ZXTP25015DFH Equivalent & Substitute Parts

Part Overview

The ZXTP25015DFH is a Surface Mount PNP Bipolar Junction Transistor manufactured by Diodes Incorporated, rated for 15V collector-emitter breakdown voltage and 4A maximum collector current in a SOT-23-3 package. This device is classified as Obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity. The part operates across an extended temperature range of -55°C to 150°C and delivers 1.25W maximum power dissipation with a transition frequency of 295MHz.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Collector Current (Max)	4	A
Collector-Emitter Breakdown Voltage (Max)	15	V
Vce Saturation (Max)	220mV @ 500mA, 5A	—
Collector Cutoff Current (Max)	50nA	—
DC Current Gain (hFE Min)	300 @ 10mA, 2V	—
Power Dissipation (Max)	1.25	W
Transition Frequency	295	MHz
Operating Temperature Range	-55 to 150	°C
Package Type	SOT-23-3	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the ZXTP25015DFH is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: PNP configuration
Collector Current Rating: Minimum 4A
Collector-Emitter Breakdown Voltage: Minimum 15V
Package Type: SOT-23-3 (TO-236-3, SC-59)
Mounting Type: Surface Mount
Operating Temperature Range: -55°C to 150°C minimum
RoHS Compliance: ROHS3 Compliant

Parametric Equivalent Classification: Parts meeting all primary criteria with identical electrical specifications are classified as parametric equivalents. The ZXTP25015DFHTA from Diodes Incorporated satisfies all requirements with identical ratings and differs only in packaging format (Tape & Reel versus individual packaging).

Reduced-Rating Substitutes: Parts with lower collector current ratings (3A or 0.6A) or lower voltage ratings (12V, 40V, or 60V) are listed as available alternatives where application requirements permit operation within reduced electrical limits. These substitutes maintain SOT-23-3 package compatibility and surface mount characteristics but operate within constrained parameter windows.

Parameter Comparison

Part Number	Manufacturer	Ic (Max)	Vce(BR) (Max)	Vce Sat (Max)	hFE (Min)	Power (Max)	Freq (MHz)	Package	Status
ZXTP25015DFH	Diodes Inc.	4A	15V	220mV @ 500mA, 5A	300 @ 10mA, 2V	1.25W	295	SOT-23-3	Obsolete
ZXTP25015DFHTA	Diodes Inc.	4A	15V	220mV @ 500mA, 5A	300 @ 10mA, 2V	1.25W	295	SOT-23-3	Active
2SB1705TL	Rohm Semiconductor	3A	12V	250mV @ 30mA, 1.5A	270 @ 500mA, 2V	500mW	280	TSMT3	Active
CPH3106-TL-E	onsemi	3A	12V	165mV @ 30mA, 1.5A	200 @ 500mA, 2V	900mW	280	3-CPH	Obsolete
MMBT2907ALT1G	onsemi	600mA	60V	1.6V @ 50mA, 500mA	100 @ 150mA, 10V	300mW	200	SOT-23-3	Active
MMBT2907ALT3G	onsemi	600mA	60V	1.6V @ 50mA, 500mA	100 @ 150mA, 10V	300mW	200	SOT-23-3	Active
MMBT4403LT1G	onsemi	600mA	40V	750mV @ 50mA, 500mA	100 @ 150mA, 2V	300mW	200	SOT-23-3	Active
MMBT4403LT3G	onsemi	600mA	40V	750mV @ 50mA, 500mA	100 @ 150mA, 2V	300mW	200	SOT-23-3	Active

Engineering Selection Recommendations

Parametric Equivalent (Direct Replacement): The ZXTP25015DFHTA is the recommended direct replacement for the obsolete ZXTP25015DFH. This part maintains identical electrical specifications across all rated parameters and operates within the same temperature range. The primary distinction is product status (Active versus Obsolete) and packaging format (Tape & Reel availability). Both parts carry ROHS3 compliance and equivalent regulatory certifications. Selection of ZXTP25015DFHTA eliminates obsolescence risk while preserving full electrical compatibility.

