Equivalent & Substitute Parts Reference for 2SC4511

Part Overview

The 2SC4511 from Sanken Electric USA Inc. is an NPN bipolar junction transistor (BJT) rated for 80 V collector-emitter breakdown voltage, 6 A maximum collector current, 30 W power dissipation, 20 MHz transition frequency, and packaged in a TO-220F through-hole case. It is designated as active and is RoHS compliant with a moisture sensitivity level (MSL) of 1. When sourcing components for design, repair, or manufacturing, it is often necessary to identify suitable substitute models strictly adhering to core electrical and mechanical parameters to ensure form, fit, and function.

Key Parameters

Parameter	Value
Transistor Type	NPN
Current - Collector (Ic) (Max)	6 A
Voltage - Collector Emitter Breakdown (Max)	80 V
Vce Saturation (Max) @ Ib, Ic	500mV @ 200mA, 2A
Current - Collector Cutoff (Max)	10µA (ICBO)
DC Current Gain (hFE) (Min)	50 @ 2A, 4V
Power - Max	30 W
Frequency - Transition	20MHz
Operating Temperature	150°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-220-3 Full Pack
Supplier Device Package	TO-220F
RoHS Status	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitute part selection is governed exclusively by the provided parameters: transistor type, maximum collector current, breakdown voltage, Vce saturation, cutoff current, DC current gain, power dissipation, transition frequency, operating temperature, mounting type, package/case, RoHS status, and moisture sensitivity level. Only parts with matching form factor (TO-220F or compatible through-hole package) and those designated as active, RoHS compliant, and with equivalent or superior electrical specifications, are considered valid substitutes.

Parameter Comparison

Manufacturer Part Number	Transistor Type	Ic (Max)	Vce (Max)	Vce Saturation (Max)	ICBO (Max)	hFE (Min)	Power (Max)	Frequency - Transition	Operating Temperature	Mounting Type	Package / Case	Supplier Device Package	RoHS Status	Product Status
2SC4511	NPN	6 A	80 V	500mV @ 200mA, 2A	10µA	50 @ 2A, 4V	30 W	20MHz	150°C (TJ)	Through Hole	TO-220-3 Full Pack	TO-220F	RoHS Compliant	Active
KSD1408YTU	NPN	4 A	80 V	1.5V @ 300mA, 3A	30µA	120 @ 500mA, 5V	25 W	8MHz	150°C (TJ)	Through Hole	TO-220-3 Full Pack	TO-220F-3	RoHS Status Not Listed	Active
MJF3055G	NPN	10 A	90 V	2.5V @ 3.3A, 10A	1µA	20 @ 4A, 4V	2 W	2MHz	-55°C ~ 150°C (TJ)	Through Hole	TO-220-3 Full Pack	TO-220FP	ROHS3 Compliant	Active

Engineering Selection Recommendations

Select substitute transistors only if product status is "Active." Confirm RoHS compliance for applications requiring hazardous substances restrictions. Only those parts listed with an unlimited moisture sensitivity level and through-hole mounting in a TO-220-3 Full Pack or functionally identical package are included. Compliance and inventory status are provided for reference; selection must align with required certifications.

Frequently Asked Questions (FAQ)

Q: What electrical parameters must match for a valid BJT substitute?
A: Substitute selection for BJTs requires matching transistor type, collector current, collector-emitter breakdown voltage, DC current gain, power dissipation, and transition frequency.

Q: Can substitute parts have different case styles?
A: Only through-hole devices in TO-220-3 Full Pack or compatible TO-220F packages qualify based on the provided mechanical parameters.

Q: How important is RoHS status in substitution?
A: RoHS compliance is mandatory in applications requiring restriction of hazardous substances. Reference each part’s compliance statement.

Q: Are substitute transistors with higher or lower frequency - transition acceptable?
A: Substitution is valid only among parts where transition frequency meets or exceeds the application requirement, as detailed in provided parameters.

Q: What is the role of operating temperature in part selection?
A: All substitutes must meet the specified operating temperature range of the original part for reliable function.

Q: Is the moisture sensitivity level (MSL) relevant to selection?
A: For through-hole, bulk-packaged BJTs, MSL 1 (Unlimited) ensures compatibility during assembly and storage.

Q: Why is “Active” product status necessary for electronic component substitution?
A: “Active” status ensures continued manufacturer support and availability for integration, replacement, or production use.

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