AC847BWQ-13 Equivalent & Substitute Parts

Part Overview

The AC847BWQ-13 is an NPN bipolar junction transistor manufactured by Diodes Incorporated, designed for general-purpose switching and amplification applications. This surface mount device is housed in the SOT-323 package and is qualified to AEC-Q101 automotive standards. The part is currently in active production status with robust inventory availability. Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific performance requirements where parametric compatibility is maintained.

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	600 mV @ 5 mA, 100 mA	—
Collector Cutoff Current (ICBO)	20	nA
DC Current Gain (hFE) @ Ic, Vce	200 @ 2 mA, 5 V	—
Power Dissipation Maximum	200	mW
Transition Frequency	300	MHz
Operating Temperature Range	−65 to +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 AC847BWQ-13 are classified into two categories based on parametric equivalence and manufacturer designation:

Parametric Equivalents (Direct Substitutes): Parts that maintain identical electrical specifications across all critical parameters including collector current, breakdown voltage, saturation voltage, DC current gain, power dissipation, transition frequency, and operating temperature range. These parts are interchangeable at the circuit level without design modification.

AC847BWQ-7 (Diodes Incorporated)
BC847BW-7-F (Diodes Incorporated)
BC847BWQ-13-F (Diodes Incorporated)

Manufacturer Recommended Alternatives: Parts that share the same package, mounting type, and core electrical ratings but exhibit variations in specific parameters such as transition frequency, collector cutoff current, DC current gain, or operating temperature range. These parts are suitable for applications where the specified parameter variations do not impact circuit performance.

BC847AW RFG (Taiwan Semiconductor Corporation)
BC847BW RFG (Taiwan Semiconductor Corporation)
BC847CW RFG (Taiwan Semiconductor Corporation)
BC850AW RFG (Taiwan Semiconductor Corporation)
BC850BW RFG (Taiwan Semiconductor Corporation)
BC850CW RFG (Taiwan Semiconductor Corporation)

Substitution eligibility is determined by matching the following critical parameters: transistor type (NPN), collector current rating (100 mA), collector-emitter breakdown voltage (45 V), saturation voltage (600 mV @ 5 mA, 100 mA), power dissipation (200 mW), package type (SOT-323), and mounting configuration (surface mount).

Parameter Comparison

Part Number	Manufacturer	Ic (Max) mA	Vce(br) V	Vce Sat mV	hFE @ 2mA, 5V	fT MHz	ICBO nA	Temp Range °C	AEC-Q101
AC847BWQ-13	Diodes Inc.	100	45	600	200	300	20	−65 to +150	Yes
AC847BWQ-7	Diodes Inc.	100	45	600	200	300	20	−65 to +150	Yes
BC847BW-7-F	Diodes Inc.	100	45	600	200	300	20	−65 to +150	No
BC847BWQ-13-F	Diodes Inc.	100	45	600	200	300	20	−65 to +150	Yes
BC847AW RFG	Taiwan Semi.	100	45	600	110	100	100	−55 to +150	No
BC847BW RFG	Taiwan Semi.	100	45	600	200	100	100	−55 to +150	No
BC847CW RFG	Taiwan Semi.	100	45	600	420	100	100	−55 to +150	No
BC850AW RFG	Taiwan Semi.	100	45	600	110	100	100	−55 to +150	No
BC850BW RFG	Taiwan Semi.	100	45	600	200	100	100	−55 to +150	No
BC850CW RFG	Taiwan Semi.	100	45	600	420	100	100	−55 to +150	No

Engineering Selection Recommendations

For Direct Substitution (Parametric Equivalents):

AC847BWQ-7, BC847BW-7-F, and BC847BWQ-13-F are parametrically identical to the AC847BWQ-13 across all electrical specifications. These parts are suitable for direct replacement in existing designs without circuit modification. AC847BWQ-7 and BC847BWQ-13-F maintain AEC-Q101 qualification, supporting automotive applications. BC847BW-7-F does not carry AEC-Q101 qualification and is suitable for non-automotive applications where automotive qualification is not required.

For Manufacturer Recommended Alternatives:

BC847AW RFG, BC847BW RFG, BC847CW RFG, BC850AW RFG, BC850BW RFG, and BC850CW RFG are suitable alternatives where the following parameter variations are acceptable to the application:

Transition frequency is reduced from 300 MHz to 100 MHz. This reduction is acceptable for low-frequency switching and amplification circuits but may limit performance in high-frequency applications.

Collector cutoff current (ICBO) increases from 20 nA to 100 nA. This increase has minimal impact on circuit performance in most applications but may affect precision analog circuits requiring extremely low leakage current.

DC current gain (hFE) varies by part designation: BC847AW and BC850AW provide hFE of 110, BC847BW and BC850BW provide hFE of 200, and BC847CW and BC850CW provide hFE of 420. Selection depends on circuit bias requirements.

Operating temperature range is reduced from −65°C to +150°C to −55°C to +150°C. This reduction is acceptable for applications not requiring extended low-temperature operation below −55°C.

None of the Taiwan Semiconductor Corporation alternatives carry AEC-Q101 qualification. These parts are not suitable for automotive applications requiring automotive qualification.

Frequently Asked Questions (FAQ)

Q: Can AC847BWQ-7 be used as a direct replacement for AC847BWQ-13?

A: Yes. AC847BWQ-7 is a parametric equivalent with identical electrical specifications and maintains AEC-Q101 automotive qualification. The part is suitable for direct substitution without circuit modification.

Q: What is the difference between BC847BW-7-F and BC847BWQ-13-F?

A: Both parts are parametrically equivalent to the AC847BWQ-13. BC847BWQ-13-F maintains AEC-Q101 automotive qualification, while BC847BW-7-F does not. Selection depends on whether automotive qualification is required for the application.

Q: Can BC847AW RFG be used in place of AC847BWQ-13 in an automotive application?

A: BC847AW RFG is not suitable for automotive applications requiring AEC-Q101 qualification. Additionally, BC847AW RFG exhibits reduced transition frequency (100 MHz versus 300 MHz) and lower DC current gain (110 versus 200), which may impact circuit performance in high-frequency switching applications.

Q: What are the key differences between the BC847 and BC850 series?

A: BC847 and BC850 parts share identical electrical ratings for collector current, breakdown voltage, saturation voltage, and power dissipation. The primary distinction is the base product number designation. Both series are available in equivalent gain grades (A, B, C variants) with corresponding hFE specifications.

Q: Is the SOT-323 package compatible across all substitute parts?

A: Yes. All substitute parts listed are housed in the SOT-323 (SC-70) package with surface mount configuration. Package dimensions and pin assignments are identical, supporting direct PCB layout compatibility.

Q: What is the impact of reduced transition frequency in Taiwan Semiconductor alternatives?

A: Transition frequency reduction from 300 MHz to 100 MHz affects high-frequency performance. For applications operating below 100 MHz, the reduction has no practical impact. For circuits requiring operation above 100 MHz, the AC847BWQ-13 or its parametric equivalents (AC847BWQ-7, BC847BW-7-F, BC847BWQ-13-F) are required.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All parts listed, including the main part AC847BWQ-13 and all substitutes, are ROHS3 compliant and REACH unaffected.

Q: Can BC850CW RFG be used where BC847CW RFG is specified?

A: Yes. BC850CW RFG and BC847CW RFG are functionally equivalent, both providing hFE of 420 at 2 mA, 5 V. Both parts share identical electrical specifications and package configuration. Selection between BC847 and BC850 series does not impact circuit performance.

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