L2008V8TP Equivalent & Substitute Parts

Part Overview

The L2008V8TP is a Logic-Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 200 V off-state voltage and 8 A on-state current in a TO-251 through-hole package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts maintain functional compatibility while offering enhanced voltage ratings and active product status.

Key Parameters

Parameter	Value
Triac Type	Logic - Sensitive Gate
Voltage - Off State	200 V
Current - On State (It (RMS)) (Max)	8 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	10 mA
Current - Hold (Ih) (Max)	20 mA
Operating Temperature Range	-40°C ~ 110°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the L2008V8TP are qualified based on the following criteria:

Maintained Parameters (Substitution Basis):

Triac Type: Logic - Sensitive Gate
Current - On State (It (RMS)) (Max): 8 A
Voltage - Gate Trigger (Vgt) (Max): 1.3 V
Current - Gate Trigger (Igt) (Max): 10 mA
Current - Hold (Ih) (Max): 20 mA
Current - Non Rep. Surge 50, 60Hz (Itsm): 65 A / 85 A
Operating Temperature Range: -40°C ~ 110°C (TJ)
Mounting Type: Through Hole
Package / Case: TO-251-3 Short Leads, IPak, TO-251AA
RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level (MSL): 1 (Unlimited)

Variable Parameter (Differentiation):

Voltage - Off State: 200 V (main part) vs. 400 V / 600 V (substitutes)

The substitute parts L4008V8TP and L6008V8TP provide higher off-state voltage ratings while maintaining all other electrical and mechanical specifications. These parts are suitable for applications where the L2008V8TP's 200 V rating is insufficient or where higher voltage margin is required.

Parameter Comparison

Parameter	L2008V8TP	L4008V8TP	L6008V8TP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse Inc.
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	200 V	400 V	600 V
Current - On State (It (RMS)) (Max)	8 A	8 A	8 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V	1.3 V
Current - Gate Trigger (Igt) (Max)	10 mA	10 mA	10 mA
Current - Hold (Ih) (Max)	20 mA	20 mA	20 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	65 A / 85 A	65 A / 85 A	65 A / 85 A
Operating Temperature Range	-40°C ~ 110°C (TJ)	-40°C ~ 110°C (TJ)	-40°C ~ 110°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active	Active

Engineering Selection Recommendations

L4008V8TP (400 V Rating): This substitute provides a 2× voltage margin over the L2008V8TP while maintaining identical gate trigger characteristics and current ratings. Suitable for applications requiring moderate voltage headroom and active product support.

L6008V8TP (600 V Rating): This substitute provides a 3× voltage margin over the L2008V8TP. Both substitute parts carry Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment. The L6008V8TP offers the highest voltage rating within the substitute group.

Selection between L4008V8TP and L6008V8TP depends on the application's voltage requirements and design margin specifications. Both parts are electrically and mechanically compatible with the L2008V8TP in terms of gate control, current handling, and thermal characteristics.

Frequently Asked Questions (FAQ)

Q: Can L4008V8TP or L6008V8TP be used as direct replacements for L2008V8TP?

A: Yes, both parts are direct substitutes. They maintain identical gate trigger voltage, gate trigger current, hold current, on-state current rating, operating temperature range, and package configuration. The primary difference is the off-state voltage rating.

Q: What is the advantage of using a higher voltage-rated TRIAC?

A: Higher voltage ratings provide increased design margin and protection against voltage transients. The L4008V8TP and L6008V8TP offer greater voltage headroom while maintaining all other electrical specifications of the L2008V8TP.

Q: Are the substitute parts available in the same package?

A: Yes. All three parts use the TO-251-3 Short Leads (IPak, TO-251AA) through-hole package, ensuring identical PCB layout and mounting compatibility.

Q: Do the substitute parts have the same gate sensitivity?

A: Yes. All three parts maintain the same Voltage - Gate Trigger (Vgt) maximum of 1.3 V and Current - Gate Trigger (Igt) maximum of 10 mA, ensuring identical gate control characteristics.

Q: What is the product status difference?

A: The L2008V8TP is classified as Obsolete, while L4008V8TP and L6008V8TP are Active products. Active status ensures ongoing manufacturing support and long-term availability.

Q: Are all parts RoHS compliant?

A: Yes. All three parts are ROHS3 Compliant with Moisture Sensitivity Level 1 (Unlimited), meeting current environmental and regulatory requirements.

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