ABC817-40-HF Equivalent & Substitute Parts

Part Overview

The ABC817-40-HF is an NPN bipolar junction transistor (BJT) manufactured by Comchip Technology, designed for general-purpose switching and amplification applications. This surface mount device operates at 45 V collector-emitter breakdown voltage with a maximum collector current of 500 mA and is packaged in the SOT-23-3 form factor. The part maintains active product status and carries AEC-Q101 automotive qualification with ROHS3 compliance.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs across multiple qualified manufacturers.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Current - Collector (Ic) Max	500	mA
Voltage - Collector Emitter Breakdown (Max)	45	V
Vce Saturation (Max) @ Ib, Ic	700 mV @ 50 mA, 500 mA	—
Current - Collector Cutoff (Max)	100	nA
DC Current Gain (hFE) Min @ Ic, Vce	250 @ 100 mA, 1 V	—
Power - Max	300	mW
Frequency - Transition	100	MHz
Operating Temperature Range	-55 to 150	°C
Package / Case	SOT-23-3 (TO-236-3, SC-59)	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level	1 (Unlimited)	—
Grade	Automotive	—
Qualification	AEC-Q101	—

Substitute Part Grouping Explanation

Substitute parts for the ABC817-40-HF are qualified based on strict electrical and mechanical parameter equivalence. All substitute parts listed maintain identical specifications across the following critical parameters:

Electrical Equivalence Criteria:

Transistor Type: NPN
Maximum Collector Current (Ic): 500 mA
Collector-Emitter Breakdown Voltage: 45 V
Vce Saturation: 700 mV @ 50 mA, 500 mA
Collector Cutoff Current (ICBO): 100 nA
DC Current Gain (hFE): 250 minimum @ 100 mA, 1 V
Maximum Power Dissipation: 300 mW
Transition Frequency: 100 MHz

Mechanical Compatibility Criteria:

Package Type: SOT-23-3 (TO-236-3, SC-59)
Mounting: Surface Mount
Pin Configuration: Identical three-pin layout

Compliance Criteria:

RoHS3 Compliance
Moisture Sensitivity Level 1
Active Product Status

Substitute parts are sourced from multiple manufacturers including EVVO Semi, Taiwan Semiconductor Corporation, and onsemi. Automotive-grade variants with AEC-Q101 qualification are identified separately for applications requiring automotive-level reliability.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Ic (Max) mA	Vce(br) V	hFE (Min)	Power (Max) mW	Freq MHz	Temp Range °C	Package	Automotive Grade	Packaging Type
ABC817-40-HF	Comchip Technology	500	45	250	300	100	-55 to 150	SOT-23-3	Yes (AEC-Q101)	Tape & Reel
BC817-40	EVVO Semi	500	45	250	300	100	-55 to 150	SOT-23-3	No	Cut Tape & Digi-Reel
BC817-40 RFG	Taiwan Semiconductor Corporation	500	45	250	300	100	-55 to 150	SOT-23-3	No	Tape & Reel
BC817-40LT1G	onsemi	500	45	250	300	100	-65 to 150	SOT-23-3	No	Cut Tape & Digi-Reel
BC817-40LT3G	onsemi	500	45	250	300	100	-65 to 150	SOT-23-3	No	Cut Tape & Digi-Reel
SBC817-40LT1G	onsemi	500	45	250	300	100	-65 to 150	SOT-23-3	Yes (AEC-Q101)	Cut Tape & Digi-Reel
SBC817-40LT3G	onsemi	500	45	250	300	100	-65 to 150	SOT-23-3	Yes (AEC-Q101)	Tape & Reel

Engineering Selection Recommendations

For Automotive Applications with AEC-Q101 Requirement:

The SBC817-40LT1G and SBC817-40LT3G are direct functional equivalents to the ABC817-40-HF, both manufactured by onsemi with AEC-Q101 automotive qualification. These parts maintain identical electrical specifications and extended operating temperature range (-65°C to 150°C). Selection between LT1G and LT3G variants depends on packaging format availability: LT1G is supplied in Cut Tape & Digi-Reel format, while LT3G is supplied in Tape & Reel format.

