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Taiwan Semiconductor Corporation RS2MALH
- Part No.:
- RS2MALH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
RS2MALH.pdf
- Description:
- 500NS, 2A, 1000V, FAST RECOVERY
- Quantity:
- Payment:
- Shipping:
Inventory:28,000
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Product details
Overview
RS2MALH from Taiwan Semiconductor is a 2 A, 1000 V fast recovery surface-mount rectifier in Thin SMA package, featuring 500 ns reverse recovery time, 1.06 V forward voltage at 2 A/25°C, and AEC-Q101 qualification for automotive use in snubber and freewheeling circuits.
For engineers reviewing the RS2MALH datasheet, RS2MALH pinout, RS2MALH application, or RS2MALH equivalent, key selection criteria include peak reverse voltage (1000 V), surge current capability (50 A @ 8.3 ms), thermal resistance (RθJL = 16 °C/W), junction temperature range (–55 to +175 °C), and RoHS/halogen-free compliance.
Technical Context
The RS2MALH is a single-die, glass-passivated fast recovery rectifier optimized for high-efficiency DC/DC conversion and automotive power management. Its 1000 V VRRM, 500 ns trr, and low-profile Thin SMA package enable compact, thermally robust designs in space-constrained environments.
Designed for operation up to 175 °C junction temperature, it delivers stable performance under transient load conditions with 140 A IFSM at 1.0 ms and RθJC = 14 °C/W, supporting reliable thermal dissipation on standard PCB copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports high-voltage DC bus isolation in automotive and industrial converters |
| IF | 2 A continuous - rated for sustained output current in auxiliary power supplies |
| IFSM (8.3 ms) | 50 A - handles inrush and fault currents without failure in protection-critical circuits |
| trr | 500 ns - enables high-frequency switching (>100 kHz) with reduced switching loss |
| VF @ 2 A, 25°C | 1.06 V - limits conduction loss to ≤2.12 W at full rated current |
| RθJL | 16 °C/W - allows direct thermal path to PCB copper, simplifying heatsinking |
| Junction Temp Range | –55 to +175 °C - qualified for under-hood automotive and industrial ambient conditions |
Pinout & Package
Package: Thin SMA (JEDEC DO-221AC variation), low-profile surface-mount package with cathode band polarity marking, matte tin-plated leads, moisture sensitivity level 1 (J-STD-020), and UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point | Connected to source-side of switching node or inductive load return path |
| Cathode | Output current exit point | Connected to output rail or energy storage capacitor; marked by visible band |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive power electronics including engine control and ADAS subsystems |
| Glass passivated junction | Enhanced humidity resistance and long-term stability in harsh environmental exposure |
| Low profile Thin SMA | 0.9 mm max height enables ultra-thin power modules and dense PCB layouts |
| Fast recovery (500 ns) | Reduces reverse recovery charge (Qrr) and associated EMI in high-frequency SMPS |
| Halogen-free & RoHS compliant | Meets global environmental regulations and enables lead-free reflow soldering compatibility |
Applications
| Automotive DC/DC Converters | Snubber Circuits |
|---|---|
Use Scenario: Step-down conversion in 12 V/48 V dual-battery systems for ADAS cameras and radar modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: 1000 V rating withstands load dump transients; 500 ns trr minimizes switching loss at 250 kHz operation. | Use Scenario: Clamp voltage spikes across MOSFETs in motor drive inverters. IC Role / Device Role / Timing Role: Fast-recovery diode in RCD snubber network. Use Value: Low Qrr and 1.06 V VF reduce snubber power dissipation and improve system efficiency. |
| Freewheeling Diodes | Industrial Power Supplies |
Use Scenario: Inductive load commutation in solenoid drivers and relay interfaces. IC Role / Device Role / Timing Role: Freewheeling path for stored inductor energy during switch-off. Use Value: 175 °C TJMAX ensures uninterrupted operation during sustained overcurrent events. | Use Scenario: Secondary-side rectification in isolated AC/DC adapters for factory automation controllers. IC Role / Device Role / Timing Role: High-voltage output rectifier in 24 V/48 V regulated supplies. Use Value: RθJL = 16 °C/W enables thermal design without external heatsink on 5 mm × 5 mm Cu pad. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2R06 | 600 V VRRM, 150 ns trr, TO-277 package | Limited to ≤600 V systems; faster recovery but lower voltage margin | Select when higher speed outweighs voltage derating needs in <600 V designs |
| ES2J | 600 V VRRM, 35 ns trr, SMA package, non-AEC-Q101 | Not qualified for automotive; unsuitable for under-hood deployment | Acceptable for cost-sensitive industrial supplies where AEC-Q101 is not required |
Compared with STTH2R06 and ES2J, RS2MALH provides the highest voltage rating (1000 V) and automotive qualification, making it uniquely suitable for load-dump-tolerant automotive DC/DC and industrial 800 V-class systems where both ruggedness and regulatory compliance are mandatory.
