EM1C Equivalent & Substitute Parts Reference

Part Overview

The EM1C (Sanken Electric USA Inc.) is a general-purpose diode classified under diodes, rectifiers, with a maximum DC reverse voltage rating of 1000 V and an average rectified current rating of 1 A in an axial (through hole) package. Its standard recovery speed and RoHS compliance support general power rectification tasks. When sourcing or manufacturing constraints arise, identifying alternative models with matching key parameters becomes critical for maintaining design reliability, regulatory compliance, and inventory efficiency.

Key Parameters

Parameter	EM1C Value	Notes
Manufacturer Part Number	EM1C	Main Reference
Category	Diodes, Rectifiers	Functional Type
Voltage - DC Reverse (Vr) (Max)	1000 V	Maximum Reverse Voltage
Current - Average Rectified (Io)	1 A	Average Forward Current
Voltage - Forward (Vf) (Max) @ If	1.05 V @ 1 A	Maximum Forward Voltage at Rated Current
Speed	Standard Recovery >500ns, >200mA (Io)	Recovery Classification
Current - Reverse Leakage @ Vr	20 µA @ 1000 V	Maximum Leakage Current
Mounting Type	Through Hole	Mechanical Form Factor
Package / Case	Axial	Package Style
Operating Temperature - Junction	-40°C ~ 150°C	Minimum/Maximum Junction Temperature
RoHS Status	RoHS Compliant	Environmental Certification
Moisture Sensitivity Level (MSL)	1 (Unlimited)	MSL Classification
Product Status	Active	Production/Obsolescence Status

Substitute Part Grouping Explanation

Substitution is strictly based on matching critical parameters: voltage rating (DC reverse), average rectified current, package type, mounting method, recovery classification, operating temperature, environmental compliance, and product status as presented. All substitutes are general-purpose diodes, rectifiers meeting or exceeding 1000 V Vr(max), 1 A Io, through-hole axial packages, standard or compatible recovery speeds, and certified RoHS status. Only those meeting product status requirements and certifications are selected.

Key substitution parameters applied:

Voltage - DC Reverse (Vr) (Max)
Current - Average Rectified (Io)
Voltage - Forward (Vf) (Max) @ If
Speed
Current - Reverse Leakage @ Vr
Mounting Type / Package / Case
Operating Temperature - Junction
RoHS Status
Product Status

Parameter Comparison

Manufacturer Part Number	Voltage - DC Reverse (Vr) (Max)	Current - Average Rectified (Io)	Voltage - Forward (Vf) (Max) @ If	Speed	Current - Reverse Leakage @ Vr	Mounting Type	Package / Case	Operating Temperature - Junction	RoHS Status	Product Status
EM1C	1000 V	1 A	1.05 V @ 1 A	Standard Recovery >500ns, >200mA (Io)	20 µA @ 1000 V	Through Hole	Axial	-40°C ~ 150°C	RoHS Compliant	Active
1N4007-E3/53	1000 V	1 A	1.1 V @ 1 A	Standard Recovery >500ns, >200mA (Io)	5 µA @ 1000 V	Through Hole	Axial (DO-204AL, DO-41)	-50°C ~ 150°C	ROHS3 Compliant	Active
1N4007-T	1000 V	1 A	1 V @ 1 A	Standard Recovery >500ns, >200mA (Io)	5 µA @ 1000 V	Through Hole	Axial (DO-204AL, DO-41)	-65°C ~ 150°C	ROHS3 Compliant	Last Time Buy
1N4007-TP	1000 V	1 A	1.1 V @ 1 A	Standard Recovery >500ns, >200mA (Io)	5 µA @ 1000 V	Through Hole	Axial (DO-204AL, DO-41)	-55°C ~ 150°C	ROHS3 Compliant	Active
RGP10M-E3/54	1000 V	1 A	1.3 V @ 1 A	Fast Recovery =< 500ns, >200mA (Io)	5 µA @ 1000 V	Through Hole	Axial (DO-204AL, DO-41)	-65°C ~ 175°C	ROHS3 Compliant	Active
BYT54M-TAP	1000 V	1.25 A	1.5 V @ 1 A	Fast Recovery =< 500ns, >200mA (Io)	5 µA @ 1000 V	Through Hole	SOD-57, Axial	-55°C ~ 175°C	ROHS3 Compliant	Active
UF1007-T	1000 V	1 A	1.7 V @ 1 A	Fast Recovery =< 500ns, >200mA (Io)	5 µA @ 1000 V	Through Hole	Axial (DO-204AL, DO-41)	-65°C ~ 150°C	ROHS3 Compliant	Active

Engineering Selection Recommendations

Selection among substitutes should be based on matching product status (Active or Last Time Buy if no Active options remain), verified ROHS compliance, and similar moisture sensitivity level (MSL 1 preferred for unlimited shelf life). Only substitute diodes with identical or better voltage, current, and recovery speed ratings, and through-hole axial packaging, are considered equivalent. Where product status is not "Active," selection should account for lifecycle considerations. Environmental certifications (RoHS, REACH) must be explicitly listed and matched.

Frequently Asked Questions (FAQ)

Q1: What are the core criteria for substituting EM1C with another diode?
Substitution requires the alternate diode to meet or exceed 1000 V DC reverse voltage, 1 A average rectified current, similar or compatible forward voltage rating at 1 A, standard or fast recovery classification, through-hole axial mounting, operating temperature equal to or exceeding -40°C ~ 150°C, and verified RoHS compliance and MSL 1 classification.

Q2: Are package and mounting style critical for EM1C substitution?
Yes. Only through-hole axial package diodes are considered suitable substitutes to match the mechanical and assembly requirements for EM1C.

Q3: How does product status affect substitute selection?
Substitutes should be "Active" to ensure long-term availability. "Last Time Buy" and "Not For New Designs" options are only considered if no other active replacements exist. Always confirm product lifecycle status before mass production.

Q4: Is environmental compliance necessary for equivalency?
RoHS compliance is mandatory for direct substitution, as specified for EM1C. Substitute parts must carry equivalent or better compliance credentials.

Q5: How close must electrical parameters match for substitution?
Voltage, current, and recovery speed must be equal to or exceed those of the EM1C. Minor variations in forward voltage (Vf) and leakage current are permitted within the maximum specified limits.

Q6: Are all listed substitutes direct pin-to-pin compatible for EM1C?
All presented substitutes feature through-hole axial packages compatible with the EM1C form factor. Confirmation of mechanical dimensions is recommended when switching between different package variants (e.g., DO-204AL/DO-41 vs SOD-57). All substitutes maintain functional equivalence per the provided key parameters.

Q7: Can parts with a higher forward voltage (Vf) or faster recovery (Speed) substitute EM1C?
Yes, provided all other key electrical and mechanical parameters are met or exceeded, and the forward voltage does not exceed the application's maximum tolerable loss.

Q8: Can substitutes from different manufacturers be mixed in production?
Mixing substitutes is possible when all specified parameters and package styles are matched. Confirm traceability and certifications for each selected substitute for quality assurance.

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