BFP 640 H6433 Equivalent & Substitute Parts

Part Overview

The BFP 640 H6433 is an RF transistor NPN designed for high-frequency applications up to 40GHz with a maximum power dissipation of 200mW. Manufactured by Infineon Technologies, this component is classified as obsolete, which necessitates identification of active equivalent and substitute parts for ongoing design requirements and procurement needs. The part is supplied in Surface Mount packaging (SOT-343) and operates at a maximum junction temperature of 150°C.

Substiute Parts

BFP 640 H6433

Infineon TechnologiesIn Stock: 1187BFP 640 H6433 Datasheet

Current PartRFQ

BFP640H6327XTSA1

Infineon TechnologiesIn Stock: 32002BFP640H6327XTSA1 Datasheet

MFR RecommendedRFQ

2SC4215-Y(TE85L,F)

Toshiba Semiconductor and StorageIn Stock: 26702SC4215-Y(TE85L,F) Datasheet

MFR RecommendedRFQ

MRF327

MACOM Technology SolutionsIn Stock: 1398MRF327 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the BFP 640 H6433 is determined by the following critical parameters:

Primary Substitution Criteria:

• Transistor Type: NPN configuration
• Voltage - Collector Emitter Breakdown (Max): 4.5V minimum
• Frequency - Transition: 40GHz or higher
• Power - Max: 200mW or greater
• Mounting Type: Surface Mount
• Package / Case: SOT-343 or equivalent form factor
• DC Current Gain (hFE): 110 or higher at specified bias conditions
• Current - Collector (Ic) Max: 50mA or greater

Substitute Parts Identified:

BFP640H6327XTSA1 (Infineon Technologies) — Direct equivalent with identical electrical specifications and active product status. Supplied in Tape & Reel packaging. Meets all primary substitution criteria with ROHS3 compliance.

2SC4215-Y(TE85L,F) (Toshiba Semiconductor and Storage) — Partial substitute with significant parameter deviations. Voltage rating (30V) exceeds requirement; frequency (550MHz) and power (100mW) are substantially lower. Not suitable for 40GHz RF applications.

MRF327 (MACOM Technology Solutions) — Partial substitute with major parameter deviations. Chassis Mount configuration differs from Surface Mount requirement. Frequency and noise figure data not provided. Power rating (80W) and current rating (9A) indicate different application class. Not suitable for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

Recommended Primary Substitute: BFP640H6327XTSA1

The BFP640H6327XTSA1 manufactured by Infineon Technologies is the direct equivalent for the obsolete BFP 640 H6433. This part maintains identical electrical specifications across all critical parameters: 4.5V breakdown voltage, 40GHz transition frequency, 200mW power dissipation, 50mA maximum collector current, and SOT-343 Surface Mount packaging. The part is in active production status with 31,947 units in stock. ROHS3 compliance and REACH Unaffected status confirm regulatory alignment. The Tape & Reel packaging format supports automated assembly processes. This substitute requires no circuit redesign and provides direct pin-for-pin compatibility.

Secondary Substitutes: Not Recommended

The 2SC4215-Y(TE85L,F) and MRF327 do not meet the electrical requirements for direct substitution. The 2SC4215-Y operates at 550MHz with 100mW power, insufficient for 40GHz RF applications. The MRF327 is a Chassis Mount device rated for 80W power and 9A current, representing a different application class entirely. Both parts deviate significantly from the frequency, power, and packaging specifications of the BFP 640 H6433.

Frequently Asked Questions (FAQ)

Q: Can the BFP640H6327XTSA1 be used as a direct replacement for the BFP 640 H6433?

A: Yes. The BFP640H6327XTSA1 is electrically and mechanically equivalent to the BFP 640 H6433. Both parts share identical voltage ratings (4.5V), frequency capability (40GHz), power dissipation (200mW), collector current (50mA), DC current gain (110 @ 30mA, 3V), and SOT-343 Surface Mount packaging. No circuit modifications are required.

Q: What is the primary difference between BFP640H6327XTSA1 and the original BFP 640 H6433?

A: The BFP640H6327XTSA1 is in active production status, whereas the BFP 640 H6433 is obsolete. The substitute part is supplied in Tape & Reel packaging format and carries ROHS3 compliance certification. Electrical performance is identical.

Q: Why are 2SC4215-Y(TE85L,F) and MRF327 listed as substitutes if they do not meet specifications?

A: These parts are listed based on historical cross-reference data provided in the original part documentation. However, they do not satisfy the electrical requirements for direct substitution in 40GHz RF applications. The 2SC4215-Y is limited to 550MHz operation, and the MRF327 is a high-power Chassis Mount device designed for different applications. These parts should not be selected for BFP 640 H6433 replacement.

Q: Are there any package compatibility concerns with BFP640H6327XTSA1?

A: No. Both the BFP 640 H6433 and BFP640H6327XTSA1 use the SOT-343 Surface Mount package (SC-82A). PCB footprints and assembly processes remain unchanged.

Q: What is the inventory status for BFP640H6327XTSA1?

A: 31,947 units are in stock as new original components, ensuring availability for production requirements.

Q: Does BFP640H6327XTSA1 meet environmental and regulatory standards?

A: Yes. The BFP640H6327XTSA1 is ROHS3 compliant and REACH Unaffected. Moisture Sensitivity Level is 1 (Unlimited), matching the original part specification.