BC818-16-TP Equivalent & Substitute Parts

Part Overview

The BC818-16-TP is an NPN bipolar junction transistor manufactured by Micro Commercial Co, designed for general-purpose interface applications. This surface mount device operates at a maximum collector current of 500 mA with a collector-emitter breakdown voltage of 25 V and a maximum power dissipation of 300 mW. The part is currently in active production status with 931 pieces available in bulk packaging.

Substitute parts are identified when equivalent electrical and mechanical parameters allow direct replacement in circuit applications while maintaining functional performance and physical compatibility.

Key Parameters

Parameter	BC818-16-TP
Transistor Type	NPN
Current - Collector (Ic) (Max)	500 mA
Voltage - Collector Emitter Breakdown (Max)	25 V
Power - Max	300 mW
Frequency - Transition	170 MHz
Operating Temperature Range	-55°C ~ 150°C (TJ)
Mounting Type	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the BC818-16-TP is determined by the following critical parameters:

Mandatory Matching Criteria:

Transistor Type: NPN
Current - Collector (Ic) (Max): 500 mA
Mounting Type: Surface Mount
Package / Case: TO-236-3, SC-59, SOT-23-3

Allowable Parameter Variations:

Voltage - Collector Emitter Breakdown (Max): Equal to or greater than 25 V
Power - Max: Equal to or greater than 300 mW
Frequency - Transition: Equal to or greater than 170 MHz
Operating Temperature Range: Equal to or exceeding -55°C ~ 150°C (TJ)

The substitute parts BC818-40LT1G and 2SD2114KT146V meet the mandatory matching criteria. Parameter variations are documented in the comparison table below.

Parameter Comparison

Parameter	BC818-16-TP	BC818-40LT1G	2SD2114KT146V
Manufacturer	Micro Commercial Co	onsemi	Rohm Semiconductor
Transistor Type	NPN	NPN	NPN
Current - Collector (Ic) (Max)	500 mA	500 mA	500 mA
Voltage - Collector Emitter Breakdown (Max)	25 V	25 V	20 V
Vce Saturation (Max) @ Ib, Ic	700mV @ 50mA, 500mA	700mV @ 50mA, 500mA	400mV @ 20mA, 500mA
Current - Collector Cutoff (Max)	100nA (ICBO)	100nA (ICBO)	500nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 100mA, 1V	250 @ 100mA, 1V	820 @ 10mA, 3V
Power - Max	300 mW	225 mW	200 mW
Frequency - Transition	170 MHz	100 MHz	350 MHz
Operating Temperature Range	-55°C ~ 150°C (TJ)	-55°C ~ 150°C (TJ)	150°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3	TO-236-3, SC-59, SOT-23-3
Product Status	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	Not specified
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

BC818-40LT1G (onsemi)

The BC818-40LT1G is an active production part with identical voltage and saturation characteristics to the BC818-16-TP. This part maintains the same collector-emitter breakdown voltage of 25 V and identical saturation voltage specifications. The BC818-40LT1G is ROHS3 compliant with unlimited moisture sensitivity level (MSL 1). The transition frequency of 100 MHz is lower than the BC818-16-TP, and maximum power dissipation is reduced to 225 mW. This part is suitable for applications where the lower frequency and power specifications are acceptable within circuit design margins.

2SD2114KT146V (Rohm Semiconductor)

The 2SD2114KT146V is an active production part with a collector-emitter breakdown voltage of 20 V, which is 5 V lower than the BC818-16-TP. This part exhibits superior transition frequency performance at 350 MHz and lower saturation voltage at 400 mV. The maximum power dissipation is 200 mW. The operating temperature range specification is limited to 150°C maximum junction temperature without a minimum temperature specification. This part is suitable for applications operating within the 20 V voltage envelope where higher frequency performance is required.

All three parts share identical collector current ratings of 500 mA and compatible surface mount packaging in the SOT-23-3 form factor. All parts maintain REACH Unaffected status.

Frequently Asked Questions (FAQ)

Q: Can BC818-40LT1G directly replace BC818-16-TP in all applications?

A: BC818-40LT1G shares identical voltage and saturation specifications with BC818-16-TP. However, the transition frequency is reduced from 170 MHz to 100 MHz, and maximum power dissipation is reduced from 300 mW to 225 mW. Substitution is valid only when circuit design margins accommodate these parameter reductions.

Q: What is the primary limitation of 2SD2114KT146V as a substitute?

A: The 2SD2114KT146V has a maximum collector-emitter breakdown voltage of 20 V compared to 25 V for BC818-16-TP. This part is suitable only for applications where the circuit voltage does not exceed 20 V. Additionally, the operating temperature range is specified only to a maximum of 150°C without a minimum temperature specification, whereas BC818-16-TP operates from -55°C to 150°C.

Q: Are all three parts physically compatible?

A: Yes. BC818-16-TP, BC818-40LT1G, and 2SD2114KT146V all use the TO-236-3 (SOT-23-3) surface mount package. Physical board layout compatibility is maintained across all three parts.

Q: Which substitute part offers the highest frequency performance?

A: The 2SD2114KT146V provides the highest transition frequency at 350 MHz, compared to 170 MHz for BC818-16-TP and 100 MHz for BC818-40LT1G.

Q: What compliance certifications apply to these parts?

A: All three parts maintain REACH Unaffected status. BC818-40LT1G is ROHS3 compliant with MSL 1 (Unlimited). RoHS and MSL status for BC818-16-TP and 2SD2114KT146V are not specified in the provided data.

Q: Are there differences in DC current gain between these parts?

A: Yes. DC current gain (hFE) specifications differ significantly: BC818-16-TP specifies 100 @ 100mA, 1V; BC818-40LT1G specifies 250 @ 100mA, 1V; and 2SD2114KT146V specifies 820 @ 10mA, 3V. These differences reflect different measurement conditions and device characteristics.

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