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HS1G Equivalent & Substitute Parts Reference
Part Overview
The HS1G is a general-purpose rectifier diode manufactured by Taiwan Semiconductor Corporation, rated for 400 V DC reverse voltage and 1 A average rectified current in a surface mount DO-214AC (SMA) package. This fast recovery diode with 50 ns reverse recovery time is designed for standard rectification applications requiring compact form factors and reliable performance across industrial temperature ranges.
The HS1G maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and thermal operating ranges to ensure direct circuit board replacement capability.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - DC Reverse (Vr) Maximum | 400 | V |
| Current - Average Rectified (Io) | 1 | A |
| Voltage - Forward (Vf) Maximum @ If | 1.3 | V @ 1 A |
| Reverse Recovery Time (trr) | 50 | ns |
| Current - Reverse Leakage @ Vr | 5 | µA @ 400 V |
| Speed Classification | Fast Recovery ≤ 500ns, > 200mA | - |
| Package / Case | DO-214AC, SMA | - |
| Mounting Type | Surface Mount | - |
| Operating Temperature - Junction | -55 to 150 | °C |
| RoHS Status | ROHS3 Compliant | - |
| Moisture Sensitivity Level | 1 (Unlimited) | - |
Substitute Part Grouping Explanation
Substitute parts for the HS1G are classified based on strict electrical and mechanical parameter matching within the following criteria:
Primary Substitution Criteria:
- Voltage - DC Reverse (Vr) Maximum: 400 V
- Current - Average Rectified (Io): 1 A
- Voltage - Forward (Vf) Maximum @ If: 1.3 V or lower @ 1 A
- Speed Classification: Fast Recovery ≤ 500ns, > 200mA
- Package / Case: DO-214AC, SMA
- Mounting Type: Surface Mount
- Operating Temperature - Junction: Minimum -55°C to maximum 150°C or higher
- RoHS Status: ROHS3 Compliant
Parametric Equivalent Parts maintain all critical electrical specifications within the same tolerance bands as the HS1G, differing only in reverse recovery time (trr), capacitance, or packaging format while preserving functional equivalence.
Direct Manufacturer Parts meet all primary substitution criteria with identical or superior electrical performance characteristics.
Similar Parts satisfy core voltage, current, and package requirements but may exhibit variations in recovery speed classification or forward voltage characteristics that remain within acceptable application ranges.
Parameter Comparison
| Manufacturer Part Number | Manufacturer | Vr (Max) V | Io (A) | Vf (Max) @ If (V) | trr (ns) | Speed | Package | Temp Range (°C) | Product Status |
|---|---|---|---|---|---|---|---|---|---|
| HS1G | Taiwan Semiconductor Corporation | 400 | 1 | 1.3 @ 1A | 50 | Fast Recovery ≤ 500ns | DO-214AC, SMA | -55 to 150 | Active |
| ES1G | Good-Ark Semiconductor | 400 | 1 | 1.3 @ 1A | 35 | Fast Recovery ≤ 500ns | DO-214AC, SMA | -55 to 125 | Active |
| HS1G | SURGE | 400 | 1 | 1.3 @ 1A | 50 | Fast Recovery ≤ 500ns | DO-214AC, SMA | -55 to 150 | Active |
| RS1G | Taiwan Semiconductor Corporation | 400 | 1 | 1.3 @ 1A | 150 | Fast Recovery ≤ 500ns | DO-214AC, SMA | -55 to 150 | Active |
| RS1G R3G | Taiwan Semiconductor Corporation | 400 | 1 | 1.3 @ 1A | 150 | Fast Recovery ≤ 500ns | DO-214AC, SMA | -55 to 150 | Discontinued at DiGi Electronics |
| RS1GH | Taiwan Semiconductor Corporation | 400 | 1 | 1.3 @ 1A | 150 | Fast Recovery ≤ 500ns | DO-214AC, SMA | -55 to 150 | Active |
| CURA104-G | Comchip Technology | 400 | 1 | 1.3 @ 1A | 50 | Fast Recovery ≤ 500ns | DO-214AC, SMA | -55 to 150 | Active |
| US1G-13-F | Diodes Incorporated | 400 | 1 | 1.3 @ 1A | 50 | Fast Recovery ≤ 500ns | DO-214AC, SMA | -65 to 150 | Active |
| CGRA4004-G | Comchip Technology | 400 | 1 | 1.1 @ 1A | - | Standard Recovery >500ns | DO-214AC, SMA | -55 to 150 | Active |
| ES1G-13-F | Diodes Incorporated | 400 | 1 | 1.25 @ 1A | 25 | Fast Recovery ≤ 500ns | DO-214AC, SMA | -55 to 150 | Active |
| GS1G-LTP | Micro Commercial Co | 400 | 1 | 1.0 @ 1A | - | Standard Recovery >500ns | DO-214AC, SMA | -55 to 150 | Not For New Designs |
Engineering Selection Recommendations
Recommended Primary Substitutes (Parametric Equivalents):
ES1G (Good-Ark Semiconductor) and CURA104-G (Comchip Technology) provide direct electrical equivalence to the HS1G with identical voltage, current, and forward voltage ratings. Both maintain Fast Recovery speed classification and RoHS3 compliance. ES1G offers improved reverse recovery time (35 ns versus 50 ns), while CURA104-G matches the HS1G trr specification exactly. Both are Active products with unlimited moisture sensitivity rating.
