BFP450H6433XTMA1 Equivalent & Substitute Parts

Part Overview

The BFP450H6433XTMA1 is an RF Transistor NPN manufactured by Infineon Technologies, designed for high-frequency applications up to 24GHz. This surface mount device operates at 5V with a maximum collector current of 100mA and power dissipation of 450mW. The part is currently in Active product status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct replacement in circuit designs where performance requirements are met.

Substiute Parts

BFP450H6433XTMA1

Infineon TechnologiesIn Stock: 1175BFP450H6433XTMA1 Datasheet

Current PartRFQ

2SC5490A-TL-H

onsemiIn Stock: 10982SC5490A-TL-H Datasheet

MFR RecommendedRFQ

BFS17NQTA

Diodes IncorporatedIn Stock: 24386BFS17NQTA Datasheet

MFR RecommendedRFQ

KST10MTF

onsemiIn Stock: 391133KST10MTF Datasheet

MFR RecommendedRFQ

MCH4009-TL-H

onsemiIn Stock: 34592MCH4009-TL-H Datasheet

MFR RecommendedRFQ

MMBT918LT1G

onsemiIn Stock: 60245MMBT918LT1G Datasheet

MFR RecommendedRFQ

MRF10031

MACOM Technology SolutionsIn Stock: 1490MRF10031 Datasheet

MFR RecommendedRFQ

MRF422

MACOM Technology SolutionsIn Stock: 1125MRF422 Datasheet

MFR RecommendedRFQ

NSVMMBTH10LT1G

onsemiIn Stock: 30250NSVMMBTH10LT1G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the BFP450H6433XTMA1 is based on the following critical parameters:

Primary Substitution Criteria:

• Transistor Type: NPN
• Voltage - Collector Emitter Breakdown (Max): 5V or higher
• Frequency - Transition: 24GHz or higher
• Power - Max: 450mW or higher
• Current - Collector (Ic) (Max): 100mA or higher
• Mounting Type: Surface Mount
• RoHS3 Compliance
• MSL: 1 (Unlimited)

Substitute parts are grouped based on frequency capability and power handling. Parts meeting or exceeding the 24GHz frequency requirement and 450mW power rating with compatible voltage ratings are classified as direct substitutes. Parts with lower frequency or power specifications are classified as limited-application substitutes suitable only for reduced-performance implementations.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitutes (Active Status, Frequency ≥ 24GHz):

MCH4009-TL-H is the primary direct substitute for the BFP450H6433XTMA1. This onsemi RF Transistor NPN operates at 25GHz, exceeding the main part's 24GHz frequency requirement. Both devices are in Active product status with RoHS3 compliance and MSL 1 rating. The MCH4009-TL-H is rated for 3.5V maximum collector-emitter breakdown voltage, which is lower than the main part's 5V rating. Power dissipation is 120mW compared to 450mW for the main part. Maximum collector current is 40mA versus 100mA. Package compatibility requires verification: MCH4009-TL-H uses SOT-343F while BFP450H6433XTMA1 uses PG-SOT343-3D.

Limited-Application Substitutes (Active Status, Frequency < 24GHz):

BFS17NQTA (Diodes Incorporated) operates at 3.2GHz with 310mW power rating and 50mA maximum collector current. This part is suitable for applications where 24GHz frequency capability is not required. Operating temperature range extends to -55°C, providing broader thermal coverage than the main part. Package is SOT-23-3, differing from the main part's SOT-343 package.

KST10MTF (onsemi) operates at 650MHz with 350mW power rating. This part is suitable only for low-frequency RF applications below 1GHz. Voltage rating of 25V exceeds the main part's 5V specification.

MMBT918LT1G (onsemi) operates at 600MHz with 225mW power rating and 50mA maximum collector current. Operating temperature range extends to -55°C. Package is SOT-23-3, differing from the main part's SOT-343 package.

Obsolete Status (Not Recommended for New Designs):

2SC5490A-TL-H (onsemi) is in Obsolete product status. Although it operates at 8GHz with 100mW power rating, the obsolete status makes it unsuitable for new design implementations. This part should be avoided in favor of Active status alternatives.

Chassis Mount Alternatives (Not Direct Substitutes):

MRF10031 and MRF422 are MACOM Technology Solutions RF Transistors with Chassis Mount packaging. These parts are not direct substitutes due to fundamentally different mounting type and package form factor compared to the surface mount BFP450H6433XTMA1.

Frequently Asked Questions (FAQ)

Q: Can MCH4009-TL-H replace BFP450H6433XTMA1 in all applications?

A: MCH4009-TL-H meets the frequency requirement (25GHz exceeds 24GHz) and is in Active product status with matching RoHS3 compliance and MSL 1 rating. However, the lower voltage rating (3.5V vs. 5V), reduced power dissipation (120mW vs. 450mW), and lower maximum collector current (40mA vs. 100mA) must be verified against circuit requirements. Package compatibility (SOT-343F vs. PG-SOT343-3D) requires PCB layout verification.

Q: Why are BFS17NQTA, KST10MTF, and MMBT918LT1G listed as substitutes if they operate at lower frequencies?

A: These parts are listed as limited-application substitutes because they meet the NPN transistor type, surface mount mounting type, RoHS3 compliance, and MSL 1 requirements. However, their frequency capabilities (3.2GHz, 650MHz, and 600MHz respectively) are significantly below the main part's 24GHz specification. They are suitable only for applications where the full 24GHz frequency capability is not required.

Q: What is the significance of the Obsolete product status for 2SC5490A-TL-H?

A: Obsolete product status indicates that the manufacturer has discontinued production and support for this part. While the part may still be available in inventory, using obsolete components in new designs creates long-term supply chain risk and limits access to technical support. Active status alternatives are recommended for new implementations.

Q: Are package differences between SOT-343 and SOT-23-3 significant for substitution?

A: Yes. SOT-343 and SOT-23-3 are different package outlines with different pin configurations and PCB footprints. Direct physical substitution on existing PCBs is not possible without redesign. Parts using different packages require PCB layout modification and re-qualification before implementation.

Q: What does MSL 1 (Unlimited) mean for component handling?

A: MSL 1 (Unlimited) indicates that the component has unlimited shelf life and does not require special moisture control during storage or handling. This applies to all listed parts, including the main part and all substitutes, ensuring consistent handling requirements across the substitution group.

Q: Can chassis mount parts like MRF10031 or MRF422 be used as substitutes?

A: No. Chassis mount parts use fundamentally different mounting methods and package forms compared to the surface mount BFP450H6433XTMA1. These parts are designed for through-hole or bolt-down mounting on heat sinks, not for surface mount PCB assembly. They are not suitable substitutes for this application.

Q: How should I verify compatibility before implementing a substitute part?

A: Verification must include: (1) Confirmation that voltage, frequency, power, and current ratings meet circuit requirements; (2) PCB footprint compatibility with the substitute package; (3) Thermal management adequacy for the substitute's power dissipation rating; (4) Noise figure and gain specifications alignment with signal chain requirements; (5) Operating temperature range coverage for the application environment.