For General-Purpose Applications Without Automotive Qualification Requirement:

The BC817-40 (EVVO Semi), BC817-40 RFG (Taiwan Semiconductor Corporation), BC817-40LT1G, and BC817-40LT3G (onsemi) provide electrical equivalence with identical core specifications. These non-automotive variants are suitable for consumer and industrial applications. The BC817-40 RFG maintains the same operating temperature range as the ABC817-40-HF (-55°C to 150°C), while onsemi variants extend to -65°C minimum.

Packaging Considerations:

The ABC817-40-HF is supplied in Tape & Reel format. Substitute parts are available in both Tape & Reel (BC817-40 RFG, SBC817-40LT3G) and Cut Tape & Digi-Reel formats (BC817-40, BC817-40LT1G, BC817-40LT3G, SBC817-40LT1G). Packaging format selection should align with assembly line requirements and minimum order quantities.

Compliance and Regulatory Status:

All substitute parts maintain ROHS3 compliance and Moisture Sensitivity Level 1 (unlimited shelf life). Automotive-grade variants carry REACH Unaffected status. Non-automotive variants from onsemi also carry REACH Unaffected designation.

Frequently Asked Questions (FAQ)

Q: Can BC817-40LT1G replace ABC817-40-HF in automotive applications?

A: BC817-40LT1G is not qualified for automotive applications. It lacks AEC-Q101 certification. For automotive designs, use SBC817-40LT1G or SBC817-40LT3G, which carry identical AEC-Q101 qualification to the ABC817-40-HF.

Q: What is the difference between BC817-40LT1G and BC817-40LT3G?

A: Both parts are electrically identical with identical specifications. The difference is in packaging format: LT1G is supplied in Cut Tape & Digi-Reel format, while LT3G is supplied in Cut Tape & Digi-Reel format. Both are manufactured by onsemi.

Q: Does the extended temperature range of BC817-40LT1G (-65°C to 150°C) provide additional capability over ABC817-40-HF (-55°C to 150°C)?

A: The extended lower temperature limit of -65°C provides operation capability at lower ambient temperatures. However, this extended range does not affect electrical performance within the ABC817-40-HF's specified operating range of -55°C to 150°C. Selection should be based on actual application temperature requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain ROHS3 compliance identical to the ABC817-40-HF.

Q: What is the significance of the "S" prefix in SBC817-40LT1G and SBC817-40LT3G?

A: The "S" prefix designates automotive-grade qualification. SBC817 variants carry AEC-Q101 certification, making them suitable for automotive applications. BC817 variants without the "S" prefix are general-purpose devices without automotive qualification.

Q: Can I use BC817-40 RFG as a direct replacement in terms of packaging?

A: BC817-40 RFG is supplied in Tape & Reel format, matching the ABC817-40-HF packaging type. It maintains identical electrical specifications and operating temperature range (-55°C to 150°C). However, it lacks automotive qualification, so it is suitable only for non-automotive applications.

Q: What is the difference between Cut Tape & Digi-Reel and standard Tape & Reel packaging?

A: Both are surface mount packaging formats. Tape & Reel is the standard continuous reel format for automated assembly. Cut Tape & Digi-Reel provides the same components in smaller quantities on cut tape segments, suitable for lower-volume production or prototyping. Electrical and mechanical specifications remain identical.

Q: Are there any electrical performance differences between the ABC817-40-HF and its substitutes?

A: No. All listed substitute parts maintain identical electrical specifications: 500 mA maximum collector current, 45 V collector-emitter breakdown voltage, 250 minimum DC current gain, 300 mW maximum power dissipation, and 100 MHz transition frequency. Vce saturation characteristics are also identical at 700 mV @ 50 mA, 500 mA.

Q: Which substitute part has the highest inventory availability?

A: BC817-40 manufactured by EVVO Semi has the highest inventory at 3,455,400 pieces. This part is suitable for high-volume production runs in non-automotive applications.

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