US1G-13-F (Diodes Incorporated) qualifies as a direct substitute with matching electrical specifications and extended operating temperature range (-65°C to 150°C). This part is Active and RoHS3 compliant with high inventory availability.
ES1G-13-F (Diodes Incorporated) provides superior reverse recovery time (25 ns) with slightly reduced forward voltage (1.25 V @ 1 A) and maintains all other critical parameters. This part is Active and suitable for applications requiring faster switching performance.
Parametric Equivalent Alternatives:
RS1G and RS1GH (Taiwan Semiconductor Corporation) maintain identical voltage, current, and temperature specifications but exhibit extended reverse recovery time (150 ns). RS1GH includes AEC-Q101 automotive qualification and is recommended for automotive applications. RS1G R3G is discontinued at DiGi Electronics and should not be selected for new designs.
Alternative Consideration:
CGRA4004-G (Comchip Technology) meets voltage and current requirements with improved forward voltage (1.1 V @ 1 A) but operates with Standard Recovery speed classification (>500ns). This part is suitable only for applications where switching speed is not performance-critical.
GS1G-LTP (Micro Commercial Co) carries "Not For New Designs" status and should be avoided for new circuit development despite meeting core electrical specifications.
Frequently Asked Questions (FAQ)
Q: Can ES1G directly replace HS1G in existing designs?
A: Yes. ES1G meets all primary electrical specifications: 400 V reverse voltage, 1 A average rectified current, 1.3 V forward voltage @ 1 A, and Fast Recovery speed classification. Both use DO-214AC (SMA) surface mount packages. ES1G offers improved reverse recovery time (35 ns versus 50 ns), which enhances switching performance without circuit modification.
Q: What is the difference between RS1G and HS1G?
A: Both parts share identical voltage (400 V), current (1 A), forward voltage (1.3 V @ 1 A), and temperature range (-55°C to 150°C) specifications. The primary difference is reverse recovery time: RS1G operates at 150 ns compared to HS1G at 50 ns. This makes HS1G faster for switching applications. RS1G is suitable for applications where switching speed is less critical.
Q: Is RS1GH suitable for automotive applications?
A: Yes. RS1GH carries AEC-Q101 automotive qualification and maintains all electrical specifications of the HS1G. It is the recommended choice for automotive circuit designs requiring qualified components.
Q: Why is GS1G-LTP marked "Not For New Designs"?
A: GS1G-LTP carries obsolescence status indicating the manufacturer has discontinued active support for new designs. While the part meets core electrical specifications, it should not be selected for new circuit development. Use ES1G, CURA104-G, or US1G-13-F instead.
Q: Does US1G-13-F offer any advantages over HS1G?
A: US1G-13-F provides extended operating temperature range (-65°C to 150°C versus -55°C to 150°C), allowing operation in lower temperature environments. Electrical specifications remain identical. This part is recommended for applications requiring enhanced cold-temperature performance.
Q: What is the significance of reverse recovery time (trr) in diode selection?
A: Reverse recovery time determines how quickly a diode stops conducting when reverse bias is applied. Lower trr values (25-50 ns) enable faster switching and reduced switching losses, beneficial for high-frequency applications. Higher trr values (150 ns) are acceptable for lower-frequency rectification where switching speed is not performance-critical.
Q: Can CGRA4004-G replace HS1G?
A: CGRA4004-G meets voltage and current requirements with superior forward voltage (1.1 V @ 1 A). However, it operates with Standard Recovery speed classification (>500ns) versus HS1G's Fast Recovery (≤500ns). This part is suitable only for applications where switching speed is not performance-critical and lower forward voltage is beneficial.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All listed substitute parts maintain RoHS3 compliance, matching the HS1G environmental standard. All parts also carry unlimited moisture sensitivity rating (MSL 1), eliminating special handling requirements during storage and assembly.
Q: What packaging formats are available for HS1G equivalents?
A: All substitute parts use DO-214AC (SMA) surface mount packages, ensuring mechanical compatibility with existing PCB layouts. Packaging formats vary between manufacturers: Tape & Reel (TR), Cut Tape (CT) & Digi-Reel®, and Bag. These format differences do not affect electrical performance or circuit board mounting.
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