CSL0901BT1 Equivalent & Substitute Parts

Part Overview

The CSL0901BT1 is an active, surface-mount blue LED indicator manufactured by Rohm Semiconductor. This 0603 (1608 Metric) package component operates at a forward voltage of 2.9V with a test current of 5mA and produces a dominant wavelength of 470nm. The device is designed for discrete LED indication applications requiring blue light output at 56 millicandela brightness. Substitute parts are identified to support inventory management, supply chain continuity, and application flexibility while maintaining electrical and mechanical compatibility.

Substiute Parts

CSL0901BT1

Rohm SemiconductorIn Stock: 2549CSL0901BT1 Datasheet

Current PartRFQ

CSL0901BT1C

Rohm SemiconductorIn Stock: 4861CSL0901BT1C Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CSL0901BT1 is determined by strict equivalence across the following critical parameters:

Optical Parameters: Color (Blue), dominant wavelength (470nm), and millicandela rating (56mcd) must remain constant to preserve intended indication function and visibility characteristics.

Electrical Parameters: Forward voltage (2.9V typical) and test current (5mA) must match to ensure proper circuit integration and current-limiting resistor compatibility.

Mechanical Parameters: Package type (0603/1608 Metric), physical dimensions (1.60mm L x 0.80mm W, 1.34mm max height), mounting type (Surface Mount), and lens geometry (Rectangle with Domed Top, 1.14mm x 0.80mm) must be identical to support PCB layout, reflow soldering, and mechanical assembly without modification.

Compliance Parameters: RoHS3 compliance and MSL rating (3, 168 Hours) must be maintained for regulatory and manufacturing process compatibility.

Substitute parts identified within this grouping share all specified parameters with the main part number, ensuring direct interchangeability without circuit redesign or assembly process changes.

Parameter Comparison

Engineering Selection Recommendations

CSL0901BT1C is a direct parametric equivalent to CSL0901BT1 across all specified optical, electrical, mechanical, and compliance parameters. The CSL0901BT1C carries an Automotive grade designation and AEC-Q102 qualification, indicating enhanced reliability screening and suitability for automotive applications. Both parts maintain Active product status and ROHS3 compliance.

Selection between CSL0901BT1 and CSL0901BT1C is determined by application requirements. For standard industrial and consumer applications, either part is electrically and mechanically interchangeable. For automotive applications requiring AEC-Q102 qualification, CSL0901BT1C is the appropriate selection. Both parts are manufactured by Rohm Semiconductor and share identical electrical performance, optical output, and physical form factor.

Frequently Asked Questions (FAQ)

Q: Can CSL0901BT1C be used as a direct replacement for CSL0901BT1?

A: Yes. CSL0901BT1C is a direct parametric equivalent. All specified optical parameters (color, wavelength, brightness), electrical parameters (forward voltage, test current), mechanical parameters (package, dimensions, height), and compliance ratings are identical. No circuit modification or PCB layout change is required.

Q: What is the difference between CSL0901BT1 and CSL0901BT1C?

A: The primary difference is qualification level. CSL0901BT1C carries Automotive grade designation and AEC-Q102 qualification, indicating enhanced reliability testing and suitability for automotive environments. Electrical and optical performance are identical.

Q: Are both parts compatible with the same PCB layout?

A: Yes. Both parts use the 0603 (1608 Metric) package with identical physical dimensions (1.60mm L x 0.80mm W, 1.34mm max height) and Surface Mount mounting type. PCB footprints and reflow soldering parameters are identical.

Q: Do both parts require the same current-limiting resistor value?

A: Yes. Both parts operate at 2.9V forward voltage with 5mA test current. Circuit design and resistor selection are identical.

Q: What is the MSL rating for both parts?

A: Both parts carry MSL 3 (168 Hours) rating. Moisture sensitivity handling and storage requirements are identical.

Q: Are both parts RoHS compliant?

A: Yes. Both CSL0901BT1 and CSL0901BT1C are ROHS3 compliant.

Q: Which part should be selected for automotive applications?

A: CSL0901BT1C is qualified for automotive applications with AEC-Q102 certification. For non-automotive applications, either part is suitable based on availability and inventory requirements.