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HS1A M2G Equivalent & Substitute Parts
Part Overview
The HS1A M2G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 50 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (SMA) package. This part is discontinued at DiGi Electronics, necessitating identification of equivalent and substitute components for ongoing design requirements and production needs. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts offer compatible performance within the same application category with minor parameter variations.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - DC Reverse (Vr) (Max) | 50 | V |
| Current - Average Rectified (Io) | 1 | A |
| Voltage - Forward (Vf) (Max) @ If | 1 V @ 1 A | V @ A |
| Speed | Fast Recovery ≤ 500ns, > 200mA (Io) | — |
| Reverse Recovery Time (trr) | 50 | ns |
| Current - Reverse Leakage @ Vr | 5 µA @ 50 V | µA @ V |
| Capacitance @ Vr, F | 20 | pF @ 4V, 1MHz |
| Package / Case | DO-214AC, SMA | — |
| Operating Temperature - Junction | -55 to 150 | °C |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution of the HS1A M2G is determined by strict adherence to the following critical parameters:
Primary Substitution Criteria:
- Voltage - DC Reverse (Vr) (Max): 50 V
- Current - Average Rectified (Io): 1 A
- Package / Case: DO-214AC, SMA (surface mount)
- Mounting Type: Surface Mount
- RoHS Status: ROHS3 Compliant
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
Secondary Compatibility Parameters:
- Voltage - Forward (Vf) (Max) @ If: 1 V @ 1 A or lower
- Speed: Fast Recovery ≤ 500ns, > 200mA (Io) or equivalent
- Reverse Recovery Time (trr): 50 ns or lower
- Current - Reverse Leakage @ Vr: 5 µA @ 50 V or lower
- Operating Temperature - Junction: -55°C minimum to 150°C minimum
Parts are grouped into three categories:
Parametric Equivalents: Parts with identical electrical specifications and package designation from Taiwan Semiconductor Corporation (HS1A, US1A, US1AH).
Direct Manufacturer Equivalents: Parts from alternative manufacturers (Diodes Incorporated, Vishay General Semiconductor - Diodes Division, Comchip Technology) meeting all primary criteria with minor variations in secondary parameters.
Similar Parts: Components with compatible primary specifications but variations in forward voltage, recovery time, or capacitance that remain suitable for general-purpose rectification applications.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Vr (Max) [V] | Io [A] | Vf (Max) @ If [V @ A] | Speed | trr [ns] | Ir @ Vr [µA @ V] | C @ Vr [pF @ 4V, 1MHz] | Tj (°C) | Product Status |
|---|---|---|---|---|---|---|---|---|---|---|
| HS1A M2G | Taiwan Semiconductor Corporation | 50 | 1 | 1 @ 1 | Fast Recovery ≤ 500ns, > 200mA | 50 | 5 @ 50 | 20 | -55 to 150 | Discontinued |
| HS1A | Taiwan Semiconductor Corporation | 50 | 1 | 1 @ 1 | Fast Recovery ≤ 500ns, > 200mA | 50 | 5 @ 50 | 20 | -55 to 150 | Active |
| US1A | Taiwan Semiconductor Corporation | 50 | 1 | 1 @ 1 | Fast Recovery ≤ 500ns, > 200mA | 50 | 5 @ 50 | 15 | -55 to 150 | Active |
| US1AH | Taiwan Semiconductor Corporation | 50 | 1 | 1 @ 1 | Fast Recovery ≤ 500ns, > 200mA | 50 | 5 @ 50 | 15 | -55 to 150 | Active |
| US1A-13-F | Diodes Incorporated | 50 | 1 | 1 @ 1 | Fast Recovery ≤ 500ns, > 200mA | 50 | 5 @ 50 | 20 | -65 to 150 | Active |
| CGRA4001-G | Comchip Technology | 50 | 1 | 1.1 @ 1 | Standard Recovery > 500ns, > 200mA | — | 5 @ 50 | — | -55 to 150 | Active |
| ES1A-13-F | Diodes Incorporated | 50 | 1 | 0.92 @ 1 | Fast Recovery ≤ 500ns, > 200mA | 25 | 5 @ 50 | 10 | -55 to 150 | Active |
| ES1A-E3/5AT | Vishay General Semiconductor - Diodes Division | 50 | 1 | 0.92 @ 1 | Fast Recovery ≤ 500ns, > 200mA | 25 | 5 @ 50 | 10 | -55 to 155 | Active |
| ES1A-M3/5AT | Vishay General Semiconductor - Diodes Division | 50 | 1 | 0.92 @ 1 | Fast Recovery ≤ 500ns, > 200mA | 25 | 5 @ 50 | 10 | -55 to 150 | Active |
| ES1A-M3/61T | Vishay General Semiconductor - Diodes Division | 50 | 1 | 0.92 @ 1 | Fast Recovery ≤ 500ns, > 200mA | 25 | 5 @ 50 | 10 | -55 to 150 | Active |
| ES1AHE3_A/H | Vishay General Semiconductor - Diodes Division | 50 | 1 | 0.92 @ 1 | Fast Recovery ≤ 500ns, > 200mA | 25 | 5 @ 50 | 10 | -55 to 150 | Active |
Engineering Selection Recommendations
Parametric Equivalents (Recommended Primary Substitutes):
The HS1A, US1A, and US1AH from Taiwan Semiconductor Corporation are parametric equivalents with active product status. The HS1A maintains identical specifications to the discontinued HS1A M2G and is currently in active production with 670 pieces in stock. The US1A variant offers the same electrical performance with slightly reduced capacitance (15 pF versus 20 pF) and maintains active status with 17,187 pieces available. The US1AH variant includes AEC-Q101 automotive qualification and is suitable for applications requiring automotive-grade components.
