1N4735A_S00Z Equivalent & Substitute Parts

Part Overview

The 1N4735A_S00Z is a Zener diode rated at 6.2 V nominal voltage with 1 W maximum power dissipation in a through-hole DO-41 package. Manufactured by onsemi, this component is classified as obsolete, necessitating identification of active equivalent alternatives for ongoing design support and procurement. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement capability in existing circuit designs.

Key Parameters

Parameter	Value	Unit
Voltage - Zener (Nom)	6.2	V
Tolerance	±5%	%
Power - Max	1	W
Impedance (Max)	2	Ohms
Current - Reverse Leakage @ Vr	10	µA @ 3 V
Operating Temperature Range	-65 to 200	°C
Mounting Type	Through Hole	—
Package / Case	DO-204AL, DO-41, Axial	—

Substitute Part Grouping Explanation

Substitute parts for the 1N4735A_S00Z are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic requires exact matching of the following parameters:

Zener voltage: 6.2 V nominal
Tolerance: ±5%
Maximum power rating: 1 W
Maximum impedance: 2 Ohms
Reverse leakage current: 10 µA @ 3 V
Operating temperature range: -65°C to 200°C
Mounting configuration: Through Hole
Package designation: DO-41 (DO-204AL, Axial)

All identified substitutes meet these criteria and are available from active manufacturers, providing viable alternatives to the obsolete onsemi part number.

Parameter Comparison

Parameter	1N4735A_S00Z (onsemi)	1N4735A (Lumimax)	1N4735A BK PBFREE (Central Semiconductor)
Voltage - Zener (Nom)	6.2 V	6.2 V	6.2 V
Tolerance	±5%	±5%	±5%
Power - Max	1 W	1 W	1 W
Impedance (Max)	2 Ohms	2 Ohms	2 Ohms
Current - Reverse Leakage @ Vr	10 µA @ 3 V	10 µA @ 3 V	10 µA @ 3 V
Operating Temperature	-65°C ~ 200°C	-65°C ~ 200°C	-65°C ~ 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
Product Status	Obsolete	Active	Active
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
ECCN	EAR99	EAR99	EAR99

Engineering Selection Recommendations

Both substitute parts provide direct parametric equivalence to the 1N4735A_S00Z and are sourced from active manufacturers with current production status.

1N4735A (Lumimax Optoelectronic Technology) is available in high inventory volume (24,200 pcs) with RoHS Compliant certification and REACH Unaffected status. This part is supplied in DO-41G package configuration.

1N4735A BK PBFREE (Central Semiconductor Corp) is available with 1,084 pcs in stock, ROHS3 Compliant certification, and REACH Unaffected status. This part is supplied in standard DO-41 package configuration with box packaging.

Both substitutes maintain identical electrical performance specifications and thermal operating ranges. Selection between these alternatives depends on procurement availability, inventory requirements, and specific packaging preferences for the application.

Frequently Asked Questions (FAQ)

Q: Can the 1N4735A from Lumimax directly replace the obsolete 1N4735A_S00Z from onsemi?

A: Yes. Both parts share identical electrical specifications including 6.2 V nominal zener voltage, 1 W power rating, ±5% tolerance, 2 Ohms maximum impedance, and -65°C to 200°C operating temperature range. The through-hole DO-41 package configuration is mechanically compatible.

Q: What is the difference between the 1N4735A BK PBFREE and the standard 1N4735A?

A: The 1N4735A BK PBFREE designation indicates lead-free (PBFREE) construction and ROHS3 compliance. Electrically and mechanically, both parts are equivalent. The selection depends on regulatory requirements and application specifications.

Q: Are there any compliance differences between the substitute parts?

A: The 1N4735A from Lumimax carries RoHS Compliant certification, while the 1N4735A BK PBFREE from Central Semiconductor carries ROHS3 Compliant certification. Both are REACH Unaffected and classified as EAR99 for export control purposes.

Q: Does the DO-41G package differ from the standard DO-41 package?

A: The DO-41G designation indicates a specific supplier package variant. Both DO-41G and DO-41 are axial through-hole configurations within the DO-204AL family and are mechanically compatible for board-level installation.

Q: What inventory considerations should guide part selection?

A: The Lumimax 1N4735A offers significantly higher inventory availability (24,200 pcs) compared to the Central Semiconductor 1N4735A BK PBFREE (1,084 pcs). For high-volume production requirements, the Lumimax option provides superior supply chain continuity.

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