1N5550C.TR Equivalent & Substitute Parts

Part Overview

The 1N5550C.TR is a general-purpose rectifier diode manufactured by Semtech Corporation, rated for 200 V DC reverse voltage and 5 A average rectified current in an axial through-hole package. This part is discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives for ongoing design and procurement requirements. Substitute parts must maintain compatibility with existing circuit designs while meeting the electrical and mechanical specifications of the original component.

Key Parameters

Parameter	1N5550C.TR
Voltage - DC Reverse (Vr) (Max)	200 V
Current - Average Rectified (Io)	5 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 3 A
Reverse Recovery Time (trr)	2 µs
Current - Reverse Leakage @ Vr	1 µA @ 200 V
Mounting Type	Through Hole
Package / Case	Axial
Technology	Standard
Product Status	Discontinued at DiGi Electronics

Substitute Part Grouping Explanation

Substitute parts for the 1N5550C.TR are evaluated based on the following critical parameters: voltage rating (Vr), current capacity (Io), forward voltage characteristics (Vf), reverse recovery time (trr), reverse leakage current, mounting type, and package configuration. All substitute candidates must maintain through-hole axial packaging and standard recovery speed characteristics (>500 ns, >200 mA).

The identified substitute parts—EM 1AV1 and EM01ZV1 from Sanken Electric USA Inc.—differ from the main part in current rating and voltage rating specifications. These differences establish distinct substitution scenarios based on circuit requirements:

EM 1AV1: 600 V, 1 A rating EM01ZV1: 200 V, 1 A rating

Substitution validity depends on whether the application circuit can operate with reduced current capacity and, in the case of EM 1AV1, elevated voltage rating.

Parameter Comparison

Parameter	1N5550C.TR	EM 1AV1	EM01ZV1
Manufacturer	Semtech Corporation	Sanken Electric USA Inc.	Sanken Electric USA Inc.
Voltage - DC Reverse (Vr) (Max)	200 V	600 V	200 V
Current - Average Rectified (Io)	5 A	1 A	1 A
Voltage - Forward (Vf) (Max) @ If	1 V @ 3 A	970 mV @ 1 A	970 mV @ 1 A
Speed	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)	Standard Recovery >500ns, > 200mA (Io)
Current - Reverse Leakage @ Vr	1 µA @ 200 V	10 µA @ 600 V	10 µA @ 200 V
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Axial	Axial	Axial
Technology	Standard	Standard	Standard
Product Status	Discontinued at DiGi Electronics	Active	Active
RoHS Status	Not specified	RoHS Compliant	RoHS Compliant
Operating Temperature - Junction	Not specified	-40°C ~ 150°C	-40°C ~ 150°C

Engineering Selection Recommendations

EM01ZV1 is the primary substitute candidate for the 1N5550C.TR. This part maintains the 200 V voltage rating of the original component and is currently in active production status with RoHS compliance certification. The EM01ZV1 is suitable for applications where the circuit current requirement does not exceed 1 A average rectified current.

EM 1AV1 is a secondary substitute option applicable only to circuits where the 200 V voltage specification is not a hard constraint and the application can tolerate a 600 V rated component. This part is also active and RoHS compliant. The EM 1AV1 is suitable for applications requiring voltage margin above 200 V, provided the circuit current requirement does not exceed 1 A.

Both substitute parts are manufactured by Sanken Electric USA Inc., an active supplier with current inventory availability. Selection between EM01ZV1 and EM 1AV1 depends on circuit voltage and current requirements relative to the original 1N5550C.TR specifications.

Frequently Asked Questions (FAQ)

Q: Can EM01ZV1 directly replace 1N5550C.TR in all applications?

A: EM01ZV1 is a direct substitute only for applications where the average rectified current requirement does not exceed 1 A. The 1N5550C.TR is rated for 5 A, while EM01ZV1 is rated for 1 A. Both parts share the 200 V voltage rating and axial through-hole package configuration. Circuit redesign or current limiting may be required if the original design draws more than 1 A.

Q: What is the difference between EM 1AV1 and EM01ZV1?

A: EM 1AV1 is rated for 600 V reverse voltage and 1 A current. EM01ZV1 is rated for 200 V reverse voltage and 1 A current. Both parts use standard recovery technology and axial through-hole packaging. EM01ZV1 matches the 200 V specification of the original 1N5550C.TR, while EM 1AV1 provides higher voltage rating at the cost of reduced current capacity.

Q: Are the substitute parts RoHS compliant?

A: Both EM 1AV1 and EM01ZV1 are RoHS compliant. The original 1N5550C.TR RoHS status is not specified in the available documentation.

Q: What is the reverse leakage current difference between the main part and substitutes?

A: The 1N5550C.TR exhibits 1 µA reverse leakage at 200 V. EM01ZV1 exhibits 10 µA reverse leakage at 200 V. EM 1AV1 exhibits 10 µA reverse leakage at 600 V. Applications sensitive to leakage current performance should account for this tenfold increase in the substitute parts.

Q: Can the substitute parts handle the same forward voltage drop?

A: The 1N5550C.TR forward voltage is specified as 1 V at 3 A. Both substitute parts specify 970 mV at 1 A. Direct comparison is not applicable due to different current ratings. At the 1 A operating point of the substitute parts, forward voltage characteristics differ from the original part's 3 A specification.

Q: Are the substitute parts available in the same packaging?

A: Yes. All three parts—1N5550C.TR, EM 1AV1, and EM01ZV1—use axial through-hole packaging and are mechanically compatible for board-level installation.

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