Availability
RS2MALH is available at Aetrix Electronics and suitable for automotive DC/DC converters, snubber circuits, and industrial power supplies requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for RS2MALH 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, specializing in power rectifiers, TVS devices, and automotive-qualified components.
The RS2MALH belongs to TSC's RS2xALH fast recovery rectifier family, engineered specifically for high-reliability automotive and industrial power conversion where high VRRM, fast trr, and extended temperature operation are critical.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) of RS2MALH?
The RS2MALH has a VRRM of 1000 V, confirmed in the Absolute Maximum Ratings table. This rating allows safe operation in high-voltage DC bus applications such as automotive 48 V systems and industrial 800 V PFC stages. The device maintains this rating across its full operating temperature range (–55 to +175 °C) and is validated per AEC-Q101 stress test conditions.
Is RS2MALH qualified for automotive applications?
Yes, RS2MALH is explicitly AEC-Q101 qualified, as stated in the FEATURES section. This qualification covers temperature cycling, humidity testing, mechanical shock, and high-temperature reverse bias stress-ensuring suitability for under-hood and chassis-mounted automotive electronics including body control modules and ADAS power supplies.
What is the forward voltage (VF) of RS2MALH at 2 A and 25°C?
The forward voltage of RS2MALH is 1.06 V at 2 A and 25°C, per the Electrical Specifications table. At 125°C, VF drops to 0.93 V due to negative temperature coefficient, improving conduction efficiency in thermally demanding environments without compromising thermal runaway safety.
What package type does RS2MALH use, and what are its key mechanical features?
RS2MALH uses the Thin SMA package (JEDEC DO-221AC variation), measuring 4.40 × 2.70 × 0.90 mm. Key features include matte tin-plated leads (J-STD-002 solderable), cathode band polarity indicator, UL 94V-0 flammability rating, and moisture sensitivity level 1-enabling high-yield automated placement and lead-free reflow compatibility.
What is the reverse recovery time (trr) of RS2MALH, and how does it impact switching performance?
The RS2MALH has a reverse recovery time of 500 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This value directly determines switching loss and EMI generation in high-frequency converters; at 250 kHz operation, it enables efficient energy transfer while maintaining manageable dV/dt stress on adjacent switches.
RS2MALH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-221AC, SMA Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 1000 V
- Capacitance @ Vr, F:
- 10pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS2MALH FAQ
1.How can I place an order for RS2MALH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS2MALH 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 RS2MALH reliable?
The price and inventory of RS2MALH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS2MALH is usually 5 days.
3.What payment methods are accepted for RS2MALH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS2MALH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS2MALH?
RS2MALH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS2MALH 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 RS2MALH?
For technical support, including RS2MALH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS2MALH requirements.
6.How does Aetrix verify that RS2MALH is sourced from the original manufacturer or authorized distributors?
All RS2MALH 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 RS2MALH meets industry standards.
7.What is the process for return or replacement of RS2MALH?
All RS2MALH units undergo pre-shipment inspection (PSI). If there is an issue with RS2MALH, 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 RS2MALH part is unused and in its original packaging.
Return procedure for RS2MALH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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