BC847W,135 Equivalent & Substitute Parts

Part Overview

The BC847W,135 is an NPN bipolar junction transistor manufactured by Nexperia USA Inc., designed for small-signal switching and amplification applications. This surface-mount device operates at 45 V collector-emitter breakdown voltage with a maximum collector current of 100 mA and transition frequency of 100 MHz. The part is supplied in Tape & Reel packaging with SOT-323 package configuration and maintains Active product status. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific requirements where parametric or packaging variations are acceptable.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Collector Current (Ic) Maximum	100	mA
Collector-Emitter Breakdown Voltage (Max)	45	V
Vce Saturation @ Ib, Ic	400 mV @ 5 mA, 100 mA	—
Collector Cutoff Current (ICBO)	15	nA
DC Current Gain (hFE) Minimum @ Ic, Vce	110 @ 2 mA, 5 V	—
Power Dissipation Maximum	200	mW
Transition Frequency	100	MHz
Operating Temperature (Junction)	150	°C
Package Type	SOT-323 (SC-70)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the BC847W,135 are classified into three categories based on parametric alignment and application compatibility:

Parametric Equivalents maintain identical or functionally equivalent electrical specifications across all critical parameters: collector current (100 mA), collector-emitter breakdown voltage (45 V), transition frequency (100 MHz), DC current gain (110 minimum), and package type (SOT-323). These parts differ only in manufacturer, packaging format (Bulk vs. Tape & Reel), or minor variations in saturation voltage and cutoff current within acceptable tolerances. Parametric equivalents include BC847AW,115, BC847AW,135, and BC847W,115.

Direct Manufacturer Alternatives are produced by different manufacturers (onsemi) and maintain the same base part number designation (BC847) with identical electrical performance. These parts operate within the same voltage and current ratings but may exhibit variations in saturation voltage (600 mV vs. 400 mV), power dissipation (150 mW vs. 200 mW), or operating temperature range. Direct alternatives include BC847AWT1G and SBC847AWT1G, with the latter offering automotive-grade qualification (AEC-Q101).

Similar Functional Substitutes share the same NPN transistor type, voltage rating (45 V), and current rating (100 mA) but introduce variations in one or more secondary parameters such as transition frequency (300 MHz for BC847AW-7-F), saturation voltage (500–600 mV), DC current gain (200 for BC847B-TP and BC847BTT1G), package configuration (SOT-23 or SOT-416), or operating temperature range. These parts are suitable for applications where the specified parameter variation does not impact circuit performance.

Key Parameters Determining Substitution:

Collector-Emitter Breakdown Voltage: 45 V (fixed requirement)
Maximum Collector Current: 100 mA (fixed requirement)
Transistor Type: NPN (fixed requirement)
DC Current Gain (hFE): 110 minimum or higher (acceptable)
Package Type: SOT-323 preferred; SOT-23 and SOT-416 acceptable with PCB layout adjustment
Saturation Voltage: 400–600 mV range (acceptable)
Transition Frequency: 100 MHz minimum (acceptable; higher frequencies acceptable)

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce(br) V	Vce Sat @ 5mA, 100mA mV	hFE Min @ 2mA, 5V	Power mW	Freq MHz	Package	Classification
BC847W,135	Nexperia USA Inc.	100	45	400	110	200	100	SOT-323	Main Part
BC847AW,115	NXP Semiconductors	100	45	400	110	200	100	SOT-323	Parametric Equivalent
BC847AW,135	Nexperia USA Inc.	100	45	400	110	200	100	SOT-323	Parametric Equivalent
BC847W,115	Nexperia USA Inc.	100	45	400	110	200	100	SOT-323	Parametric Equivalent
BC847AWT1G	onsemi	100	45	600	110	150	100	SOT-323	Direct Alternative
SBC847AWT1G	onsemi	100	45	600	110	150	100	SOT-323	Direct Alternative
BC847AW RFG	Taiwan Semiconductor Corporation	100	45	600	110	200	100	SOT-323	Similar Substitute
BC847AW-7-F	Diodes Incorporated	100	45	600	110	200	300	SOT-323	Similar Substitute
BC847B-TP	Micro Commercial Co	100	45	500	200	225	100	SOT-23	Similar Substitute
BC847BTT1G	onsemi	100	45	600	200	225	100	SOT-416	Similar Substitute
BC847BW RFG	Taiwan Semiconductor Corporation	100	45	600	200	200	100	SOT-323	Similar Substitute

Engineering Selection Recommendations

Parametric Equivalents (BC847AW,115, BC847AW,135, BC847W,115) are the primary substitution choice when direct replacement is required. These parts maintain identical electrical specifications and package configuration. BC847AW,115 is supplied by NXP Semiconductors in Bulk packaging, suitable for high-volume applications. BC847AW,135 and BC847W,115 are supplied by Nexperia USA Inc. in Tape & Reel format, maintaining consistency with the main part's supply chain. All three maintain ROHS3 compliance and MSL Level 1 rating.

Direct Alternatives (BC847AWT1G, SBC847AWT1G) produced by onsemi are suitable when manufacturer diversification is required. Both parts maintain the 45 V / 100 mA / 100 MHz specification. SBC847AWT1G includes AEC-Q101 automotive qualification, appropriate for automotive and industrial applications requiring enhanced reliability screening. The 600 mV saturation voltage (versus 400 mV for the main part) is acceptable in most switching applications where saturation margin is not critical. The reduced power rating (150 mW versus 200 mW) requires verification that circuit power dissipation does not exceed this limit.

