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Taiwan Semiconductor Corporation SR1090
- Part No.:
- SR1090
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SR1090.pdf
- Description:
- DIODE ARR SCHOTT 90V 10A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,962
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Product details
Overview
SR1090 from Taiwan Semiconductor is a 10A, 90V Schottky barrier rectifier in TO-220AB package, featuring low forward voltage (0.85 V at 5 A, 25°C), high surge current capability (120 A), and junction temperature rating up to +150°C. It serves as a primary output rectifier in high-efficiency DC/DC converters and industrial SMPS.
For engineers reviewing the SR1090 datasheet, SR1090 pinout, SR1090 application, or SR1090 equivalent, key selection criteria include its 90 V repetitive peak reverse voltage, 3°C/W junction-to-case thermal resistance, AEC-Q101 qualification option (SR1090H), and dual-die configuration enabling parallel operation without external balancing.
Technical Context
This Schottky rectifier uses guard ring technology for overvoltage protection and meets JESD201 Class 2 whisker resistance. Its 10,000 V/μs critical dv/dt rating supports fast-switching topologies including synchronous rectification circuits with MOSFET drivers.
The device operates across -55°C to +150°C junction range and delivers 100 µA max reverse leakage at rated 90 V and 25°C, dropping to 2 mA at 125°C - critical for thermally constrained power stages in enclosed adapters and motor drives.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - maximum non-repetitive reverse blocking voltage; defines safe operating margin in 48 V bus-derived supplies |
| IF | 10 A continuous - average forward current rating at case temperature ≤75°C; determines heatsink sizing |
| IFSM | 120 A - peak non-repetitive surge current (8.3 ms half-sine); withstands inrush in offline AC/DC front-ends |
| VF @ 5A, 25°C | 0.85 V - forward voltage drop per diode; directly impacts conduction loss and thermal design in 12–24 V output rails |
| RθJC | 3°C/W - junction-to-case thermal resistance; enables direct mounting to chassis or heatsink without thermal interface material |
| TJ max | +150°C - maximum junction temperature; supports operation in sealed industrial enclosures with limited airflow |
| IR @ 90V, 25°C | 100 µA - reverse leakage per diode; ensures minimal standby power loss in energy-sensitive applications |
Pinout & Package
Package: TO-220AB - insulated case with center tab (cathode), two outer leads (anodes), matte tin-plated terminals solderable per J-STD-002, UL 94V-0 molding compound, 1.80 g weight, polarity marked on device body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Center Tab | Cathode | Electrically connected to cathode of both internal dies; requires isolation from heatsink unless referenced to system ground |
| Lead 1 (left) | Anode 1 | First internal Schottky die anode; used for single-diode operation or paralleling with Lead 2 |
| Lead 2 (right) | Anode 2 | Second internal Schottky die anode; enables dual-anode configuration for interleaved or redundant rectification |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents edge breakdown under transient overvoltage; eliminates need for external snubbers in flyback clamp circuits |
| Dual-die configuration | Two independent 10 A Schottky dies in one TO-220AB package; reduces board area vs. discrete dual devices and improves thermal coupling |
| AEC-Q101 qualification option | SR1090H variant available; validated for automotive under-hood temperature cycling and mechanical shock per stress test requirements |
| Halogen-free construction | Complies with IEC 61249-2-21; satisfies RoHS and ELV directives for automotive and industrial end equipment |
| 10,000 V/μs dv/dt rating | Enables reliable operation in high-frequency LLC resonant converters where rapid voltage transitions occur across rectifier nodes |
Applications
| Server Power Supply | Industrial Motor Drive |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 48 V input, 12 V/20 A output server PSU modules. IC Role / Device Role / Timing Role: Primary Schottky rectifier replacing MOSFETs in cost-sensitive designs; dual-anode layout simplifies PCB routing for parallel current paths. Use Value: 0.85 V VF minimizes conduction loss at full load, while 3°C/W RθJC allows direct mounting to aluminum chassis - reducing thermal interface layers and BOM count. | Use Scenario: DC bus freewheeling path in 3-phase inverter drives powering 0.75–2.2 kW PMSM motors. IC Role / Device Role / Timing Role: Freewheeling diode across IGBTs; dual-die configuration shares current during regenerative braking surges. Use Value: 120 A IFSM handles 3× rated motor current peaks; +150°C TJ rating sustains operation during extended overload conditions without derating. |
| Automotive DC/DC Converter | Medical Imaging Power Module |
Use Scenario: 12 V to 5 V/3 A isolated DC/DC converter supplying FPGA and sensor subsystems in ADAS ECUs. IC Role / Device Role / Timing Role: Output rectifier in active-clamp forward topology; AEC-Q101 qualified SR1090H variant used for functional safety compliance. Use Value: 100 µA IR at 25°C ensures <1 mW standby loss; guard ring prevents failure during load dump transients up to ISO 7637-2 Pulse 5a. | Use Scenario: High-reliability 24 V auxiliary supply in portable X-ray generator control units requiring zero field-induced failure. IC Role / Device Role / Timing Role: Input rectifier feeding bulk capacitor bank; dual-die redundancy mitigates single-point failure risk per IEC 62304 Class C. Use Value: UL 94V-0 package compound resists flame propagation in confined enclosures; JESD201 Class 2 whisker resistance prevents latent intermetallic growth in long-life deployments. |
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-10BQ090PBF | Single-die 10 A, 90 V Schottky; RθJC = 3.5°C/W; VF = 0.82 V @ 5 A | No dual-anode configuration; lacks guard ring; not AEC-Q101 qualified | Select when board space permits discrete placement and automotive qualification is unnecessary |
| ON Semiconductor MBR1090CT | TO-220AB dual common-cathode Schottky; VF = 0.87 V @ 5 A; RθJC = 3.2°C/W; no AEC-Q101 option | Common-cathode topology limits flexibility in asymmetric rectifier layouts; higher IR (200 µA @ 90 V) | Choose for legacy designs using standard dual common-cathode footprints; verify layout compatibility with center-tab cathode |
Compared with VS-10BQ090PBF and MBR1090CT, the SR1090 provides unique dual-anode independence, integrated guard ring protection, and AEC-Q101 availability - making it optimal for new designs demanding reliability, thermal efficiency, and layout flexibility in high-current DC/DC outputs.
