PN3563_D75Z RF Transistor NPN Equivalent & Substitute Parts

Part Overview

The PN3563_D75Z is an RF transistor NPN manufactured by onsemi, rated for 15V collector-emitter breakdown voltage with a transition frequency of 1.5GHz and maximum power dissipation of 350mW. This component is packaged in a through-hole TO-92-3 configuration. The part is currently listed as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	PN3563_D75Z
Manufacturer	onsemi
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	15V
Frequency - Transition	1.5GHz
Power - Max	350mW
Current - Collector (Ic) (Max)	50mA
DC Current Gain (hFE) (Min)	20 @ 8mA, 10V
Operating Temperature	-55°C ~ 150°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-92-3
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the PN3563_D75Z RF transistor NPN is determined by the following critical parameters:

Primary Substitution Criteria:

Transistor Type: NPN configuration required
Voltage Rating: Collector-emitter breakdown voltage must equal or exceed 15V
Frequency Performance: Transition frequency must support 1.5GHz operation
Power Dissipation: Maximum power rating must accommodate 350mW
Current Handling: Collector current capability must meet or exceed 50mA
Operating Temperature Range: Must support -55°C to 150°C junction temperature

Secondary Considerations:

Mounting Type: Through-hole preferred for direct replacement; surface-mount alternatives require board redesign
Package Compatibility: TO-92-3 through-hole package is primary; alternative packages require PCB layout modification
DC Current Gain: hFE characteristics must support circuit biasing requirements

The substitute parts listed below meet the core electrical requirements for RF transistor NPN operation. However, mounting type and package differences necessitate evaluation based on specific application requirements.

Parameter Comparison

Parameter	PN3563_D75Z	BFR340FH6327XTSA1	BFP640FESDH6327XTSA1	BFP420H6801XTSA1	BFR460L3E6327XTMA1	BFR840L3RHESDE6327XTSA1	MRF455	BFP183WH6327XTSA1	BFP405H6740XTSA1
Manufacturer	onsemi	Infineon Technologies	Infineon Technologies	Infineon Technologies	Infineon Technologies	Infineon Technologies	MACOM Technology Solutions	Infineon Technologies	Infineon Technologies
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	15V	9V	4.7V	5V	5.8V	2.6V	18V	12V	5V
Frequency - Transition	1.5GHz	14GHz	46GHz	25GHz	22GHz	75GHz	-	8.5GHz	25GHz
Power - Max	350mW	75mW	200mW	160mW	200mW	75mW	60W	450mW	75mW
Current - Collector (Ic) (Max)	50mA	20mA	50mA	35mA	50mA	35mA	15A	65mA	25mA
DC Current Gain (hFE) (Min)	20 @ 8mA, 10V	90 @ 5mA, 3V	110 @ 30mA, 3V	60 @ 20mA, 4V	90 @ 20mA, 3V	150 @ 10mA, 1.8V	10 @ 5A, 5V	70 @ 15mA, 8V	60 @ 5mA, 4V
Operating Temperature	-55°C ~ 150°C (TJ)	150°C (TJ)	150°C (TJ)	150°C (TJ)	150°C (TJ)	150°C (TJ)	-	150°C (TJ)	150°C (TJ)
Mounting Type	Through Hole	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Chassis Mount	Surface Mount	Surface Mount
Package / Case	TO-92-3	SOT-723	4-SMD, Flat Leads	SC-82A, SOT-343	SC-101, SOT-883	SC-101, SOT-883	211-07	SC-82A, SOT-343	SC-82A, SOT-343
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Voltage Rating Considerations: The PN3563_D75Z operates at 15V maximum collector-emitter breakdown voltage. Most substitute parts operate at lower voltage ratings (2.6V to 12V), with the exception of MRF455 at 18V. Selection of a substitute with lower voltage rating requires verification that circuit operating conditions do not exceed the substitute part's voltage specification.

Frequency and Power Trade-offs: The original PN3563_D75Z is rated for 1.5GHz transition frequency with 350mW power dissipation. Substitute parts demonstrate significantly higher frequency capabilities (8.5GHz to 75GHz) with varying power ratings. Higher frequency parts may introduce unnecessary complexity for applications requiring only 1.5GHz operation. Lower power-rated substitutes require thermal management verification.