Similar Functional Substitutes are selected based on application-specific requirements:

BC847AW-7-F (Diodes Incorporated) offers 300 MHz transition frequency, suitable for higher-frequency switching applications where the main part's 100 MHz specification is insufficient. The 600 mV saturation voltage and extended operating temperature range (-65°C to 150°C) provide additional design margin.

BC847B-TP (Micro Commercial Co) and BC847BTT1G (onsemi) feature DC current gain of 200 (versus 110 for the main part), providing higher amplification in linear amplifier circuits. BC847B-TP uses SOT-23 package; BC847BTT1G uses SOT-416 package. Both require PCB layout modification to accommodate different pin spacing and footprint geometry.

BC847AW RFG and BC847BW RFG (Taiwan Semiconductor Corporation) provide alternative sourcing from established manufacturers. BC847AW RFG maintains hFE of 110; BC847BW RFG provides hFE of 200. Both are available in high inventory quantities and maintain SOT-323 package compatibility.

All substitute parts maintain ROHS3 compliance, MSL Level 1 rating, and EAR99 export classification consistent with the main part.

Frequently Asked Questions (FAQ)

Q: Can BC847AW,135 be used as a direct replacement for BC847W,135?

A: Yes. BC847AW,135 is a parametric equivalent with identical electrical specifications (100 mA, 45 V, 100 MHz, hFE 110 minimum, 200 mW, 400 mV saturation voltage) and SOT-323 package configuration. Both are manufactured by Nexperia USA Inc. and supplied in Tape & Reel format. The only difference is the part number suffix, which indicates internal manufacturing or qualification variations that do not affect circuit performance.

Q: What is the difference between BC847AW,115 and BC847W,115?

A: BC847AW,115 is supplied by NXP Semiconductors in Bulk packaging, while BC847W,115 is supplied by Nexperia USA Inc. in Tape & Reel format. Electrically, both parts are identical (100 mA, 45 V, 100 MHz, hFE 110, 400 mV saturation). The packaging format difference affects supply chain logistics and component handling but not circuit performance.

Q: Can I substitute BC847AWT1G for BC847W,135 in a switching application?

A: BC847AWT1G is suitable for most switching applications. It maintains the same 45 V / 100 mA / 100 MHz specification and hFE of 110. The saturation voltage increases from 400 mV to 600 mV, which is acceptable in switching circuits where saturation margin is not critical. However, power dissipation is reduced from 200 mW to 150 mW; verify that circuit power dissipation does not exceed this limit. The SOT-323 package is identical, requiring no PCB layout changes.

Q: Why would I choose BC847B-TP or BC847BTT1G over the main part?

A: These parts feature DC current gain (hFE) of 200 versus 110 for the main part, providing higher amplification in linear amplifier or buffer circuits. BC847B-TP uses SOT-23 package; BC847BTT1G uses SOT-416 package. Both require PCB footprint modification. Select these parts only if higher current gain is required for circuit performance.

Q: Is SBC847AWT1G suitable for automotive applications?

A: Yes. SBC847AWT1G is AEC-Q101 qualified and rated for automotive-grade reliability. It maintains the same 45 V / 100 mA / 100 MHz specification as the main part. The automotive qualification provides enhanced screening and reliability assurance for automotive and industrial applications. The 600 mV saturation voltage and 150 mW power rating are acceptable for most automotive switching circuits.

Q: Can I use BC847AW-7-F in place of BC847W,135 for high-frequency applications?

A: BC847AW-7-F is suitable for high-frequency applications requiring transition frequency above 100 MHz. This part offers 300 MHz transition frequency, providing improved performance in switching circuits operating at higher frequencies. The 45 V / 100 mA specification and hFE of 110 are maintained. The saturation voltage increases to 600 mV, which is acceptable in most switching applications. The SOT-323 package is identical, requiring no PCB layout changes.

Q: What is the significance of the MSL Level 1 rating?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life and no moisture bake-out requirement before soldering. All listed parts maintain MSL Level 1, ensuring consistent handling and storage procedures across all substitutes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed maintain ROHS3 compliance, consistent with the main part BC847W,135. This ensures compatibility with environmental regulations and customer requirements for lead-free and restricted substance compliance.

Q: What packaging formats are available for BC847 transistors?

A: The main part and most parametric equivalents use SOT-323 (SC-70) package in Tape & Reel or Bulk format. Similar substitutes include SOT-23 (BC847B-TP) and SOT-416 (BC847BTT1G) packages. SOT-23 and SOT-416 packages require different PCB footprints and pin spacing; verify PCB layout compatibility before selection.

Q: Can I mix different manufacturers' BC847 parts in the same circuit board?

A: Yes. All listed parts maintain identical or functionally equivalent electrical specifications within acceptable tolerances. Mixing manufacturers (Nexperia, NXP, onsemi, Diodes, Taiwan Semiconductor, Micro Commercial) is acceptable from an electrical standpoint. However, verify that saturation voltage, power dissipation, and current gain variations do not impact circuit performance in critical applications.

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