VS-2EMH02HM3/5AT Equivalent & Substitute Parts

Part Overview

The VS-2EMH02HM3/5AT is a general-purpose fast recovery rectifier diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount diode operates at 200 V DC reverse voltage with 2 A average rectified current and is housed in a DO-214AC (SMA) package. The device is classified as Active product status and carries automotive-grade qualification under AEC-Q101 standard. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility.

Substiute Parts

VS-2EMH02HM3/5AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 6725VS-2EMH02HM3/5AT Datasheet

Current PartRFQ

VS-2EMH02HM3/5AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 6725VS-2EMH02HM3/5AT Datasheet

Parametric EquivalentRFQ

MER2DMA-AU_R2_006A1

Panjit International Inc.In Stock: 15701MER2DMA-AU_R2_006A1 Datasheet

Parametric EquivalentRFQ

MER2DMA_R2_00601

Panjit International Inc.In Stock: 31040MER2DMA_R2_00601 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VS-2EMH02HM3/5AT are identified based on strict parametric equivalence across the following critical electrical and mechanical criteria:

Electrical Parameters (Must Match):

• Voltage - DC Reverse (Vr) (Max): 200 V
• Current - Average Rectified (Io): 2 A
• Voltage - Forward (Vf) (Max) @ If: 950 mV @ 2 A
• Speed Classification: Fast Recovery ≤ 500ns, > 200mA (Io)
• Operating Temperature - Junction: -55°C to 175°C

Mechanical Parameters (Must Match):

• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount

Compliance Parameters (Must Match):

• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 1 (Unlimited)

Substitute parts identified are MER2DMA-AU_R2_006A1 and MER2DMA_R2_00601, both manufactured by Panjit International Inc. These parts satisfy all mandatory electrical, mechanical, and compliance requirements. Minor variations in reverse recovery time (35 ns versus 25 ns) and reverse leakage current (1 µA versus 2 µA) remain within acceptable engineering tolerances for general-purpose rectification applications.

Parameter Comparison

Engineering Selection Recommendations

All three diodes listed—VS-2EMH02HM3/5AT, MER2DMA-AU_R2_006A1, and MER2DMA_R2_00601—are Active product status devices with full automotive-grade qualification under AEC-Q101 standard. All parts are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, indicating equivalent environmental and regulatory compliance.

The primary distinction between the main part and substitute parts lies in reverse recovery time and reverse leakage current specifications. The VS-2EMH02HM3/5AT exhibits 25 ns reverse recovery time and 2 µA reverse leakage current. The Panjit equivalents (MER2DMA-AU_R2_006A1 and MER2DMA_R2_00601) specify 35 ns reverse recovery time and 1 µA reverse leakage current. These differences remain within acceptable tolerances for general-purpose rectification circuits operating at 200 V and 2 A ratings.

MER2DMA_R2_00601 provides additional capacitance specification (25 pF @ 4V, 1MHz), which may be beneficial for applications requiring precise high-frequency characterization. Selection between substitute parts should be based on inventory availability and application-specific requirements for reverse recovery performance.

Frequently Asked Questions (FAQ)

Q: Can MER2DMA-AU_R2_006A1 or MER2DMA_R2_00601 be used as direct replacements for VS-2EMH02HM3/5AT in automotive applications?

A: Yes. Both Panjit parts meet the mandatory electrical parameters (200 V reverse voltage, 2 A average rectified current, 950 mV forward voltage), mechanical specifications (DO-214AC SMA package, surface mount), and automotive compliance requirements (AEC-Q101 qualification, automotive grade). All three devices operate across the identical temperature range (-55°C to 175°C).

Q: What is the significance of the 10 ns difference in reverse recovery time between VS-2EMH02HM3/5AT (25 ns) and the Panjit substitutes (35 ns)?

A: Reverse recovery time affects switching speed and switching losses in rectification circuits. The 10 ns difference represents a 40% increase in recovery time for the Panjit parts. For general-purpose rectification at 2 A and 200 V, this difference is typically acceptable. Applications requiring minimal switching losses or operating at high switching frequencies should evaluate circuit performance with the longer recovery time specification.

Q: Are there any package or mounting differences between these three diodes?

A: No. All three devices use identical DO-214AC (SMA) surface mount packages and are supplied in Tape & Reel (TR) format. PCB footprints, reflow soldering profiles, and automated assembly processes are fully compatible across all three parts.

Q: What does AEC-Q101 qualification mean for these diodes?

A: AEC-Q101 is the Automotive Electronics Council qualification standard for discrete semiconductors. All three diodes meet this qualification, confirming compliance with automotive reliability, quality, and environmental stress testing requirements. This qualification is mandatory for automotive-grade applications.

Q: Why does MER2DMA_R2_00601 specify capacitance while the other parts do not?

A: Capacitance specification (25 pF @ 4V, 1MHz) is provided for MER2DMA_R2_00601 but not explicitly stated for the other parts. This additional parameter may be useful for high-frequency circuit analysis or EMI/RFI considerations. The absence of stated capacitance for VS-2EMH02HM3/5AT and MER2DMA-AU_R2_006A1 does not indicate incompatibility; it reflects different levels of datasheet detail provided by each manufacturer.

Q: What is the difference between reverse leakage current specifications (2 µA for Vishay versus 1 µA for Panjit)?

A: Reverse leakage current represents the small current flowing through the diode in reverse bias condition. The Panjit parts exhibit lower leakage (1 µA) compared to the Vishay part (2 µA) at 200 V reverse voltage. Lower leakage current can reduce power dissipation in standby or reverse bias conditions. Both values are acceptable for general-purpose rectification applications.

Q: Can these diodes be used interchangeably in existing designs without circuit modification?

A: Yes, for general-purpose rectification applications. All three parts share identical voltage ratings, current ratings, forward voltage characteristics, and package specifications. No PCB layout changes or circuit modifications are required. However, applications with specific requirements for reverse recovery time or reverse leakage current should be evaluated individually.

Q: What inventory considerations should guide part selection?

A: MER2DMA_R2_00601 offers the highest inventory availability (30,971 pcs), followed by MER2DMA-AU_R2_006A1 (15,644 pcs) and VS-2EMH02HM3/5AT (6,639 pcs). For high-volume production or long-term supply assurance, the Panjit parts provide superior availability. For applications requiring the specific performance characteristics of the Vishay FRED Pt® series, the main part remains the preferred choice.