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Taiwan Semiconductor Corporation RS3MH
- Part No.:
- RS3MH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
RS3MH.pdf
- Description:
- DIODE GEN PURP 1KV 3A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,978
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Product details
Overview
RS3MH from Taiwan Semiconductor is a 1000 V, 3 A fast recovery surface-mount rectifier in DO-214AB (SMC) package, rated for 100 A non-repetitive surge current and 175 °C maximum junction temperature, used in automotive snubber circuits and DC-DC converters requiring high-voltage reverse blocking.
For engineers reviewing the RS3MH datasheet, RS3MH pinout, RS3MH application, or RS3MH equivalent, key selection criteria include its 1000 V repetitive peak reverse voltage (VRRM), 500 ns reverse recovery time (trr), AEC-Q101 qualification, glass-passivated junction, and DO-214AB mechanical compatibility with automated SMT placement.
Technical Context
The RS3MH is a single-die, unidirectional silicon rectifier optimized for fast switching in high-voltage, moderate-current power conversion stages. Its 500 ns reverse recovery time enables efficient operation in 50–200 kHz DC-DC topologies, while the glass-passivated junction ensures stable leakage performance up to 125 °C.
Thermally, it features 15 °C/W junction-to-lead resistance and 50 °C/W junction-to-ambient resistance, supporting continuous 3 A conduction at ≤125 °C ambient when properly heatsinked. The cathode-band polarity marking and matte tin-plated leads comply with J-STD-002 solderability and JESD201 Class 2 whisker requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - blocks up to 1000 V repetitive reverse voltage, suitable for 800 V bus designs with margin |
| IF | 3 A - average forward current rating at TC = 75 °C, defines steady-state power handling |
| IFSM | 100 A - peak surge current capability for 8.3 ms half-sine, supports inrush and fault transients |
| trr | 500 ns - measured at IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; enables high-frequency switching efficiency |
| TJ max | 175 °C - maximum junction temperature, allows operation in under-hood automotive environments |
| VF @ 3A | ≤1.3 V - forward voltage drop at rated current and 25 °C, determines conduction loss in rectification path |
| IR @ 1000V | ≤250 µA @ 125 °C - reverse leakage at max rated voltage and elevated temperature, critical for standby power |
Pinout & Package
DO-214AB (SMC) surface-mount package: molded plastic body per JEDEC DO-214AB, 7.75 mm × 6.25 mm footprint, 2.45 mm height, cathode indicated by band on body, matte tin-plated leads, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry terminal | Connected to lower-potential side of circuit; must withstand full reverse voltage when off |
| Cathode | Forward current exit terminal | Marked by band; connects to output/positive rail; carries full load current and thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test plan |
| Glass-passivated junction | Provides stable reverse leakage and long-term parameter stability under humidity and thermal stress |
| Fast recovery (500 ns) | Reduces switching losses and EMI generation in high-frequency DC-DC converters and snubbers |
| DO-214AB (SMC) package | Enables automated pick-and-place assembly and delivers 15 °C/W thermal resistance to PCB copper |
| Halogen-free & RoHS compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements |
Applications
| Automotive LED Headlamp Driver | Industrial DC-DC Snubber Circuit |
|---|---|
Use Scenario: High-side switch in constant-current LED driver for adaptive front lighting systems. IC Role / Device Role / Timing Role: Freewheeling diode during MOSFET turn-off, clamping inductive kickback from boost inductor. Use Value: 1000 V VRRM prevents breakdown during 800 V transients; 500 ns trr minimizes energy loss and heat rise during 100 kHz switching. | Use Scenario: RCD snubber network across primary-side MOSFET in isolated flyback converter. IC Role / Device Role / Timing Role: Fast recovery rectifier capturing stored inductive energy and dissipating it via snubber resistor. Use Value: 100 A IFSM handles repeated surge events; glass passivation maintains low IR over 15-year automotive life. |
| On-Board Charger (OBC) Input Rectification | 48 V Telecom Power Supply Output Stage |
Use Scenario: Bridge rectifier input stage converting AC grid to DC bus in bidirectional OBC. IC Role / Device Role / Timing Role: High-voltage leg rectifier in full-wave bridge, subjected to line surges and zero-crossing stress. Use Value: 175 °C TJ max supports compact heatsinking in sealed enclosures; UL 94V-0 molding compound meets fire safety standards. | Use Scenario: Secondary-side synchronous rectifier replacement in 48 V telecom PSU output stage. IC Role / Device Role / Timing Role: Freewheeling diode in active clamp forward topology, conducting during transformer reset phase. Use Value: 3 A IF rating matches typical 50 A output at 12 V secondary; DO-214AB footprint simplifies layout reuse from legacy designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-3EWH10 | Same DO-214AB package, 1000 V VRRM, but 350 ns trr and 1.25 V VF @ 3 A | Lower forward drop and faster recovery support higher efficiency in <100 kHz converters | Prefer VS-3EWH10 where conduction loss dominates; RS3MH preferred where cost and AEC-Q101 compliance are prioritized |
