BFP405E6433HTMA1 Equivalent & Substitute Parts

Part Overview

The BFP405E6433HTMA1 is an RF transistor manufactured by Infineon Technologies, classified as an NPN bipolar junction transistor (BJT) designed for high-frequency applications. This device operates at a transition frequency of 25GHz with a maximum power dissipation of 75mW and is packaged in the SC-82A/SOT-343 surface mount configuration. The part is currently listed as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and procurement needs.

Substiute Parts

BFP405E6433HTMA1

Infineon TechnologiesIn Stock: 1113BFP405E6433HTMA1 Datasheet

Current PartRFQ

HFA3102BZ96

Renesas Electronics CorporationIn Stock: 3570HFA3102BZ96 Datasheet

MFR RecommendedRFQ

MAX2602ESA+T

Analog Devices Inc./Maxim IntegratedIn Stock: 3030MAX2602ESA+T Datasheet

MFR RecommendedRFQ

MCH4009-TL-H

onsemiIn Stock: 34592MCH4009-TL-H Datasheet

MFR RecommendedRFQ

MRF10031

MACOM Technology SolutionsIn Stock: 1490MRF10031 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BFP405E6433HTMA1 is determined by the following critical parameters: transistor type (NPN), transition frequency capability (25GHz minimum for direct replacement), maximum collector-emitter voltage rating, maximum power dissipation, collector current capacity, and surface mount packaging compatibility.

The substitute parts are grouped into two categories based on frequency matching:

Category 1: Direct Frequency Match (25GHz) Parts meeting or exceeding the 25GHz transition frequency requirement with compatible voltage and current ratings:

• MCH4009-TL-H (onsemi): 25GHz, 3.5V, 40mA, 120mW, SOT-343F package
• BFP405E6433HTMA1 original specifications: 25GHz, 5V, 25mA, 75mW, SOT-343 package

Category 2: Lower Frequency Alternatives Parts with reduced transition frequency but higher power handling or voltage ratings for applications where frequency requirements are less stringent:

• HFA3102BZ96 (Renesas Electronics): 10GHz, 12V, 30mA, 250mW, 14-SOIC package
• MAX2602ESA+T (Analog Devices/Maxim): 1GHz, 15V, 1.2A, 6.4W, 8-SOIC-EP package
• MRF10031 (MACOM): Chassis mount, 55V, 3A, 30W (not surface mount compatible)

Parameter Comparison

Engineering Selection Recommendations

For Direct Frequency Replacement (25GHz Applications):

The MCH4009-TL-H from onsemi is the primary substitute for the BFP405E6433HTMA1. Both devices operate at 25GHz transition frequency and are packaged in compatible SOT-343 family configurations (SOT-343F). The MCH4009-TL-H is currently in active production status with ROHS3 compliance and MSL 1 rating. The voltage rating of 3.5V is lower than the original 5V specification; however, the device accommodates the same collector current range (40mA maximum versus 25mA original) and provides superior noise performance (1.1dB @ 2GHz versus 1.25dB @ 1.8GHz). This substitute is suitable for applications where the 3.5V maximum voltage rating is compatible with circuit design requirements.

For Lower Frequency Applications (Below 25GHz):

The HFA3102BZ96 from Renesas Electronics operates at 10GHz and is suitable for applications where transition frequency requirements are reduced. This device provides higher voltage rating (12V), increased power dissipation capability (250mW), and higher collector current capacity (30mA). The 14-SOIC package requires PCB layout modification compared to the original SOT-343 footprint. MSL rating of 3 (168 Hours) requires controlled moisture exposure during storage and handling.

The MAX2602ESA+T from Analog Devices/Maxim is applicable only for applications operating at 1GHz or lower frequencies. This device offers significantly higher power handling (6.4W), voltage rating (15V), and collector current capacity (1.2A). The 8-SOIC-EP package is substantially larger than the original SOT-343 and requires significant PCB redesign.

For High-Power Applications:

The MRF10031 from MACOM is a chassis mount device unsuitable for surface mount applications. This part is listed only for reference in applications requiring 30W power dissipation and 55V voltage rating with fundamentally different mounting requirements.

All active substitute parts carry ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements.

Frequently Asked Questions (FAQ)

Q1: Can the MCH4009-TL-H directly replace the BFP405E6433HTMA1 in existing PCB designs?

The MCH4009-TL-H is packaged in SOT-343F, which is mechanically compatible with SOT-343 footprints. Pin configuration and electrical characteristics are compatible for 25GHz RF applications. The primary design consideration is the reduced maximum voltage rating (3.5V versus 5V). Verify that circuit bias voltages do not exceed 3.5V collector-emitter voltage during operation.

Q2: What are the package compatibility constraints when substituting the BFP405E6433HTMA1?

The original BFP405E6433HTMA1 uses SC-82A/SOT-343 surface mount packaging. The MCH4009-TL-H uses SOT-343F, which maintains the same footprint and pin spacing. The HFA3102BZ96 uses 14-SOIC packaging, requiring PCB layout modification and increased board space. The MAX2602ESA+T uses 8-SOIC-EP packaging, also requiring layout redesign. The MRF10031 uses 332A-03 chassis mount configuration, incompatible with surface mount applications.

Q3: How do noise figure specifications compare across substitute parts?

The BFP405E6433HTMA1 specifies 1.25dB noise figure at 1.8GHz. The MCH4009-TL-H provides 1.1dB at 2GHz, representing superior noise performance. The HFA3102BZ96 specifies 1.8dB to 2.1dB at 500MHz to 1GHz, indicating higher noise at lower frequencies. The MAX2602ESA+T specifies 3.3dB at 836MHz. For low-noise RF applications, the MCH4009-TL-H is the preferred substitute.

Q4: Are there voltage rating limitations when using the MCH4009-TL-H as a substitute?

The MCH4009-TL-H has a maximum collector-emitter breakdown voltage of 3.5V, compared to 5V for the original BFP405E6433HTMA1. Applications operating at voltages above 3.5V require alternative substitutes such as HFA3102BZ96 (12V) or MAX2602ESA+T (15V). Verify circuit bias conditions before substitution.

Q5: What moisture sensitivity considerations apply to substitute parts?

The BFP405E6433HTMA1 and MCH4009-TL-H both carry MSL 1 (Unlimited) ratings, requiring no special moisture control. The HFA3102BZ96 carries MSL 3 (168 Hours), requiring storage in dry conditions and limiting exposure time after package opening to 168 hours before reflow soldering. Implement appropriate moisture control procedures per IPC-A-610 standards when handling MSL 3 components.

Q6: Which substitute part is recommended for new designs?

For new designs requiring 25GHz operation, the MCH4009-TL-H from onsemi is the recommended substitute. This device is in active production, carries current compliance certifications (ROHS3, REACH Unaffected), maintains compatible packaging (SOT-343F), and provides superior noise performance. Verify that the 3.5V maximum voltage rating is compatible with circuit requirements.