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Taiwan Semiconductor Corporation HS1ML
- Part No.:
- HS1ML
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-219AB
- Datasheet:
-
HS1ML.pdf
- Description:
- DIODE GEN PURP 1KV 1A SUB SMA
- Quantity:
- Payment:
- Shipping:
Inventory:34,222
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Product details
Overview
HS1ML from Taiwan Semiconductor is a 1000V, 1A surface-mount high-efficiency rectifier diode in Sub SMA package, featuring 1.70V forward voltage at 1A and 75ns reverse recovery time, used in high-voltage DC-DC converters and switching inverters.
For engineers reviewing the HS1ML datasheet, HS1ML pinout, HS1ML application, or HS1ML equivalent, key selection criteria include peak reverse voltage (1000V), forward surge current rating (30A), junction temperature range (−55°C to +150°C), thermal resistance (100°C/W), and halogen-free RoHS-compliant construction.
Technical Context
The HS1ML is a single-die, glass-passivated silicon rectifier optimized for high-voltage switching-mode power supplies. Its 1000V VRRM and 75ns trr support fast-switching topologies while maintaining low conduction loss under 1A DC load.
Designed with matte tin-plated leads compliant with J-STD-002 and JESD 201 Class 1A whisker testing, the HS1ML operates reliably across −55°C to +150°C junction temperature and meets UL 94V-0 flammability requirements in its Sub SMA molded package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports primary-side rectification in offline SMPS up to 700V DC bus |
| IF | 1 A continuous - rated for steady-state output rectification in compact DC-DC modules |
| IFSM | 30 A (8.3ms) - withstands inrush and transient surges in PFC and flyback circuits |
| VF | 1.70 V @ 1A, 25°C - defines conduction loss of 1.7W at full load, impacting thermal design |
| trr | 75 ns - enables operation in 100–500 kHz switching converters with minimal switching loss |
| RθJA | 100 °C/W - requires ≤1.7W power dissipation to stay below 150°C junction under still-air conditions |
| Junction Cap. | 15 pF @ 1MHz, 4V - limits high-frequency displacement current in snubberless designs |
Pinout & Package
Package: Sub SMA - low-profile, surface-mount package with cathode band polarity marking, 0.019g mass, UL 94V-0 molding compound, and J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry node | Connected to lower-potential side (e.g., transformer secondary center-tap or switch node) |
| Cathode | Current exit node | Marked by band; connects to output rail or filter capacitor positive terminal |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated junction | Enables stable leakage performance (<5 µA @ 25°C) and long-term reliability in humid environments |
| Sub SMA low-profile package | Reduces board height to <1.1 mm and supports automated pick-and-place with standard nozzles |
| 1000V VRRM rating | Eliminates need for series-connected diodes in 800V-class industrial and telecom power supplies |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU Directive 2011/65/EU for environmentally regulated end equipment |
| Junction temp. range −55°C to +150°C | Supports deployment in automotive under-hood and industrial motor drive control cabinets |
Applications
| Industrial Switch-Mode Power Supply | Telecom DC-DC Brick Rectification |
|---|---|
Use Scenario: Primary-side output rectification in 48V-input, 12V-output 100W telecom DC-DC brick with 300kHz switching frequency. IC Role / Device Role / Timing Role: High-voltage freewheeling rectifier handling 1A average output current and 30A surge transients. Use Value: 75ns trr minimizes switching loss during hard-commutation; 1000V rating provides 2× safety margin over 400V reflected voltage. | Use Scenario: Secondary-side synchronous rectifier replacement in isolated 3.3V/20A server VRM where layout space is constrained. IC Role / Device Role / Timing Role: Standalone Schottky-alternative rectifier in compact Sub SMA footprint with no gate drive required. Use Value: 1.70V VF yields predictable conduction loss without gate timing complexity; 100°C/W RθJA enables thermal management on 2-layer PCB. |
| Motor Drive Freewheeling Diode | Renewable Energy Inverter Stage |
Use Scenario: Freewheeling path for IGBTs in 24V BLDC motor controller operating at ambient 85°C. IC Role / Device Role / Timing Role: Clamp diode providing safe current recirculation during PWM off-time. Use Value: 150°C TJMAX ensures margin under sustained 85°C case temperature; 30A IFSM handles motor stall currents. | Use Scenario: DC link rectification in micro-inverter stage converting PV panel output (up to 600V) to 400V DC bus. IC Role / Device Role / Timing Role: High-reliability unidirectional conduction element in outdoor-rated solar conversion system. Use Value: Glass passivation and halogen-free compound ensure long-term stability under UV exposure and thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R06 | 600V VRRM, 1.15V VF, 50ns trr, DO-214AC package | Limited to ≤600V systems; lower forward drop improves efficiency at light loads | Select when 600V rating suffices and faster recovery is prioritized over voltage headroom |
| SB1100 | 1000V VRRM, 1.7V VF, 100ns trr, SMA package, higher RθJA (120°C/W) | Slower recovery increases switching loss above 200kHz; less thermally efficient | Acceptable for lower-frequency (<150kHz) industrial supplies where cost is critical |
Compared with STTH1R06 and SB1100, the HS1ML uniquely balances 1000V capability, 75ns recovery, and Sub SMA thermal performance-making it optimal for space-constrained, high-input-voltage DC-DC and inverter designs requiring both voltage margin and mid-frequency efficiency.
