My Inquiry
My Account
Diodes Incorporated SDM10M45SD-7
- Part No.:
- SDM10M45SD-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- SOT-23-6
- Datasheet:
-
SDM10M45SD-7.pdf
- Description:
- DIODE ARR SCHOTT 45V 100MA SOT26
- Quantity:
- Payment:
- Shipping:
Inventory:7,136
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SDM10M45SD-7 from Diodes Incorporated is a surface-mount Schottky barrier diode rated for 45 V peak reverse voltage, 100 mA continuous forward current, and 1.0 A surge current, with typical forward voltage of 370 mV at 10 mA - used in low-power DC-DC converter output rectification and USB power path protection.
For engineers reviewing the SDM10M45SD-7 datasheet, SDM10M45SD-7 pinout, SDM10M45SD-7 application, or SDM10M45SD-7 equivalent, key selection criteria include ultra-low VF for efficiency-critical 3.3 V/5 V rail clamping, SOT-26 footprint compatibility with space-constrained portable designs, and <1 μA IR at 10 V for standby leakage-sensitive battery systems.
Technical Context
This Schottky diode employs a planar epitaxial construction to achieve fast switching (no minority-carrier storage delay) and low forward conduction loss. Its 6.0 pF junction capacitance at 10 V enables use in high-frequency (>1 MHz) switching node snubbing and ESD-tolerant I/O clamping.
The device operates across –40 °C to +125 °C ambient, with thermal resistance of 444 °C/W (junction-to-ambient on FR-5 PCB), limiting usable power dissipation to 225 mW at 25 °C - requiring derating above 25 °C per Fig. 4 and Fig. 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit for 36 V nominal bus clamping. |
| IFM | 100 mA - Continuous forward current rating; defines max steady-state load current without thermal runaway on standard PCB layout. |
| VF @ 10 mA | 370–450 mV - Low forward drop enables >95% efficiency in 3.3 V synchronous rectifier replacement applications. |
| IR @ 10 V | 0.07–1.0 μA - Ultra-low leakage preserves battery life in always-on sensor nodes and real-time clock backup circuits. |
| CT @ 10 V | 6.0 pF - Low junction capacitance minimizes high-frequency switching noise and signal distortion in data line protection. |
| RθJA | 444 °C/W - Thermal resistance measured on specified FR-5 pad layout; dictates minimum copper area needed for 125 °C junction temp at full IFM. |
Pinout & Package
Package: SOT-26 - ultra-small 6-pin surface-mount package (3.0 × 1.6 × 1.1 mm), molded green compound, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode 1 | First Schottky junction anode; connects to input/source side of dual-diode configuration. |
| 2 | Cathode 1 | First Schottky junction cathode; common cathode shared with Pin 3 in dual-common-cathode topology. |
| 3 | Cathode 2 | Second Schottky junction cathode; electrically tied to Pin 2 - forms dual common-cathode pair. |
| 4 | Anode 2 | Second Schottky junction anode; independent input path for dual-channel clamping or OR-ing. |
| 5 | No Connect | Internally unconnected; must remain floating or grounded per layout guidelines to avoid parasitic coupling. |
| 6 | No Connect | Internally unconnected; no electrical function - omitted from schematic symbol and netlist. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low forward voltage | 370 mV typ. at 10 mA - reduces conduction loss by >40% vs. standard silicon diodes in 3.3 V supply rails. |
| Dual common-cathode configuration | Pins 2 & 3 internally bonded - enables compact dual-rail clamping or redundant power-path OR-ing in single footprint. |
| SOT-26 package | 3.0 × 1.6 mm footprint - saves >60% board area vs. SOIC-8 while maintaining solder joint reliability per MIL-STD-202. |
| Lead-free / RoHS-compliant | Matte tin over copper leadframe - meets IPC-J-STD-020D Level 1 moisture sensitivity and eliminates Pb-based reflow concerns. |
Applications
| USB Power Switching | Low-Voltage OR-ing |
|---|---|
Use Scenario: Dual-input USB power selection (e.g., wall adapter + battery) with automatic source prioritization and reverse-current blocking. IC Role / Device Role: Dual common-cathode Schottky OR-ing diode providing bidirectional isolation and <1 μA leakage between sources. Use Value: Eliminates need for external MOSFET controllers; enables seamless switchover with <450 mV forward drop at 100 mA. | Use Scenario: Redundant 3.3 V supply rails in industrial PLC I/O modules where fault isolation is critical. IC Role / Device Role: Back-to-back Schottky clamp preventing cross-conduction during hot-swap events. Use Value: Prevents 100+ mA fault current propagation between rails using only two pins per channel (Anode/Cathode). |
| Portable Device Clamping | Signal Line Protection |
Use Scenario: Overvoltage clamping on lithium-ion battery charger IC inputs exposed to transient surges. IC Role / Device Role: Fast-response Schottky clamp shunting >40 V transients to ground before IC damage occurs. Use Value: 1.0 A surge rating withstands IEC 61000-4-5 Level 3 surges; 6 pF CT avoids signal integrity degradation on 10 MHz analog lines. | Use Scenario: ESD protection for UART/USB D+/D− lines in handheld medical sensors. IC Role / Device Role: Low-capacitance Schottky diode array routing ESD pulses to VCC/GND rails. Use Value: 6.0 pF capacitance ensures <0.5% signal attenuation at 12 MHz; <1 μA IR prevents baseline drift in precision ADC front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RB521S-40T2R | Single diode, 40 V VRRM, 200 mA IFM, SOD-523 package (1.2 × 0.8 mm) | Smaller footprint but no dual-diode integration; requires two devices for OR-ing. | Select when board area is more constrained than channel count, and discrete placement is acceptable. |
| NSR1030HT1G | Dual common-cathode, 30 V VRRM, 100 mA IFM, SOT-23-6 package, 450 mV VF min | Lower voltage rating limits use to ≤24 V systems; identical pinout but higher VF increases conduction loss. | Select for cost-sensitive 24 V automotive body electronics where 45 V margin is unnecessary. |
Compared with RB521S-40T2R and NSR1030HT1G, SDM10M45SD-7 uniquely delivers 45 V rating + dual common-cathode topology in SOT-26 - enabling single-component 36 V OR-ing and reducing BOM count by one device versus dual-SOD-523 solutions.
