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Taiwan Semiconductor Corporation RS2MAH
- Part No.:
- RS2MAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
RS2MAH.pdf
- Description:
- DIODE GEN PURP 1.5A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
RS2MAH from Taiwan Semiconductor is a 1000 V repetitive peak reverse voltage, 1.5 A average forward current fast recovery surface-mount rectifier in DO-214AC (SMA) package, with 500 ns reverse recovery time and AEC-Q101 qualification for automotive-grade reliability in high-voltage DC/DC conversion and snubber circuits.
For engineers reviewing the RS2MAH datasheet, RS2MAH pinout, RS2MAH application, or RS2MAH equivalent, key selection criteria include its 1000 V VRRM, 500 ns trr at IF = 0.5 A / IR = 1.0 A, glass-passivated junction, JESD201 Class 2 whisker resistance, and UL 94V-0 molded compound - all critical for under-hood automotive power designs requiring thermal robustness and long-term stability.
Technical Context
The RS2MAH is a single-die, unidirectional fast recovery rectifier optimized for high-voltage switching applications where low reverse recovery charge and stable leakage performance across temperature are essential. Its 500 ns trr and 200 µA IR at 125°C support efficient operation in flyback and snubber networks with minimal switching loss.
Thermally, it delivers RθJL = 18°C/W and RθJA = 55°C/W in standard PCB mounting, enabling 1.5 A continuous conduction up to +175°C junction temperature while maintaining compliance with AEC-Q101 stress test requirements including temperature cycling and HTRB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports primary-side rectification in 800 V AC-input or 600 V DC bus systems without derating |
| IF | 1.5 A average - sustains continuous conduction in compact automotive DC/DC converters with minimal heatsinking |
| trr | 500 ns - reduces switching losses and EMI in high-frequency (>100 kHz) flyback and active clamp topologies |
| IR @ 125°C | 200 µA - ensures low standby power loss and stable blocking in high-temperature engine compartment environments |
| RθJL | 18°C/W - enables direct thermal coupling to copper pour for reliable 1.5 A operation at TJ = 175°C |
| Polarity | Cathode band marked - unambiguous orientation for automated placement and post-solder inspection |
| Moisture Sensitivity | Level 1 (J-STD-020) - no baking required prior to reflow, simplifying SMT line integration |
Pinout & Package
DO-214AC (SMA) surface-mount package: molded plastic body per JEDEC DO-214AC, matte tin-plated leads, cathode indicated by band, weight ≈ 0.060 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node) |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output rail or filter capacitor positive; defines polarity during layout and assembly |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood use including temperature cycling, HTRB, and mechanical shock per stress test plan |
| Glass passivated junction | Prevents moisture ingress and surface contamination, ensuring long-term IR stability in humid environments |
| Fast recovery (500 ns) | Minimizes reverse recovery energy loss and associated diode ringing in high-frequency SMPS |
| UL 94V-0 molding compound | Meets flammability safety requirements for automotive and industrial power modules |
| JESD201 Class 2 whisker resistance | Eliminates tin whisker risk in long-life automotive electronics operating >15 years |
Applications
| Automotive DC/DC Converters | High-Voltage Snubber Networks |
|---|---|
Use Scenario: Step-down conversion from 48 V or 400 V battery rails to 12 V/5 V for ADAS ECUs and infotainment systems. IC Role / Device Role / Timing Role: Primary-side fast recovery rectifier in synchronous or quasi-resonant flyback topology. Use Value: 1000 V VRRM provides 2× margin over 400 V nominal bus, while 500 ns trr reduces switching loss by >30% vs. standard recovery diodes. | Use Scenario: Clamp circuit across IGBTs or MOSFETs in motor inverters and on-board chargers. IC Role / Device Role / Timing Role: Fast-recovery snubber diode absorbing turn-off voltage spikes. Use Value: Low Qrr and 200 µA IR at 125°C ensure minimal power dissipation and stable clamping during repeated switching cycles. |
| LED Headlamp Drivers | Industrial AC-DC Power Supplies |
Use Scenario: Secondary-side rectification in constant-current LED drivers powering adaptive front lighting systems. IC Role / Device Role / Timing Role: Output rectifier delivering regulated current to high-brightness LED arrays. Use Value: AEC-Q101 qualification and 175°C TJMAX guarantee uninterrupted operation in sealed headlamp enclosures reaching >120°C ambient. | Use Scenario: Input bridge or output rectification in DIN-rail mounted 24–48 V industrial PSUs. IC Role / Device Role / Timing Role: High-reliability discrete rectifier replacing legacy axial-leaded parts in automated SMT lines. Use Value: DO-214AC package enables high-density layout; level-1 MSL eliminates pre-reflow baking, reducing production overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | 600 V VRRM, 1.1 A IF, 75 ns trr, TO-277 package | Lower voltage rating; faster recovery but reduced current and thermal capability | Preferred only where <600 V systems demand ultra-fast switching and space-constrained TO-277 layout is acceptable |
| VS-1N5819HM3/85A | 40 V VRRM, 1 A IF, Schottky architecture, 10 ns trr | Not suitable for >100 V applications; zero Qrr but limited voltage range | Only viable in low-voltage (<45 V), high-efficiency DC/DC where 1000 V blocking is unnecessary |
Compared with STTH1L06S and VS-1N5819HM3/85A, the RS2MAH uniquely balances 1000 V blocking, 1.5 A current, and automotive-grade reliability in a standard DO-214AC footprint - making it the only drop-in solution for AEC-Q101-compliant 400–800 V automotive power stages requiring no layout revision.
