My Inquiry
My Account
Diodes Incorporated SDM1L40P1-7
- Part No.:
- SDM1L40P1-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- POWERDI®123
- Datasheet:
-
SDM1L40P1-7.pdf
- Description:
- DIODE SCHOTTKY 40V 1A PWRDI123
- Quantity:
- Payment:
- Shipping:
Inventory:5,853
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SDM1L40P1-7 from Diodes Incorporated is a 40 V, 1.0 A surface-mount Schottky barrier rectifier in PowerDI123 package, featuring 0.45 V max forward voltage at 1.0 A and 0.1 mA max reverse leakage at 40 V and +25°C. It delivers high surge current capacity (60 A IFSM), low thermal resistance (5 °C/W junction-to-case), and is qualified for automotive polarity protection and recirculating diode applications.
For engineers reviewing the SDM1L40P1-7 datasheet, SDM1L40P1-7 pinout, SDM1L40P1-7 application, or SDM1L40P1-7 equivalent, key selection criteria include its 40 V VRWM rating, 1.0 A IF(AV) at +120°C case temperature, 60 A non-repetitive surge capability, RoHS-compliant matte tin finish, and PowerDI123 mechanical compatibility with space-constrained automotive PCB layouts.
Technical Context
This Schottky rectifier employs guard ring die construction to enhance transient immunity and uses a patented interlocking clip design to sustain 60 A single-half-sine surge current. Its low VF (0.45 V max @ 1.0 A, +25°C) and low RθJC (5 °C/W) enable efficient power conversion in compact automotive modules.
Designed specifically for harsh-environment automotive use, it meets stringent requirements for polarity protection and flyback energy recirculation in DC/DC converters and motor drivers. The device operates across –55°C to +150°C storage range and maintains <0.1 mA IR at 40 V reverse bias and +25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 40 V - Maximum working reverse voltage before breakdown; sets safe operating limit in 12 V/24 V automotive systems. |
| IF(AV) | 1.0 A @ TT = +120°C - Continuous forward current rating under real-world thermal conditions on PCB. |
| VF Max | 0.45 V @ IF = 1.0 A, TJ = +25°C - Low conduction loss enabling >92% efficiency in low-voltage rectification. |
| IR Max | 0.1 mA @ VR = 40 V, TJ = +25°C - Minimal leakage preserves battery standby life in always-on vehicle modules. |
| IFSM | 60 A, 8.3 ms half-sine - Withstands inductive kickback surges from solenoids, relays, and brushed motors. |
| RθJC | 5 °C/W - Enables direct heat transfer to copper pad; supports high-power density layout without heatsink. |
| Package | PowerDI123 - Surface-mount, 3-pin (anode/cathode/thermal pad), footprint-compatible with SOD-123 but higher current rated. |
Pinout & Package
SDM1L40P1-7 is housed in the PowerDI123 package: a thermally enhanced, lead-free, halogen-free molded plastic case (UL 94V-0), weighing 0.096 g, with matte tin–annealed copper leadframe terminals. Cathode identified by band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Forward current entry | Connected to input/source side; accepts up to 1.0 A continuous current with minimal voltage drop. |
| Cathode (Pin 2) | Forward current exit / reverse blocking terminal | Marked with cathode band; blocks up to 40 V reverse voltage while limiting leakage to ≤0.1 mA. |
| Thermal Pad (Pin 3) | Thermal conduction path | Exposed copper pad beneath die; provides primary heat path to PCB copper area (RθJA = 60 °C/W on 1″² 2 oz Cu). |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and transient robustness per ISO 16750-2, critical for unprotected automotive power rails. |
| Interlocking clip design | Enables 60 A surge rating without bond wire failure-essential for relay coil snubbing and motor commutation. |
| Low VF (0.45 V max) | Reduces power dissipation to ≤450 mW at 1.0 A, minimizing thermal stress in sealed ECUs. |
| RoHS & "Green" compliant | Meets EU Directive 2011/65/EU and contains <900 ppm Br/Cl, <1000 ppm Sb-required for global automotive OEM sourcing. |
| Moisture Sensitivity Level 1 | Eliminates bake requirement prior to reflow; supports standard SMT assembly without process modification. |
Applications
| Body Control Module (BCM) | Automotive Lighting Driver |
|---|---|
Use Scenario: Reverse-polarity protection on 12 V supply rail feeding microcontroller and CAN transceiver. IC Role / Device Role / Timing Role: Polarity protection diode placed upstream of LDOs and logic ICs. Use Value: Prevents catastrophic damage during battery jump-start misconnection; withstands 60 A surge without failure. | Use Scenario: Recirculating diode across LED string driver MOSFET in adaptive front-lighting system. IC Role / Device Role / Timing Role: Freewheeling path for inductive current when PWM gate signal turns off. Use Value: Limits voltage spike to ≤40 V, protecting 40 V-rated driver FET; 0.45 V VF minimizes power loss during 100% duty cycle. |
| Engine Control Unit (ECU) Solenoid Interface | 12 V DC/DC Converter Output Stage |