Direct Manufacturer Equivalents (Secondary Substitutes):
The US1A-13-F from Diodes Incorporated provides identical electrical specifications with extended operating temperature range (-65°C to 150°C) and is available in high volume (25,300 pieces). This part is suitable for applications requiring broader temperature performance.
Similar Parts (Tertiary Substitutes):
The ES1A-13-F, ES1A-E3/5AT, ES1A-M3/5AT, ES1A-M3/61T, and ES1AHE3_A/H from Vishay General Semiconductor - Diodes Division and Diodes Incorporated offer improved performance characteristics with lower forward voltage (0.92 V versus 1 V), faster reverse recovery time (25 ns versus 50 ns), and reduced capacitance (10 pF versus 20 pF). These parts are suitable for applications where improved switching performance and reduced power dissipation are beneficial. The ES1AHE3_A/H includes AEC-Q101 automotive qualification.
The CGRA4001-G from Comchip Technology meets primary voltage and current specifications but features standard recovery speed (>500 ns) and higher forward voltage (1.1 V), making it suitable only for non-critical general-purpose rectification applications where switching speed is not a limiting factor.
All recommended substitutes maintain ROHS3 compliance, MSL 1 (Unlimited) moisture sensitivity rating, and surface mount DO-214AC (SMA) package compatibility.
Frequently Asked Questions (FAQ)
Q: Can the HS1A M2G be directly replaced with the HS1A?
A: Yes. The HS1A is a parametric equivalent with identical electrical specifications (50 V, 1 A, 1 V forward voltage, 50 ns recovery time) and package designation (DO-214AC, SMA). The primary difference is product status: HS1A M2G is discontinued while HS1A is active in production.
Q: What is the difference between US1A and US1AH?
A: Both parts share identical electrical specifications and operating temperature range (-55°C to 150°C). The US1AH includes AEC-Q101 automotive qualification and is designated as an automotive-grade component. Selection depends on application requirements for automotive certification.
Q: Are ES1A series parts direct replacements for HS1A M2G?
A: ES1A series parts (ES1A-13-F, ES1A-E3/5AT, ES1A-M3/5AT, ES1A-M3/61T, ES1AHE3_A/H) are compatible substitutes with the same 50 V, 1 A ratings and DO-214AC package. However, they feature improved performance: lower forward voltage (0.92 V versus 1 V), faster reverse recovery time (25 ns versus 50 ns), and lower capacitance (10 pF versus 20 pF). These differences make ES1A parts suitable for applications where switching performance is critical.
Q: What is the significance of the DO-214AC (SMA) package designation?
A: DO-214AC and SMA are equivalent designations for the same surface mount package. All listed substitute parts use this identical package, ensuring mechanical and electrical compatibility without PCB redesign.
Q: Can CGRA4001-G be used as a substitute for HS1A M2G?
A: CGRA4001-G meets the primary voltage (50 V) and current (1 A) specifications and uses the same DO-214AC package. However, it features standard recovery speed (>500 ns) versus fast recovery (≤500 ns) and higher forward voltage (1.1 V versus 1 V). This part is suitable only for general-purpose rectification applications where switching speed is not a design constraint.
Q: What packaging options are available for substitute parts?
A: Substitute parts are available in multiple packaging formats: Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and standard packaging. Selection depends on production volume and assembly requirements. All parts maintain the same DO-214AC (SMA) component package.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the compliance profile of the HS1A M2G.
Q: Which substitute offers the best performance improvement?
A: ES1A series parts offer the most significant performance improvements: 80 mV lower forward voltage (0.92 V versus 1 V), 50% faster reverse recovery time (25 ns versus 50 ns), and 50% lower capacitance (10 pF versus 20 pF). These improvements reduce power dissipation and enable faster switching applications.
Q: Is automotive qualification available in substitute parts?
A: Yes. US1AH and ES1AHE3_A/H include AEC-Q101 automotive qualification. These parts are suitable for automotive applications requiring qualified components.
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