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Taiwan Semiconductor Corporation SS220ALH
- Part No.:
- SS220ALH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-221AC, SMA Flat Leads
- Datasheet:
-
SS220ALH.pdf
- Description:
- 2A, 200V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:3,449
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Product details
Overview
SS220ALH from Taiwan Semiconductor is a 2 A, 200 V Schottky barrier surface-mount rectifier in Thin SMA package, featuring 0.84 V forward voltage at 2 A and 25°C, 39 pF junction capacitance, 50 A surge current rating, and AEC-Q101 qualification for automotive-grade reliability.
For engineers reviewing the SS220ALH datasheet, SS220ALH pinout, SS220ALH application, or SS220ALH equivalent, key selection considerations include reverse voltage margin in DC/DC converters, thermal performance on 5 mm × 5 mm Cu pads, low VF trade-off versus higher VR capability, and moisture sensitivity level 1 handling for automated SMT lines.
Technical Context
The SS220ALH implements a single-die Schottky junction optimized for high-efficiency switching rectification in medium-voltage DC/DC topologies. Its 200 V VRRM enables use in 48 V–110 V bus-derived supplies, while its 0.71 V VF at 2 A and 125°C supports stable operation under elevated ambient conditions.
Thermal design relies on RθJL = 21°C/W and RθJA = 78°C/W (measured on 5 mm × 5 mm Cu pad), with junction temperature rated from –55°C to +150°C. Reverse leakage remains ≤10 µA at 25°C and ≤5 mA at 125°C, supporting low-quiescent-power standby modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 200 V - supports input rectification up to 140 V RMS or 200 V peak in offline or industrial DC/DC stages |
| IF | 2 A continuous - delivers full-rated current without derating at TA ≤ 75°C on standard PCB layout |
| VF @ 2 A, 25°C | 0.84 V max - reduces conduction loss to ≤1.68 W per device in high-frequency SMPS designs |
| IFSM | 50 A (8.3 ms) - withstands inrush and transient surges common in adapter and lighting applications |
| CJ | 39 pF - minimizes switching node ringing and EMI in >100 kHz converter designs |
| TJ max | +150°C - enables operation in under-hood automotive or enclosed industrial enclosures |
| Mechanical | Thin SMA package - 2.7 mm height allows ultra-low-profile board stacking and tight clearance designs |
Pinout & Package
Package: Thin SMA (DO-214AC), surface-mount, cathode indicated by band. Matte tin-plated leads, RoHS and halogen-free compliant, moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to source side (e.g., transformer secondary or switch node); must handle full IF and IFSM |
| Cathode | Output current terminal | Connected to output rail or filter capacitor; polarity marked by band; carries return current path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive power modules requiring extended temperature cycling and humidity exposure |
| Low VF at high TJ | 0.71 V @ 2 A, 125°C - maintains efficiency in thermally constrained environments like LED drivers |
| High IFSM/IF ratio | 25× - enables robustness against line transients without external snubbers in AC-DC adapters |
| Thin SMA footprint | 2.7 mm max height - fits beneath low-clearance heatsinks or stacked PCB assemblies |
| Level 1 MSL | No bake required before reflow - simplifies high-volume SMT manufacturing and reduces process cost |
Applications
| Switching Mode Power Supply (SMPS) | On-board DC/DC Converter |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 24–48 V input isolated flyback or forward converters. IC Role / Device Role / Timing Role: Uncontrolled rectifier replacing diode in output stage to reduce conduction loss. Use Value: 0.84 V VF cuts power loss by ~35% vs. comparable Si PN diodes, improving efficiency by 1–2% at full load. | Use Scenario: Input rectification for non-isolated buck-derived point-of-load regulators in telecom base stations. IC Role / Device Role / Timing Role: High-speed freewheeling diode in buck converter catch path. Use Value: 39 pF CJ limits reverse recovery noise, enabling clean switching above 300 kHz without added RC snubbers. |
| Lighting Application | Adapters |
Use Scenario: Output rectification in constant-current LED drivers for streetlight or industrial high-bay fixtures. IC Role / Device Role / Timing Role: Main output rectifier handling continuous 2 A load with intermittent surges. Use Value: 50 A IFSM accommodates inrush during cold-start of multi-string LED arrays without degradation. | Use Scenario: Secondary-side rectification in universal-input (90–264 VAC) wall adapters delivering 12–24 VDC. IC Role / Device Role / Timing Role: Primary output rectifier operating at 100–130 kHz switching frequency. Use Value: AEC-Q101 qualification ensures long-term reliability under thermal cycling stress typical in consumer adapter field life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-2EY20-M3/5BT | Same 200 V VRRM, 2 A IF, but VF = 0.89 V @ 2 A, 25°C; RθJA = 85°C/W | Slightly higher conduction loss and thermal resistance; less suitable for compact 75°C+ ambient layouts | Prefer SS220ALH where board space or thermal headroom is constrained |
| ON Semiconductor SB220-E3/54 | 200 V VRRM, 2 A IF, VF = 0.85 V @ 2 A, 25°C; not AEC-Q101 qualified; MSL Level 1 confirmed | Lacks automotive qualification; acceptable for industrial/commercial adapters but not under-hood use | Select SS220ALH when AEC-Q101 compliance is mandatory for OEM automotive programs |
Compared with VS-2EY20-M3/5BT and SB220-E3/54, the SS220ALH offers the lowest VF among 200 V/2 A Schottkys (0.84 V max), best thermal resistance (RθJA = 78°C/W), and only part in this group with AEC-Q101 certification-making it optimal for space-constrained, thermally demanding, or automotive-qualified designs.
