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Diodes Incorporated SDM02U30LP3-7B
- Part No.:
- SDM02U30LP3-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
SDM02U30LP3-7B.pdf
- Description:
- DIODE SCHOT 30V 100MA 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:65,282
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Product details
Overview
SDM02U30LP3-7B from Diodes Incorporated is an ultra-small surface-mount Schottky barrier diode with 30 V peak reverse voltage, 100 mA average forward current, 0.37 V max forward voltage at 10 mA, 7 µA max reverse leakage at 10 V, and X3-DFN0603-2 package (0.18 mm² footprint, 0.35 mm profile), used for reverse polarity protection in space-constrained portable electronics.
For engineers reviewing the SDM02U30LP3-7B datasheet, SDM02U30LP3-7B pinout, SDM02U30LP3-7B application, or SDM02U30LP3-7B equivalent, key selection criteria include ultra-low VF for battery efficiency, sub-0.4 mm profile for thin-profile designs, cathode-bar marking for orientation-critical PCB layouts, and 7 µA IR at 10 V for low-power hold-up circuits.
Technical Context
This Schottky diode employs a platinum-silicide or similar low-barrier metal-semiconductor junction to achieve forward voltage as low as 0.20 V at 10 mA and +125°C, enabling operation in thermally constrained environments. Its 0.35 mm maximum height and 0.18 mm² footprint are optimized for wearable and hearable device PCBs where vertical and planar real estate is severely limited.
The device exhibits 1 pF typical junction capacitance at 0 V and <10 pF up to 30 V reverse bias (f = 1 MHz), supporting high-frequency clamping and fast switching in backlight LED drivers and USB port protection. Thermal resistance of 500 °C/W (Junction-to-Ambient, FR-4 board) requires careful thermal pad design for sustained 100 mA operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Supports 24 V nominal systems with 25% margin for transient spikes |
| IO (AV) | 100 mA - Sustains continuous current for LED backlighting and sensor bias rails |
| VF (max) | 0.37 V @ 10 mA - Reduces power loss to ≤3.7 mW per diode in low-current paths |
| IR (max) | 7 µA @ 10 V - Limits standby current drain in battery-powered always-on circuits |
| Package | X3-DFN0603-2 - 0.62 mm × 0.32 mm footprint, 0.35 mm max height, cathode bar marking |
| RθJA | 500 °C/W - Requires minimal copper pour for thermal management at full rated current |
Pinout & Package
Encapsulated in the X3-DFN0603-2 package: two-terminal surface-mount device with exposed thermal pad (non-electrical), cathode identified by molded bar on top surface. No internal die attach pad connection; terminals are anode and cathode only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side in reverse polarity protection; must be routed with low-inductance trace for surge handling |
| Cathode | Forward current exit / reverse blocking terminal | Marked by molded bar; connects to load/rail side; critical for correct orientation during automated placement |
Key Features
| Feature | Design Value |
|---|---|
| 0.18 mm² footprint | 70% smaller than DFN1006/SOD923 - enables routing under fine-pitch BGAs and dense flex PCBs |
| 0.35 mm max profile | 30% thinner than DFN1006 - accommodates mechanical stack-ups in slim smartphones and TWS earbuds |
| 0.37 V VF (max) @ 10 mA | Minimizes conduction loss in 1.8–3.3 V rail protection - extends battery runtime in always-on sensors |
| 7 µA IR (max) @ 10 V | Reduces quiescent current in backup power paths - preserves charge in coin-cell–powered RTC circuits |
| Lead-free & Halogen-free | Complies with RoHS 3 and JEDEC J-STD-020 Level 1 - supports green manufacturing and reflow compatibility |
Applications
| Reverse Polarity Protection | LED Backlight Clamping |
|---|---|
Use Scenario: Preventing damage from incorrect battery insertion in Bluetooth trackers and medical wearables. IC Role / Device Role / Timing Role: Series-connected blocking diode on main power input rail. Use Value: 0.37 V VF ensures ≤3.7 mW loss at 10 mA, preserving >98% of battery energy in low-duty-cycle devices. |
Use Scenario: Suppressing inductive kickback from white LED strings in smartwatch displays. IC Role / Device Role / Timing Role: Freewheeling path across boost converter output during PWM off-time. Use Value: 1 pF junction capacitance minimizes signal distortion and EMI in 100–500 kHz PWM dimming circuits. |
| Keypad ESD Clamp | USB Port Blocking |
Use Scenario: Low-capacitance clamping of static discharge on membrane keypad traces in industrial handhelds. IC Role / Device Role / Timing Role: Bidirectional shunt clamp between signal line and ground. Use Value: Sub-10 pF capacitance avoids signal integrity degradation on 1–10 MHz keypad scan lines. |
Use Scenario: Isolating VBUS from downstream peripherals during hot-plug events in USB-C accessories. IC Role / Device Role / Timing Role: Reverse-biased blocking diode in VBUS path to prevent backfeed. Use Value: 30 V VRRM provides 2× margin over 5 V USB spec, while 7 µA IR prevents battery drain in sleep mode. |
Availability
SDM02U30LP3-7B is available at Aetrix Electronics and suitable for reverse polarity protection, LED backlighting, keypad clamping, and USB port isolation requiring stable component supply in high-volume portable electronics production.
