My Inquiry
My Account
Diodes Incorporated SBR1A40S1-7
- Part No.:
- SBR1A40S1-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
SBR1A40S1-7.pdf
- Description:
- DIODE SBR 40V 1A SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:20,308
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SBR1A40S1-7 from Diodes Incorporated is a 1A, 40V Super Barrier Rectifier (SBR®) in SOD-123 package, featuring 0.52V max forward voltage at 1A/25°C, ≤200µA reverse leakage at 40V/25°C, and +150°C junction temperature rating - deployed in DC-DC converter output rectification for compact power supplies.
For engineers reviewing the SBR1A40S1-7 datasheet, SBR1A40S1-7 pinout, SBR1A40S1-7 application, or SBR1A40S1-7 equivalent, key selection criteria include low VF for efficiency-critical 5–12V output rails, high-temperature stability in thermally constrained PCB layouts, and SOD-123 footprint compatibility with space-constrained industrial and automotive auxiliary power designs.
Technical Context
This SBR device replaces conventional Schottky diodes in low-voltage, high-efficiency rectification where forward voltage and thermal stability are critical. Its patented Super Barrier structure achieves lower VF than standard Schottkys while maintaining superior reverse leakage control up to +150°C junction temperature.
The SOD-123 package enables surface-mount integration with minimal thermal resistance (RθJC = 80°C/W) and supports automated assembly. Polarity is defined by cathode band marking, and the device operates reliably under repetitive surge currents up to 20A (8.3ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max VRRM | 40 V - blocks up to 40V reverse bias without breakdown in DC-DC secondary-side applications. |
| IO (TC=65°C) | 1 A - continuous average forward current rating at 65°C case temperature, suitable for 1W-class power stages. |
| VF (1A, 25°C) | 0.52 V max - reduces conduction loss by ~15% vs. typical 0.6V Schottky in 5V/1A rail designs. |
| IR (40V, 25°C) | 200 µA max - limits standby power loss in always-on systems like automotive body controllers. |
| TJ Operating Range | −65°C to +150°C - enables operation in under-hood automotive environments and sealed industrial enclosures. |
| RθJC | 80 °C/W - allows direct thermal coupling to copper pour for passive cooling in fanless designs. |
Pinout & Package
Package: SOD-123 - surface-mount plastic case (UL 94V-0), 0.004g weight, matte tin-plated alloy-42 leads, cathode band polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to switching node (e.g., buck converter low-side switch drain) to enable unidirectional conduction. |
| Cathode | Forward current exit / reverse blocking terminal | Connected to output rail; cathode band identifies this terminal for correct PCB layout and assembly orientation. |
Key Features
| Feature | Design Value |
|---|---|
| Patented SBR® technology | Combines low VF of Schottky with near-Junction-barrier reverse leakage control - eliminates trade-off between efficiency and leakage. |
| Soft, fast switching | Minimizes EMI generation during turn-off in high-frequency (≥500kHz) DC-DC converters without snubbers. |
| +150°C TJ rating | Enables use in high-ambient environments (e.g., engine bay electronics) without derating beyond datasheet curves. |
| Lead-free & Halogen-free | Fully RoHS 3 compliant (<900ppm Br/Cl, <1000ppm Sb); qualified for automotive PPAP and IATF 16949 manufacturing. |
Applications
| USB-C Power Delivery Adapter | Automotive Body Control Module |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 20W–45W flyback or active clamp forward converters. IC Role / Device Role / Timing Role: Unidirectional output rectifier replacing MOSFET+driver complexity in cost-sensitive adapters. Use Value: 0.52V VF reduces conduction loss by ≥0.05W vs. standard Schottky, improving efficiency from 89% to 90.2% at full load. |
Use Scenario: 12V-to-5V/3.3V auxiliary supply rectification in BCMs with ambient temperatures up to +105°C. IC Role / Device Role / Timing Role: Output rectifier in isolated DC-DC modules powering CAN transceivers and microcontrollers. Use Value: Stable 200µA IR at 100°C ensures <10µW standby loss - critical for battery-run sleep modes lasting >1 year. |
| Industrial IoT Sensor Node | White Goods Motor Drive Power Supply |
Use Scenario: Input rectification for ultra-low-power AC-DC converters powering LoRaWAN or NB-IoT sensor nodes. IC Role / Device Role / Timing Role: Bridge or half-wave rectifier feeding linear regulator or buck converter input capacitor. Use Value: SOD-123 footprint fits 8mm² PCB area budget; 0.004g mass avoids mechanical stress on thin-flex PCBs. |
