FPN330 Equivalent & Substitute Parts

Part Overview

The FPN330 is an NPN bipolar junction transistor manufactured by onsemi, rated for 30V collector-emitter breakdown voltage and 3A maximum collector current. This component is designed for through-hole mounting in TO-226-3 and TO-92-3 long body packages. The FPN330 is classified as obsolete, making identification of functionally equivalent substitute components necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	30	V
Current - Collector (Ic) (Max)	3	A
Power - Max	1	W
Frequency - Transition	100	MHz
DC Current Gain (hFE) (Min)	100	—
Operating Temperature Range	-55 to 150	°C
Mounting Type	Through Hole	—

Substitute Part Grouping Explanation

Substitution of the FPN330 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

Transistor type must be NPN
Collector-emitter breakdown voltage must equal or exceed 30V
Maximum collector current must equal or exceed 3A
Transition frequency must equal or exceed 100MHz
DC current gain (hFE) must meet or exceed 100 at specified operating conditions
Power dissipation must equal or exceed 1W

Mechanical Compatibility Criteria:

Through-hole mounting configuration
Package footprint compatibility with TO-226-3, TO-92-3, or equivalent E-Line packages

The ZTX849 meets all electrical requirements with enhanced specifications and maintains through-hole mounting compatibility. The substitute part exceeds the original specifications in collector current capacity (5A vs. 3A), power dissipation (1.2W vs. 1W), and operating temperature range (-55°C to 200°C vs. -55°C to 150°C).

Parameter Comparison

Parameter	FPN330 (onsemi)	ZTX849 (Diodes Incorporated)	Unit
Transistor Type	NPN	NPN	—
Voltage - Collector Emitter Breakdown (Max)	30	30	V
Current - Collector (Ic) (Max)	3	5	A
Vce Saturation (Max)	500mV @ 100mA, 1A	220mV @ 200mA, 5A	mV
Current - Collector Cutoff (Max)	100	50	nA
DC Current Gain (hFE) (Min)	100 @ 100mA, 2V	100 @ 1A, 1V	—
Power - Max	1	1.2	W
Frequency - Transition	100	100	MHz
Operating Temperature Range	-55 to 150	-55 to 200	°C
Mounting Type	Through Hole	Through Hole	—
Package / Case	TO-226-3, TO-92-3 Long Body	E-Line-3 (TO-92 compatible)	—
Product Status	Obsolete	Active	—

Engineering Selection Recommendations

The ZTX849 is a direct functional substitute for the FPN330. The ZTX849 maintains identical voltage and frequency specifications while providing superior current handling capacity and thermal performance. The substitute part is classified as active product status, ensuring ongoing availability and supply chain continuity.

The ZTX849 carries RoHS3 compliance certification, whereas the FPN330 status is not specified. Both components are REACH unaffected and classified under identical HTSUS and ECCN codes. The E-Line package of the ZTX849 is mechanically compatible with TO-92 footprints, supporting direct board-level substitution in most applications.

The enhanced specifications of the ZTX849 (5A vs. 3A collector current, 1.2W vs. 1W power dissipation, and extended temperature range to 200°C) provide design margin for thermal and electrical stress conditions. The lower saturation voltage of the ZTX849 (220mV vs. 500mV) indicates improved switching efficiency.

Frequently Asked Questions (FAQ)

Q: Can the ZTX849 be used as a direct replacement for the FPN330 in existing designs?

A: Yes. The ZTX849 meets or exceeds all electrical specifications of the FPN330. The E-Line package is mechanically compatible with TO-92 footprints. No circuit modifications are required for substitution.

Q: What are the key differences between the FPN330 and ZTX849?

A: The ZTX849 provides higher collector current capacity (5A vs. 3A), greater power dissipation capability (1.2W vs. 1W), lower saturation voltage (220mV vs. 500mV), and extended operating temperature range (-55°C to 200°C vs. -55°C to 150°C). The ZTX849 is active product status, while the FPN330 is obsolete.

Q: Are there package compatibility concerns when substituting the ZTX849 for the FPN330?

A: The ZTX849 uses an E-Line package specified as TO-92 compatible. The FPN330 uses TO-226-3 and TO-92-3 long body packages. Both are through-hole configurations with compatible pin spacing and footprints for standard PCB layouts.

Q: What compliance certifications apply to the ZTX849?

A: The ZTX849 is RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS 8541.29.0075. Moisture sensitivity level is 1 (unlimited).

Q: Does the lower saturation voltage of the ZTX849 affect circuit performance?

A: The lower saturation voltage (220mV vs. 500mV) of the ZTX849 represents improved switching characteristics and reduced power dissipation in saturated switching applications. This is a performance enhancement that does not negatively impact circuit compatibility.

Q: What is the inventory status of these components?

A: The FPN330 has 1091 pieces in stock as new original inventory. The ZTX849 has 15819 pieces in stock as new original inventory, providing superior supply chain availability.

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