2SC4226-T1-A RF Transistor NPN Equivalent & Substitute Parts

Part Overview

The 2SC4226-T1-A is an RF transistor NPN manufactured by CEL, designed for RF applications operating at 4.5GHz with a maximum collector-emitter breakdown voltage of 12V and 150mW power dissipation in a surface mount SOT-323 package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain compatibility with RF frequency performance, voltage ratings, and surface mount packaging requirements.

Substiute Parts

2SC4226-T1-A

CELIn Stock: 213232SC4226-T1-A Datasheet

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2SC5347AE-TD-E

onsemiIn Stock: 41392SC5347AE-TD-E Datasheet

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BFP740FESDH6327XTSA1

Infineon TechnologiesIn Stock: 6064BFP740FESDH6327XTSA1 Datasheet

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BFR93AWH6327XTSA1

Infineon TechnologiesIn Stock: 35409BFR93AWH6327XTSA1 Datasheet

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HFA3134IHZ96

IntersilIn Stock: 19872HFA3134IHZ96 Datasheet

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SMMBTH10-4LT3G

onsemiIn Stock: 1081SMMBTH10-4LT3G Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the 2SC4226-T1-A is based on the following critical parameters:

Primary Substitution Criteria:

• Transistor Type: NPN configuration required
• Voltage Rating: Minimum 12V collector-emitter breakdown voltage
• Frequency Performance: Minimum 4.5GHz transition frequency
• Power Dissipation: Minimum 150mW capability
• Mounting: Surface mount technology
• Package Compatibility: SOT-323 or equivalent small-outline packages

Grouping Strategy:

Group 1 - Direct Package Compatibility (SOT-323): Parts maintaining the same SOT-323 package footprint with equivalent or superior electrical specifications.

Group 2 - Alternative Package with Enhanced Performance: Parts in different surface mount packages (PCP, 4-TSFP) offering superior frequency response or power handling while maintaining voltage and current compatibility.

Group 3 - Functional Equivalents with Trade-offs: Parts meeting core RF requirements but with different package or current rating characteristics.

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Recommended Direct Substitute:

BFR93AWH6327XTSA1 (Infineon Technologies) is the primary recommended substitute. This part maintains identical package compatibility (SOT-323), meets or exceeds all critical electrical parameters (12V breakdown voltage, 6GHz frequency, 300mW power), and is currently in active production status with ROHS3 compliance. The part is available in high inventory (35,300 pcs) and provides superior noise figure performance (1.5-2.6dB vs 1.2dB) with enhanced gain characteristics (10.5-15.5dB).

Tier 2 - Alternative with Enhanced Performance:

2SC5347AE-TD-E (onsemi) offers superior power dissipation (1.3W) and collector current (150mA) in a TO-243AA package. While package differs from SOT-323, this part is suitable for applications requiring higher power handling. Frequency performance (4.7GHz) and voltage rating (12V) are equivalent. Note: Product status is obsolete.

Tier 3 - High-Frequency Alternative:

BFP740FESDH6327XTSA1 (Infineon Technologies) is suitable for applications requiring significantly higher frequency performance (47GHz). However, this part has reduced voltage rating (4.7V) and collector current (45mA), limiting its use to lower-power RF applications. Active production status and ROHS3 compliance are confirmed.

Not Recommended for Direct Substitution:

HFA3134IHZ96 (Intersil) is a dual NPN configuration in SOT-23-6 package with reduced collector current (26mA) and voltage rating (9V). Suitable only for specialized dual-transistor applications.

SMMBTH10-4LT3G (onsemi) operates at 800MHz, significantly below the 4.5GHz requirement, and is not suitable for this RF application despite adequate voltage and power ratings.

Frequently Asked Questions (FAQ)

Q1: Can BFR93AWH6327XTSA1 be used as a direct drop-in replacement for 2SC4226-T1-A?

A: Yes. BFR93AWH6327XTSA1 maintains identical SOT-323 package footprint and pinout compatibility. All critical electrical parameters (12V breakdown voltage, 4.5GHz+ frequency, 150mW+ power) are met or exceeded. PCB layout and circuit design require no modification.

Q2: What are the key differences between 2SC4226-T1-A and 2SC5347AE-TD-E?

A: Primary differences are package type (SOT-323 vs TO-243AA) and power dissipation (150mW vs 1.3W). The 2SC5347AE-TD-E provides higher power handling and collector current (150mA vs 100mA) but requires different PCB footprint. Frequency performance (4.7GHz vs 4.5GHz) and voltage rating (12V) are equivalent.

Q3: Is BFP740FESDH6327XTSA1 suitable for 4.5GHz RF applications?

A: BFP740FESDH6327XTSA1 exceeds frequency requirements (47GHz vs 4.5GHz) but has reduced voltage rating (4.7V vs 12V) and collector current (45mA vs 100mA). Use only in applications where lower voltage and current are acceptable. Package differs (4-TSFP vs SOT-323).

Q4: Why is SMMBTH10-4LT3G not recommended?

A: SMMBTH10-4LT3G operates at 800MHz, which is below the 4.5GHz transition frequency requirement. This part is unsuitable for RF applications requiring 4.5GHz performance.

Q5: What compliance certifications should be verified for production use?

A: All recommended active substitutes (BFR93AWH6327XTSA1, BFP740FESDH6327XTSA1, HFA3134IHZ96, SMMBTH10-4LT3G) are ROHS3 compliant. All parts carry REACH Unaffected status and EAR99 ECCN classification. Moisture sensitivity level is 1 (Unlimited) for all parts.

Q6: Are there inventory considerations for substitute selection?

A: BFR93AWH6327XTSA1 has the highest inventory availability (35,300 pcs), ensuring supply continuity. 2SC5347AE-TD-E (4,129 pcs) and BFP740FESDH6327XTSA1 (6,007 pcs) have moderate availability. SMMBTH10-4LT3G has limited inventory (994 pcs).