1N4741A_S00Z Zener Diode Equivalent & Substitute Parts

Part Overview

The 1N4741A_S00Z is an 11V, 1W Zener diode manufactured by onsemi in a DO-41 through-hole package. This component is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and production requirements. The part maintains full electrical and mechanical compatibility with specified substitute components that share identical nominal voltage, power rating, tolerance, and package specifications.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	11	V
Power - Max	1	W
Tolerance	±5%	%
Impedance (Max)	8	Ohms
Operating Temperature Range	-65 to 200	°C
Mounting Type	Through Hole	-
Package / Case	DO-204AL, DO-41, Axial	-

Substitute Part Grouping Explanation

Substitution of the 1N4741A_S00Z is determined by strict equivalence across the following electrical and mechanical parameters:

Critical Substitution Parameters:

Voltage - Zener (Nom): 11 V
Power - Max: 1 W
Tolerance: ±5%
Impedance (Max): 8 Ohms
Operating Temperature Range: -65°C to 200°C
Mounting Type: Through Hole
Package / Case: DO-204AL, DO-41, Axial

All identified substitute parts meet these specifications without deviation. Substitutes are grouped by manufacturer and product status to facilitate procurement decisions based on availability and compliance requirements.

Parameter Comparison

Parameter	1N4741A_S00Z (onsemi)	1N4741A (Lumimax)	1N4741A,133 (NXP)	BZX85C11TR5K (onsemi)
Voltage - Zener (Nom)	11 V	11 V	11 V	11 V
Tolerance	±5%	±5%	±5%	±5%
Power - Max	1 W	1 W	1 W	1 W
Impedance (Max)	8 Ohms	8 Ohms	8 Ohms	8 Ohms
Current - Reverse Leakage @ Vr	5 µA @ 8.4 V	5 µA @ 8.4 V	5 µA @ 8.4 V	500 nA @ 7.7 V
Voltage - Forward (Vf) (Max) @ If	Not specified	1.2 V @ 200 mA	1.2 V @ 200 mA	1.2 V @ 200 mA
Operating Temperature	-65°C ~ 200°C	-65°C ~ 200°C	-65°C ~ 200°C	-65°C ~ 200°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial	DO-204AL, DO-41, Axial
Product Status	Obsolete	Active	Active	Active
RoHS Status	Not specified	RoHS Compliant	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitute: 1N4741A,133 (NXP Semiconductors)

The 1N4741A,133 from NXP Semiconductors is the recommended primary substitute. This part maintains complete electrical and mechanical equivalence to the 1N4741A_S00Z across all critical parameters. NXP's part carries active product status with 19,510 units in stock, ensuring supply continuity. The component is supplied in bulk packaging and meets REACH compliance requirements.

Secondary Substitute: BZX85C11TR5K (onsemi)

The BZX85C11TR5K from onsemi provides an alternative from the original manufacturer. This part is supplied in tape and reel packaging (5,000-unit reels) and maintains full electrical equivalence. The BZX85C11TR5K demonstrates superior reverse leakage characteristics (500 nA @ 7.7 V versus 5 µA @ 8.4 V) and carries ROHS3 compliance certification. This option is suitable for high-volume production environments requiring reel packaging.

Tertiary Substitute: 1N4741A (Lumimax Optoelectronic Technology)

The 1N4741A from Lumimax provides an alternative source with the highest inventory availability (62,070 units). This part is supplied in tape and box packaging and is RoHS compliant. Selection of this substitute is appropriate when supply from primary sources is constrained.

All three substitutes are electrically and mechanically interchangeable with the obsolete 1N4741A_S00Z within the specified parameter tolerances.

Frequently Asked Questions (FAQ)

Q: Can the 1N4741A,133 directly replace the 1N4741A_S00Z in existing designs?

A: Yes. The 1N4741A,133 maintains identical electrical specifications (11V nominal voltage, 1W power rating, ±5% tolerance, 8 Ohms maximum impedance) and physical package (DO-41 through-hole). No circuit modifications are required.

Q: What is the difference between the BZX85C11TR5K and the 1N4741A substitutes?

A: The BZX85C11TR5K differs in reverse leakage current specification (500 nA @ 7.7 V versus 5 µA @ 8.4 V) and packaging format (tape and reel versus bulk or tape and box). Both maintain identical nominal voltage, power rating, and tolerance specifications. The BZX85C11TR5K is suitable for applications requiring lower reverse leakage characteristics.

Q: Are there compliance differences between substitute options?

A: The BZX85C11TR5K carries ROHS3 certification. The 1N4741A from Lumimax is RoHS compliant. All parts are REACH unaffected or have REACH information available. Selection should align with specific compliance requirements of the end application.

Q: What packaging formats are available for these substitutes?

A: The 1N4741A,133 is supplied in bulk packaging. The BZX85C11TR5K is supplied in tape and reel format (5,000-unit reels). The 1N4741A from Lumimax is supplied in tape and box packaging. Package selection depends on production volume and assembly process requirements.

Q: Can these substitutes be used interchangeably in the same circuit?

A: Yes. All substitute parts meet the identical electrical and mechanical specifications required for the 1N4741A_S00Z. Interchangeability is confirmed across voltage regulation, power dissipation, impedance, and temperature operating range parameters.

Q: Which substitute offers the best long-term availability?

A: The 1N4741A,133 from NXP Semiconductors carries active product status with established supply channels. The BZX85C11TR5K from onsemi (the original manufacturer) also maintains active status. Both are suitable for long-term production commitments.

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