| ON Semiconductor MUR3100CT | TO-220AC package, dual common-cathode configuration, 1000 V VRRM, 75 ns trr | Requires through-hole mounting and larger board area; suited for higher-power discrete designs | Select MUR3100CT only when dual-diode topology or TO-220 thermal mass is required; RS3MH offers SMT scalability and automotive qualification |
Compared with VS-3EWH10 and MUR3100CT, the RS3MH uniquely combines AEC-Q101 qualification, DO-214AB SMT compatibility, and 1000 V/3 A ratings in a single-die configuration-making it optimal for space-constrained, automotive-grade power supplies where reliability and manufacturability are co-prioritized.
Availability
RS3MH is available at Aetrix Electronics and suitable for automotive lighting, industrial DC-DC snubbers, and on-board charger (OBC) designs requiring stable component supply, AEC-Q101 compliance, and high-voltage rectification capability.
Supply support for RS3MH 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 power semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving automotive, industrial, and consumer markets since 1979.
The RS3MH belongs to TSC's RSxH fast recovery rectifier product line, engineered specifically for high-reliability, high-voltage surface-mount rectification in automotive and industrial power conversion systems.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) rating for RS3MH?
The RS3MH has a maximum repetitive peak reverse voltage (VRRM) rating of 1000 V, verified per Taiwan Semiconductor's B2304 datasheet. This rating defines the highest reverse voltage the device can block repeatedly without breakdown. At 1000 V, RS3MH supports designs with 800 V nominal bus voltages and provides 20% safety margin against transients in automotive and industrial applications.
Is RS3MH qualified for automotive applications?
Yes, RS3MH is AEC-Q101 qualified per its official datasheet. This qualification includes stress testing for temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), confirming suitability for under-hood and powertrain-related automotive systems such as LED headlamps and on-board chargers.
What is the reverse recovery time (trr) of RS3MH and how is it measured?
The RS3MH has a reverse recovery time (trr) of 500 ns, measured under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A per the B2304 datasheet. This value reflects the time required for the device to transition from forward conduction to reverse blocking, directly impacting switching loss and EMI in high-frequency power converters using RS3MH.
Which package does RS3MH use and what are its key mechanical attributes?
RS3MH uses the DO-214AB (SMC) surface-mount package. Key mechanical attributes include a 7.75 mm × 6.25 mm footprint, 2.45 mm height, glass-molded UL 94V-0 body, matte tin-plated leads compliant with J-STD-002, and cathode polarity marked by a visible band. Its RθJL is 15 °C/W, enabling effective thermal transfer to PCB copper.
Does RS3MH have halogen-free and RoHS-compliant construction?
Yes, RS3MH is both halogen-free and RoHS compliant, as confirmed in the B2304 datasheet. The molding compound contains no brominated or chlorinated flame retardants, and lead content is below 1000 ppm. These attributes meet EU Directive 2011/65/EU and support environmentally regulated industrial and automotive supply chains.
RS3MH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1000 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS3MH FAQ
1.How can I place an order for RS3MH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS3MH 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 RS3MH reliable?
The price and inventory of RS3MH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS3MH is usually 5 days.
3.What payment methods are accepted for RS3MH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS3MH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS3MH?
RS3MH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS3MH 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 RS3MH?
For technical support, including RS3MH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS3MH requirements.
6.How does Aetrix verify that RS3MH is sourced from the original manufacturer or authorized distributors?
All RS3MH 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 RS3MH meets industry standards.
7.What is the process for return or replacement of RS3MH?
All RS3MH units undergo pre-shipment inspection (PSI). If there is an issue with RS3MH, 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 RS3MH part is unused and in its original packaging.
Return procedure for RS3MH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RS3MH Tags
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