Reduced-Rating Alternatives: The 2SB1705TL (Rohm Semiconductor, Active status) and CPH3106-TL-E (onsemi, Obsolete status) operate at reduced collector current (3A) and voltage (12V) ratings. These parts are suitable for applications where the design margin permits operation within these constrained limits. The 2SB1705TL is preferred over CPH3106-TL-E due to Active product status, ensuring long-term availability.

Lower Current Alternatives: The MMBT2907ALT1G, MMBT2907ALT3G, MMBT4403LT1G, and MMBT4403LT3G series are limited to 600mA maximum collector current and are applicable only to circuits designed for substantially lower current requirements. These parts maintain SOT-23-3 package compatibility and Active product status. The MMBT2907 variants support higher voltage operation (60V), while MMBT4403 variants operate at 40V. Selection among these alternatives depends on specific voltage and current requirements of the target application.

Packaging Considerations: The ZXTP25015DFHTA is available in Tape & Reel format, suitable for automated assembly processes. The 2SB1705TL utilizes TSMT3 packaging (SC-96), requiring verification of PCB footprint compatibility. The MMBT series parts are available in both Cut Tape and Tape & Reel formats, with part number suffixes (LT1G versus LT3G) indicating packaging variation.

Frequently Asked Questions (FAQ)

Q: Can ZXTP25015DFHTA be used as a direct replacement for ZXTP25015DFH? A: Yes. The ZXTP25015DFHTA is a parametric equivalent with identical electrical specifications. The primary difference is product status (Active versus Obsolete) and packaging format. Both parts are ROHS3 compliant and operate across -55°C to 150°C.

Q: What is the key limitation when using 2SB1705TL as a substitute? A: The 2SB1705TL operates at reduced ratings: 3A maximum collector current (versus 4A) and 12V maximum collector-emitter breakdown voltage (versus 15V). Applications must operate within these reduced electrical limits. Additionally, the TSMT3 package differs from SOT-23-3, requiring PCB footprint verification.

Q: Are MMBT2907 and MMBT4403 series suitable for high-current applications? A: No. These parts are limited to 600mA maximum collector current, approximately one-sixth the rating of the ZXTP25015DFH. They are applicable only to low-current signal switching applications. High-current designs require the ZXTP25015DFHTA or 2SB1705TL.

Q: What is the difference between MMBT4403LT1G and MMBT4403LT3G? A: Both parts are electrically identical. The primary difference is packaging format: LT1G indicates Cut Tape & Digi-Reel format, while LT3G indicates Tape & Reel format. Selection depends on assembly process requirements.

Q: Why is CPH3106-TL-E listed if it is Obsolete? A: CPH3106-TL-E is included for reference purposes as a known substitute with reduced ratings. However, its Obsolete status makes it unsuitable for new designs. The 2SB1705TL is the preferred Active alternative with similar electrical characteristics.

Q: Can MMBT2907ALT1G and MMBT2907ALT3G be used interchangeably? A: Yes, from an electrical standpoint. Both parts are identical in specifications. The distinction is packaging format: ALT1G is Cut Tape & Digi-Reel, while ALT3G is Tape & Reel. Selection depends on procurement and assembly requirements.

Q: What compliance certifications apply to all listed substitutes? A: All substitute parts listed carry ROHS3 compliance and REACH Unaffected status. All are classified under ECCN EAR99 for export purposes. Moisture Sensitivity Level is 1 (Unlimited) across all parts.

Q: Is the operating temperature range identical across all substitutes? A: The ZXTP25015DFH, ZXTP25015DFHTA, MMBT2907ALT1G, MMBT2907ALT3G, MMBT4403LT1G, and MMBT4403LT3G all operate across -55°C to 150°C. The 2SB1705TL and CPH3106-TL-E specify maximum operating temperature of 150°C without explicit minimum temperature specification in the provided data.

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