BC859CE6327HTSA1 Equivalent & Substitute Parts

Part Overview

The BC859CE6327HTSA1 is a PNP bipolar junction transistor manufactured by Infineon Technologies, designed for general-purpose switching and amplification applications. This device operates at 30 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and transition frequency of 250 MHz. The part is classified as Last Time Buy status, indicating limited availability from the original manufacturer. Equivalent and substitute parts are necessary to ensure design continuity, maintain supply chain flexibility, and support long-term production requirements.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Collector Current (Ic) Maximum	100	mA
Collector-Emitter Breakdown Voltage (Vceo)	30	V
Vce Saturation @ Ib, Ic	650 mV @ 5 mA, 100 mA	—
Collector Cutoff Current (Icbo)	15	nA
DC Current Gain (hFE) @ Ic, Vce	420 @ 2 mA, 5 V	—
Power Dissipation Maximum	330	mW
Transition Frequency (fT)	250	MHz
Operating Temperature Maximum	150	°C
Package Type	SOT-23-3 (TO-236-3, SC-59)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the BC859CE6327HTSA1 is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Transistor Type: PNP configuration
Collector Current (Ic Max): 100 mA minimum
Collector-Emitter Breakdown Voltage (Vceo): 30 V minimum
Vce Saturation: 650 mV maximum @ 5 mA, 100 mA
DC Current Gain (hFE): 420 minimum @ 2 mA, 5 V
Power Dissipation: 330 mW minimum
Transition Frequency: 250 MHz minimum
Package: SOT-23-3 (TO-236-3, SC-59) surface mount
RoHS3 Compliance required
Moisture Sensitivity Level: 1 (Unlimited)

Substitution Categories:

Category 1: Parametric Equivalents (Infineon Technologies) Parts BC858CE6327HTSA1 and BC858CE6433HTMA1 meet all electrical specifications with identical performance parameters. These differ only in packaging format (Tape & Reel vs. Cut Tape) and internal manufacturing codes, maintaining full functional equivalence.

Category 2: Direct Equivalents (Alternative Manufacturers) Parts BC858C-7-F (Diodes Incorporated), BC858CLT1G (onsemi), BC859C,215 (Nexperia USA Inc.), and NSVBC858CLT3G (onsemi) provide equivalent electrical performance within the SOT-23-3 package. Minor variations in transition frequency (100–200 MHz) and power dissipation (250–300 mW) remain within acceptable operating margins for standard switching applications.

Category 3: Higher Current Capability (Rohm Semiconductor) Parts 2SB1695KT146, 2SB1695TL, 2SB1706TL, and 2SB1708TL exceed the base specification with collector currents of 1.5 A to 3 A. These parts maintain 30 V Vceo and are suitable for applications requiring higher current handling while preserving voltage and frequency characteristics.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Ic (Max) mA	Vceo (V)	Vce Sat (mV)	hFE @ Ic, Vce	Power (mW)	fT (MHz)	Package	Status
BC859CE6327HTSA1	Infineon	100	30	650 @ 5mA, 100mA	420 @ 2mA, 5V	330	250	SOT-23-3	Last Time Buy
BC858CE6327HTSA1	Infineon	100	30	650 @ 5mA, 100mA	420 @ 2mA, 5V	330	250	SOT-23-3	Last Time Buy
BC858CE6433HTMA1	Infineon	100	30	650 @ 5mA, 100mA	420 @ 2mA, 5V	330	250	SOT-23-3	Last Time Buy
BC858C-7-F	Diodes Incorporated	100	30	650 @ 5mA, 100mA	420 @ 2mA, 5V	300	200	SOT-23-3	Active
BC858CLT1G	onsemi	100	30	650 @ 5mA, 100mA	420 @ 2mA, 5V	300	100	SOT-23-3	Active
BC859C,215	Nexperia USA Inc.	100	30	650 @ 5mA, 100mA	420 @ 2mA, 5V	250	100	SOT-23-3	Active
NSVBC858CLT1G	onsemi	100	30	650 @ 5mA, 100mA	420 @ 2mA, 5V	300	100	SOT-23-3	Active
2SB1695KT146	Rohm Semiconductor	1500	30	370 @ 50mA, 1A	270 @ 100mA, 2V	200	280	SOT-23-3	Active
2SB1695TL	Rohm Semiconductor	1500	30	370 @ 50mA, 1A	270 @ 100mA, 2V	500	280	SC-96	Active
2SB1706TL	Rohm Semiconductor	2000	30	370 @ 75mA, 1.5A	270 @ 200mA, 2V	500	280	SC-96	Active
2SB1708TL	Rohm Semiconductor	3000	30	250 @ 30mA, 1.5A	270 @ 200mA, 2V	500	200	SC-96	Active