Availability
SDM10M45SD-7 is available at Aetrix Electronics and suitable for USB power management, portable battery protection, low-voltage OR-ing, and signal-line ESD clamping requiring stable component supply and RoHS-compliant sourcing.
Supply support for SDM10M45SD-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 centers across Asia and manufacturing in China, Taiwan, and the US.
The SDM series targets high-efficiency, space-constrained power management applications - specifically engineered for low-VF Schottky rectification in portable, USB, and battery-powered systems where thermal and leakage performance are critical.
FAQ
What is the maximum junction temperature for SDM10M45SD-7?
The SDM10M45SD-7 has an absolute maximum junction temperature of +125 °C. This is achieved with proper PCB thermal design - specifically using the Diodes Inc. recommended AP02001 pad layout on FR-5 material. Exceeding this temperature risks permanent parametric shift or bond-wire failure, especially under sustained 100 mA forward current at elevated ambient temperatures.
Is SDM10M45SD-7 suitable for reverse polarity protection?
Yes - its 45 V VRRM and 100 mA IFM make it suitable for low-current reverse polarity protection in 24 V and 36 V systems. When placed in series with the positive rail, it blocks reverse voltage up to 45 V while adding only ~400 mV dropout at rated current. However, for >100 mA loads, thermal derating must be applied per Fig. 5, and a MOSFET-based solution may offer lower loss.
Does SDM10M45SD-7 have a built-in ESD protection structure?
No - SDM10M45SD-7 is not rated for IEC 61000-4-2 ESD immunity. It functions as a passive clamping diode when externally biased, but lacks integrated ESD protection circuitry. For dedicated ESD protection, Diodes Inc. recommends pairing it with TVS diodes like D3V3M1U2LP or using purpose-built ESD arrays such as D3V3Z5U2LP.
Can SDM10M45SD-7 replace a standard 1N5819 in existing designs?
Only in footprint-compatible layouts - SDM10M45SD-7 uses SOT-26 (6-pin), whereas 1N5819 is DO-41 or SOD-123. Electrically, it offers lower VF (370 mV vs. 450–600 mV) and faster switching, but its dual-diode configuration requires circuit redesign to utilize both channels or terminate unused pins correctly. Direct drop-in replacement is not possible without PCB revision.
SDM10M45SD-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Diode Configuration:
- 2 Pair Series Connection
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 100mA (DC)
- Voltage - Forward (Vf) (Max) @ If:
- 450 mV @ 10 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10 V
- Operating Temperature - Junction:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-26
SDM10M45SD-7 FAQ
1.How can I place an order for SDM10M45SD-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SDM10M45SD-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 SDM10M45SD-7 reliable?
The price and inventory of SDM10M45SD-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDM10M45SD-7 is usually 5 days.
3.What payment methods are accepted for SDM10M45SD-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDM10M45SD-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDM10M45SD-7?
SDM10M45SD-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDM10M45SD-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 SDM10M45SD-7?
For technical support, including SDM10M45SD-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDM10M45SD-7 requirements.
6.How does Aetrix verify that SDM10M45SD-7 is sourced from the original manufacturer or authorized distributors?
All SDM10M45SD-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 SDM10M45SD-7 meets industry standards.
7.What is the process for return or replacement of SDM10M45SD-7?
All SDM10M45SD-7 units undergo pre-shipment inspection (PSI). If there is an issue with SDM10M45SD-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 SDM10M45SD-7 part is unused and in its original packaging.
Return procedure for SDM10M45SD-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDM10M45SD-7 Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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…
