FSBCW30 PNP Bipolar Junction Transistor Equivalent & Substitute Parts

Part Overview

The FSBCW30 is a PNP bipolar junction transistor manufactured by onsemi, housed in a SOT-23-3 surface mount package. This device is rated for 32 V collector-emitter breakdown voltage with a maximum collector current of 500 mA and 500 mW power dissipation. The FSBCW30 is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, production continuity, and system maintenance. Active alternatives with compatible electrical and mechanical characteristics are available from multiple manufacturers.

Key Parameters

Parameter	FSBCW30 Specification
Transistor Type	PNP
Voltage - Collector Emitter Breakdown (Max)	32 V
Current - Collector (Ic) (Max)	500 mA
Power - Max	500 mW
Vce Saturation (Max) @ Ib, Ic	300 mV @ 500 µA, 10 mA
DC Current Gain (hFE) (Min) @ Ic, Vce	215 @ 2 mA, 5 V
Current - Collector Cutoff (Max)	100 nA (ICBO)
Operating Temperature Range	-55°C to 150°C (TJ)
Package / Case	SOT-23-3 (TO-236-3, SC-59)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the FSBCW30 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Matching Parameters:

Transistor polarity: PNP type required
Package compatibility: SOT-23-3 surface mount package
Voltage rating: Collector-emitter breakdown voltage must equal or exceed 32 V
Current capability: Collector current rating must equal or exceed 500 mA
Power dissipation: Maximum power rating must equal or exceed 500 mW
Saturation characteristics: Vce(sat) performance at specified bias conditions
DC current gain: hFE minimum specification at rated conditions
Temperature range: Operating temperature must encompass -55°C to 150°C

Substitute parts are categorized into two groups:

Group 1 - Direct Functional Equivalents (500 mA Current Rating): Parts maintaining the full 500 mA collector current specification with voltage ratings of 30 V or higher and equivalent or superior power dissipation.

Group 2 - Reduced Current Alternatives (100 mA Current Rating): Parts with lower collector current ratings (100 mA) suitable for applications not requiring the full 500 mA capability, maintaining 30 V or higher voltage ratings and compatible saturation characteristics.

Parameter Comparison

Part Number	Manufacturer	Transistor Type	Ic (Max) mA	Vce Breakdown (Max) V	Power (Max) mW	Vce(sat) @ Ib, Ic	hFE (Min) @ Ic, Vce	Package	Product Status
FSBCW30	onsemi	PNP	500	32	500	300 mV @ 500 µA, 10 mA	215 @ 2 mA, 5 V	SOT-23-3	Obsolete
MMBT4403LT1G	onsemi	PNP	600	40	300	750 mV @ 50 mA, 500 mA	100 @ 150 mA, 2 V	SOT-23-3	Active
BCW30LT1G	onsemi	PNP	100	32	300	300 mV @ 500 µA, 10 mA	215 @ 2 mA, 5 V	SOT-23-3	Active
NSVBC858CLT1G	onsemi	PNP	100	30	300	650 mV @ 5 mA, 100 mA	420 @ 2 mA, 5 V	SOT-23-3	Active
SBCW30LT1G	onsemi	PNP	100	32	300	300 mV @ 500 µA, 10 mA	215 @ 2 mA, 5 V	SOT-23-3	Active
2SA1182-Y,LF	Toshiba Semiconductor and Storage	PNP	500	30	150	250 mV @ 10 mA, 100 mA	120 @ 100 mA, 1 V	S-Mini	Active
BC858B-7-F	Diodes Incorporated	PNP	100	30	300	650 mV @ 5 mA, 100 mA	220 @ 2 mA, 5 V	SOT-23-3	Active
BCW30,215	Nexperia USA Inc.	PNP	100	32	250	150 mV @ 2.5 mA, 50 mA	215 @ 2 mA, 5 V	SOT-23-3	Active
BCW30,235	Nexperia USA Inc.	PNP	100	32	250	150 mV @ 2.5 mA, 50 mA	215 @ 2 mA, 5 V	SOT-23-3	Active
BCW61CE6327HTSA1	Infineon Technologies	PNP	100	32	330	550 mV @ 1.25 mA, 50 mA	250 @ 2 mA, 5 V	SOT-23-3	Obsolete
FMMT549TA	Diodes Incorporated	PNP	1000	30	500	750 mV @ 200 mA, 2 A	100 @ 500 mA, 2 V	SOT-23-3	Active

Engineering Selection Recommendations

For Direct Replacement (500 mA Applications):

FMMT549TA (Diodes Incorporated) is the primary active substitute for applications requiring the full 500 mA collector current specification. This device maintains SOT-23-3 package compatibility, exceeds the 32 V voltage requirement with a 30 V rating, and provides 500 mW power dissipation matching the original specification. Product status is active with RoHS3 compliance and REACH unaffected designation.

2SA1182-Y,LF (Toshiba Semiconductor and Storage) provides an alternative 500 mA solution with active product status. This device operates at 30 V breakdown voltage and 150 mW power dissipation. Package configuration is S-Mini rather than SOT-23-3, requiring PCB layout modification. RoHS3 compliance and REACH unaffected status are confirmed.

