DPLS325E-13 Equivalent & Substitute Parts

Part Overview

The DPLS325E-13 is a PNP bipolar junction transistor manufactured by Diodes Incorporated, rated for 25 V collector-emitter breakdown voltage and 3 A maximum collector current in a surface mount SOT-223-3 package. This device is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing design support and procurement continuity. Alternative parts must satisfy the electrical and mechanical requirements of the original specification while maintaining compatibility with existing circuit implementations.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Collector Current (Max)	3	A
Collector-Emitter Breakdown Voltage (Max)	25	V
Power Dissipation (Max)	1	W
Transition Frequency	100	MHz
DC Current Gain (hFE Min)	300	@ 10 mA, 2 V
Operating Temperature Range	−55 to 150	°C
Package Type	SOT-223-3	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution of the DPLS325E-13 is determined by strict equivalence in the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor polarity (PNP)
Collector current rating (3 A minimum)
Collector-emitter breakdown voltage (25 V minimum)
Transition frequency (100 MHz minimum)
DC current gain (300 minimum at specified conditions)
Operating temperature range (−55°C to 150°C minimum)
Surface mount package compatibility (SOT-223-3 or equivalent footprint)

Substitution Categories:

Direct Equivalents satisfy all primary criteria with identical or superior electrical performance and package compatibility. These parts are pin-compatible and functionally interchangeable without circuit modification.

Similar Equivalents meet all primary electrical criteria but employ different package types (SOT-89-3 versus SOT-223-3). These require PCB layout modification and are suitable only when package footprint change is acceptable.

Parametric Equivalents meet core electrical requirements but with performance variations in secondary parameters such as power dissipation, saturation voltage, or current gain specifications. These are suitable for applications where the secondary parameter variation does not impact circuit performance.

Parameter Comparison

Parameter	DPLS325E-13	FZT789ATA	FCX789ATA	PZT2907AT1G	PZT2907AT3G
Manufacturer	Diodes Inc.	Diodes Inc.	Diodes Inc.	onsemi	onsemi
Transistor Type	PNP	PNP	PNP	PNP	PNP
Ic (Max)	3 A	3 A	3 A	600 mA	600 mA
V(BR)CEO (Max)	25 V	25 V	25 V	60 V	60 V
Power (Max)	1 W	2 W	2 W	1.5 W	1.5 W
Frequency (Transition)	100 MHz	100 MHz	100 MHz	200 MHz	200 MHz
hFE (Min)	300 @ 10 mA, 2 V	300 @ 10 mA, 2 V	300 @ 10 mA, 2 V	100 @ 150 mA, 10 V	100 @ 150 mA, 10 V
Operating Temp Range	−55 to 150°C	−55 to 150°C	−55 to 150°C	−65 to 150°C	−65 to 150°C
Package	SOT-223-3	SOT-223-3	SOT-89-3	SOT-223	SOT-223
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

FZT789ATA (Diodes Incorporated) is the primary direct substitute for DPLS325E-13. This part maintains identical electrical specifications (3 A, 25 V, 100 MHz) and package footprint (SOT-223-3), with enhanced power dissipation capability (2 W versus 1 W). The FZT789ATA is in active production status, ensuring long-term availability and supply chain stability. Both parts are ROHS3 compliant with MSL rating 1, supporting equivalent environmental and reliability requirements.

FCX789ATA (Diodes Incorporated) provides electrical equivalence with identical current, voltage, and frequency ratings. This part differs in package type (SOT-89-3 versus SOT-223-3), requiring PCB layout modification. The FCX789ATA exhibits improved saturation voltage performance (320 mV versus 500 mV at specified conditions) and is available in higher inventory quantities. Selection of this part is appropriate only when package footprint change is feasible.

PZT2907AT1G and PZT2907AT3G (onsemi) are parametric equivalents suitable for applications where reduced collector current (600 mA versus 3 A) and elevated breakdown voltage (60 V versus 25 V) do not constrain circuit operation. These parts offer superior transition frequency (200 MHz) and extended low-temperature operating range (−65°C). Both are in active production with ROHS3 compliance. Selection is appropriate for low-current applications or designs requiring higher voltage margin.

All substitute parts maintain compliance with RoHS3 and REACH requirements, supporting equivalent regulatory and environmental standards.

Frequently Asked Questions (FAQ)

Q: Can FZT789ATA be used as a direct replacement for DPLS325E-13 without PCB modification?

A: Yes. FZT789ATA is pin-compatible and footprint-compatible with DPLS325E-13. Both use SOT-223-3 package with identical pinout. No PCB layout changes are required. The FZT789ATA provides superior power dissipation (2 W versus 1 W) and maintains all critical electrical specifications.

Q: What is the primary difference between FZT789ATA and FCX789ATA?

A: The primary difference is package type. FZT789ATA uses SOT-223-3 package (compatible with DPLS325E-13 footprint), while FCX789ATA uses SOT-89-3 package. Both provide identical collector current (3 A) and breakdown voltage (25 V) ratings. FCX789ATA requires PCB redesign if footprint change is not acceptable.

Q: Are PZT2907AT1G and PZT2907AT3G suitable for all DPLS325E-13 applications?

A: PZT2907AT1G and PZT2907AT3G are suitable only for applications where collector current does not exceed 600 mA. These parts are not suitable for applications requiring the full 3 A collector current capability of DPLS325E-13. Both parts provide higher breakdown voltage (60 V) and faster transition frequency (200 MHz), which may benefit certain circuit designs.

Q: What is the difference between PZT2907AT1G and PZT2907AT3G?

A: Both parts are electrically identical. The difference is packaging format: PZT2907AT1G is supplied in Cut Tape (CT) & Digi-Reel format, while PZT2907AT3G is supplied in Tape & Reel (TR) format. Selection depends on procurement and assembly requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (FZT789ATA, FCX789ATA, PZT2907AT1G, PZT2907AT3G) are ROHS3 compliant with MSL rating 1 (Unlimited), matching the compliance status of DPLS325E-13.

Q: What is the impact of higher power dissipation in FZT789ATA compared to DPLS325E-13?

A: FZT789ATA provides 2 W power dissipation versus 1 W in DPLS325E-13. This represents improved thermal capability and allows operation at higher power levels without thermal derating. For applications operating within the 1 W limit of DPLS325E-13, this difference has no negative impact and provides additional design margin.

Q: Can FCX789ATA be used in the same PCB footprint as DPLS325E-13?

A: No. FCX789ATA uses SOT-89-3 package while DPLS325E-13 uses SOT-223-3 package. These packages have different pinout arrangements and physical dimensions. PCB layout modification is required for FCX789ATA implementation.

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