Mounting Type Compatibility: The PN3563_D75Z is a through-hole component. All Infineon substitute parts are surface-mount devices, requiring PCB redesign. The MRF455 is a chassis-mount component suitable for high-power applications. Through-hole replacement is not available among the listed substitutes.

Product Status and Compliance: All substitute parts carry Active product status with RoHS3 compliance and REACH Unaffected designation, ensuring long-term availability and regulatory compliance. The original PN3563_D75Z is obsolete.

Current Handling: The PN3563_D75Z supports 50mA maximum collector current. BFP640FESDH6327XTSA1, BFR460L3E6327XTMA1, and BFP183WH6327XTSA1 meet or exceed this specification. Other substitutes operate at lower current ratings and require circuit current verification.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the PN3563_D75Z with any of the listed substitute parts?

A: Direct replacement is not possible due to mounting type differences. The PN3563_D75Z is a through-hole TO-92-3 component, while all listed substitutes are surface-mount or chassis-mount devices. PCB redesign is required for any substitute implementation.

Q: Which substitute part most closely matches the PN3563_D75Z electrical specifications?

A: BFR340FH6327XTSA1 provides the closest voltage rating match at 9V (versus 15V original) and operates at 14GHz transition frequency, exceeding the 1.5GHz requirement. However, it is limited to 20mA collector current and 75mW power dissipation, both lower than the original specification.

Q: What is the impact of using a higher frequency-rated transistor in a 1.5GHz application?

A: Higher frequency-rated transistors (such as BFP640FESDH6327XTSA1 at 46GHz or BFR840L3RHESDE6327XTSA1 at 75GHz) will function in 1.5GHz applications. However, circuit design must account for different impedance characteristics, gain profiles, and noise figures at the lower operating frequency.

Q: Are there voltage rating limitations when substituting the PN3563_D75Z?

A: Yes. The original part is rated for 15V maximum collector-emitter breakdown voltage. Substitutes with lower voltage ratings (BFP640FESDH6327XTSA1 at 4.7V, BFR840L3RHESDE6327XTSA1 at 2.6V) require circuit verification to ensure operating voltages remain within the substitute part's specification. MRF455 at 18V exceeds the original rating and is suitable for higher voltage applications.

Q: What are the thermal operating range differences?

A: The PN3563_D75Z operates from -55°C to 150°C junction temperature. Most Infineon substitutes specify only the maximum temperature of 150°C without a minimum specification. Applications requiring -55°C operation must verify substitute part performance at low temperatures through manufacturer documentation.

Q: Is the MRF455 a suitable substitute for the PN3563_D75Z?

A: MRF455 is an NPN transistor with 18V voltage rating and 15A collector current capability, designed for high-power applications. It is not suitable as a direct substitute due to its chassis-mount package, significantly higher power rating (60W versus 350mW), and different application class. It is intended for power amplification rather than RF signal processing.

Q: What packaging considerations apply to surface-mount substitutes?

A: All Infineon substitutes require surface-mount assembly capability. BFP183WH6327XTSA1, BFP405H6740XTSA1, and BFP420H6801XTSA1 use SOT-343 packages. BFR340FH6327XTSA1 uses SOT-723. BFP640FESDH6327XTSA1 uses 4-TSFP. BFR460L3E6327XTMA1 and BFR840L3RHESDE6327XTSA1 use SOT-883. PCB layout and assembly process must be adapted accordingly.

Q: Which substitute offers the best power dissipation match?

A: BFP183WH6327XTSA1 provides the highest power rating at 450mW, exceeding the original 350mW specification. BFP640FESDH6327XTSA1 and BFR460L3E6327XTMA1 both offer 200mW, suitable for moderate power applications. Lower-rated parts (75mW to 160mW) require thermal analysis for applications approaching the original power specification.

Q: Are all substitute parts RoHS compliant?

A: All Infineon and MACOM substitute parts listed are RoHS3 compliant with REACH Unaffected status, meeting current regulatory requirements for electronic component procurement and assembly.

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