EC103D SCR 400V 800mA TO-92 Equivalent & Substitute Parts

Part Overview

The EC103D is a sensitive gate silicon controlled rectifier (SCR) rated for 400V off-state voltage and 800mA RMS on-state current in a through-hole TO-92 package. Manufactured by Littelfuse Inc., this component is classified as Active status. Equivalent and substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the thyristor category.

Key Parameters

Parameter	EC103D Value
Voltage - Off State	400 V
Voltage - Gate Trigger (Vgt) (Max)	800 mV
Current - Gate Trigger (Igt) (Max)	200 µA
Voltage - On State (Vtm) (Max)	1.7 V
Current - On State (It (RMS)) (Max)	800 mA
Current - Hold (Ih) (Max)	5 mA
Operating Temperature Range	-40°C ~ 110°C
Mounting Type	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA)
SCR Type	Sensitive Gate
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the EC103D are grouped based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

Voltage - Off State: 400V
Current - On State (It (RMS)) (Max): 800mA
SCR Type: Sensitive Gate
Mounting Type: Through Hole
Package / Case: TO-92-3 (TO-226AA)

Secondary Compatibility Factors:

Voltage - Gate Trigger (Vgt) (Max): 800mV
Current - Gate Trigger (Igt) (Max): 200µA
Operating Temperature Range
RoHS3 Compliance

Parts meeting all primary criteria are classified as parametric equivalents. Parts with variations in secondary parameters are noted for application-specific evaluation.

Parameter Comparison

Part Number	Manufacturer	Voltage - Off State	Vgt (Max)	Igt (Max)	Vtm (Max)	It (RMS) (Max)	Operating Temp	Product Status	Packaging
EC103D	Littelfuse Inc.	400 V	800 mV	200 µA	1.7 V	800 mA	-40°C ~ 110°C	Active	Bulk
2N6565	Littelfuse Inc.	400 V	800 mV	200 µA	1.7 V	800 mA	-40°C ~ 110°C	Active	Bulk
P0102DA 1AA3	STMicroelectronics	400 V	800 mV	200 µA	1.95 V	800 mA	-40°C ~ 125°C	Active	Bulk
P0102DA 2AL3	STMicroelectronics	400 V	800 mV	200 µA	1.95 V	800 mA	-40°C ~ 125°C	Active	Cut Tape (CT)
P0102DA 5AL3	STMicroelectronics	400 V	800 mV	200 µA	1.95 V	800 mA	-40°C ~ 125°C	Active	Cut Tape (CT)
P0118DA 5AL3	STMicroelectronics	400 V	800 mV	5 µA	1.95 V	800 mA	-40°C ~ 125°C	Obsolete	Cut Tape (CT)
X00602MA 1AA2	STMicroelectronics	600 V	800 mV	200 µA	1.35 V	800 mA	-40°C ~ 125°C	Active	Bulk
XL0840	STMicroelectronics	400 V	800 mV	200 µA	1.95 V	800 mA	-40°C ~ 125°C	Last Time Buy	Bulk

Engineering Selection Recommendations

Direct Parametric Equivalents (Active Status):

2N6565 (Littelfuse Inc.) is a direct parametric equivalent to EC103D with identical electrical specifications and Active product status. Both components share the same voltage rating, gate trigger characteristics, and on-state current ratings.

P0102DA 1AA3, P0102DA 2AL3, and P0102DA 5AL3 (STMicroelectronics) are functionally equivalent with 400V off-state voltage and 800mA RMS current rating. These parts feature an extended operating temperature range (-40°C ~ 125°C) compared to EC103D (-40°C ~ 110°C) and are all Active status. Packaging differs between bulk and cut tape formats.

Voltage-Rated Substitute:

X00602MA 1AA2 (STMicroelectronics) operates at 600V off-state voltage, providing higher voltage capability than EC103D. This part is suitable for applications requiring increased voltage margin while maintaining 800mA RMS current handling. Active status and extended temperature range apply.

Obsolete Status:

P0118DA 5AL3 (STMicroelectronics) carries Obsolete product status and features reduced gate trigger current (5µA maximum versus 200µA). This part is not recommended for new designs.

End-of-Life Status:

XL0840 (STMicroelectronics) is designated Last Time Buy. While electrically equivalent to EC103D, procurement should account for limited availability.

All substitute parts listed maintain ROHS3 compliance and TO-92-3 package compatibility with EC103D.

Frequently Asked Questions (FAQ)

Q: Can 2N6565 replace EC103D directly?

A: Yes. 2N6565 is a parametric equivalent with identical voltage, current, and gate trigger specifications. Both are Active status and use the same TO-92-3 package.

Q: What is the difference between EC103D and P0102DA variants?

A: P0102DA series (1AA3, 2AL3, 5AL3) are functionally equivalent at 400V/800mA but feature extended operating temperature range (-40°C ~ 125°C versus -40°C ~ 110°C). Packaging differs: 1AA3 is Bulk; 2AL3 and 5AL3 are Cut Tape. All are Active status.

Q: Can X00602MA 1AA2 be used in place of EC103D?

A: X00602MA 1AA2 operates at 600V off-state voltage, providing higher voltage rating than EC103D's 400V. It maintains 800mA RMS current and identical gate trigger specifications. Use is application-dependent based on circuit voltage requirements.

Q: Why is P0118DA 5AL3 listed if it is Obsolete?

A: P0118DA 5AL3 is included for reference in legacy system documentation. New designs should not use this part. Active alternatives include P0102DA series and XL0840.

Q: What is the significance of packaging format (Bulk vs. Cut Tape)?

A: Bulk packaging is supplied loose in containers; Cut Tape (CT) is supplied on continuous tape for automated assembly. Electrical specifications remain identical. Selection depends on assembly process requirements.

Q: Is XL0840 recommended for new designs?

A: XL0840 carries Last Time Buy status, indicating limited future availability. For new designs, select from Active status alternatives: 2N6565, P0102DA series, or X00602MA 1AA2.

Q: Do all substitute parts maintain RoHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 Compliant, matching EC103D compliance status.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message