CNCHIPDEPOT Original Part
LL4148
LL4148 is a switching diode in LL-34 package, designed for fast switching applications with compact size and reliable performance.
PackageSOD-80 (DO-213AC / MINI-MELF)
Reverse Voltage (VR)100V
Forward Current (IF)200mA
Reverse Recovery Time (TRR)4ns
TypeFast Switching Diode
ConfigurationSingle Diode
Product Overview
LL4148 is a switching diode in LL-34 package, designed for fast switching applications with compact size and reliable performance.
Specifications
Key electrical, package, and sourcing parameters for quick engineering review.
| Part Number | LL4148 |
| Brand | CNCHIPDEPOT |
| Package | LL-34 |
| Category | Discrete Semiconductor Products - Switching Diodes |
| Type | Fast Switching Diode |
| Configuration | Single Diode |
| Package / Case | DO-213AC, MINI-MELF, SOD-80 |
| Supplier Device Package | SOD-80 |
| Mounting Type | Surface Mount |
| Technology | Standard Silicon |
| Voltage - DC Reverse (VR) | 100V |
| Current - Average Rectified (IO) | 200mA |
| Forward Voltage (VF) | 1V Max. @ 10mA |
| Reverse Recovery Time (TRR) | 4ns |
| Reverse Leakage Current (IR) | 25nA @ 20V |
| Junction Capacitance | 4pF @ 0V, 1MHz |
| Speed | Small Signal ≤200mA |
| Operating Junction Temperature | -55°C to +175°C |
| Packaging | Tape & Reel (TR), Cut Tape (CT), Digi-Reel |
| Part Status | Active |
| RoHS Status | RoHS3 Compliant |
| REACH Status | REACH Unaffected |
| Product Type | switching diode |
Cross Reference & Replacement Information
The following part numbers are commonly reviewed for replacement or compatibility matching. Always verify datasheet, package, pinout, and operating conditions before bulk purchase.
| Target Brand | Target MPN | Replace Type | Notes |
|---|---|---|---|
| STMicroelectronics | 1N4148LL | Cross Reference | LL-34 package, check maximum reverse voltage and forward current. |
| Diodes Incorporated | 1N4148W | Possible Replacement | LL-34 package, ensure operating temperature range matches. |
| ON Semiconductor | 1N4148WS | Direct Replacement | Same electrical characteristics, LL-34 package. |
| Samsung Electro-Mechanics | SD143 | Compatible Alternative | LL-34 package, verify switching speed and leakage current. |
Datasheet
Download the datasheet or contact us for additional technical information.
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Typical Applications
- High-speed signal switching
- Digital logic circuits
- Pulse switching circuits
- Signal processing equipment
- Communication interfaces
- Low-power control circuits
- General-purpose small-signal switching
Ordering & RFQ Information
- MOQ: Contact sales
- Lead Time: 3–7 working days for stock items
- Packaging: Reel / Tube / Tray depending on package
- Sample Availability: Available on request
- Mass Production Status: 50K+ pcs Stock / Mass Production
FAQ
Can this part replace my current model?
It may be suitable depending on your circuit requirements. Please verify datasheet, package, pinout, and test samples before bulk orders.
Can I request samples?
Yes. Please submit your RFQ with target quantity and application details.
Need this part or a compatible replacement?
Send us your target part number, BOM list, quantity, and technical requirements. CNCHIPDEPOT can help review replacement options and provide RFQ support.
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As a China electronic component factory , China Chip Depot supports component sourcing, production, testing and quality inspection for global B2B buyers. We also provide Cross Reference Alternative Parts matching services to help engineers and procurement teams identify suitable component alternatives.
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Quality Inspection Lab
Quality inspection processes help verify component condition, specifications and production consistency before shipment.
SMT Assembly Workshop
SMT production and assembly capabilities supporting electronic component and PCB-related manufacturing requirements.
Semiconductor Production
Controlled production environments supporting semiconductor and electronic component manufacturing processes.
Component Testing Equipment
Electrical testing and verification equipment used to support performance checks and product consistency.
Quality Inspection Lab
Quality inspection processes help verify component condition, specifications and production consistency before shipment.