BFS17WH6393XTSA1 Equivalent & Substitute Parts

Part Overview

The BFS17WH6393XTSA1 is an RF Transistor NPN manufactured by Infineon Technologies, designed for high-frequency applications requiring low-noise performance. This device operates at 1.4GHz transition frequency with a maximum power dissipation of 280mW and is housed in a compact SC-70/SOT-323 surface mount package. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are necessary when addressing supply constraints, obsolescence concerns, or when alternative manufacturers' components meet the electrical and mechanical specifications required for the application.

Substiute Parts

BFS17WH6393XTSA1

Infineon TechnologiesIn Stock: 723BFS17WH6393XTSA1 Datasheet

Current PartRFQ

2SC5347AE-TD-E

onsemiIn Stock: 41392SC5347AE-TD-E Datasheet

MFR RecommendedRFQ

MAX2601ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2334MAX2601ESA+ Datasheet

MFR RecommendedRFQ

SMMBTH10-4LT3G

onsemiIn Stock: 1081SMMBTH10-4LT3G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the BFS17WH6393XTSA1 is determined by the following critical parameters:

Primary Substitution Criteria:

• Transistor Type: NPN configuration required
• Voltage Rating: Collector-Emitter breakdown voltage must be ≥15V
• Frequency Performance: Transition frequency must support 1.4GHz operation
• Power Dissipation: Maximum power rating must be ≥280mW
• DC Current Gain: hFE minimum must support required bias conditions
• Maximum Collector Current: Must accommodate 25mA operation
• Operating Temperature: Must sustain 150°C junction temperature
• Mounting Type: Surface mount configuration required
• Compliance: RoHS3 compliance and MSL 1 rating required

Identified Substitute Parts:

Group 1 - Direct Electrical Compatibility (15V Rating, 1GHz+ Frequency):

• MAX2601ESA+ (Analog Devices Inc./Maxim Integrated): Exceeds power rating (6.4W), higher frequency capability (1GHz), larger package format (8-SOIC-EP), Active status
• SMMBTH10-4LT3G (onsemi): Lower frequency (800MHz), reduced power (225mW), different package (SOT-23-3), Active status

Group 2 - Higher Performance Alternative (12V Rating, 4.7GHz Frequency):

• 2SC5347AE-TD-E (onsemi): Reduced voltage rating (12V), significantly higher frequency (4.7GHz), higher power (1.3W), different package (TO-243AA), Obsolete status

Parameter Comparison

Engineering Selection Recommendations

MAX2601ESA+ Selection Criteria: This substitute is suitable when application requirements permit package format change from SOT-323 to 8-SOIC-EP. The part maintains identical 15V voltage rating and exceeds frequency performance at 1GHz. Power dissipation capability (6.4W) significantly exceeds the 280mW requirement, providing thermal margin. Active product status ensures long-term availability. RoHS3 compliance and MSL 1 rating match the original specification. DC current gain (100 @ 250mA, 3V) and maximum collector current (1.2A) both exceed original requirements. Noise figure (3.3dB @ 836MHz) is comparable to the original (3.5dB @ 800MHz). PCB layout modifications are required due to package footprint differences.

SMMBTH10-4LT3G Selection Criteria: This substitute is applicable when frequency requirements can be reduced to 800MHz operation. The part maintains 15V+ voltage rating (25V maximum) and Active product status. Power dissipation (225mW) approaches but remains below the original 280mW specification. RoHS3 compliance and MSL 1 rating are maintained. DC current gain (120 @ 4mA, 10V) exceeds original specification. Package format (SOT-23-3) differs from SOT-323, requiring PCB layout modification. Noise figure is not specified for this part. Maximum collector current is not specified. This option is suitable for lower-frequency RF applications.

2SC5347AE-TD-E Selection Criteria: This substitute presents significant trade-offs and is not recommended for direct replacement. Although it offers superior frequency performance (4.7GHz) and power capability (1.3W), the reduced voltage rating (12V) falls below the original 15V specification. Obsolete product status creates long-term supply risk and limits future availability. Package format (TO-243AA) differs substantially from SOT-323. Selection of this part requires verification that application voltage requirements do not exceed 12V and that frequency performance enhancement justifies obsolescence risk.

Frequently Asked Questions (FAQ)

Q1: Can MAX2601ESA+ directly replace BFS17WH6393XTSA1 without circuit modification?

A: Electrical substitution is feasible; however, package format change from SOT-323 to 8-SOIC-EP requires PCB layout modification. Pin configuration differs between packages. Circuit board trace routing, component placement, and thermal management design must be re-evaluated. Electrical performance parameters (voltage, frequency, gain, noise figure) are compatible with the original application requirements.

Q2: What are the key limitations of SMMBTH10-4LT3G as a substitute?

A: The primary limitation is reduced transition frequency (800MHz versus 1.4GHz). This part is suitable only for applications operating at or below 800MHz. Power dissipation rating (225mW) is marginally lower than the original (280mW), reducing thermal margin. Noise figure specification is not provided, preventing direct noise performance comparison. Maximum collector current is not specified. Package format (SOT-23-3) differs from the original SOT-323.

Q3: Why is 2SC5347AE-TD-E listed as a substitute despite Obsolete status?

A: This part is included in the substitute list based on provided manufacturer data indicating it as a cross-reference option. However, Obsolete product status presents significant supply chain risk. The reduced voltage rating (12V versus 15V) makes it unsuitable for applications requiring the full 15V specification. This part should be selected only when application voltage requirements are confirmed below 12V and when frequency performance enhancement (4.7GHz) justifies the obsolescence risk and package format change.

Q4: Are all substitute parts RoHS3 compliant and MSL 1 rated?

A: Yes. All identified substitute parts (MAX2601ESA+, SMMBTH10-4LT3G, and 2SC5347AE-TD-E) maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original BFS17WH6393XTSA1 specification.

Q5: What package considerations must be addressed when substituting these parts?

A: The BFS17WH6393XTSA1 uses SC-70/SOT-323 package. MAX2601ESA+ requires 8-SOIC-EP footprint (larger package). SMMBTH10-4LT3G requires SOT-23-3/TO-236 footprint (different pin spacing). 2SC5347AE-TD-E requires TO-243AA footprint. Each package change necessitates PCB redesign, including trace routing, component placement, and thermal via placement. Pin-to-pin electrical connections must be verified against each package datasheet.

Q6: How do noise figure specifications compare across substitute options?

A: BFS17WH6393XTSA1 specifies 3.5dB @ 800MHz. MAX2601ESA+ specifies 3.3dB @ 836MHz, representing comparable performance. SMMBTH10-4LT3G does not provide noise figure specification. 2SC5347AE-TD-E specifies 1.8dB @ 1GHz, indicating superior noise performance but at reduced voltage rating. Noise figure comparison is valid only when frequency of measurement is considered.