EM1Z Equivalent & Substitute Parts Reference

Part Overview

The Sanken Electric USA Inc. EM1Z is a general-purpose diode rated for 200 V reverse voltage and 1A average rectified current, delivered in an axial through-hole package. It is classified within the Diodes, Rectifiers category. The product is currently active, RoHS compliant, and suitable for industrial, commercial, or consumer general rectification applications. In design and repair scenarios, sourcing alternative models becomes necessary if EM1Z supply is exhausted, if inventory requirements demand a second source, or if comparable substitutes can fulfill identical electrical and mechanical roles.

Key Parameters

Parameter	EM1Z Value
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io)	1A
Voltage - Forward (Vf) (Max) @ If	970 mV @ 1 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
Moisture Sensitivity Level (MSL)	1 (Unlimited)
ECCN	EAR99

Substitute Part Grouping Explanation

The substitutes for the Sanken EM1Z are grouped strictly on identical or allowed electrical and mechanical parameters for diodes and rectifiers. Key matching criteria are maximum reverse voltage rating (200 V), average rectified current rating (1A or greater), standard recovery speed, axial through-hole package form factor, and equivalent mounting style. Only parts with these matching or exceeding electrical ratings and compatible physical packages are considered legitimate substitutes.

Parameter Comparison

Parameter	EM1Z	1N3611	1N5614	1N5615
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	200 V	200 V	200 V	200 V
Current - Average Rectified (Io)	1A	1A	1A	2A
Voltage - Forward (Vf) (Max) @ If	970 mV @ 1 A	1.1 V @ 1 A	1.3 V @ 3 A	1.2 V @ 1 A
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Fast Recovery ≤500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	10 µA @ 200 V	1 µA @ 200 V	500 nA @ 200 V	500 nA @ 200 V
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Axial	A, Axial	A, Axial	Axial
Operating Temperature - Junction	-40°C ~ 150°C	-65°C ~ 175°C	-65°C ~ 200°C	-65°C ~ 175°C
RoHS Status	RoHS Compliant	RoHS non-compliant	RoHS non-compliant	-
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not Applicable
ECCN	EAR99	EAR99	EAR99	EAR99

Engineering Selection Recommendations

When selecting a substitute for the Sanken EM1Z, RoHS status should be considered if compliance is required; the EM1Z is RoHS compliant, while 1N3611 and 1N5614 are not. The product status of the listed substitutes is active, except for 1N5615, which is labeled as discontinued. All listed parts maintain the required ECCN EAR99 status and meet the specified Moisture Sensitivity Level for unlimited floor life. Selection can be based on matching compliance, product status, and availability according to the specified application requirements.

Frequently Asked Questions (FAQ)

Q1: What electrical parameters must match for substitute diodes in the same category?
A1: Key parameters include maximum reverse voltage rating (Vr), average rectified current (Io), recovery speed, forward voltage at rated current (Vf @ If), and reverse leakage current at maximum Vr.

Q2: Are package and mounting style relevant in selecting substitutes?
A2: Yes, the mounting type and package/case (Axial, Through Hole) must be compatible with the intended circuit board or mechanical assembly.

Q3: How does RoHS status affect substitute selection?
A3: RoHS status determines compliance with environmental directives. Selection must consider the application’s compliance requirements; only RoHS compliant diodes should be used in compliant designs.

Q4: Can higher-rated substitutes (for current or voltage) be used?
A4: Substitutes with equal or higher voltage and current ratings provided in the input parameters are included as valid alternatives in this list.

Q5: Is operating temperature range important in substitution?
A5: The operating temperature range of the substitute must include or exceed the original part’s specified range to ensure reliable operation.

Q6: Do all recommended substitutes have identical electrical parameters?
A6: Substitutes meet or exceed the key parameters specified but may differ in forward voltage, leakage current, recovery speed, or extended temperature ranges within allowed values for the product category.

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