Use Scenario: Auxiliary 24V supply rectification in BLDC motor drive inverters exposed to vibration and thermal cycling. IC Role / Device Role / Timing Role: Output rectifier in flyback supply powering gate drivers and MCU. Use Value: 20A IFSM withstands inrush surges during compressor startup; RθJC = 80°C/W maintains TJ <135°C under 1.2A peak load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT1A40S1-7 | Same electrical specs but optimized for AEC-Q101 qualification; tighter IR distribution (18µA typ at 40V/25°C). | Required for automotive production programs needing PPAP documentation and change control. | Select when automotive qualification and traceability are mandatory - otherwise SBR1A40S1-7 offers identical performance at lower cost. |
| SS14-E3/5AT | Standard Schottky; VF = 0.5V max at 1A/25°C but IR = 500µA at 40V/25°C - 2.5× higher leakage. | Suitable for non-automotive consumer applications where leakage is not critical and cost is primary. | Choose only if thermal margin exceeds 20°C and standby power budget allows ≥25µW extra loss at 100°C. |
Compared with SBRT1A40S1-7, the SBR1A40S1-7 delivers identical electrical performance without AEC-Q101 documentation overhead; versus SS14-E3/5AT, it cuts high-temperature leakage by >70%, enabling reliable operation in thermally aggressive industrial and automotive edge nodes.
Availability
SBR1A40S1-7 is available at Aetrix Electronics and suitable for USB-C power adapters, automotive body control modules, and industrial IoT sensor nodes requiring stable component supply across multi-year production cycles.
Supply support for SBR1A40S1-7 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, manufacturing, and sales operations across Asia, Europe, and North America.
The SBR® product line delivers high-efficiency, high-reliability rectifiers targeting power conversion in automotive, industrial, and computing applications where low VF and high-temperature stability are essential.
FAQ
Is SBR1A40S1-7 pin-compatible with standard SOD-123 Schottky diodes?
Yes - SBR1A40S1-7 uses the industry-standard SOD-123 footprint with anode and cathode terminals matching JEDEC MO-202AA. The cathode band marking aligns with IPC-7351B conventions, enabling direct replacement in existing layouts without pad redesign.
What is the maximum allowable PCB copper area for thermal relief at 1A continuous current?
Per Diodes' recommended pad layout (DS33306, Note 5), a minimum 25 mm² (5mm × 5mm) 2-oz copper pour connected directly to the cathode pad reduces RθJA to 407°C/W, keeping TJ ≤125°C at 1A/65°C ambient - no heatsink required.
Does SBR1A40S1-7 meet AEC-Q101 requirements for automotive use?
No - SBR1A40S1-7 is not AEC-Q101 qualified. For automotive production, Diodes specifies SBRT1A40S1-7, which undergoes full AEC-Q101 stress testing, PPAP submission, and IATF 16949-controlled manufacturing.
How does SBR1A40S1-7 perform at 125°C junction temperature?
At TJ = 125°C and IF = 1A, VF drops to 0.44V (typ), reducing conduction loss; IR rises to 4mA (max) at VR = 40V - still within safe operating limits for most 12V auxiliary rails with adequate filtering.
SBR1A40S1-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 520 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBR1A40S1-7 FAQ
1.How can I place an order for SBR1A40S1-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR1A40S1-7 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 SBR1A40S1-7 reliable?
The price and inventory of SBR1A40S1-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR1A40S1-7 is usually 5 days.
3.What payment methods are accepted for SBR1A40S1-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR1A40S1-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR1A40S1-7?
SBR1A40S1-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR1A40S1-7 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 SBR1A40S1-7?
For technical support, including SBR1A40S1-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR1A40S1-7 requirements.
6.How does Aetrix verify that SBR1A40S1-7 is sourced from the original manufacturer or authorized distributors?
All SBR1A40S1-7 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 SBR1A40S1-7 meets industry standards.
7.What is the process for return or replacement of SBR1A40S1-7?
All SBR1A40S1-7 units undergo pre-shipment inspection (PSI). If there is an issue with SBR1A40S1-7, 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 SBR1A40S1-7 part is unused and in its original packaging.
Return procedure for SBR1A40S1-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR1A40S1-7 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…