Engineering Selection Recommendations

For Direct Replacement (100 mA Collector Current Applications):

BC858C-7-F (Diodes Incorporated) and BC858CLT1G (onsemi) are recommended as primary substitutes. Both parts maintain Active product status, ensuring long-term availability and supply chain stability. These devices are RoHS3 compliant with MSL 1 rating, matching the original specification. The transition frequency reduction from 250 MHz to 100–200 MHz is acceptable for general-purpose switching applications operating below 100 MHz.

BC859C,215 (Nexperia USA Inc.) provides an alternative with Active status and automotive-grade qualification (AEC-Q101), suitable for applications requiring enhanced reliability documentation.

For Higher Current Applications (1.5 A to 3 A):

The Rohm Semiconductor 2SB1695 and 2SB1706/2SB1708 series offer increased collector current capability while maintaining 30 V Vceo. These parts are Active status with RoHS3 compliance. The 2SB1695TL and 2SB1706TL employ SC-96 packaging, requiring PCB layout modifications from the original SOT-23-3 footprint.

Compliance Verification:

All recommended substitutes maintain RoHS3 compliance and MSL 1 rating. No additional qualification testing is required for parts within the same electrical specification band.

Frequently Asked Questions (FAQ)

Q1: Can BC858C-7-F replace BC859CE6327HTSA1 in all applications?

BC858C-7-F meets the core electrical specifications: 100 mA collector current, 30 V Vceo, 650 mV Vce saturation, and 420 hFE minimum. The transition frequency is 200 MHz versus 250 MHz in the original part. This substitution is valid for applications with signal frequencies below 100 MHz. For circuits operating near 250 MHz, frequency-dependent performance must be evaluated against actual circuit requirements.

Q2: What is the difference between BC858CE6327HTSA1 and BC858CE6433HTMA1?

Both parts are Infineon Technologies products with identical electrical specifications. The difference lies in packaging format: BC858CE6327HTSA1 is supplied in Cut Tape (CT), while BC858CE6433HTMA1 is supplied in Tape & Reel (TR). Both are Last Time Buy status. Selection depends on assembly equipment compatibility and volume requirements.

Q3: Are the Rohm Semiconductor 2SB1695/2SB1706/2SB1708 series suitable for 100 mA applications?

Yes. These parts are rated for 1.5 A to 3 A collector current, making them suitable for 100 mA operation. However, they employ different packaging (SC-96 vs. SOT-23-3), requiring PCB redesign. Use these parts only when higher current capability is required or when SOT-23-3 alternatives are unavailable.

Q4: Does BC859C,215 have any advantages over other substitutes?

BC859C,215 is manufactured by Nexperia USA Inc. with Active product status and AEC-Q101 automotive qualification. This part is suitable for automotive and industrial applications requiring enhanced reliability documentation. Electrical performance is equivalent to other 100 mA alternatives.

Q5: What packaging considerations apply to substitute selection?

The BC859CE6327HTSA1 uses SOT-23-3 (TO-236-3, SC-59) surface mount package. Direct substitutes BC858C-7-F, BC858CLT1G, BC859C,215, and NSVBC858CLT1G maintain this package, requiring no PCB modifications. The Rohm Semiconductor 2SB1695TL, 2SB1706TL, and 2SB1708TL use SC-96 packaging, necessitating footprint redesign.

Q6: Are all substitutes RoHS3 compliant?

All recommended substitutes are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, matching the original BC859CE6327HTSA1 specification.

Q7: Which substitute offers the best long-term availability?

BC858C-7-F (Diodes Incorporated), BC858CLT1G (onsemi), BC859C,215 (Nexperia USA Inc.), and the Rohm Semiconductor 2SB1695/2SB1706/2SB1708 series all maintain Active product status, ensuring continued manufacturing and supply chain support. The original BC859CE6327HTSA1 is Last Time Buy, making these alternatives essential for new designs and long-term production.

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