2EZ11D5-TP Zener Diode Equivalent & Substitute Parts

Part Overview

The 2EZ11D5-TP is an 11 V, 2 W Zener diode manufactured by Micro Commercial Co in DO-41 axial through-hole packaging. This component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain discontinuity, or application-specific packaging preferences while maintaining the same nominal voltage rating and tolerance specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	11	V
Tolerance	±5%	%
Power - Max	2	W
Impedance (Max)	4	Ohms
Current - Reverse Leakage @ Vr	1	µA @ 8.4 V
Voltage - Forward (Vf) (Max) @ If	1.2	V @ 200 mA
Operating Temperature Range	-55 to 150	°C
Mounting Type	Through Hole	-
Package / Case	DO-204AL, DO-41, Axial	-
RoHS Status	ROHS3 Compliant	-

Substitute Part Grouping Explanation

Substitute parts for the 2EZ11D5-TP are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

Voltage - Zener (Nom): 11 V (exact match required)
Tolerance: ±5% (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: DO-41 or DO-204AL axial configuration (exact match required)

Secondary Compatibility Parameters:

Power - Max: Substitute must equal or exceed 2 W rating
Impedance (Max): Substitute must equal or be lower than 4 Ohms
Operating Temperature Range: Substitute must encompass or exceed -55°C to 150°C
RoHS and REACH Compliance: Substitute must maintain equivalent regulatory status

The identified substitutes (1N4741A and BZX85C11) share the identical 11 V nominal voltage and ±5% tolerance specification. Both are through-hole mounted in DO-41 axial packaging. Differences in maximum power dissipation, impedance characteristics, and operating temperature ranges are documented in the parameter comparison table for application-specific evaluation.

Parameter Comparison

Parameter	2EZ11D5-TP	1N4741A	BZX85C11	Unit
Manufacturer	Micro Commercial Co	Lumimax Optoelectronic Technology	Taiwan Semiconductor Corporation	-
Voltage - Zener (Nom)	11	11	11	V
Tolerance	±5%	±5%	±5%	%
Power - Max	2	1	1.3	W
Impedance (Max)	4	8	8	Ohms
Current - Reverse Leakage @ Vr	1 µA @ 8.4 V	5 µA @ 8.4 V	500 nA @ 8.2 V	-
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 200 mA	1.2 V @ 200 mA	1.2 V @ 10 mA	-
Operating Temperature Range	-55 to 150	-65 to 200	-65 to 200	°C
Mounting Type	Through Hole	Through Hole	Through Hole	-
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	-
Supplier Device Package	DO-41	DO-41G	DO-204AL (DO-41)	-
RoHS Status	ROHS3 Compliant	RoHS Compliant	ROHS3 Compliant	-
Product Status	Active	Active	Active	-
Inventory (Pcs)	6188	62070	689	-

Engineering Selection Recommendations

2EZ11D5-TP (Primary Component)

The 2EZ11D5-TP remains the primary selection when maximum power dissipation of 2 W is required within the specified operating temperature range of -55°C to 150°C. This component offers the lowest impedance specification (4 Ohms maximum) among the three options, providing superior voltage regulation characteristics. RoHS3 compliance and Active product status confirm ongoing manufacturer support and regulatory alignment.

1N4741A (Substitute - Lower Power Applications)

The 1N4741A is suitable for applications where power dissipation does not exceed 1 W. This substitute provides extended operating temperature range (-65°C to 200°C) and higher inventory availability (62070 pieces). The impedance specification of 8 Ohms maximum represents a trade-off in voltage regulation performance. RoHS compliance status is confirmed. Packaging is supplied as DO-41G variant.

BZX85C11 (Substitute - Intermediate Power Applications)

The BZX85C11 bridges the power dissipation gap between 1N4741A and 2EZ11D5-TP with a 1.3 W maximum rating. This component features the lowest reverse leakage current (500 nA @ 8.2 V) and extended operating temperature range (-65°C to 200°C). RoHS3 compliance matches the primary component. Limited inventory (689 pieces) may impact availability. Packaging is supplied as DO-204AL (DO-41) variant.

Compliance and Regulatory Status

All three components maintain REACH unaffected designation and EAR99 ECCN classification. RoHS compliance is confirmed across all options. Selection between ROHS3 Compliant (2EZ11D5-TP and BZX85C11) and RoHS Compliant (1N4741A) depends on specific regulatory requirements of the end application.

Frequently Asked Questions (FAQ)

Q: Can 1N4741A directly replace 2EZ11D5-TP in all applications?

A: Direct replacement is limited to applications where power dissipation does not exceed 1 W. The 1N4741A maximum power rating of 1 W is 50% lower than the 2EZ11D5-TP specification of 2 W. Applications requiring the full 2 W dissipation capability must use either the primary component or BZX85C11 (1.3 W maximum).

Q: What is the significance of impedance differences between these parts?

A: Impedance (Zzt) directly affects voltage regulation performance. The 2EZ11D5-TP impedance of 4 Ohms maximum provides superior voltage stability compared to 1N4741A and BZX85C11 at 8 Ohms maximum. Applications requiring tight voltage regulation should prioritize the lower impedance specification.

Q: Are the DO-41 and DO-204AL packages mechanically interchangeable?

A: Yes. DO-41 and DO-204AL are equivalent designations for the same axial through-hole package configuration. Both refer to a two-lead cylindrical component with identical mechanical dimensions and PCB mounting characteristics.

Q: Does the extended operating temperature range of 1N4741A and BZX85C11 affect substitution suitability?

A: Extended temperature range (-65°C to 200°C versus -55°C to 150°C) provides additional operational margin but does not enable substitution in applications requiring the 2 W power dissipation specification. Temperature range extension is a secondary benefit when power requirements are satisfied.

Q: What is the impact of reverse leakage current differences on circuit performance?

A: Reverse leakage current affects standby power consumption and circuit stability. The BZX85C11 exhibits the lowest reverse leakage (500 nA @ 8.2 V), followed by 2EZ11D5-TP (1 µA @ 8.4 V), and 1N4741A (5 µA @ 8.4 V). Applications with stringent leakage requirements should prioritize BZX85C11 or 2EZ11D5-TP.

Q: How do packaging variants (DO-41, DO-41G, DO-204AL) affect component selection?

A: All three packaging designations represent the same axial through-hole form factor with identical PCB footprints and lead spacing. Packaging variant designations reflect manufacturer-specific nomenclature but do not affect mechanical or electrical compatibility in standard through-hole applications.

Q: Is inventory availability a factor in substitution decisions?

A: Inventory levels (2EZ11D5-TP: 6188 pcs, 1N4741A: 62070 pcs, BZX85C11: 689 pcs) may influence supply chain decisions but must not override electrical and mechanical compatibility requirements. Component selection must first satisfy application specifications, with inventory status as a secondary consideration.

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