Equivalent & Substitute Parts for 2SB1219ASL

Part Overview

The 2SB1219ASL is a PNP bipolar junction transistor manufactured by Panasonic Electronic Components, rated for 50 V collector-emitter breakdown voltage and 500 mA maximum collector current. This surface mount device in SMini3-G1 packaging is designed for general-purpose switching and amplification applications. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across critical parameters including voltage rating, current capacity, and package form factor while accommodating modern component availability and compliance standards.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Voltage - Collector Emitter Breakdown (Max)	50	V
Current - Collector (Ic) (Max)	500	mA
Vce Saturation (Max) @ Ib, Ic	600mV @ 30mA, 300mA	V
DC Current Gain (hFE) (Min) @ Ic, Vce	170 @ 150mA, 10V	—
Power - Max	150	mW
Frequency - Transition	200	MHz
Operating Temperature (TJ)	150	°C
Mounting Type	Surface Mount	—
Package / Case	SC-70, SOT-323	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the 2SB1219ASL is determined by strict alignment of the following electrical and mechanical parameters:

Critical Matching Parameters:

Transistor polarity (PNP)
Collector-emitter breakdown voltage rating (minimum 50 V)
Maximum collector current (500 mA)
Surface mount package compatibility (SC-70 / SOT-323)
Vce saturation characteristics
DC current gain (hFE) specifications
Operating temperature range

Substitution Categories:

Direct Equivalent (Electrical & Mechanical Match): The 2PB1219AS,115 from Nexperia USA Inc. maintains identical electrical specifications for voltage, current, and saturation characteristics. This part operates at the same maximum collector current and voltage ratings with matching DC current gain parameters. The SOT-323 package provides mechanical compatibility with the original SMini3-G1 footprint. This part is active in production status with AEC-Q101 automotive qualification and ROHS3 compliance.

Similar Substitutes (Reduced Voltage Rating): The BC807-16W RFG, BC807-25W RFG, and BC807-40W RFG from Taiwan Semiconductor Corporation operate at 45 V collector-emitter breakdown voltage, which is 5 V below the original specification. These parts maintain 500 mA maximum collector current and SOT-323 package compatibility. Differentiation among BC807 variants is determined by DC current gain: BC807-16W RFG provides 100 hFE minimum, BC807-25W RFG provides 160 hFE minimum, and BC807-40W RFG provides 250 hFE minimum. All BC807 variants operate across the extended temperature range of -55°C to 150°C and carry ROHS3 compliance.

Parameter Comparison

Parameter	2SB1219ASL (Main)	2PB1219AS,115 (Direct)	BC807-16W RFG (Similar)	BC807-25W RFG (Similar)	BC807-40W RFG (Similar)
Manufacturer	Panasonic	Nexperia USA Inc.	Taiwan Semiconductor	Taiwan Semiconductor	Taiwan Semiconductor
Product Status	Obsolete	Active	Active	Active	Active
Transistor Type	PNP	PNP	PNP	PNP	PNP
Voltage - Collector Emitter Breakdown (Max)	50 V	50 V	45 V	45 V	45 V
Current - Collector (Ic) (Max)	500 mA	500 mA	500 mA	500 mA	500 mA
Vce Saturation (Max) @ Ib, Ic	600mV @ 30mA, 300mA	600mV @ 30mA, 300mA	700mV @ 50mA, 500mA	700mV @ 50mA, 500mA	700mV @ 50mA, 500mA
Current - Collector Cutoff (Max)	100nA (ICBO)	100nA (ICBO)	100nA (ICBO)	100nA (ICBO)	100nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce	170 @ 150mA, 10V	170 @ 150mA, 10V	100 @ 100mA, 1V	160 @ 100mA, 1V	250 @ 100mA, 1V
Power - Max	150 mW	200 mW	200 mW	200 mW	200 mW
Frequency - Transition	200 MHz	140 MHz	80 MHz	80 MHz	80 MHz
Operating Temperature (TJ)	150°C	150°C	-55°C ~ 150°C	-55°C ~ 150°C	-55°C ~ 150°C
Package / Case	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323	SC-70, SOT-323
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
RoHS Status	—	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Automotive Qualification	—	AEC-Q101	—	—	—

