Equivalent & Substitute Parts for RM 4Z – Sanken Electric USA Inc.

Part Overview

RM 4Z by Sanken Electric USA Inc. is a general-purpose axial diode designed for rectification applications, featuring standard recovery performance at 200V and 3A rating. This part is obsolete, requiring the identification of suitable alternative parts with identical or superior electrical and mechanical characteristics for continued design support, manufacturing, and maintenance activities.

Key Parameters

Parameter	RM 4Z
Manufacturer	Sanken Electric USA Inc.
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io)	3A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A
Speed	Standard Recovery >500ns, >200mA (Io)
Current - Reverse Leakage @ Vr	10 µA @ 200 V
Mounting Type	Through Hole
Package / Case	Axial
Operating Temperature - Junction	-40°C ~ 150°C
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitute component selection for diode RM 4Z is strictly determined by matching the following key parameters: DC reverse voltage rating (Vr), average rectified current (Io), forward voltage (Vf) at rated current, reverse leakage current, mounting type, package/case, and operating temperature range. Substitute parts must ensure electrical and mechanical compatibility within these specified criteria, without deviation or extrapolation.

Parameter Comparison

Parameter	RM 4Z	SF34G A0G
Manufacturer	Sanken Electric USA Inc.	Taiwan Semiconductor Corporation
Category	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	200 V	200 V
Current - Average Rectified (Io)	3A	3A
Voltage - Forward (Vf) (Max) @ If	950 mV @ 3 A	950 mV @ 3 A
Current - Reverse Leakage @ Vr	10 µA @ 200 V	5 µA @ 200 V
Mounting Type	Through Hole	Through Hole
Package / Case	Axial	DO-201AD, Axial
Operating Temperature - Junction	-40°C ~ 150°C	-55°C ~ 150°C
RoHS Status	RoHS Compliant	ROHS3 Compliant

Engineering Selection Recommendations

SF34G A0G by Taiwan Semiconductor Corporation is an appropriate substitute for RM 4Z based on the identical voltage and current ratings, forward voltage, mounting type, and enhanced reverse leakage current specification. Both components comply with RoHS. Product status and certification details indicate availability and compliance suitable for direct replacement, considering the main part RM 4Z is listed as obsolete.

Frequently Asked Questions (FAQ)

Q: Which electrical parameters must be matched when selecting a substitute for RM 4Z?
A: The DC reverse voltage (Vr), average rectified current (Io), forward voltage (Vf) at rated current, and reverse leakage current must match for compatibility.

Q: Does package/case compatibility matter for direct substitution?
A: Yes, matching the axial through-hole package ensures mechanical fit and assembly compatibility.

Q: Are there differences in recovery speed between RM 4Z and SF34G A0G?
A: Based strictly on provided specifications, RM 4Z features standard recovery, while SF34G A0G specifies fast recovery (<500ns).

Q: How is compliance verified for substitute selection?
A: Substitute selection uses only the provided compliance and certification data, such as RoHS status.

Q: Is it necessary to consider operating temperature range?
A: Yes, substitute parts must at least match or exceed the -40°C ~ 150°C operating temperature range of RM 4Z. SF34G A0G operates from -55°C ~ 150°C per provided data.

Q: Can the substitute be used in all assemblies where RM 4Z was originally specified?
A: Substitution is supported when all specified electrical and mechanical parameters are matched, based on the data provided.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message