Availability
SS220ALH is available at Aetrix Electronics and suitable for switching mode power supplies, on-board DC/DC converters, and lighting applications requiring stable component supply, automotive-grade qualification, and consistent Thin SMA packaging.
Supply support for SS220ALH 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, including Schottky rectifiers, MOSFETs, and TVS diodes, with global distribution and AEC-Q101 validation capability.
The SS220ALH belongs to TSC's SS2xALH Schottky rectifier family, designed specifically for high-efficiency, surface-mount DC/DC conversion in automotive, industrial, and lighting systems where low VF, high surge tolerance, and thin-profile packaging are critical.
FAQ
What is the maximum junction temperature rating for the SS220ALH?
The SS220ALH has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table. This allows sustained operation in high-ambient environments such as engine compartments or sealed industrial enclosures. Derating begins above 75°C ambient when mounted on a 5 mm × 5 mm copper pad, and the SS220ALH must be thermally modeled using RθJA = 78°C/W to ensure TJ stays within limit under actual load conditions.
Is the SS220ALH suitable for automotive applications?
Yes, the SS220ALH is AEC-Q101 qualified, confirming its suitability for automotive power electronics including body control modules, infotainment DC/DC stages, and lighting drivers. It meets stress test requirements for temperature cycling, humidity, and mechanical shock. The SS220ALH also complies with JESD201 Class 2 whisker testing and RoHS/halogen-free standards required by Tier 1 suppliers.
What is the forward voltage of the SS220ALH at 2 A and 125°C?
The SS220ALH exhibits a maximum forward voltage of 0.71 V at 2 A and 125°C, per electrical specifications table. This value reflects real-world performance under elevated thermal stress and confirms stable conduction loss behavior across the full operating temperature range. At room temperature, VF is 0.84 V max under identical current conditions.
Does the SS220ALH have moisture sensitivity level (MSL) restrictions?
The SS220ALH is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and requires no baking prior to reflow soldering. This simplifies SMT assembly for high-volume production and eliminates moisture-related popcorning risk. The Thin SMA package uses matte tin-plated leads and UL 94V-0 molding compound, fully supporting lead-free reflow profiles.
What is the junction-to-lead thermal resistance (RθJL) of the SS220ALH?
The SS220ALH has a typical junction-to-lead thermal resistance (RθJL) of 21°C/W, measured under standardized test conditions with the device mounted on a 5 mm × 5 mm copper pad. This parameter is critical for estimating die temperature rise directly from lead temperature measurements during thermal validation, and supports accurate thermal modeling when the SS220ALH is used in thermally dense power sections.
SS220ALH 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:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 200 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 200 V
- Capacitance @ Vr, F:
- 39pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Thin SMA
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS220ALH FAQ
1.How can I place an order for SS220ALH through Aetrix?
Please submit a Request for Quotation (RFQ) for SS220ALH 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 SS220ALH reliable?
The price and inventory of SS220ALH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS220ALH is usually 5 days.
3.What payment methods are accepted for SS220ALH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS220ALH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS220ALH?
SS220ALH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS220ALH 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 SS220ALH?
For technical support, including SS220ALH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS220ALH requirements.
6.How does Aetrix verify that SS220ALH is sourced from the original manufacturer or authorized distributors?
All SS220ALH 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 SS220ALH meets industry standards.
7.What is the process for return or replacement of SS220ALH?
All SS220ALH units undergo pre-shipment inspection (PSI). If there is an issue with SS220ALH, 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 SS220ALH part is unused and in its original packaging.
Return procedure for SS220ALH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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