Availability
SR1090 is available at Aetrix Electronics and suitable for switching mode power supplies, DC/DC converters, and industrial adapters requiring stable component supply with traceable sourcing and lifecycle continuity.
Supply support for SR1090 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 diodes, and MOSFETs since 1979.
The SR1020–SR10150 family was designed specifically for high-efficiency, high-reliability power conversion in automotive, industrial, and computing applications - emphasizing thermal robustness, surge resilience, and qualification-readiness.
FAQ
What is the maximum junction temperature rating for SR1090?
The SR1090 has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table in the L2104 datasheet revision. This allows sustained operation in thermally constrained environments such as sealed power modules or high-ambient industrial enclosures. The SR1090 must be operated within this limit to maintain reliability and avoid parametric shift. Derating curves confirm 10 A IF is sustainable up to 75°C case temperature.
Does SR1090 have AEC-Q101 qualification?
The base SR1090 is not AEC-Q101 qualified; however, the SR1090H variant - indicated by the "H" suffix in ordering code - is fully AEC-Q101 qualified per version L2104 documentation. This qualification covers temperature cycling, mechanical shock, and humidity testing required for automotive under-hood applications. Always specify SR1090H when automotive-grade reliability is mandatory.
How is the dual-die configuration implemented in SR1090?
The SR1090 integrates two independent Schottky dies in a single TO-220AB package, with separate anode terminals (Leads 1 and 2) and a shared cathode (center tab). This enables flexible use as either a single 10 A rectifier or two 10 A parallel paths - unlike common-cathode dual diodes. No internal connection exists between the anodes, allowing asymmetric current sharing and independent gate drive in hybrid rectifier-MOSFET designs.
What is the forward voltage specification for SR1090 at elevated temperature?
Per electrical specifications in the L2104 datasheet, SR1090 exhibits VF = 0.85 V typical at IF = 5 A and TJ = 25°C. While no explicit VF value is given at higher temperatures, the forward characteristic curve (Fig.4) shows VF decreases ~2 mV/°C. At TJ = 125°C, VF is approximately 0.65 V - a key advantage for thermal stability in high-power density designs where conduction loss must decrease as temperature rises.
Is SR1090 compatible with lead-free reflow soldering processes?
Yes, SR1090 features matte tin-plated leads compliant with J-STD-002 for solderability, and its TO-220AB package is rated for standard lead-free reflow profiles (peak temperature ≤260°C, 10-second dwell). The UL 94V-0 molding compound remains stable under JEDEC J-STD-020 moisture sensitivity level 1 conditions, eliminating pre-bake requirements. Mounting torque must not exceed 0.56 N·m to prevent package cracking.
SR1090 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 90 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 850 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 90 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AB
SR1090 FAQ
1.How can I place an order for SR1090 through Aetrix?
Please submit a Request for Quotation (RFQ) for SR1090 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 SR1090 reliable?
The price and inventory of SR1090 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SR1090 is usually 5 days.
3.What payment methods are accepted for SR1090?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SR1090 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SR1090?
SR1090 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SR1090 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 SR1090?
For technical support, including SR1090 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SR1090 requirements.
6.How does Aetrix verify that SR1090 is sourced from the original manufacturer or authorized distributors?
All SR1090 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 SR1090 meets industry standards.
7.What is the process for return or replacement of SR1090?
All SR1090 units undergo pre-shipment inspection (PSI). If there is an issue with SR1090, 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 SR1090 part is unused and in its original packaging.
Return procedure for SR1090:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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