My Inquiry
My Account
Diodes Incorporated SB180-T
- Part No.:
- SB180-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-204AL, DO-41, Axial
- Datasheet:
-
SB180-T.pdf
- Description:
- DIODE SCHOTTKY 80V 1A DO41
- Quantity:
- Payment:
- Shipping:
Inventory:4,641
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SB180-T from Diodes Incorporated is a 1.0A, 80V peak repetitive reverse voltage Schottky barrier rectifier in DO-41 package, featuring 0.80V forward voltage at 1.0A, 25A non-repetitive surge capability, and 15K/W junction-to-lead thermal resistance-used in low-voltage DC/DC converter output stages for polarity protection and freewheeling.
For engineers reviewing the SB180-T datasheet, SB180-T pinout, SB180-T application, or SB180-T equivalent, key selection criteria include forward voltage drop at rated current, thermal resistance under lead-mounted conditions, surge rating for inductive load switching, and RoHS-compliant tin-plated leads suitable for automated SMT reflow (tape-and-reel format).
Technical Context
This discrete Schottky diode employs guard ring die construction to enhance transient immunity and suppress leakage during high dv/dt events. Its low forward voltage minimizes conduction loss in 3.3V–12V output rails, while the 80V VRRM rating supports 48V input systems with margin.
The device operates across –65°C to +125°C, with thermal performance validated under JEDEC-defined lead temperature constraints (9.5mm from case). Junction capacitance of 80pF at 4V reverse bias enables stable behavior in high-frequency (>100kHz) switching topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 80 V - Maximum reverse blocking voltage before breakdown; sets upper limit for system bus voltage derating. |
| IF(AV) | 1.0 A @ TT = 85°C - Continuous average forward current under specified thermal mounting condition. |
| VFM | 0.80 V @ IF = 1.0A, TA = 25°C - Directly determines power loss (0.8W) and heat generation in steady-state operation. |
| IFSM | 25 A (8.3ms half-sine) - Withstands motor startup or capacitor inrush surges without failure. |
| RJL | 15 K/W - Enables efficient heat transfer from junction to PCB pad via lead termination; critical for thermal design. |
| IRM | 0.5 mA @ 25°C, 10 mA @ 100°C - Low leakage preserves efficiency in standby and high-temp environments. |
| Cj | 80 pF @ VR = 4V, f = 1MHz - Limits high-frequency switching noise and affects snubber design in flyback/freewheeling circuits. |
Pinout & Package
DO-41 axial-leaded plastic package with cathode band marking; leads are tin-plated, solderable per MIL-STD-202 Method 208, and rated for 260°C/10s high-temperature soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node or ground return) in freewheeling path. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; tied to positive rail or output node; blocks reverse current up to 80V. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and transient robustness without increasing forward voltage or leakage. |
| Lead-free, RoHS-compliant finish | Enables compliance with EU Directive 2002/95/EC and supports Pb-free reflow profiles. |
| Low thermal resistance (RJL = 15 K/W) | Reduces junction temperature rise by ~15°C per watt vs. typical DO-41 diodes with higher RJL. |
| 25A surge rating (JEDEC Method) | Supports reliable operation in automotive load-dump or industrial motor-control freewheeling applications. |
Applications
| DC/DC Converter Output Rectification | Reverse Polarity Protection |
|---|---|
Use Scenario: Used as secondary-side rectifier in 5V/12V isolated flyback or buck-derived converters. IC Role / Device Role / Timing Role: Freewheeling diode conducting during MOSFET off-time; defines minimum output voltage ripple and conduction loss. Use Value: 0.80V VFM reduces power loss by ~15% versus comparable 1A silicon diodes, improving efficiency at light-to-moderate loads. | Use Scenario: Placed in series with power input to prevent damage from incorrect battery or adapter connection. IC Role / Device Role / Timing Role: Anode-to-input, cathode-to-system; conducts only during correct polarity, blocking reverse current. Use Value: Low 0.80V forward drop limits voltage loss in always-on supply paths, preserving >93% of nominal input voltage. |
| Inductive Load Freewheeling | Low-Voltage AC/DC Adapter Output |
