RU 2AM Equivalent & Substitute Parts Reference

Part Overview

The Sanken Electric USA Inc. RU 2AM is a through-hole, axial-lead, standard technology diode rated for 600 V reverse voltage and 1.1 A average rectified current with fast recovery (400 ns trr). This part is classified as obsolete and no longer in active production. Identifying alternative or equivalent models is necessary for ongoing designs, repairs, and inventory support where RU 2AM is specified.

Key Parameters

Parameter	RU 2AM Value
Category	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	600 V
Current - Average Rectified (Io)	1.1A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1.1 A
Speed / Reverse Recovery Time (trr)	Fast Recovery =< 500 ns, 400 ns
Current - Reverse Leakage @ Vr	10 µA @ 600 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)

Substitute Part Grouping Explanation

Substitute parts are identified strictly by matching or exceeding the following key parameters:

Voltage - DC Reverse (Vr) (Max)
Current - Average Rectified (Io)
Voltage - Forward (Vf) (Max) @ If
Reverse Recovery Time (trr) and diode Speed category
Mounting Type and Package / Case
RoHS compliance and MSL No substitution is made unless all above parameters are satisfied by the alternative part.

Parameter Comparison

Parameter	RU 2AM	1N5397-E3/54	1N6622	GP15J-E3/54	GP15J-E3/73	RGP15J-E3/73
Category	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers	Diodes, Rectifiers
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	1.1A	1.5A	1.2A	1.5A	1.5A	1.5A
Voltage - Forward (Vf) (Max) @ If	1.2 V @ 1.1 A	1.4 V @ 1.5 A	1.4 V @ 1.2 A	1.1 V @ 1.5 A	1.1 V @ 1.5 A	1.3 V @ 1.5 A
Speed / Reverse Recovery Time (trr)	Fast Recovery =< 500 ns, 400 ns	Standard Recovery >500 ns, 2 µs	Fast Recovery =< 500 ns, 45 ns	Standard Recovery >500 ns, 3.5 µs	Standard Recovery >500 ns, 3.5 µs	Fast Recovery =< 500 ns, 250 ns
Current - Reverse Leakage @ Vr	10 µA @ 600 V	5 µA @ 600 V	500 nA @ 600 V	5 µA @ 600 V	5 µA @ 600 V	5 µA @ 600 V
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Axial	DO-204AL, DO-41, Axial	A, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial	DO-204AC, DO-15, Axial
Operating Temperature - Junction	-40°C ~ 150°C	-50°C ~ 150°C	-65°C ~ 150°C	-65°C ~ 175°C	-65°C ~ 175°C	-65°C ~ 175°C
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

Substitute parts 1N5397-E3/54, 1N6622, GP15J-E3/54, GP15J-E3/73, and RGP15J-E3/73 maintain RoHS compliance and MSL 1 (Unlimited), consistent with RU 2AM. Only active status substitutes should be considered for production; obsolete or inactive parts do not meet long-term sourcing requirements based on provided status.

Frequently Asked Questions (FAQ)

Q1: What diode parameters must match for substitution?
A: Key parameters for substitution include reverse voltage, average rectified current, forward voltage, reverse recovery time or speed, mounting type, package/case, RoHS status, and moisture sensitivity level.

Q2: How is package compatibility determined?
A: Only through-hole, axial configurations in compatible package formats (e.g., DO-204AL, DO-41, DO-15, A) are included.

Q3: Are RoHS and moisture sensitivity requirements addressed?
A: All listed substitutes meet RoHS compliance and MSL 1 (Unlimited) to match the original RU 2AM specification.

Q4: Is reverse recovery speed important?
A: Yes, substitutes are grouped according to fast or standard recovery as stated, matching the original’s fast recovery classification when specified.

Q5: Does a higher current rating in a substitute matter?
A: Substitutes may have an equal or higher average rectified current, ensuring compatibility for designs requiring at least 1.1A.

Q6: Can these substitutes be used interchangeably in all applications?
A: Substitution is based strictly on the matching electrical and mechanical parameters detailed above. Package and performance equivalence are confirmed strictly per provided data.

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