BC848CW-TP Equivalent & Substitute Parts

Part Overview

The BC848CW-TP is an NPN bipolar junction transistor (BJT) manufactured by Micro Commercial Co, designed for small-signal interface applications. This surface mount device operates at 30 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and transition frequency of 100 MHz. The part is classified as Active product status and is suitable for general-purpose switching and amplification circuits in compact form factors.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter ranges. Alternative sources and packaging configurations may be required due to inventory availability, supply chain considerations, or design revision requirements.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Collector Current (Ic) Maximum	100	mA
Collector-Emitter Breakdown Voltage (Max)	30	V
Vce Saturation (Max) @ Ib, Ic	600 mV @ 5 mA, 100 mA	—
Collector Cutoff Current (ICBO) Maximum	15	nA
DC Current Gain (hFE) Minimum @ Ic, Vce	420 @ 2 mA, 5 V	—
Power Dissipation Maximum	150	mW
Transition Frequency	100	MHz
Operating Temperature Range	−65 to +150	°C
Package Type	SOT-323 (SC-70)	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution eligibility for the BC848CW-TP is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Transistor type must be NPN
Collector current rating must be 100 mA or greater
Collector-emitter breakdown voltage must be 30 V or greater
Vce saturation must not exceed 600 mV at specified bias conditions
Transition frequency must be 100 MHz or greater
Package and pinout must be SOT-323 (SC-70) surface mount

Acceptable Variations:

DC current gain (hFE) may vary within the specified gain class (A, B, or C grade)
Power dissipation may be equal to or greater than 150 mW
Collector cutoff current (ICBO) may be equal to or less than specified maximum
Operating temperature range may be equal to or wider than −65 to +150°C
Packaging format (Bulk or Tape & Reel) does not affect electrical substitution
Manufacturer source does not affect substitution eligibility

Non-Substitutable Variations:

Different package types or pinouts
Lower electrical ratings in any critical parameter
Different transistor polarity or type

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce(br) V	Vce Sat mV	hFE @ 2mA, 5V	Power mW	Freq MHz	Temp °C	Package	ICBO nA
BC848CW-TP	Micro Commercial Co	100	30	600	420	150	100	−65 to +150	SOT-323	15
BC848AW RFG	Taiwan Semiconductor	100	30	600	110	200	100	−55 to +150	SOT-323	100
BC848BW RFG	Taiwan Semiconductor	100	30	600	200	200	100	−55 to +150	SOT-323	100
BC848CW RFG	Taiwan Semiconductor	100	30	600	420	200	100	−55 to +150	SOT-323	100
BC848CWT1G	Fairchild Semiconductor	100	30	600	420	150	100	−55 to +150	SOT-323	15
BC849AW RFG	Taiwan Semiconductor	100	30	600	110	200	100	−55 to +150	SOT-323	100
BC849BW RFG	Taiwan Semiconductor	100	30	600	200	200	100	−55 to +150	SOT-323	100
BC849CW RFG	Taiwan Semiconductor	100	30	600	420	200	100	−55 to +150	SOT-323	100

Engineering Selection Recommendations

All listed substitute parts maintain electrical equivalence with the BC848CW-TP across the critical performance parameters. Selection between substitutes is based on the following factors:

Gain Class Matching: The BC848CW-TP operates in the C-grade gain class (hFE = 420 @ 2 mA, 5 V). Direct electrical equivalents maintaining this gain specification are BC848CW RFG, BC848CWT1G, BC849CW RFG, and BC849BW RFG. Parts with lower gain specifications (A-grade: hFE = 110, B-grade: hFE = 200) are electrically substitutable but operate at different gain characteristics.

Power Dissipation: The BC848CW-TP is rated at 150 mW. Substitute parts rated at 200 mW provide additional thermal margin and are directly substitutable. The BC848CWT1G maintains the 150 mW rating.

Temperature Range: The BC848CW-TP operates from −65°C to +150°C. All substitute parts operate from −55°C to +150°C, providing a narrower low-temperature range. Applications requiring operation below −55°C must use the BC848CW-TP or BC848CWT1G.

Leakage Current: The BC848CW-TP specifies ICBO maximum of 15 nA. Substitute parts with 100 nA ICBO are acceptable for most applications but exhibit higher leakage. Applications with stringent leakage requirements should use BC848CW-TP or BC848CWT1G.

Packaging and Compliance: BC848CW RFG, BC848BW RFG, BC848AW RFG, BC849CW RFG, BC849BW RFG, and BC849AW RFG are supplied in Tape & Reel format with RoHS3 compliance and MSL Level 1. BC848CWT1G is supplied in Bulk format. Packaging selection depends on assembly process requirements and moisture sensitivity protocols.

Base Product Designation: BC848 and BC849 series parts are electrically interchangeable within their respective gain grades. The BC849 series represents an alternative product line with identical electrical specifications.

Frequently Asked Questions (FAQ)

Q: Can BC848AW RFG replace BC848CW-TP in all applications?

A: BC848AW RFG is electrically substitutable for the BC848CW-TP in applications where the lower DC current gain (hFE = 110 versus 420) is acceptable. The A-grade part operates at lower gain, which affects amplification factor and biasing calculations. Applications requiring high current gain should use C-grade parts (BC848CW RFG, BC848CWT1G, BC849CW RFG).

Q: What is the difference between BC848 and BC849 series transistors?

A: BC848 and BC849 series transistors are electrically equivalent within their respective gain grades. Both are NPN small-signal transistors with identical electrical ratings. The series designation does not indicate functional differences; substitution between series is permitted when gain class matches.

Q: Is the BC848CWT1G suitable for high-temperature applications?

A: The BC848CWT1G operates from −55°C to +150°C. The BC848CW-TP extends the low-temperature range to −65°C. For applications requiring operation below −55°C, the BC848CW-TP is required. Both parts support the full +150°C upper temperature limit.

Q: Does packaging format (Bulk versus Tape & Reel) affect electrical performance?

A: Packaging format does not affect electrical performance or substitution eligibility. Bulk and Tape & Reel formats contain identical components. Selection is based on assembly process requirements, moisture sensitivity level (MSL) protocols, and supply chain logistics.

Q: Can I use a substitute part with higher power dissipation rating?

A: Yes. Parts rated at 200 mW are directly substitutable for the 150 mW BC848CW-TP. Higher power ratings provide additional thermal margin and do not degrade performance. The actual power dissipation in the circuit is determined by circuit design, not the component rating.

Q: What does ICBO (Collector Cutoff Current) variation mean for circuit design?

A: ICBO is the reverse leakage current between collector and base when the emitter is open. The BC848CW-TP specifies 15 nA maximum; substitute parts specify 100 nA maximum. Higher leakage affects precision analog circuits and low-power applications. For general-purpose switching applications, the difference is negligible.

Q: Are all substitute parts RoHS compliant?

A: BC848AW RFG, BC848BW RFG, BC848CW RFG, BC849AW RFG, BC849BW RFG, and BC849CW RFG are RoHS3 compliant. BC848CW-TP is REACH Unaffected. BC848CWT1G compliance status is not specified in the provided data. Verify compliance requirements for your specific application and regulatory jurisdiction.

Q: Can I substitute BC848CW-TP with BC848CW RFG in production?

A: Yes. BC848CW RFG is electrically equivalent to BC848CW-TP with identical gain specification (hFE = 420), collector current (100 mA), and voltage ratings (30 V). The primary difference is packaging format (Tape & Reel versus Bulk) and manufacturer source (Taiwan Semiconductor Corporation versus Micro Commercial Co). Verify supply chain continuity and assembly process compatibility before production transition.

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