parameters:

Primary Substitution Criteria:

Transistor type configuration (1 NPN, 1 PNP dual pre-biased)
Maximum collector current: 100 mA
Collector-emitter breakdown voltage: 50 V
Internal base resistor (R1): 10 kOhms
Internal emitter-base resistor (R2): 47 kOhms
Surface mount package compatibility (6-TSSOP, SC-88, SOT-363)
RoHS3 compliance and MSL 1 rating

Direct Equivalents maintain identical transistor configuration (1 NPN, 1 PNP) and all electrical parameters within specified tolerances.

Functional Alternatives include parts with different transistor configurations (2 NPN instead of 1 NPN, 1 PNP) or different package designations (SOT-363 vs. 6-TSSOP) but retain core electrical specifications and surface mount compatibility.

Partial Alternatives meet core electrical requirements but may have variations in transition frequency, power dissipation, or saturation voltage specifications.

Parameter Comparison

Part Number	Manufacturer	Transistor Type	Ic Max (mA)	Vce Breakdown (V)	R1 (kOhms)	R2 (kOhms)	Power Max (mW)	Package	Status
PUMD9/ZLF	Nexperia USA Inc.	1 NPN, 1 PNP	100	50	10	47	300	6-TSSOP	Obsolete
PUMD9,135	Nexperia USA Inc.	1 NPN, 1 PNP	100	50	10	47	300	6-TSSOP	Active
ACX114YUQ-13R	Diodes Incorporated	1 NPN, 1 PNP	100	50	10	47	270	SOT-363	Active
ACX114YUQ-7R	Diodes Incorporated	1 NPN, 1 PNP	100	50	10	47	270	SOT-363	Active
DCX114YU-7-F	Diodes Incorporated	1 NPN, 1 PNP	100	50	10	47	200	SOT-363	Active
RN4907,LF	Toshiba Semiconductor and Storage	1 NPN, 1 PNP	100	50	10	47	200	US6	Active
ADC114YUQ-13	Diodes Incorporated	2 NPN	100	50	10, 47	10, 47	270	SOT-363	Active
ADC114YUQ-7	Diodes Incorporated	2 NPN	100	50	10, 47	10, 47	270	SOT-363	Active
DDC114YU-7-F	Diodes Incorporated	2 NPN	100	50	10	47	200	SOT-363	Active
MUN5214DW1T1G	onsemi	2 NPN	100	50	10	47	250	SC-88/SC70-6/SOT-363	Active
RN1907,LF(CT	Toshiba Semiconductor and Storage	2 NPN	100	50	10	47	200	US6	Active

Engineering Selection Recommendations

Tier 1 - Direct Replacement (Identical Configuration):

PUMD9,135 (Nexperia USA Inc.) is the primary direct equivalent. This part maintains the identical 1 NPN, 1 PNP pre-biased dual transistor configuration, electrical specifications, and 6-TSSOP package. The part is active and in high inventory (10,918 units). Both PUMD9/ZLF and PUMD9,135 share the same base product number and are RoHS3 compliant with MSL 1 rating.

ACX114YUQ-13R and ACX114YUQ-7R (Diodes Incorporated) provide direct functional equivalence with identical 1 NPN, 1 PNP configuration and electrical parameters. These parts are active with substantial inventory availability (130,100 and 52,980 units respectively). Both carry AEC-Q101 automotive qualification and RoHS3 compliance. Package designation is SOT-363, which is mechanically compatible with 6-TSSOP footprints. Power dissipation is 270 mW versus 300 mW for the original part.

Tier 2 - Functional Alternatives (Different Transistor Configuration):

DCX114YU-7-F (Diodes Incorporated) maintains the 1 NPN, 1 PNP configuration with identical electrical parameters but reduced power rating (200 mW). This part is suitable for applications where the full 300 mW power budget is not required. Inventory is substantial (125,100 units).

RN4907,LF (Toshiba Semiconductor and Storage) provides 1 NPN, 1 PNP configuration in a US6 package with 200 mW power rating and 200 MHz transition frequency. This part is active with 18,400 units in stock.

DDC114YU-7-F, ADC114YUQ-13, ADC114YUQ-7, MUN5214DW1T1G, and RN1907,LF(CT feature 2 NPN pre-biased dual configurations instead of 1 NPN, 1 PNP. These parts are suitable only for applications requiring dual NPN transistors and cannot directly replace circuits designed for mixed NPN/PNP functionality.

Compliance and Certification:

All recommended substitutes maintain RoHS3 compliance and MSL 1 (unlimited moisture sensitivity) ratings. ACX114YUQ series parts carry AEC-Q101 automotive qualification, matching the original part's automotive grade designation.

Frequently Asked Questions (FAQ)

Q: Can PUMD9,135 be used as a direct replacement for PUMD9/ZLF?

A: Yes. PUMD9,135 is the active equivalent of the obsolete PUMD9/ZLF. Both parts share identical transistor configuration (1 NPN, 1 PNP), electrical specifications, internal resistor values, and 6-TSSOP package. The primary difference is product status: PUMD9/ZLF is obsolete while PUMD9,135 is active with high inventory availability.

Q: What is the difference between 6-TSSOP and SOT-363 packages?

A: 6-TSSOP and SOT-363 are equivalent package designations for the same physical form factor. Both refer to a 6-pin thin shrink small outline package with identical pin spacing and footprint dimensions. Parts specified with either designation are mechanically and electrically interchangeable on standard PCB layouts.

Q: Can I substitute a 2 NPN pre-biased transistor (DDC114YU-7-F) for the 1 NPN, 1 PNP PUMD9/ZLF?

A: No. The PUMD9/ZLF contains one NPN and one PNP transistor, while DDC114YU-7-F contains two NPN transistors. These configurations serve different circuit functions. Substitution is only valid if your application requires dual NPN functionality. For circuits designed around mixed NPN/PNP operation, use ACX114YUQ or DCX114YU series parts.

Q: What is the significance of the internal resistor values (R1 = 10 kOhms, R2 = 47 kOhms)?

A: These internal biasing resistors are integrated into the pre-biased transistor package and determine the switching characteristics and biasing behavior. All recommended substitutes maintain identical R1 and R2 values, ensuring equivalent circuit performance without external resistor modifications.

Q: Does power dissipation difference (300 mW vs. 270 mW vs. 200 mW) affect substitution suitability?

A: Power rating differences indicate thermal handling capability. Parts with lower power ratings (200 mW or 270 mW) are suitable for applications where the original 300 mW rating is not fully utilized. If your circuit operates near the 300 mW limit, verify that substitute parts with lower ratings provide adequate thermal margin for your specific application conditions.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All recommended substitute parts listed in this document are RoHS3 compliant with MSL 1 (unlimited) moisture sensitivity level, matching the environmental compliance profile of the original PUMD9/ZLF.

Q: What is the difference between ACX114YUQ-13R and ACX114YUQ-7R?

A: Both parts are functionally identical with the same electrical specifications, transistor configuration, and package. The suffix designations (-13R vs. -7R) indicate different manufacturing or distribution codes but do not affect electrical performance or compatibility. Both are suitable direct replacements for PUMD9/ZLF.

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