Equivalent & Substitute Parts Reference for 2SC5338-T1-AZ

Part Overview

The 2SC5338-T1-AZ, manufactured by CEL, is an NPN bipolar junction transistor (BJT) designed for RF applications up to 6GHz, with a maximum collector-emitter voltage of 12V and collector current of 150mA. The package is SOT-89 (TO-243AA), supporting surface mount assembly. This product is currently classified as Obsolete, requiring engineering users to identify substitute transistors with matching electrical and mechanical parameters for ongoing maintenance, redesign, and supply chain continuity in relevant designs.

Key Parameters

Parameter	2SC5338-T1-AZ
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	12V
Frequency - Transition	6GHz
Noise Figure (dB Typ @ f)	3.5dB @ 1GHz
Gain	10dB
Power - Max	1.8W
DC Current Gain (hFE) (Min) @ Ic, Vce	50 @ 50mA, 5V
Current - Collector (Ic) (Max)	150mA
Operating Temperature	150°C (TJ)
Mounting Type	Surface Mount
Package / Case	TO-243AA (SOT-89)
Supplier Device Package	SOT-89
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected
ECCN	EAR99
HTSUS	8541.29.0075

Substitute Part Grouping Explanation

Substitute parts for 2SC5338-T1-AZ are selected based on direct matching or close proximity of key operating and physical parameters, as listed. The substitute group comprises NPN RF transistors in the Transistors, Bipolar (BJT) category, surface-mount packages, and compliance statuses. Substitution is determined strictly by the following criteria: transistor type (NPN), collector-emitter breakdown voltage, maximum operating frequency, noise figure, gain, maximum collector current, power rating, package compatibility, and regulatory compliance including MSL and REACH.

Parameter Comparison

Parameter	2SC5338-T1-AZ (Main)	2SC5065-Y(TE85L,F)	BFP720FH6327XTSA1	BFR181WH6327XTSA1	BFR360L3E6765XTMA1	MMBT918LT1G
Transistor Type	NPN	NPN	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	12V	12V	4.7V	12V	9V	15V
Frequency - Transition	6GHz	7GHz	45GHz	8GHz	14GHz	600MHz
Noise Figure (dB Typ @ f)	3.5dB @ 1GHz	1.1dB @ 1GHz	0.4dB ~ 1dB @ 150MHz ~ 10GHz	0.9dB ~ 1.2dB @ 900MHz ~ 1.8GHz	1dB ~ 1.3dB @ 1.8GHz ~ 3GHz	6dB @ 60MHz
Gain	10dB	12dB ~ 17dB	10.5dB ~ 28dB	19dB	11.5dB ~ 16dB	11dB
Power - Max	1.8W	100mW	100mW	175mW	210mW	225mW
DC Current Gain (hFE) (Min) @ Ic, Vce	50 @ 50mA, 5V	120 @ 10mA, 5V	160 @ 13mA, 3V	70 @ 5mA, 8V	90 @ 15mA, 3V	20 @ 3mA, 1V
Current - Collector (Ic) (Max)	150mA	30mA	25mA	20mA	35mA	50mA
Operating Temperature	150°C (TJ)	125°C (TJ)	150°C (TJ)	150°C (TJ)	150°C (TJ)	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-243AA (SOT-89)	SC-70, SOT-323	4-SMD, Flat Leads	SC-70, SOT-323	SC-101, SOT-883	TO-236-3, SC-59, SOT-23-3
Supplier Device Package	SOT-89	SC-70	4-TSFP	PG-SOT323	PG-TSLP-3-1	SOT-23-3 (TO-236)
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

For replacement of the obsolete 2SC5338-T1-AZ, only parts with confirmed compliance (MSL 1, REACH Unaffected, EAR99 ECCN) should be selected to maintain regulatory compatibility. All substitute parts listed are classified as new, active, and in-stock with the required compliance statuses. Packaging and mounting type must match application requirements; where package or case differs, PCB layout revision may be required.

Frequently Asked Questions (FAQ)

Q1: What parameters are critical for substituting RF Bipolar Transistors like 2SC5338-T1-AZ?
A1: Substitution requires matching transistor type (NPN), collector-emitter breakdown voltage, frequency capability, gain, noise figure, maximum collector current, thermal limits, mounting type, and package designation. Regulatory compliance factors (MSL, REACH) must be confirmed.

Q2: Are all substitute transistors guaranteed to fit the same PCB layout?
A2: Only parts with SOT-89 or TO-243AA footprint match directly. Alternate packages (SC-70, SOT-323, SOT-23-3, 4-TSFP, SOT-883) require PCB redesign or adapter solutions.

Q3: Are substitute parts compliant with international environmental and safety regulations?
A3: All listed substitute transistors are marked as REACH Unaffected and MSL 1 (Unlimited). RoHS status and ECCN are also provided where applicable.

Q4: How does frequency and noise figure affect substitution?
A4: Substitute selection must consider that frequency and noise figure impact RF performance. Only transistors with comparable or better ratings ensure functional equivalence in RF amplifier or switching circuit applications.

Q5: Can pinout or electrical connections differ between substitute packages?
A5: Yes, the pin configuration for non-SOT-89 packages may differ. Refer to the manufacturer datasheet to confirm pin assignments for surface mount types such as SOT-323, SOT-23-3, 4-TSFP, SOT-883.

Q6: Why is product status important in substitute selection?
A6: Only active, non-obsolete items provide reliable supply chain continuity for new designs or repairs, as guaranteed in the provided substitute part data. Obsolete items should be avoided for ongoing production.

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