Use Scenario: Connected across relay coils, solenoids, or small DC motors to clamp inductive kickback. IC Role / Device Role / Timing Role: Provides low-impedance path for stored magnetic energy during switch turn-off. Use Value: 25A IFSM withstands repeated 10–20A transient spikes, extending reliability in 24V control systems. | Use Scenario: Final rectifier stage in wall-wart adapters delivering 3.3V–12V to IoT sensors or embedded controllers. IC Role / Device Role / Timing Role: Converts transformer secondary AC to unregulated DC; operates continuously at <1A average current. Use Value: DO-41 package allows through-hole mounting on cost-sensitive consumer PCBs; RoHS compliance meets global market access requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB180-A | Same electrical specs; packaged in 5K ammo pack instead of tape-and-reel. | Not optimized for automated pick-and-place; requires manual or bulk-feed placement. | Select when prototyping or low-volume assembly avoids reel handling infrastructure. |
| SS18 | Same DO-41 package, 80V VRRM, but higher VFM (0.85V typ.) and lower IFSM (15A). | Limited surge margin in motor-control freewheeling; less efficient at full 1A load. | Acceptable where cost sensitivity outweighs 50mV VFM penalty and 10A surge headroom. |
Compared with SB180-A and SS18, SB180-T provides identical electrical performance with tape-and-reel packaging for high-throughput SMT lines, while offering superior surge tolerance and lower forward drop than SS18-making it optimal for production-grade 1A power conversion and protection designs.
Availability
SB180-T is available at Aetrix Electronics and suitable for DC/DC converter output rectification, reverse polarity protection, and inductive load freewheeling requiring stable component supply and RoHS-compliant manufacturing.
Supply support for SB180-T 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 Dallas, Texas, with design and manufacturing operations across Asia and the Americas.
The SBxx0 series targets cost-sensitive, high-efficiency power rectification in consumer, industrial, and computing power supplies-emphasizing low VFM, robust surge handling, and lead-free manufacturability.
FAQ
What is the maximum allowable junction temperature for SB180-T?
The SB180-T has an operating junction temperature range of –65°C to +125°C. Its absolute maximum Tj is 125°C under continuous operation; exceeding this risks parametric shift and long-term reliability degradation. Thermal design must ensure TJ remains within limit using measured RJL (15 K/W) and actual power dissipation.
Can SB180-T replace a standard PN-junction rectifier in a 12V automotive circuit?
Yes-SB180-T can replace 1N400x or 1N540x diodes in 12V automotive circuits where low forward voltage is beneficial. Its 80V VRRM exceeds typical 12V system transients (up to 40V), and 25A IFSM handles load-dump surges better than most general-purpose rectifiers.
Is SB180-T compatible with lead-free reflow soldering processes?
Yes-SB180-T features bright tin-plated leads qualified for lead-free reflow per J-STD-020C, with a maximum peak temperature rating of 260°C for 10 seconds. Its UL 94V-0 molded plastic case also meets flammability requirements for modern PCB assemblies.
How does the guard ring construction improve reliability?
The guard ring die structure surrounds the active Schottky junction to suppress edge breakdown and reduce leakage under high dv/dt or reverse-bias stress. This improves transient immunity during inductive switching and extends lifetime in noisy industrial environments without compromising forward conduction characteristics.
SB180-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-204AL, DO-41, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 80 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 800 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 80 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-41
- Operating Temperature - Junction:
- -65°C ~ 125°C
SB180-T FAQ
1.How can I place an order for SB180-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SB180-T 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 SB180-T reliable?
The price and inventory of SB180-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SB180-T is usually 5 days.
3.What payment methods are accepted for SB180-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SB180-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SB180-T?
SB180-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SB180-T 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 SB180-T?
For technical support, including SB180-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SB180-T requirements.
6.How does Aetrix verify that SB180-T is sourced from the original manufacturer or authorized distributors?
All SB180-T 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 SB180-T meets industry standards.
7.What is the process for return or replacement of SB180-T?
All SB180-T units undergo pre-shipment inspection (PSI). If there is an issue with SB180-T, 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 SB180-T part is unused and in its original packaging.
Return procedure for SB180-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SB180-T Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
