BCR5AS-12A#B00 Equivalent & Substitute Parts

Part Overview

The BCR5AS-12A#B00 is a standard TRIAC rated for 600V off-state voltage and 5A 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 substitute parts necessary for ongoing design requirements and production continuity. The part operates across a temperature range of -40°C to 125°C and is ROHS3 compliant.

Key Parameters

Parameter	Value
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	5 A
Voltage - Gate Trigger (Vgt) (Max)	1.5 V
Current - Gate Trigger (Igt) (Max)	30 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	50A @ 60Hz
Operating Temperature Range	-40°C ~ 125°C (TJ)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the BCR5AS-12A#B00 is determined by the following critical parameters:

Voltage Rating (Off State): Must be 600V or higher to maintain electrical safety margins
Current Rating (On State): Must be equal to or greater than 5A RMS to handle design load requirements
Package Type: Must be TO-252-3 (DPAK) for mechanical and thermal compatibility
Gate Trigger Characteristics: Voltage and current thresholds must be compatible with existing gate drive circuitry
Temperature Range: Must support the operating environment of -40°C to 125°C minimum
Compliance: ROHS3 compliance required for regulatory alignment

The QJ6006DH4RP from Littelfuse Inc. meets these substitution criteria with equivalent voltage rating, higher current capacity, compatible package, and active product status.

Parameter Comparison

Parameter	BCR5AS-12A#B00 (Renesas)	QJ6006DH4RP (Littelfuse)	Compatibility
Voltage - Off State	600 V	600 V	Equivalent
Current - On State (It (RMS)) (Max)	5 A	6 A	Compatible (higher capacity)
Voltage - Gate Trigger (Vgt) (Max)	1.5 V	1.3 V	Compatible (lower threshold)
Current - Gate Trigger (Igt) (Max)	30 mA	35 mA	Compatible (higher tolerance)
Current - Non Rep. Surge 50, 60Hz (Itsm)	50A @ 60Hz	60A, 72A	Compatible (higher surge rating)
Operating Temperature Range	-40°C ~ 125°C (TJ)	-40°C ~ 150°C (TJ)	Compatible (extended range)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Discontinued at DiGi Electronics	Active	Substitute is actively available

Engineering Selection Recommendations

The QJ6006DH4RP is a direct substitute for the BCR5AS-12A#B00 based on the following factors:

Electrical Compatibility: All critical voltage and current parameters meet or exceed the original specification
Package Compatibility: Identical TO-252-3 (DPAK) package ensures mechanical fit and thermal performance without PCB redesign
Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status
Product Availability: The substitute is actively manufactured and stocked, eliminating supply chain discontinuation risk
Performance Enhancement: The substitute offers improved surge current rating and extended operating temperature range, providing design margin

Frequently Asked Questions (FAQ)

Q: Can the QJ6006DH4RP be used as a direct replacement without circuit modifications?

A: Yes. The QJ6006DH4RP maintains electrical and mechanical compatibility with the BCR5AS-12A#B00. The identical TO-252-3 package allows direct PCB substitution without layout changes. Gate trigger characteristics are compatible with standard drive circuits designed for the original part.

Q: What is the difference between a Standard TRIAC and an Alternistor TRIAC?

A: The BCR5AS-12A#B00 is classified as a Standard TRIAC, while the QJ6006DH4RP is an Alternistor (Snubberless) TRIAC. Both are functionally compatible for AC switching applications. The Alternistor design reduces snubber circuit requirements in some applications, but this does not affect basic substitution compatibility.

Q: Are there thermal considerations when substituting these parts?

A: The QJ6006DH4RP has an extended operating temperature range (-40°C to 150°C) compared to the BCR5AS-12A#B00 (-40°C to 125°C). Both parts use the same TO-252-3 package with identical thermal characteristics. Thermal performance depends on PCB layout and heat dissipation design, not the part selection.

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

A: The QJ6006DH4RP is rated for 6A on-state current versus 5A for the original part. This provides additional design margin and allows the substitute to handle higher load currents without derating. For applications requiring exactly 5A, the higher rating does not create compatibility issues.

Q: Is the packaging identical between these two parts?

A: Yes. Both the BCR5AS-12A#B00 and QJ6006DH4RP use the TO-252-3 (DPAK) package with 2 leads plus tab. Pin configuration and mechanical dimensions are identical, enabling direct PCB substitution.

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