CSL0901ET1C Equivalent & Substitute Parts

Part Overview

The CSL0901ET1C is an active, automotive-grade green LED indicator manufactured by Rohm Semiconductor. This surface-mount device operates at a forward voltage of 3V and delivers 360 millicandela at 5mA test current. The component is packaged in industry-standard 0603 (1608 Metric) format with a rectangular domed-top lens optimized for indication applications. Finding equivalent substitute parts is necessary to ensure supply chain flexibility, manage inventory across multiple procurement channels, and maintain design continuity when primary part availability is constrained.

Substiute Parts

CSL0901ET1C

Rohm SemiconductorIn Stock: 2801CSL0901ET1C Datasheet

Current PartRFQ

CSL0901ET1

Rohm SemiconductorIn Stock: 2833CSL0901ET1 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CSL0901ET1C is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Package / Case: 0603 (1608 Metric)
• Color: Green
• Wavelength - Dominant: 527nm
• Mounting Type: Surface Mount
• Millicandela Rating: 360mcd
• Lens Style: Rectangle with Domed Top
• Current - Test: 5mA
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 3 (168 Hours)

Allowable Variation Parameters:

• Voltage - Forward (Vf) (Typ): Tolerance of ±0.1V permitted within the same series

The CSL0901ET1 qualifies as a parametric equivalent because it maintains identical mechanical, optical, and electrical characteristics with the exception of forward voltage, which varies by 0.1V (2.9V versus 3V). Both parts belong to the CSL0901x series and share identical package geometry, lens configuration, and performance ratings.

Parameter Comparison

Engineering Selection Recommendations

Both the CSL0901ET1C and CSL0901ET1 are active products manufactured by Rohm Semiconductor and maintain full compliance with automotive qualification standards (AEC-Q102). Selection between these parts is based on circuit design requirements and forward voltage tolerance specifications.

The CSL0901ET1C operates at 3V forward voltage and is suitable for applications where the circuit design specifies this exact voltage characteristic. The CSL0901ET1 operates at 2.9V forward voltage and is suitable for applications where the circuit design accommodates this lower voltage specification. Both parts deliver identical optical performance (360mcd at 527nm dominant wavelength) and are mechanically interchangeable in 0603 surface-mount footprints.

Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across automotive and industrial applications. Moisture sensitivity level (MSL 3) is identical for both parts, requiring identical handling and storage protocols during manufacturing and assembly operations.

Frequently Asked Questions (FAQ)

Q: Can CSL0901ET1 be used as a direct replacement for CSL0901ET1C?

A: Yes. The CSL0901ET1 is a parametric equivalent substitute for the CSL0901ET1C. Both parts share identical package geometry (0603), optical characteristics (360mcd, 527nm green), and mechanical specifications. The forward voltage differs by 0.1V (2.9V versus 3V), which is within acceptable tolerance for most indication circuit designs. Verify that your circuit design accommodates the 2.9V forward voltage specification before substitution.

Q: Are there any mechanical compatibility issues between these parts?

A: No. Both parts are packaged in 0603 (1608 Metric) format with identical dimensions (1.60mm L x 0.80mm W, 1.34mm maximum height) and identical lens configuration (rectangle with domed top, 1.14mm x 0.80mm). They are mechanically interchangeable on standard 0603 surface-mount footprints.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the CSL0901ET1C and CSL0901ET1 are automotive-grade components qualified to AEC-Q102 standard. Both maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility for automotive applications.

Q: What is the significance of the forward voltage difference?

A: The CSL0901ET1C operates at 3V forward voltage while the CSL0901ET1 operates at 2.9V forward voltage. This 0.1V difference affects circuit design calculations for series resistor sizing and power dissipation. Verify that your circuit design accommodates the lower forward voltage of the CSL0901ET1 before substitution. Both parts deliver identical luminous intensity (360mcd) at their respective rated test currents (5mA).

Q: Are the moisture sensitivity and handling requirements identical?

A: Yes. Both parts carry MSL 3 (168 Hours) moisture sensitivity level rating. They require identical handling, storage, and reflow protocols during manufacturing and assembly operations.

Q: Can these parts be used interchangeably in production?

A: Yes, provided that your circuit design accommodates the forward voltage specification of the substitute part. Both parts are active products with stable supply status and identical compliance certifications. Verify forward voltage tolerance in your circuit design before implementing substitution in production.