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Diodes Incorporated RS2KA-13
- Part No.:
- RS2KA-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
RS2KA-13.pdf
- Description:
- DIODE GEN PURP 800V 1.5A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:2,118
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Product details
Overview
RS2KA-13 from Diodes Incorporated is a 1.5A surface-mount fast recovery rectifier in SMA package, rated for 800V peak repetitive reverse voltage (VRRM), 1.3V forward voltage at 1.5A, and 250ns reverse recovery time - deployed in AC/DC front-end rectification and flyback snubber circuits.
For engineers reviewing the RS2KA-13 datasheet, RS2KA-13 pinout, RS2KA-13 application, or RS2KA-13 equivalent, key selection criteria include VRRM derating for capacitive loads, thermal resistance (20 K/W) under PCB copper pad heatsinking, and surge rating (50A @ 8.3ms) in offline power supplies.
Technical Context
This device uses glass-passivated silicon die with optimized carrier lifetime control to achieve fast recovery (trr = 250 ns) while maintaining low forward voltage (VFM = 1.3 V @ IF = 1.5 A) and high blocking capability (VRRM = 800 V). Its junction-to-terminal thermal resistance is 20 K/W when mounted on 5.0 mm² copper pads.
The RS2KA-13 operates across –65°C to +150°C and supports automated SMT assembly. Polarity is marked by cathode band; UL 94V-0 compliant molding compound ensures flame resistance in safety-critical power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - maximum non-repetitive reverse voltage before breakdown; sets minimum input stage isolation in 230VAC systems |
| IO @ TT=120°C | 1.5 A - average rectified current with terminal temperature limited to 120°C; defines continuous output capability |
| VFM @ IF=1.5A | 1.3 V - forward conduction loss at rated DC load; directly impacts conduction efficiency and thermal rise |
| trr | 250 ns - reverse recovery time under IF=0.5A/IR=1.0A/Irr=0.25A; critical for EMI and switching loss in 50–100kHz SMPS |
| IFSM @ 8.3ms | 50 A - non-repetitive surge rating per JEDEC method; enables robustness against line transients and cold-start inrush |
| RJT | 20 K/W - junction-to-terminal thermal resistance with 5.0 mm² copper pad; determines thermal margin in compact layouts |
Pinout & Package
SMA package: molded plastic case with solder-plated terminals, cathode identified by band, weight ≈ 0.065 g, UL 94V-0 rated.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current entry point during forward conduction | Connected to AC source or transformer secondary; must withstand full surge current and reverse voltage stress |
| Cathode | Output current exit point during forward conduction | Connected to bulk capacitor or switching node; polarity marking (band) prevents misorientation in automated placement |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated die | Eliminates surface contamination sensitivity and improves long-term reliability under humidity and bias stress |
| Fast recovery (250 ns) | Reduces switching losses and EMI generation in 50–100 kHz flyback and forward converters |
| Low VFM (1.3 V @ 1.5 A) | Lowers conduction loss by ~15% vs. standard recovery rectifiers, easing thermal design in enclosed adapters |
| 50A surge rating | Withstands 230VAC cold-start inrush and lightning-induced line surges without degradation |
Applications
| AC/DC Adapter Input Stage | Flyback Converter Output Rectifier |
|---|---|
Use Scenario: 230VAC input rectification feeding 12V/1.2A isolated output in wall-wart adapters. IC Role / Device Role / Timing Role: Primary-side unidirectional current path; blocks reverse voltage during negative half-cycle and conducts during positive half-cycle. Use Value: 800V VRRM provides 2× safety margin over 230VAC peak (325V); 250ns trr minimizes switching loss at 65kHz operation. | Use Scenario: Secondary-side rectification in 12V/1.5A flyback supply for industrial IoT sensors. IC Role / Device Role / Timing Role: Freewheeling diode clamping transformer leakage energy and delivering output current during MOSFET off-time. Use Value: Low VFM reduces conduction loss by 0.15W vs. slower alternatives, improving efficiency from 82% to 83.4% at full load. |
| Offline LED Driver Input Bridge | Surge-Protected Power Supply Input |