Engineering Selection Recommendations

For Direct Replacement (Preferred):

The 2PB1219AS,115 from Nexperia USA Inc. is the primary substitute for the obsolete 2SB1219ASL. This part maintains identical electrical specifications across all critical parameters: 50 V collector-emitter breakdown voltage, 500 mA maximum collector current, and matching DC current gain of 170 hFE minimum at specified test conditions. The 2PB1219AS,115 is active in production status with AEC-Q101 automotive qualification and ROHS3 compliance, ensuring long-term availability and regulatory alignment. The increased power dissipation rating (200 mW versus 150 mW) provides additional thermal margin. Tape & Reel packaging supports automated assembly processes.

For Voltage-Reduced Applications:

The BC807 series (BC807-16W RFG, BC807-25W RFG, BC807-40W RFG) from Taiwan Semiconductor Corporation operates at 45 V collector-emitter breakdown voltage, representing a 5 V reduction from the original specification. These parts are suitable for applications where the circuit design operates below 45 V or where the reduced voltage rating does not impact system performance. Selection among BC807 variants depends on required DC current gain: BC807-16W RFG for minimum gain applications, BC807-25W RFG for standard gain requirements, and BC807-40W RFG for high-gain applications. All BC807 variants provide extended operating temperature range (-55°C to 150°C), ROHS3 compliance, and active production status. Transition frequency is reduced to 80 MHz compared to the original 200 MHz specification.

Frequently Asked Questions (FAQ)

Q: Can the 2PB1219AS,115 directly replace the 2SB1219ASL without circuit modification?

A: Yes. The 2PB1219AS,115 maintains identical electrical specifications for voltage rating (50 V), collector current (500 mA), Vce saturation characteristics, and DC current gain (170 hFE minimum). The SOT-323 package is mechanically compatible with the original SMini3-G1 footprint. No circuit modifications are required for direct substitution.

Q: What is the primary difference between the 2PB1219AS,115 and the BC807 series?

A: The 2PB1219AS,115 maintains the original 50 V collector-emitter breakdown voltage rating, while the BC807 series operates at 45 V. The 2PB1219AS,115 is the direct electrical equivalent. The BC807 series represents a voltage-reduced alternative suitable only for applications operating below 45 V.

Q: Why do the BC807 variants have different part numbers (BC807-16W, BC807-25W, BC807-40W)?

A: The suffix designates the DC current gain (hFE) specification. BC807-16W RFG provides 100 hFE minimum, BC807-25W RFG provides 160 hFE minimum, and BC807-40W RFG provides 250 hFE minimum. Selection depends on the required gain for the specific circuit application.

Q: Are the BC807 variants suitable for high-frequency applications?

A: The BC807 series operates at 80 MHz transition frequency, compared to 200 MHz for the original 2SB1219ASL. Applications requiring frequencies above 80 MHz should use the 2PB1219AS,115 direct equivalent, which operates at 140 MHz.

Q: What compliance certifications apply to each substitute part?

A: The 2PB1219AS,115 carries AEC-Q101 automotive qualification and ROHS3 compliance. The BC807 series carries ROHS3 compliance. All parts have MSL rating of 1 (Unlimited) for moisture sensitivity.

Q: Is the increased power dissipation rating (200 mW) of the 2PB1219AS,115 a concern?

A: No. The increased power rating (200 mW versus 150 mW) provides additional thermal margin and does not negatively impact circuit performance. This represents an improvement over the original specification.

Q: Can the BC807 series be used in circuits designed for 50 V operation?

A: No. The BC807 series is rated for 45 V maximum collector-emitter breakdown voltage. Use in circuits designed for 50 V operation exceeds the component rating and is not permitted. The 2PB1219AS,115 must be used for 50 V applications.

Q: What is the inventory status of these substitute parts?

A: The 2PB1219AS,115 has 4,152 pieces in stock. The BC807-16W RFG has 6,744 pieces in stock. The BC807-25W RFG has 6,729 pieces in stock. The BC807-40W RFG has 6,778 pieces in stock. All parts are available as new original components.

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