L6N5 TRIAC Equivalent & Substitute Parts

Part Overview

The L6N5 is a Logic - Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 600 V off-state voltage and 1 A on-state current in a surface mount DO-214AA package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility across gate trigger characteristics, current ratings, and thermal operating ranges to ensure reliable circuit performance.

Key Parameters

Parameter	Value
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	1 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	5 mA
Current - Hold (Ih) (Max)	10 mA
Operating Temperature Range	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	DO-214AA, SMB (3 Leads), Compak
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the L6N5 is determined by the following critical parameters:

Voltage Rating: Off-state voltage must be 600 V or greater
Current Rating: On-state current (It (RMS)) must be 1 A or greater
Gate Trigger Voltage (Vgt): Maximum 1.3 V ensures gate drive circuit compatibility
Gate Trigger Current (Igt): Maximum 5 mA defines gate control requirements
Hold Current (Ih): Maximum 10 mA establishes minimum holding conditions
Temperature Range: Operating range must encompass -40°C to 125°C
Mounting Type: Surface mount configuration required
Compliance: RoHS compliance status for regulatory alignment

Substitute parts are grouped based on adherence to these parameters. Parts meeting all criteria are classified as direct functional equivalents.

Parameter Comparison

Parameter	L6N5 (Main)	L6N5RP (Littelfuse)	BT131W-600,135 (WeEn)
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	WeEn Semiconductors
Product Status	Obsolete	Active	Active
Voltage - Off State	600 V	600 V	600 V
Current - On State (It (RMS)) (Max)	1 A	1 A	1 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V	1.5 V
Current - Gate Trigger (Igt) (Max)	5 mA	5 mA	3 mA
Current - Hold (Ih) (Max)	10 mA	10 mA	5 mA
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	125°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	DO-214AA, SMB (3 Leads), Compak	DO-214AA, SMB (3 Leads), Compak	TO-261-4, TO-261AA, SC-73
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

L6N5RP (Littelfuse Inc.) is the primary substitute for the obsolete L6N5. This part maintains identical electrical specifications across all critical parameters: 600 V off-state voltage, 1 A on-state current, 1.3 V maximum gate trigger voltage, 5 mA maximum gate trigger current, and 10 mA maximum hold current. The operating temperature range of -40°C to 125°C matches the original specification. L6N5RP is currently in active production status with 5855 units in stock, ensuring supply continuity. Both parts share the same package configuration (DO-214AA, SMB 3 Leads, Compak) and maintain ROHS3 compliance.

BT131W-600,135 (WeEn Semiconductors) is an alternative substitute with manufacturer recommendation status. This part meets the core voltage and current ratings (600 V, 1 A) and operates within the required temperature range. However, the gate trigger voltage specification is 1.5 V maximum, which exceeds the L6N5 specification of 1.3 V. The gate trigger current is 3 mA (lower than the 5 mA specification) and hold current is 5 mA (lower than the 10 mA specification). The package configuration differs (TO-261-4, TO-261AA, SC-73 versus DO-214AA). These parameter variations require circuit-level evaluation to confirm compatibility in the target application. BT131W-600,135 is currently in active production with 678 units in stock.

Frequently Asked Questions (FAQ)

Q: Can L6N5RP be used as a direct replacement for L6N5?

A: Yes. L6N5RP is a direct functional equivalent. Both parts are manufactured by Littelfuse Inc. and share identical electrical specifications for voltage rating, current rating, gate trigger characteristics, and operating temperature range. The primary difference is product status: L6N5 is obsolete while L6N5RP is active production. Package configuration and compliance certifications are identical.

Q: What are the key differences between L6N5RP and BT131W-600,135?

A: Both parts meet the 600 V voltage and 1 A current requirements. However, BT131W-600,135 has a higher gate trigger voltage specification (1.5 V versus 1.3 V), lower gate trigger current (3 mA versus 5 mA), and lower hold current (5 mA versus 10 mA). The package configuration also differs: BT131W-600,135 uses TO-261-4/SC-73 while L6N5 and L6N5RP use DO-214AA. These differences may affect gate drive circuit design and PCB layout.

Q: Is package compatibility a concern when substituting these parts?

A: Yes. L6N5 and L6N5RP both use DO-214AA (SMB 3 Leads, Compak) packaging, making them mechanically interchangeable on existing PCBs. BT131W-600,135 uses TO-261-4 (SC-73) packaging, which has different pin configuration and footprint. PCB redesign would be required to accommodate BT131W-600,135.

Q: Are all substitute parts RoHS compliant?

A: Yes. L6N5RP maintains ROHS3 compliance matching the original part. BT131W-600,135 is RoHS compliant. Both alternatives meet regulatory requirements for restricted substance elimination.

Q: What is the inventory status of these substitute parts?

A: L6N5RP has 5855 units in stock (active production). BT131W-600,135 has 678 units in stock (active production). Both parts are available for immediate procurement.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message