Use Scenario: Half-wave rectification in cost-sensitive 7W LED driver with passive PFC. IC Role / Device Role / Timing Role: Single-diode rectifier in asymmetrical topology; handles 1.5A average current with minimal thermal footprint. Use Value: SMA package fits 5mm pitch layouts; 20 K/W RJT allows operation at 115°C ambient without heatsink in sealed enclosures. | Use Scenario: Input protection stage in DIN-rail mounted 24V industrial PSU exposed to EN 61000-4-5 surges. IC Role / Device Role / Timing Role: First-line transient clamp; absorbs 50A 8.3ms surges without failure during line fault events. Use Value: Confirmed 50A IFSM rating meets Level 3 (2kV) surge immunity requirements without parallel devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L08S | VRRM = 800 V, trr = 150 ns, VFM = 1.25 V @ 1.5 A, SMB package | Lower trr and VFM, but larger SMB footprint increases board area by 35% | Prefer when EMI reduction is critical and layout space permits SMB mounting |
| ON Semiconductor MUR160 | VRRM = 600 V, trr = 50 ns, VFM = 1.0 V @ 1.5 A, DO-41 through-hole | Higher speed and lower VFM, but requires wave soldering and lacks SMT compatibility | Select only for legacy through-hole designs where reflow compatibility is not required |
Compared with STTH1L08S and MUR160, RS2KA-13 offers optimal balance of SMT compatibility, 800V rating, and thermal performance in space-constrained AC/DC inputs - making it preferred for new adapter and industrial PSU designs requiring automated assembly.
Availability
RS2KA-13 is available at Aetrix Electronics and suitable for AC/DC adapters, flyback converters, and industrial power supply inputs requiring stable component supply, consistent parametric performance, and RoHS-compliant SMT packaging.
Supply support for RS2KA-13 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in Taiwan and China.
The RS2x series targets cost-effective, high-reliability rectification in consumer and industrial power conversion - emphasizing fast recovery, surge robustness, and automated assembly readiness.
FAQ
What is the maximum operating temperature for RS2KA-13?
The RS2KA-13 has a specified operating junction temperature range of –65°C to +150°C. Its thermal design relies on junction-to-terminal resistance (20 K/W) with 5.0 mm² copper pad heatsinking; sustained operation above 120°C terminal temperature requires derating per Figure 1 in DS15004.
Can RS2KA-13 replace RS2JA in a 600V design?
Yes - RS2KA-13 (800V VRRM) exceeds the 600V rating of RS2JA and shares identical SMA package, pinout, and thermal characteristics. No layout or thermal redesign is needed, though its slightly higher VFM (1.3V vs. 1.25V for RS2JA) may increase conduction loss by ~0.075W at 1.5A.
Is RS2KA-13 suitable for use in capacitive-input filter circuits?
No - the datasheet explicitly states that current must be derated by 20% for capacitive loads due to increased peak current stress. For such topologies, consider using a higher-current-rated part like RS3KA or adding inrush limiting.
Does RS2KA-13 meet lead-free and RoHS requirements?
Yes - RS2KA-13 is manufactured with lead-free terminations and complies with EU RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level (MSL) 1, supporting standard Pb-free reflow profiles up to 260°C peak.
RS2KA-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 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 @ 800 V
- Capacitance @ Vr, F:
- 30pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -65°C ~ 150°C
RS2KA-13 FAQ
1.How can I place an order for RS2KA-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for RS2KA-13 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 RS2KA-13 reliable?
The price and inventory of RS2KA-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RS2KA-13 is usually 5 days.
3.What payment methods are accepted for RS2KA-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RS2KA-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RS2KA-13?
RS2KA-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RS2KA-13 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 RS2KA-13?
For technical support, including RS2KA-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RS2KA-13 requirements.
6.How does Aetrix verify that RS2KA-13 is sourced from the original manufacturer or authorized distributors?
All RS2KA-13 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 RS2KA-13 meets industry standards.
7.What is the process for return or replacement of RS2KA-13?
All RS2KA-13 units undergo pre-shipment inspection (PSI). If there is an issue with RS2KA-13, 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 RS2KA-13 part is unused and in its original packaging.
Return procedure for RS2KA-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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