BCR3AS-12A#B00 Equivalent & Substitute Parts

Part Overview

The BCR3AS-12A#B00 is a standard TRIAC rated for 600V off-state voltage and 3A on-state current, manufactured by Renesas Electronics Corporation in a Surface Mount TO-252-3 (DPAK) package. This component is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design requirements and production needs. The part operates across an industrial temperature range of -40°C to 125°C and is RoHS3 compliant.

Key Parameters

Parameter	BCR3AS-12A#B00
Triac Type	Standard
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	3 A
Voltage - Gate Trigger (Vgt) (Max)	1.5 V
Current - Gate Trigger (Igt) (Max)	15 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	30A @ 60Hz
Operating Temperature	-40°C ~ 125°C (TJ)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the BCR3AS-12A#B00 is determined by the following critical parameters:

Voltage Rating (Off State): Must be 600V or higher to maintain equivalent blocking capability
Current Rating (On State): Must be equal to or greater than 3A RMS to handle the same load conditions
Package Type: Must be TO-252-3 (DPAK) for mechanical and thermal compatibility
Operating Temperature Range: Must support -40°C to 125°C minimum
Gate Trigger Characteristics: Vgt and Igt parameters determine gate drive circuit compatibility

The Q6004D3RP from Littelfuse Inc. qualifies as a substitute based on matching voltage rating (600V), exceeding current rating (4A vs. 3A), identical package type (TO-252-3), and compatible operating temperature range (-40°C to 125°C).

Parameter Comparison

Parameter	BCR3AS-12A#B00 (Renesas)	Q6004D3RP (Littelfuse)	Compatibility
Triac Type	Standard	Logic - Sensitive Gate	Different gate characteristics; Q6004D3RP has lower Vgt (1.3V vs. 1.5V) and Igt (10mA vs. 15mA)
Voltage - Off State	600 V	600 V	Equivalent
Current - On State (It (RMS)) (Max)	3 A	4 A	Q6004D3RP exceeds requirement
Voltage - Gate Trigger (Vgt) (Max)	1.5 V	1.3 V	Q6004D3RP has lower trigger voltage
Current - Gate Trigger (Igt) (Max)	15 mA	10 mA	Q6004D3RP has lower trigger current
Current - Non Rep. Surge 50, 60Hz (Itsm)	30A @ 60Hz	46A, 55A	Q6004D3RP exceeds requirement
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	Equivalent
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent

Engineering Selection Recommendations

The Q6004D3RP is electrically and mechanically compatible with the BCR3AS-12A#B00 for applications requiring 600V blocking voltage and 3A on-state current in a Surface Mount TO-252-3 package. Both components maintain RoHS3 compliance and operate across the same industrial temperature range.

The Q6004D3RP features a Logic - Sensitive Gate design with lower gate trigger voltage (1.3V) and gate trigger current (10mA) compared to the standard gate characteristics of the BCR3AS-12A#B00. This results in easier gate drive requirements and lower power consumption in the gate circuit. The higher current rating (4A) and surge current capability (46A, 55A) provide additional design margin.

The Q6004D3RP is currently active in production with 3881 pieces available in stock, whereas the BCR3AS-12A#B00 is discontinued. For new designs or production continuation, the Q6004D3RP is the recommended substitute.

Frequently Asked Questions (FAQ)

Q: Can the Q6004D3RP directly replace the BCR3AS-12A#B00 in existing designs?

A: Yes, for applications requiring 600V blocking voltage and 3A on-state current. The identical TO-252-3 package and operating temperature range ensure mechanical and thermal compatibility. Gate drive circuits may require adjustment due to lower trigger voltage and current specifications of the Q6004D3RP.

Q: What is the difference between Standard and Logic - Sensitive Gate TRIAC types?

A: Standard TRIACs require higher gate trigger voltage and current to switch. Logic - Sensitive Gate TRIACs (such as the Q6004D3RP) are designed to switch with lower gate drive requirements, reducing power consumption and simplifying gate drive circuit design.

Q: Are both parts qualified for the same applications?

A: Both parts meet the same voltage (600V), current (3A minimum), package (TO-252-3), and temperature (-40°C to 125°C) requirements. The Q6004D3RP's lower gate trigger specifications make it suitable for logic-level gate drive circuits, while the BCR3AS-12A#B00 requires higher gate drive levels.

Q: What is the significance of the higher surge current rating in the Q6004D3RP?

A: The Q6004D3RP's higher non-repetitive surge current rating (46A, 55A vs. 30A) provides greater protection against transient overcurrent events and offers additional design margin for applications with inductive loads or switching transients.

Q: Why is the BCR3AS-12A#B00 discontinued?

A: Product discontinuation is determined by manufacturer production decisions and market demand. The Q6004D3RP from Littelfuse provides equivalent functionality with active production status and improved gate drive characteristics.

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