Use Scenario: Flyback suppression for fuel injector solenoid coil driven by low-side N-channel MOSFET. IC Role / Device Role / Timing Role: Switching diode providing fast turn-off path for stored magnetic energy. Use Value: 63 pF typical capacitance ensures minimal switching delay; 0.1 mA IR avoids parasitic drain in sleep mode. | Use Scenario: Output rectifier in synchronous buck converter supplying 5 V/3.3 V to infotainment SoC. IC Role / Device Role / Timing Role: Secondary-side Schottky rectifier replacing synchronous MOSFET for cost-sensitive design. Use Value: 5 °C/W RθJC allows direct thermal coupling to ground plane, maintaining <100°C junction temp at full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB140-TB | Same 40 V VRWM, 1.0 A IF(AV), but SOD-123 package; RθJA = 120 °C/W vs. 60 °C/W. | Limited to lower ambient temperatures due to higher thermal resistance; unsuitable for under-hood ECU use. | Select only if board space is constrained and thermal budget permits ≥20°C derating. |
| SS14-E3/5AT | 40 V VRWM, 1.0 A IF(AV), SMA package; VF = 0.5 V max (vs. 0.45 V); IFSM = 30 A (vs. 60 A). | Lower surge margin reduces reliability in solenoid or motor drive recirculation paths. | Acceptable for non-critical lighting or sensor supply rails where surge events are rare. |
Compared with SB140-TB and SS14-E3/5AT, SDM1L40P1-7 offers superior thermal performance (RθJC = 5 °C/W), higher surge robustness (60 A), and lower conduction loss-making it the preferred choice for automotive under-hood and high-reliability power management.
Availability
SDM1L40P1-7 is available at Aetrix Electronics and suitable for automotive body control modules, engine control units, and LED lighting drivers requiring stable component supply, AEC-Q101 alignment, and long-term production continuity.
Supply support for SDM1L40P1-7 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, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The PowerDI® rectifier product line delivers thermally optimized, AEC-Q101–qualified Schottky diodes engineered for automotive power management, including polarity protection, flyback suppression, and DC/DC output rectification.
FAQ
Is SDM1L40P1-7 AEC-Q101 qualified?
No official AEC-Q101 qualification is stated in DS39463 Rev. 2–2. However, its construction (guard ring die, interlocking clip), operating temperature range (–55°C to +150°C), and automotive-targeted applications indicate design alignment with AEC-Q101 stress test profiles. Customers requiring formal qualification must consult Diodes Incorporated's latest compliance documentation.
What is the maximum PCB copper area needed for thermal performance?
Per datasheet Note 5, thermal resistance junction-to-ambient (RθJA = 60 °C/W) is specified with a 1 inch² (645 mm²) 2 oz copper pad. Reducing pad area increases RθJA linearly; for 0.5 inch², expect ~90 °C/W. Thermal simulation or empirical testing is recommended for layouts deviating from this reference.
Can SDM1L40P1-7 replace a standard PN junction rectifier in automotive 12 V circuits?
Yes-its 0.45 V forward voltage (vs. ~0.7–1.1 V for PN diodes) reduces conduction loss by ~40%, lowering heat generation and improving efficiency. It also enables faster switching, making it ideal for recirculation and polarity protection where reverse recovery time matters. Ensure VRWM ≥ circuit peak voltage.
Does the PowerDI123 package require special stencil or reflow profile?
No. The PowerDI123 uses standard matte tin–annealed terminals compatible with SnPb and lead-free solder. Reflow follows J-STD-020 Level 1 moisture sensitivity-no pre-bake required. Recommended stencil aperture matches pad layout in Diodes' package outline document (PN: AP02004).
SDM1L40P1-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- POWERDI®123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 450 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 40 V
- Capacitance @ Vr, F:
- 63pF @ 10V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
- Operating Temperature - Junction:
- -
SDM1L40P1-7 FAQ
1.How can I place an order for SDM1L40P1-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SDM1L40P1-7 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 SDM1L40P1-7 reliable?
The price and inventory of SDM1L40P1-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDM1L40P1-7 is usually 5 days.
3.What payment methods are accepted for SDM1L40P1-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDM1L40P1-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDM1L40P1-7?
SDM1L40P1-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDM1L40P1-7 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 SDM1L40P1-7?
For technical support, including SDM1L40P1-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDM1L40P1-7 requirements.
6.How does Aetrix verify that SDM1L40P1-7 is sourced from the original manufacturer or authorized distributors?
All SDM1L40P1-7 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 SDM1L40P1-7 meets industry standards.
7.What is the process for return or replacement of SDM1L40P1-7?
All SDM1L40P1-7 units undergo pre-shipment inspection (PSI). If there is an issue with SDM1L40P1-7, 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 SDM1L40P1-7 part is unused and in its original packaging.
Return procedure for SDM1L40P1-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDM1L40P1-7 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…
