ER5J Equivalent & Substitute Parts

Part Overview

The ER5J is a general-purpose rectifier diode manufactured by SMC Diode Solutions, rated for 600 V DC reverse voltage and 5 A average rectified current in a surface mount DO-214AB (SMC) package. This component is classified as a fast recovery diode with a reverse recovery time of 35 ns, suitable for standard rectification applications requiring moderate switching speeds. The part is currently active in production with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1).

Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing due to inventory constraints, supply chain considerations, or specific performance trade-offs within the defined electrical and mechanical parameter space.

Key Parameters

Parameter	Value	Unit
Voltage - DC Reverse (Vr) (Max)	600	V
Current - Average Rectified (Io)	5	A
Voltage - Forward (Vf) (Max) @ If	1.7	V @ 5 A
Reverse Recovery Time (trr)	35	ns
Current - Reverse Leakage @ Vr	5	µA @ 600 V
Package / Case	DO-214AB, SMC	—
Mounting Type	Surface Mount	—
Operating Temperature - Junction	-55 to 150	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the ER5J is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

Voltage - DC Reverse (Vr) (Max): 600 V
Current - Average Rectified (Io): 5 A
Package / Case: DO-214AB, SMC
Mounting Type: Surface Mount
Technology: Standard (Fast Recovery)

Acceptable Variation Parameters:

Voltage - Forward (Vf) (Max) @ If: Substitute parts may operate within the range of 1.7 V to 1.95 V at 5 A
Reverse Recovery Time (trr): Substitute parts must maintain fast recovery classification (≤ 500 ns for > 200 mA)
Current - Reverse Leakage @ Vr: Substitute parts may range from 3 µA to 10 µA at 600 V
Operating Temperature - Junction: Substitute parts must support minimum -55°C to 150°C range; extended upper limits are acceptable

Three substitute parts meet these criteria and are listed below.

Parameter Comparison

Parameter	ER5J (SMC)	VS-5ECH06-M3/9AT (Vishay)	HS5J R7G (TSC)	HS5J V7G (TSC)
Manufacturer	SMC Diode Solutions	Vishay General Semiconductor	Taiwan Semiconductor Corporation	Taiwan Semiconductor Corporation
Voltage - DC Reverse (Vr) (Max)	600 V	600 V	600 V	600 V
Current - Average Rectified (Io)	5 A	5 A	5 A	5 A
Voltage - Forward (Vf) (Max) @ If	1.7 V @ 5 A	1.95 V @ 5 A	1.7 V @ 5 A	1.7 V @ 5 A
Reverse Recovery Time (trr)	35 ns	23 ns	75 ns	75 ns
Current - Reverse Leakage @ Vr	5 µA @ 600 V	3 µA @ 600 V	10 µA @ 600 V	10 µA @ 600 V
Capacitance @ Vr, F	58 pF @ 4V, 1MHz	Not specified	50 pF @ 4V, 1MHz	50 pF @ 4V, 1MHz
Package / Case	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC	DO-214AB, SMC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Packaging	Tape & Reel (TR)	Tape & Reel (TR)	Cut Tape (CT)	Cut Tape (CT)
Operating Temperature - Junction	-55 to 150°C	-55 to 175°C	-55 to 150°C	-55 to 150°C
Product Status	Active	Active	Discontinued at DiGi Electronics	Discontinued at DiGi Electronics
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Inventory Status	80,300 Pcs	14,230 Pcs	702 Pcs	822 Pcs

Engineering Selection Recommendations

Primary Substitute: VS-5ECH06-M3/9AT (Vishay General Semiconductor)

The VS-5ECH06-M3/9AT is the preferred substitute for the ER5J. This part maintains full electrical equivalence across all mandatory parameters: 600 V reverse voltage, 5 A average rectified current, and DO-214AB surface mount package. The VS-5ECH06-M3/9AT offers superior reverse recovery time (23 ns versus 35 ns), lower reverse leakage current (3 µA versus 5 µA), and an extended operating temperature range (-55°C to 175°C). Both parts are active in production, RoHS3 compliant, and available in Tape & Reel packaging. The forward voltage specification of 1.95 V at 5 A is within acceptable variation for general-purpose rectification applications.

