2SD1805F-E Equivalent & Substitute Parts

Part Overview

The 2SD1805F-E is an NPN bipolar junction transistor manufactured by onsemi, rated for 20V collector-emitter breakdown voltage and 5A maximum collector current. This component is designed for through-hole mounting applications and delivers 1W maximum power dissipation with a transition frequency of 120MHz. The part is currently classified as obsolete, making identification of equivalent and substitute components essential for design continuity and procurement planning.

Key Parameters

Parameter	Value
Transistor Type	NPN
Current - Collector (Ic) (Max)	5 A
Voltage - Collector Emitter Breakdown (Max)	20 V
Vce Saturation (Max) @ Ib, Ic	500mV @ 60mA, 3A
Current - Collector Cutoff (Max)	100nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce	160 @ 500mA, 2V
Power - Max	1 W
Frequency - Transition	120MHz
Operating Temperature (TJ)	150°C
Mounting Type	Through Hole
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA

Substitute Part Grouping Explanation

Substitution of the 2SD1805F-E is determined by electrical parameter compatibility within the following criteria:

Primary Electrical Parameters:

Transistor Type: NPN
Maximum Collector Current (Ic): Equal to or greater than 5A
Maximum Collector-Emitter Breakdown Voltage (Vce): Equal to or greater than 20V
DC Current Gain (hFE): Minimum 160 at specified operating conditions
Power Dissipation: Equal to or greater than 1W
Transition Frequency: Equal to or greater than 120MHz

Secondary Considerations:

Saturation voltage characteristics
Collector cutoff current specifications
Operating temperature range
Mounting technology (through-hole or surface-mount)
Package form factor

The substitute parts listed below meet or exceed the electrical specifications of the 2SD1805F-E while accommodating different mounting technologies and package configurations.

Parameter Comparison

Parameter	2SD1805F-E	2SD1805F-TL-E	PHPT60406NYX
Manufacturer	onsemi	onsemi	Nexperia USA Inc.
Transistor Type	NPN	NPN	NPN
Current - Collector (Ic) (Max)	5 A	5 A	6 A
Voltage - Collector Emitter Breakdown (Max)	20 V	20 V	40 V
Vce Saturation (Max) @ Ib, Ic	500mV @ 60mA, 3A	500mV @ 60mA, 3A	380mV @ 300mA, 6A
Current - Collector Cutoff (Max)	100nA (ICBO)	100nA (ICBO)	100nA
DC Current Gain (hFE) (Min) @ Ic, Vce	160 @ 500mA, 2V	160 @ 500mA, 2V	230 @ 500mA, 2V
Power - Max	1 W	1 W	1.35 W
Frequency - Transition	120MHz	120MHz	153MHz
Operating Temperature (TJ)	150°C	150°C	175°C
Mounting Type	Through Hole	Surface Mount	Surface Mount
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA	TO-252-3, DPAK (2 Leads + Tab), SC-63	SC-100, SOT-669
Product Status	Obsolete	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

2SD1805F-TL-E (onsemi): This part is the direct electrical equivalent of the 2SD1805F-E, sharing identical electrical specifications including collector current, breakdown voltage, saturation characteristics, and gain parameters. The primary difference is the mounting technology: 2SD1805F-TL-E is surface-mount (DPAK/TO-252-3) versus through-hole for the original part. This substitute is active in production status and ROHS3 compliant, providing long-term availability and regulatory compliance. Selection of this part requires PCB redesign to accommodate surface-mount packaging.

PHPT60406NYX (Nexperia USA Inc.): This part exceeds the electrical specifications of the 2SD1805F-E across multiple parameters: 6A collector current (versus 5A), 40V breakdown voltage (versus 20V), 1.35W power rating (versus 1W), and 153MHz transition frequency (versus 120MHz). The DC current gain is higher at 230 minimum. This part is surface-mount only (LFPAK56/Power-SO8 package) and carries automotive qualification (AEC-Q100) with a higher operating temperature of 175°C. Selection of this part is appropriate for applications requiring enhanced performance margins and automotive-grade reliability, but requires PCB redesign for the different package footprint.

Frequently Asked Questions (FAQ)

Q: Can the 2SD1805F-E be directly replaced with the 2SD1805F-TL-E in existing through-hole designs?

A: The 2SD1805F-TL-E is electrically equivalent but requires PCB redesign due to different mounting technology. The 2SD1805F-E uses through-hole mounting (TO-251-3), while the 2SD1805F-TL-E uses surface-mount technology (DPAK/TO-252-3). Direct socket substitution is not possible without board modification.

Q: What are the advantages of using PHPT60406NYX as a substitute?

A: The PHPT60406NYX provides higher electrical performance margins with 6A collector current, 40V breakdown voltage, and 1.35W power dissipation compared to the 2SD1805F-E specifications of 5A, 20V, and 1W respectively. It also features automotive-grade qualification (AEC-Q100) and higher operating temperature capability (175°C). These characteristics make it suitable for demanding applications requiring enhanced reliability and performance headroom.

Q: Are all substitute parts RoHS compliant?

A: The 2SD1805F-TL-E and PHPT60406NYX are both ROHS3 compliant. The original 2SD1805F-E does not specify RoHS status in the provided data.

Q: What is the impact of different package types on circuit design?

A: Package differences require PCB layout modifications. The 2SD1805F-E (TO-251-3 through-hole) has different pin spacing and mounting requirements than the 2SD1805F-TL-E (DPAK/TO-252-3 surface-mount) and PHPT60406NYX (LFPAK56/Power-SO8 surface-mount). Each package has distinct thermal characteristics and PCB footprint requirements that must be accommodated in the design.

Q: Can PHPT60406NYX be used in applications designed for 20V operation?

A: Yes. The PHPT60406NYX is rated for 40V maximum breakdown voltage, which exceeds the 20V requirement of the original design. The part operates safely at 20V with additional voltage margin. However, the different package type and thermal characteristics require PCB redesign and thermal analysis.

Q: What is the inventory status of these substitute parts?

A: The 2SD1805F-TL-E has 50,100 pieces in stock (active production status). The PHPT60406NYX has 3,644 pieces in stock (active production status). The original 2SD1805F-E has 1,052 pieces in stock but is obsolete.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message