2SC4808J0L Equivalent & Substitute Parts

Part Overview

The 2SC4808J0L is an RF transistor NPN manufactured by Panasonic Electronic Components, designed for RF applications operating at 6GHz with a maximum collector-emitter breakdown voltage of 10V and power dissipation of 125mW. The device is packaged in SC-89 (SSMini3-F1) surface mount configuration and is classified as obsolete. Due to its obsolete status, equivalent substitute parts from active manufacturers are necessary to maintain design continuity and ensure long-term component availability for new production and field replacements.

Substiute Parts

2SC4808J0L

Panasonic Electronic ComponentsIn Stock: 11412SC4808J0L Datasheet

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BF771E6327HTSA1

Infineon TechnologiesIn Stock: 2836BF771E6327HTSA1 Datasheet

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BFP420H6740XTSA1

Infineon TechnologiesIn Stock: 9235BFP420H6740XTSA1 Datasheet

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BFP520H6327XTSA1

Infineon TechnologiesIn Stock: 35293BFP520H6327XTSA1 Datasheet

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BFR193FH6327XTSA1

Infineon TechnologiesIn Stock: 3144BFR193FH6327XTSA1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 2SC4808J0L is determined by electrical and mechanical compatibility within the RF transistor NPN category. The primary substitution criteria are:

Electrical Compatibility Requirements:

• Transistor type must be NPN
• Collector-emitter breakdown voltage must equal or exceed 10V
• Frequency capability must support or exceed 6GHz operation
• Maximum collector current must support 80mA operation
• Power dissipation capability must accommodate 125mW or greater
• DC current gain (hFE) characteristics must support RF amplification requirements
• Noise figure performance must be suitable for RF applications

Mechanical Compatibility Requirements:

• Surface mount packaging configuration
• Moisture sensitivity level MSL 1 (Unlimited)
• Physical footprint compatibility with SSMini3-F1 or equivalent surface mount packages

The substitute parts listed below meet these criteria while offering enhanced performance characteristics, active product status, and compliance certifications. Substitutes are grouped by their ability to directly replace the 2SC4808J0L in RF circuit applications while maintaining or improving electrical performance margins.

Parameter Comparison

Engineering Selection Recommendations

BF771E6327HTSA1 (Infineon Technologies)

The BF771E6327HTSA1 provides direct electrical substitution for the 2SC4808J0L with enhanced performance margins. This device maintains 80mA maximum collector current and 12V breakdown voltage, exceeding the original 10V specification. Operating frequency capability of 8GHz surpasses the 6GHz requirement. Power dissipation of 580mW provides significant margin over the 125mW original specification. The device is active in production status with ROHS3 compliance and REACH unaffected certification. Package configuration is SOT-23-3 (PG-SOT23), requiring PCB layout modification from the original SSMini3-F1 footprint.

BFR193FH6327XTSA1 (Infineon Technologies)

The BFR193FH6327XTSA1 offers equivalent electrical performance to the BF771E6327HTSA1 with identical voltage, frequency, and current ratings. This device is packaged in SOT-723 (PG-TSFP-3), a smaller surface mount configuration than the original SSMini3-F1. Power dissipation of 580mW and 8GHz frequency capability provide performance margin. Active production status with ROHS3 compliance and REACH unaffected certification. PCB layout modification required due to different package footprint.

BFP520H6327XTSA1 (Infineon Technologies)

The BFP520H6327XTSA1 is suitable for applications requiring extended frequency performance. This device operates at 45GHz with superior noise figure of 0.95dB and gain of 22.5dB. However, the 3.5V maximum breakdown voltage and 40mA maximum collector current are reduced compared to the original specification. This substitute is appropriate only for applications where the lower voltage and current ratings are acceptable and where the extended frequency capability provides system benefit. Active production status with ROHS3 compliance and REACH unaffected certification. Package is SOT-343 (PG-SOT343-3D).

BFP420H6740XTSA1 (Infineon Technologies)

The BFP420H6740XTSA1 provides high-frequency capability at 25GHz with 21dB gain and 1.1dB noise figure. Maximum collector current is limited to 35mA and breakdown voltage to 5V, both reduced from the original 2SC4808J0L specifications. This substitute is applicable only in applications where reduced voltage and current ratings are compatible with circuit requirements and where 25GHz frequency performance is beneficial. Active production status with ROHS3 compliance and REACH unaffected certification. Package is SOT-343 (PG-SOT343-3D).

Frequently Asked Questions (FAQ)

Q: Can the BF771E6327HTSA1 directly replace the 2SC4808J0L without circuit modification?

A: The BF771E6327HTSA1 provides electrical substitution with compatible NPN type, collector current (80mA), and enhanced voltage/power ratings. However, the package footprint differs (SOT-23-3 versus SSMini3-F1), requiring PCB layout modification. Bias network and impedance matching may require adjustment due to different gain and noise figure characteristics.

Q: What is the primary advantage of using BFR193FH6327XTSA1 over BF771E6327HTSA1?

A: Both devices provide identical electrical performance (12V, 8GHz, 80mA, 580mW). The BFR193FH6327XTSA1 uses SOT-723 packaging, which is physically smaller than SOT-23-3, enabling more compact PCB layouts. Selection depends on available board space and layout constraints.

Q: Are BFP520H6327XTSA1 and BFP420H6740XTSA1 suitable for all 2SC4808J0L applications?

A: These devices are not universal substitutes. Both have reduced maximum collector current (40mA and 35mA respectively) and lower breakdown voltages (3.5V and 5V) compared to the original 10V specification. They are suitable only for applications where these reduced ratings are compatible with circuit requirements and where the extended frequency capability (45GHz and 25GHz) provides system benefit.

Q: What packaging considerations apply when substituting the 2SC4808J0L?

A: The original 2SC4808J0L uses SC-89 (SSMini3-F1) packaging. All substitute parts use different surface mount packages: BF771E6327HTSA1 uses SOT-23-3, BFR193FH6327XTSA1 uses SOT-723, and BFP520H6327XTSA1 and BFP420H6740XTSA1 use SOT-343. PCB footprint, trace routing, and component placement must be modified accordingly. Verify pad dimensions and spacing compatibility with your PCB design tools.

Q: Do all substitute parts meet the same compliance requirements as the original 2SC4808J0L?

A: All substitute parts are ROHS3 compliant and REACH unaffected. The original 2SC4808J0L does not specify these certifications. All devices maintain MSL 1 (Unlimited) moisture sensitivity level. Verify compliance requirements for your specific application and regulatory jurisdiction.

Q: What is the impact of different noise figure specifications on circuit performance?

A: The 2SC4808J0L specifies 1.3–2dB noise figure at 800MHz. Substitute parts specify noise figure at different frequencies (900MHz–1.8GHz for BF771E6327HTSA1 and BFR193FH6327XTSA1, 1.8GHz for BFP520H6327XTSA1 and BFP420H6740XTSA1). Lower noise figure values indicate better performance. Direct comparison requires evaluation at your specific operating frequency. Consult device datasheets for complete noise figure versus frequency characteristics.

Q: Can the 2SC4808J0L be used in new designs, or should substitutes be selected?

A: The 2SC4808J0L is classified as obsolete. For new designs, select from active substitute parts to ensure long-term component availability and manufacturing support. For legacy system maintenance, the 2SC4808J0L may be used if inventory is available, but transition planning to active substitutes is recommended.