Availability
RS2MAH is available at Aetrix Electronics and suitable for automotive DC/DC converters, high-voltage snubber networks, and LED headlamp drivers requiring stable component supply with full traceability and long-lifecycle support.
Supply support for RS2MAH 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 Company (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS diodes, and automotive-qualified components since 1995.
The RS2MAH belongs to TSC's RS2x AH fast recovery rectifier product line, engineered specifically for AEC-Q101-compliant automotive power conversion where high-voltage blocking, thermal resilience, and automated assembly compatibility are mandatory.
FAQ
What is the maximum junction temperature rating for RS2MAH?
The RS2MAH has a maximum junction temperature (TJMAX) of +175°C, verified per AEC-Q101 stress testing and supported by its RθJL = 18°C/W thermal resistance. This allows continuous 1.5 A operation in engine bay environments where board temperatures exceed 125°C, provided PCB copper area meets recommended pad layout guidelines in the RS2MAH datasheet.
Is RS2MAH pin-compatible with other devices in the RS2x AH series?
Yes, all RS2x AH devices - including RS2AAH through RS2MAH - share identical DO-214AC (SMA) package dimensions, anode/cathode pinout, and solder pad layout. Voltage variants differ only in internal die construction; no PCB redesign is needed when upgrading from RS2KAH (800 V) to RS2MAH (1000 V) for enhanced system margin.
Does RS2MAH meet RoHS and halogen-free requirements?
Yes, RS2MAH is fully RoHS compliant and halogen-free per IEC 61249-2-21, confirmed in Taiwan Semiconductor's material declarations. The molding compound contains no brominated flame retardants, chlorine, or fluorine above threshold limits, satisfying automotive OEM environmental specifications such as GMW3059 and Ford WSS-M99P9999-A1.
What is the reverse recovery time test condition for RS2MAH?
The RS2MAH reverse recovery time (trr) is specified as 500 ns under conditions of IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, measured using the test circuit in Figure 6 of the RS2MAH datasheet (Version B2304). This reflects real-world switching behavior in flyback and snubber applications, not idealized small-signal conditions.
Can RS2MAH be used in non-automotive industrial applications?
Yes, RS2MAH is widely deployed in industrial AC-DC supplies, solar microinverters, and UPS systems due to its 1000 V VRRM, 175°C TJMAX, and UL 94V-0 package. While AEC-Q101 qualification adds assurance for mission-critical use, its electrical and thermal specs make RS2MAH equally suitable for ruggedized industrial equipment operating in extended temperature ranges.
RS2MAH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 500 ns
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Capacitance @ Vr, F:
- 50pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
RS2MAH FAQ
1.How can I place an order for RS2MAH through Aetrix?
Please submit a Request for Quotation (RFQ) for RS2MAH 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 RS2MAH reliable?
The price and inventory of RS2MAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS2MAH is usually 5 days.
3.What payment methods are accepted for RS2MAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS2MAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS2MAH?
RS2MAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS2MAH 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 RS2MAH?
For technical support, including RS2MAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS2MAH requirements.
6.How does Aetrix verify that RS2MAH is sourced from the original manufacturer or authorized distributors?
All RS2MAH 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 RS2MAH meets industry standards.
7.What is the process for return or replacement of RS2MAH?
All RS2MAH units undergo pre-shipment inspection (PSI). If there is an issue with RS2MAH, 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 RS2MAH part is unused and in its original packaging.
Return procedure for RS2MAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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