EC103M3AP Equivalent & Substitute Parts

Part Overview

The EC103M3AP is a Sensitive Gate SCR (Silicon Controlled Rectifier) rated for 600V off-state voltage and 800mA RMS current, manufactured by Littelfuse in a through-hole TO-92 package. This component is classified as Active product status and is ROHS3 compliant. Alternative parts may be required due to inventory constraints, supply chain considerations, or specific application requirements where equivalent electrical and mechanical characteristics are acceptable.

Substiute Parts

EC103M3AP

LittelfuseIn Stock: 780EC103M3AP Datasheet

Current PartRFQ

X00602MA 1AA2

STMicroelectronicsIn Stock: 7623X00602MA 1AA2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the EC103M3AP with the X00602MA 1AA2 is based on the following critical parameters that must remain equivalent:

• Off-state voltage rating: Both parts rated at 600V
• RMS current rating: Both parts rated at 800mA
• SCR type classification: Both are Sensitive Gate SCRs
• Mounting configuration: Both use through-hole TO-92-3 package
• Gate trigger voltage: Both specified at 800mV maximum
• Hold current: Both specified at 5mA maximum
• Off-state leakage current: Both specified at 1µA maximum

The X00602MA 1AA2 meets these core substitution criteria. Differences exist in gate trigger current (Igt), on-state voltage (Vtm), surge current ratings, and operating temperature range, which are documented in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

Both the EC103M3AP and X00602MA 1AA2 are Active product status components with ROHS3 compliance and REACH unaffected status, making them suitable for applications requiring regulatory compliance. The X00602MA 1AA2 offers an extended operating temperature range to 125°C compared to the EC103M3AP at 110°C maximum, providing additional thermal margin in high-temperature environments. The X00602MA 1AA2 demonstrates lower on-state voltage (1.35V vs 1.7V), which reduces power dissipation during conduction. Selection between these parts should be based on specific application requirements regarding gate trigger current sensitivity, surge current handling capability, and thermal operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the X00602MA 1AA2 directly replace the EC103M3AP in existing designs?

A: Both parts share identical off-state voltage (600V), RMS current rating (800mA), gate trigger voltage (800mV maximum), hold current (5mA), and off-state leakage current (1µA) specifications. Both use the TO-92-3 through-hole package. Direct substitution is electrically and mechanically compatible for applications within the specified parameter ranges.

Q: What are the key differences between these parts?

A: The X00602MA 1AA2 has a higher gate trigger current requirement (200µA vs 50µA), lower on-state voltage (1.35V vs 1.7V), lower surge current ratings (9A/10A vs 16A/20A), and an extended operating temperature range (-40 to 125°C vs -40 to 110°C).

Q: Which part should be selected for high-temperature applications?

A: The X00602MA 1AA2 supports operation to 125°C, providing 15°C additional thermal margin compared to the EC103M3AP rated to 110°C.

Q: Are there package compatibility concerns?

A: Both parts use the TO-92-3 through-hole package with identical mechanical form factor and pin configuration, ensuring direct board-level compatibility.

Q: How do the gate trigger current differences affect circuit design?

A: The EC103M3AP requires lower gate trigger current (50µA maximum) compared to the X00602MA 1AA2 (200µA maximum). Applications with gate drive circuits designed for the lower current requirement of the EC103M3AP must verify adequate gate current availability when substituting the X00602MA 1AA2.