Secondary Substitutes: HS5J R7G and HS5J V7G (Taiwan Semiconductor Corporation)

The HS5J R7G and HS5J V7G are parametric equivalents that meet all mandatory electrical specifications. Both parts share identical electrical characteristics: 600 V reverse voltage, 5 A current rating, 1.7 V forward voltage at 5 A, and DO-214AB package. However, both parts are discontinued at DiGi Electronics and available only in Cut Tape packaging rather than Tape & Reel. The reverse recovery time of 75 ns is longer than the primary part, and reverse leakage current is elevated at 10 µA. These parts are suitable for applications where inventory availability is not constrained and packaging format is not a limiting factor.

Compliance and Certification:

All substitute parts maintain RoHS3 compliance and MSL 1 (unlimited moisture sensitivity). The ER5J and VS-5ECH06-M3/9AT are both REACH Affected or Unaffected respectively; this distinction does not affect functional substitution. All parts carry EAR99 export classification and identical HTSUS commodity codes.

Frequently Asked Questions (FAQ)

Q: Can the VS-5ECH06-M3/9AT be used as a direct replacement for the ER5J in all applications?

A: Yes. The VS-5ECH06-M3/9AT meets all mandatory electrical and mechanical parameters for the ER5J. The forward voltage difference (1.95 V versus 1.7 V) is within acceptable tolerance for standard rectification circuits. The superior reverse recovery time and lower leakage current represent performance improvements.

Q: What is the difference between Tape & Reel and Cut Tape packaging?

A: Tape & Reel packaging is supplied on continuous carrier tape wound on a reel, suitable for automated pick-and-place assembly. Cut Tape packaging is supplied as individual segments of carrier tape, typically for lower-volume or manual assembly operations. The ER5J and VS-5ECH06-M3/9AT are supplied in Tape & Reel format; the HS5J variants are supplied in Cut Tape format.

Q: Why are the HS5J R7G and HS5J V7G marked as discontinued?

A: These parts are discontinued at DiGi Electronics, indicating they are no longer actively stocked by this distributor. Inventory remains available from other sources, but future availability is not guaranteed. For new designs or long-term production requirements, the VS-5ECH06-M3/9AT or ER5J are recommended.

Q: Are there any thermal performance differences between the ER5J and its substitutes?

A: The VS-5ECH06-M3/9AT supports an extended junction temperature range of -55°C to 175°C compared to the ER5J at -55°C to 150°C. This provides additional thermal margin in high-temperature applications. The HS5J variants match the ER5J temperature range. All parts are suitable for standard industrial temperature environments.

Q: What does the reverse recovery time specification mean for circuit performance?

A: Reverse recovery time (trr) is the interval required for a diode to transition from forward conduction to reverse blocking when the applied voltage reverses. The ER5J specifies 35 ns, the VS-5ECH06-M3/9AT specifies 23 ns, and the HS5J variants specify 75 ns. Shorter recovery times reduce switching losses and electromagnetic interference in high-frequency rectification circuits. All specified parts are classified as fast recovery diodes (≤ 500 ns) suitable for standard switching applications.

Q: Is the forward voltage difference between parts significant?

A: The forward voltage difference between the ER5J (1.7 V) and VS-5ECH06-M3/9AT (1.95 V) at 5 A represents a 0.25 V variation. In most rectification applications, this difference is negligible and does not require circuit redesign. Power dissipation increases proportionally with forward voltage; applications with strict thermal budgets should account for this difference.

Q: Can I mix different substitute parts in the same production batch?

A: All three substitute parts are electrically equivalent and mechanically compatible. However, mixing parts from different manufacturers in the same assembly may complicate traceability and quality control documentation. Consistent sourcing from a single manufacturer is recommended for production consistency.

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