Availability
HS1ML is available at Aetrix Electronics and suitable for industrial motor drives, telecom DC-DC bricks, and renewable energy inverters requiring stable component supply and long-lifecycle sourcing.
Supply support for HS1ML includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power electronics markets since 1979.
The HS1ML belongs to TSC's HS1xL high-voltage rectifier family, engineered specifically for compact, high-efficiency AC-DC and DC-DC conversion in industrial, telecom, and green energy systems.
FAQ
What is the maximum repetitive peak reverse voltage rating for HS1ML?
The HS1ML has a maximum repetitive peak reverse voltage (VRRM) rating of 1000 V, verified per TSC C2103 datasheet revision. This rating allows use in high-voltage DC bus applications such as photovoltaic inverters and industrial SMPS where derating to 80% yields 800V working voltage. The HS1ML must not be operated beyond this absolute maximum to prevent avalanche breakdown or catastrophic failure.
Does HS1ML have a specified forward voltage at elevated temperature?
Yes, the HS1ML forward voltage (VF) is characterized at 25°C (1.70 V @ 1A), but datasheet curves confirm VF decreases to ~1.55 V at 125°C junction temperature due to negative temperature coefficient of silicon PN junctions. This behavior reduces conduction loss under thermal stress, and the HS1ML remains within specification across its full −55°C to +150°C operating range.
Is HS1ML compatible with lead-free reflow soldering processes?
Yes, the HS1ML uses matte tin-plated leads qualified per J-STD-002 for solderability and complies with J-STD-020 Level 1 moisture sensitivity-meaning it can be subjected to standard lead-free reflow profiles (peak 260°C) without baking. Its Sub SMA package and UL 94V-0 compound are fully compatible with IPC-J-STD-020D-compliant assembly lines.
How does the junction-to-ambient thermal resistance of HS1ML affect PCB layout?
The HS1ML has a typical RθJA of 100°C/W in still air. To maintain TJ ≤ 150°C at 1.7W dissipation (1A × 1.7V), the PCB must provide ≥1 cm² of 1-oz copper pour connected to both terminals. Adding thermal vias under the cathode/anode pads reduces effective RθJA by ~20–30%, directly improving reliability of the HS1ML in high-power-density layouts.
What marking code identifies the HS1ML on the device body?
The HS1ML is marked with "HML" on the device body, consistent with TSC's HS1xL series coding scheme where "H" denotes HS1 family, "M" indicates 1000V rating, and "L" specifies Sub SMA package. This marking appears adjacent to the cathode band and is laser-etched for permanent identification during automated optical inspection (AOI) and field service verification of the HS1ML.
HS1ML Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-219AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.7 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 75 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 15pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Sub SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
HS1ML FAQ
1.How can I place an order for HS1ML through Aetrix?
Please submit a Request for Quotation (RFQ) for HS1ML on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for HS1ML reliable?
The price and inventory of HS1ML are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HS1ML is usually 5 days.
3.What payment methods are accepted for HS1ML?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HS1ML transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HS1ML?
HS1ML orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HS1ML order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for HS1ML?
For technical support, including HS1ML datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HS1ML requirements.
6.How does Aetrix verify that HS1ML is sourced from the original manufacturer or authorized distributors?
All HS1ML products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that HS1ML meets industry standards.
7.What is the process for return or replacement of HS1ML?
All HS1ML units undergo pre-shipment inspection (PSI). If there is an issue with HS1ML, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The HS1ML part is unused and in its original packaging.
Return procedure for HS1ML:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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