For Reduced Current Applications (100 mA or Less):

BCW30LT1G (onsemi) is an active equivalent with identical voltage rating (32 V), matching saturation characteristics (300 mV @ 500 µA, 10 mA), and equivalent DC current gain (215 @ 2 mA, 5 V). Current rating is reduced to 100 mA with 300 mW power dissipation. SOT-23-3 package compatibility is maintained. Product status is active with RoHS3 compliance.

SBCW30LT1G (onsemi) provides automotive-grade qualification (AEC-Q101) with identical electrical specifications to BCW30LT1G. This device is suitable for automotive applications requiring 100 mA maximum collector current. Product status is active with RoHS3 compliance.

BCW30,215 and BCW30,235 (Nexperia USA Inc.) are automotive-qualified alternatives (AEC-Q101) with 32 V voltage rating and 100 mA current capability. Both devices feature improved saturation characteristics (150 mV @ 2.5 mA, 50 mA) and 100 MHz transition frequency. Product status is active with RoHS3 compliance.

For General-Purpose Low-Current Substitution:

BC858B-7-F (Diodes Incorporated) and NSVBC858CLT1G (onsemi) are 100 mA rated alternatives with 30 V voltage ratings and 300 mW power dissipation. Both devices are active products with RoHS3 compliance and extended temperature ranges (-65°C to 150°C for BC858B-7-F). These parts are suitable for applications not requiring the full 500 mA specification.

Compliance and Certification Status:

All recommended active substitutes maintain RoHS3 compliance and REACH unaffected status. Automotive applications should prioritize SBCW30LT1G, BCW30,215, or BCW30,235 due to AEC-Q101 qualification. Devices with obsolete product status (BCW61CE6327HTSA1) should not be selected for new designs despite electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can MMBT4403LT1G replace FSBCW30 in all applications?

A: MMBT4403LT1G is electrically compatible for applications requiring up to 600 mA collector current at 40 V breakdown voltage. However, power dissipation is reduced to 300 mW compared to the FSBCW30 specification of 500 mW. Saturation voltage is higher (750 mV @ 50 mA, 500 mA) than the original (300 mV @ 500 µA, 10 mA). DC current gain is lower (100 @ 150 mA, 2 V versus 215 @ 2 mA, 5 V). Applications operating at maximum power or requiring low saturation voltage should be re-evaluated.

Q: Why is 2SA1182-Y,LF listed as a substitute if the package is different?

A: 2SA1182-Y,LF maintains the critical electrical specifications for 500 mA applications: 500 mA collector current, 30 V breakdown voltage, and 500 mW power dissipation. The S-Mini package differs from SOT-23-3, requiring PCB layout modification. This device is included as a functional alternative for designs where package footprint can be accommodated. Pin configuration must be verified before implementation.

Q: Which substitute is best for automotive applications?

A: SBCW30LT1G is the recommended choice for automotive applications. This device carries AEC-Q101 qualification, maintains identical electrical specifications to the FSBCW30 (32 V, 100 mA, 300 mW), and is housed in SOT-23-3 package. BCW30,215 and BCW30,235 (Nexperia) are alternative automotive-qualified options with improved saturation characteristics and 100 MHz transition frequency.

Q: Can I use a 100 mA rated device in place of the 500 mA FSBCW30?

A: Substitution with 100 mA devices is only valid if the application circuit does not require collector currents exceeding 100 mA. BCW30LT1G, SBCW30LT1G, BCW30,215, and BCW30,235 are electrically compatible at reduced current levels. Circuit analysis must confirm that maximum collector current remains below 100 mA under all operating conditions, including transient events and temperature extremes.

Q: What is the difference between BCW30,215 and BCW30,235?

A: BCW30,215 and BCW30,235 are both manufactured by Nexperia USA Inc. with identical electrical specifications: 32 V breakdown voltage, 100 mA collector current, 250 mW power dissipation, and 215 hFE minimum. Both devices carry AEC-Q101 automotive qualification. The part number suffix differentiates manufacturing batches or internal revisions. Electrical performance and package compatibility are equivalent.

Q: Is FMMT549TA suitable for high-frequency applications?

A: FMMT549TA operates at 100 MHz transition frequency, which is lower than some alternatives. The FSBCW30 does not specify transition frequency. For applications requiring frequencies above 100 MHz, devices such as BC858B-7-F (200 MHz) or NSVBC858CLT1G (100 MHz) should be evaluated. However, FMMT549TA maintains the 500 mA current capability and 500 mW power dissipation of the original device.

Q: What is the operating temperature range for each substitute?

A: Most substitutes operate across -55°C to 150°C, matching the FSBCW30 specification. BC858B-7-F extends the lower limit to -65°C. BCW30,215 and BCW30,235 specify only 150°C maximum without a lower temperature limit in the provided data. 2SA1182-Y,LF specifies 125°C maximum operating temperature, which is below the FSBCW30 range. Temperature range must be verified for applications requiring operation below -55°C or above 125°C.

Q: Are all substitutes RoHS3 compliant?

A: All active substitute parts listed are RoHS3 compliant. BCW61CE6327HTSA1 (Infineon, obsolete) is also RoHS3 compliant but should not be selected for new designs due to obsolete status. REACH unaffected status is confirmed for all listed devices.

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