BFS 17P E8211 Equivalent & Substitute Parts

Part Overview

The BFS 17P E8211 is an RF transistor NPN manufactured by Infineon Technologies, designed for high-frequency applications requiring surface mount integration. This active product operates at 1.4GHz transition frequency with a maximum power dissipation of 280mW in a compact SOT-23-3 package. The device is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance can be achieved within the specified parameter tolerances, accounting for differences in packaging, frequency response, and thermal characteristics. Alternative components may be required due to supply constraints, design revisions, or application-specific packaging requirements.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	15	V
Frequency - Transition	1.4	GHz
Power - Max	280	mW
Current - Collector (Ic) (Max)	25	mA
DC Current Gain (hFE) (Min) @ Ic, Vce	40 @ 2mA, 1V	—
Operating Temperature (Max)	150	°C (TJ)
Mounting Type	Surface Mount	—
Package / Case	TO-236-3, SC-59, SOT-23-3	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the BFS 17P E8211 is determined by the following critical parameters:

Electrical Compatibility Criteria:

Transistor Type: NPN configuration required
Voltage - Collector Emitter Breakdown (Max): Minimum 15V rating
Frequency - Transition: Minimum 600MHz (lower frequency acceptable for reduced-speed applications)
Power - Max: Minimum 200mW dissipation capability
Current - Collector (Ic) (Max): Minimum 25mA handling capacity
DC Current Gain (hFE): Minimum 20 at specified bias conditions

Mechanical & Compliance Criteria:

Mounting Type: Surface Mount or Through Hole (application-dependent)
RoHS Status: ROHS3 Compliant required
REACH Status: REACH Unaffected required

The 2N918 PBFREE meets these substitution criteria with equivalent voltage rating (15V), sufficient power handling (200mW), and compatible gain characteristics, despite lower transition frequency (600MHz) and different packaging (TO-72 Through Hole).

Parameter Comparison

Parameter	BFS 17P E8211	2N918 PBFREE	Unit
Manufacturer	Infineon Technologies	Central Semiconductor Corp	—
Transistor Type	NPN	NPN	—
Voltage - Collector Emitter Breakdown (Max)	15	15	V
Frequency - Transition	1.4	0.6	GHz
Power - Max	280	200	mW
Current - Collector (Ic) (Max)	25	50	mA
DC Current Gain (hFE) (Min) @ Ic, Vce	40 @ 2mA, 1V	20 @ 3mA, 1V	—
Operating Temperature (Max)	150	200	°C (TJ)
Mounting Type	Surface Mount	Through Hole	—
Package / Case	SOT-23-3	TO-72-4 Metal Can	—
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	—
REACH Status	REACH Unaffected	REACH Unaffected	—

Engineering Selection Recommendations

Primary Selection (BFS 17P E8211): The BFS 17P E8211 is the preferred component for new designs requiring surface mount RF transistor integration at 1.4GHz. This active product maintains full ROHS3 compliance and REACH unaffected status. The SOT-23-3 package provides space-efficient PCB integration with 280mW power handling and 1.4GHz transition frequency suitable for modern RF applications.

Substitute Selection (2N918 PBFREE): The 2N918 PBFREE serves as an electrical equivalent when through-hole mounting is required or when surface mount components are unavailable. This device maintains identical 15V breakdown voltage rating and ROHS3 compliance. The TO-72 package accommodates legacy board designs or applications requiring manual assembly. The 600MHz transition frequency is suitable for lower-frequency RF applications. Higher maximum collector current (50mA) and extended operating temperature range (−65°C to 200°C) provide additional design margin in specific thermal environments.

Compliance Verification: Both components satisfy ROHS3 and REACH requirements for unrestricted use in regulated markets. MSL 1 (Unlimited) rating on both devices eliminates moisture sensitivity constraints during storage and assembly.

Frequently Asked Questions (FAQ)

Q: Can the 2N918 PBFREE directly replace the BFS 17P E8211 in existing designs?

A: Direct replacement requires PCB layout modification due to package differences (SOT-23-3 surface mount versus TO-72 through-hole). Electrical substitution is valid for applications operating below 600MHz. Higher-frequency designs (above 600MHz) may experience performance degradation due to reduced transition frequency.

Q: What are the key electrical differences between these parts?

A: The BFS 17P E8211 operates at 1.4GHz transition frequency with 280mW power dissipation, while the 2N918 PBFREE operates at 600MHz with 200mW dissipation. Both maintain 15V breakdown voltage. The 2N918 PBFREE provides higher maximum collector current (50mA versus 25mA) and extended temperature range (−65°C to 200°C versus 150°C maximum).

Q: Are both parts suitable for RF applications?

A: Both devices are classified as RF transistors. The BFS 17P E8211 is optimized for higher-frequency RF applications (1.4GHz). The 2N918 PBFREE is suitable for RF applications operating at 600MHz and below.

Q: Do packaging differences affect electrical performance?

A: Packaging differences (surface mount SOT-23-3 versus through-hole TO-72) do not affect core electrical characteristics. PCB layout, trace impedance, and thermal management may require adjustment based on mounting type and application requirements.

Q: Are both components RoHS and REACH compliant?

A: Yes. Both the BFS 17P E8211 and 2N918 PBFREE are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for unrestricted distribution in regulated markets.

Q: What is the moisture sensitivity rating for both parts?

A: Both components carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints during storage, handling, or assembly processes.

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