Q4010RH5 Equivalent & Substitute Parts

Part Overview

The Q4010RH5 is a Littelfuse Snubberless TRIAC Alternistor rated for 400 V off-state voltage and 10 A on-state current in a TO-220-3 through-hole package. This component is discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design support and procurement. The part operates across an industrial temperature range of -40°C to 125°C and is RoHS3 compliant.

Substiute Parts

Q4010RH5

Littelfuse Inc.In Stock: 847Q4010RH5 Datasheet

Current PartRFQ

BTB10-600BWRG

STMicroelectronicsIn Stock: 15461BTB10-600BWRG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The BTB10-600BWRG qualifies as a direct substitute based on the following electrical and mechanical compatibility criteria:

Matching Parameters:

• TRIAC Type: Both are Snubberless Alternistor configurations
• Current - On State (It (RMS)): Both rated at 10 A maximum
• Voltage - Gate Trigger (Vgt) (Max): Both at 1.3 V
• Current - Gate Trigger (Igt) (Max): Both at 50 mA
• Current - Hold (Ih) (Max): Both at 50 mA
• Operating Temperature Range: Both -40°C ~ 125°C
• Mounting Type: Both Through Hole
• Package / Case: Both TO-220-3
• RoHS Status: Both ROHS3 Compliant

Voltage Consideration: The BTB10-600BWRG operates at 600 V off-state voltage, which exceeds the Q4010RH5 specification of 400 V. This higher voltage rating provides enhanced margin for applications originally designed for 400 V operation and does not create incompatibility.

Parameter Comparison

Engineering Selection Recommendations

The BTB10-600BWRG is an active product from STMicroelectronics with established supply availability (15,400 pcs in stock). Both components maintain ROHS3 compliance and identical operating temperature specifications. The substitute part's higher voltage rating (600 V vs. 400 V) provides additional design margin without introducing electrical incompatibility in circuits originally specified for the Q4010RH5. Selection of the BTB10-600BWRG eliminates obsolescence risk associated with the discontinued Q4010RH5.

Frequently Asked Questions (FAQ)

Q: Can the BTB10-600BWRG directly replace the Q4010RH5 in existing designs?

A: Yes. The substitute maintains identical gate trigger voltage, gate trigger current, hold current, on-state current rating, operating temperature range, and package configuration. The higher off-state voltage rating (600 V) does not create incompatibility in 400 V applications.

Q: What is the significance of the voltage difference between 400 V and 600 V?

A: The BTB10-600BWRG's 600 V off-state rating exceeds the original 400 V specification. This provides additional voltage margin and is suitable for applications originally designed for 400 V operation. No circuit modification is required.

Q: Are the surge current ratings equivalent?

A: The Q4010RH5 specifies 110A and 120A non-repetitive surge current at 50 and 60 Hz respectively. The BTB10-600BWRG specifies 100A and 105A. Both ratings are within acceptable industrial margins for snubberless TRIAC applications.

Q: Do both parts use the same package?

A: Yes. Both components use the TO-220-3 through-hole package with identical pin configuration and mounting requirements.

Q: What is the compliance status of the substitute part?

A: The BTB10-600BWRG is ROHS3 compliant and REACH unaffected, matching the environmental compliance profile of the original Q4010RH5.