Supply support for SDM02U30LP3-7B 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 SDM02U30LP3 belongs to Diodes' ultra-miniature Schottky diode product line, engineered specifically for space- and power-constrained applications in portable consumer electronics and wearables.
FAQ
What is the cathode identification method for SDM02U30LP3-7B?
The cathode is marked by a molded bar on the top surface of the X3-DFN0603-2 package. This bar aligns with the cathode terminal (pin 2) in the standard pinout. Visual inspection under 10× magnification confirms orientation, and automated optical inspection (AOI) systems use this bar for placement verification during SMT assembly.
Can SDM02U30LP3-7B replace SDM02U30LP3-7?
Yes - SDM02U30LP3-7B and SDM02U30LP3-7 share identical electrical specifications and X3-DFN0603-2 packaging. The "B" suffix denotes tape-and-reel packaging with 10,000 units per reel, while "-7" indicates the same reel quantity but may differ in carrier tape material or humidity sensitivity level per J-STD-020.
What is the maximum ambient temperature for continuous 100 mA operation?
At 100 mA DC, the SDM02U30LP3-7B reaches thermal equilibrium at approximately +85°C ambient when mounted on a standard FR-4 board with recommended pad layout. Derating curves show usable current drops to ~60 mA at +125°C ambient, consistent with its -65°C to +150°C operating range.
Is there an automotive-grade version of this diode?
Yes - the SDM02U30LP3Q is the AEC-Q101 qualified variant, tested for automotive applications including engine control modules and infotainment power supplies. It shares identical electrical parameters and package dimensions but includes extended temperature qualification (-40°C to +125°C TJ) and enhanced process controls per AEC requirements.
SDM02U30LP3-7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 0201 (0603 Metric)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 100mA
- Voltage - Forward (Vf) (Max) @ If:
- 370 mV @ 10 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 4 µA @ 30 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X3-DFN0603-2
- Operating Temperature - Junction:
- -65°C ~ 150°C
SDM02U30LP3-7B FAQ
1.How can I place an order for SDM02U30LP3-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for SDM02U30LP3-7B 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 SDM02U30LP3-7B reliable?
The price and inventory of SDM02U30LP3-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDM02U30LP3-7B is usually 5 days.
3.What payment methods are accepted for SDM02U30LP3-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDM02U30LP3-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDM02U30LP3-7B?
SDM02U30LP3-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDM02U30LP3-7B 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 SDM02U30LP3-7B?
For technical support, including SDM02U30LP3-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDM02U30LP3-7B requirements.
6.How does Aetrix verify that SDM02U30LP3-7B is sourced from the original manufacturer or authorized distributors?
All SDM02U30LP3-7B 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 SDM02U30LP3-7B meets industry standards.
7.What is the process for return or replacement of SDM02U30LP3-7B?
All SDM02U30LP3-7B units undergo pre-shipment inspection (PSI). If there is an issue with SDM02U30LP3-7B, 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 SDM02U30LP3-7B part is unused and in its original packaging.
Return procedure for SDM02U30LP3-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDM02U30LP3-7B Tags
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Diodes Incorporated
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