CDLL4619E3/TR Equivalent & Substitute Parts

Part Overview

The CDLL4619E3/TR is a Zener diode voltage regulator manufactured by Microchip Technology, classified as a surface mount component in the DO-213AA package. This device functions as a 3 V voltage regulator with 500 mW power dissipation capability and ±5% tolerance. The part is currently in active production status with 697 units available in new original inventory. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring identical electrical and mechanical specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	3	V
Tolerance	±5	%
Power - Max	500	mW
Impedance (Max)	1600	Ohms
Current - Reverse Leakage @ Vr	800	nA @ 1 V
Voltage - Forward (Vf) (Max) @ If	1.1	V @ 200 mA
Operating Temperature Range	-65 to 175	°C
Mounting Type	Surface Mount	—
Package / Case	DO-213AA	—
RoHS Status	ROHS3 Compliant	—
REACH Status	REACH Unaffected	—

Substitute Part Grouping Explanation

Substitute parts for the CDLL4619E3/TR are identified based on strict equivalence across the following critical parameters:

Nominal Zener Voltage: 3 V
Tolerance: ±5%
Maximum Power Dissipation: 500 mW
Maximum Impedance: 1600 Ohms
Forward Voltage: 1.1 V @ 200 mA
Operating Temperature Range: -65°C to 175°C
Package Type: DO-213AA surface mount
Packaging Format: Tape & Reel (TR)
Regulatory Compliance: ROHS3 Compliant, REACH Unaffected

The substitute part 1N4619UR/TR meets all specified electrical parameters and mechanical requirements, enabling direct functional replacement in circuit applications. Both parts are manufactured by Microchip Technology and maintain identical performance characteristics within the defined tolerance bands.

Parameter Comparison

Parameter	CDLL4619E3/TR	1N4619UR/TR	Match Status
Manufacturer	Microchip Technology	Microchip Technology	Identical
Category	Diodes, Zener	Diodes, Zener	Identical
Voltage - Zener (Nom)	3 V	3 V	Identical
Tolerance	±5%	±5%	Identical
Power - Max	500 mW	500 mW	Identical
Impedance (Max)	1600 Ohms	1600 Ohms	Identical
Voltage - Forward (Vf) (Max) @ If	1.1 V @ 200 mA	1.1 V @ 200 mA	Identical
Operating Temperature Range	-65°C to 175°C	-65°C to 175°C	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Package / Case	DO-213AA	DO-213AA	Identical
Packaging Format	Tape & Reel (TR)	Tape & Reel (TR)	Identical
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
REACH Status	REACH Unaffected	REACH Unaffected	Identical
Current - Reverse Leakage @ Vr	800 nA @ 1 V	400 nA @ 1 V	Within Specification
Product Status	Active	Active	Identical
Inventory Availability	697 Pcs	1232 Pcs	Both In Stock

Engineering Selection Recommendations

Both CDLL4619E3/TR and 1N4619UR/TR are active production components manufactured by Microchip Technology with full ROHS3 compliance and REACH unaffected status. Selection between these parts is based on the following engineering criteria:

CDLL4619E3/TR is the primary specified part with 697 units in current inventory. This part maintains all required electrical specifications and regulatory certifications for direct circuit implementation.

1N4619UR/TR is a parametric equivalent substitute with 1232 units in inventory. This part provides identical electrical performance across all critical parameters. The reverse leakage current specification of 400 nA @ 1 V is lower than the primary part's 800 nA @ 1 V specification, representing improved performance within the same functional class. Both parts are qualified for the same operating temperature range and package configuration.

Selection of either part is determined by procurement availability, inventory position, and supply chain requirements. Both parts satisfy identical functional and compliance requirements for voltage regulation applications requiring 3 V Zener diodes in surface mount DO-213AA packaging.

Frequently Asked Questions (FAQ)

Q: Can 1N4619UR/TR be used as a direct replacement for CDLL4619E3/TR?

A: Yes. Both parts are parametric equivalents with identical nominal Zener voltage (3 V), tolerance (±5%), maximum power dissipation (500 mW), impedance (1600 Ohms), forward voltage (1.1 V @ 200 mA), and operating temperature range (-65°C to 175°C). Both are surface mount components in DO-213AA packaging supplied on Tape & Reel. Direct substitution is supported for all circuit applications.

Q: Are there differences in reverse leakage current between these parts?

A: The CDLL4619E3/TR specifies 800 nA @ 1 V reverse leakage current, while the 1N4619UR/TR specifies 400 nA @ 1 V. Both values are within acceptable operating parameters for Zener diode voltage regulators. The lower leakage current of the 1N4619UR/TR represents improved performance characteristics within the same functional specification.

Q: Do both parts meet the same regulatory compliance requirements?

A: Yes. Both CDLL4619E3/TR and 1N4619UR/TR are ROHS3 compliant and REACH unaffected. Both parts carry identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications.

Q: What is the difference in packaging between these parts?

A: Both parts are supplied in identical packaging: Tape & Reel (TR) format in DO-213AA surface mount package configuration. No packaging differences exist between the two parts.

Q: Which part should be selected based on inventory availability?

A: The 1N4619UR/TR has higher inventory availability (1232 units) compared to CDLL4619E3/TR (697 units). Selection based on inventory position depends on procurement lead time requirements and supply chain strategy.

Q: Are both parts suitable for high-temperature applications?

A: Yes. Both parts operate across the identical temperature range of -65°C to 175°C, supporting applications requiring extended temperature performance.

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