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Nexperia USA Inc. PMLL4448,115
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- Part No.:
- PMLL4448,115
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Diodes
- Package:
- DO-213AC, MINI-MELF, SOD-80
- Datasheet:
-
PMLL4448,115.pdf
- Description:
- DIODE GEN PURP 75V 200MA LLDS
- Quantity:
- Payment:
- Shipping:
Inventory:11,038
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Product details
Overview
PMLL4448,115 from Nexperia is a single high-speed switching diode in a hermetically sealed glass SOD80C package, designed for fast signal routing and polarity protection. It delivers 620–720 mV forward voltage at 5 mA, ≤4 ns reverse recovery time, and supports 75 V reverse voltage and 450 mA repetitive peak forward current - deployed in DC-DC converter flyback snubbers and USB port protection circuits.
For engineers reviewing the PMLL4448,115 datasheet, PMLL4448,115 pinout, PMLL4448,115 application, or PMLL4448,115 equivalent, key selection criteria include trr ≤4 ns performance under IF=10 mA → IR=60 mA switching, VF matching at low-current bias (5 mA), and SOD80C thermal resistance (Rth(j-a) = 350 K/W) for compact board layouts.
Technical Context
The PMLL4448,115 uses planar silicon technology to achieve sub-4 ns reverse recovery by minimizing minority carrier lifetime and junction capacitance (Cd = 4 pF at VR = 0 V, f = 1 MHz). Its cathode-anode configuration enables unidirectional conduction with sharp turn-off characteristics critical for high-frequency rectification.
Thermal design relies on its SOD80C package's low Rth(j-sp) of 300 K/W to solder point, allowing sustained 200 mA forward current at +125 °C ambient when mounted on FR4 with standard footprint. Junction temperature is rated to 200 °C, supporting operation in thermally constrained industrial power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| trr | ≤4 ns - Enables clean switching up to ~100 MHz in clamping and snubber circuits without tail current overshoot. |
| VF @ 5 mA | 620–720 mV - Low forward drop preserves efficiency in low-current bias networks like logic-level signal clamping. |
| VRRM | 100 V - Supports transient suppression in 48 V industrial bus lines and automotive accessory circuits. |
| IFRM | 450 mA - Handles pulsed loads in relay drivers and LED current-steering paths without derating. |
| Cd @ 0 V | 4 pF - Minimizes capacitive loading on high-impedance nodes such as oscillator feedback paths or RF detector inputs. |
| Rth(j-a) | 350 K/W - Limits junction rise to <100 °C at 150 mW dissipation in free-air, enabling use without heatsinking in space-constrained modules. |
Pinout & Package
Encapsulated in a hermetically sealed glass SOD80C surface-mount package (3.3–3.7 mm length × 1.45–1.60 mm width × 0.3 mm height), the device uses a two-terminal axial geometry with cathode identified by a visible band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to circuit ground or lower-potential node; polarity marker band aligns with PCB silkscreen 'K' or '−'. |
| 2 | Anode | Connected to input/source side; reverse-biased during normal operation to block leakage in protection topologies. |
Key Features
| Feature | Design Value |
|---|---|
| High-speed switching | trr ≤4 ns ensures minimal dead-time loss in synchronous rectifier gate-drive snubbers and PWM edge detection. |
| Hermetic glass SMD package | SOD80C construction prevents moisture ingress and maintains parameter stability over 10+ year deployments in telecom infrastructure. |
| Low VF at microamp bias | 620–720 mV at 5 mA enables accurate voltage clamping in precision analog front-ends without loading sensor outputs. |
| High VRRM/VR ratio | 100 V / 75 V rating allows safe margin against 60 V transients in 48 V PoE injectors and industrial PLC I/O modules. |
Applications
| USB Port Polarity Protection | DC-DC Converter Snubber |
|---|---|
Use Scenario: Preventing damage from reversed VBUS insertion in Type-A and Type-C downstream ports. IC Role / Device Role / Timing Role: Unidirectional blocking element placed in series with VBUS line; conducts only during correct plug orientation. Use Value: 75 V VR rating covers USB PD 3.0 48 V negotiation spikes; 4 pF capacitance avoids signal integrity degradation on SuperSpeed lanes. |
Use Scenario: Suppressing voltage spikes across MOSFET drains in buck-boost converters operating above 500 kHz. IC Role / Device Role / Timing Role: Fast-recovery clamp diode in RCD snubber network; resets energy stored in transformer leakage inductance. Use Value: ≤4 ns trr ensures full energy transfer before next switching cycle; 450 mA IFRM handles peak snubber currents without thermal runaway. |
| Logic-Level Signal Clamping | Industrial Sensor Interface Protection |
Use Scenario: Limiting input voltage excursions on 3.3 V microcontroller GPIO pins exposed to external sensors. IC Role / Device Role / Timing Role: Low-VF shunt clamp referenced to MCU VDD; conducts when Vin exceeds VDD + VF. Use Value: 620–720 mV VF at 5 mA provides precise 3.9–4.0 V clamping threshold; 25 nA IR at 20 V minimizes standby leakage. |
Use Scenario: Guarding 4–20 mA current-loop receiver inputs against field-wiring faults and ESD events. IC Role / Device Role / Timing Role: Reverse-polarity guard diode placed across loop terminals; blocks reverse current while passing normal loop current. Use Value: 200 °C Tj rating supports operation in enclosures exceeding +85 °C ambient; 350 K/W Rth(j-a) enables direct PCB mounting without thermal vias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4148W-7-F | VF = 720–1000 mV @ 10 mA; trr = 4 ns; same SOD-123 package but plastic encapsulation. | Lacks hermetic seal; higher IR (25 nA vs. 3 μA at 100 °C) limits high-temp reliability in sealed enclosures. | Prefer for cost-sensitive consumer designs where long-term moisture resistance is non-critical. |
| BAS16,215 | VF = 850 mV @ 50 mA; trr = 4 ns; SOT-23 package with 3x footprint area and higher Rth(j-a) = 400 K/W. | Requires larger PCB area; thermal derating needed above 100 mA in enclosed environments. | Choose when existing layout uses SOT-23 footprints and board space permits thermal margin trade-off. |
Compared with 1N4148W-7-F and BAS16,215, the PMLL4448,115 offers superior long-term parameter stability via hermetic glass packaging and optimized low-current VF - critical for precision clamping and high-reliability industrial interfaces.
Availability
PMLL4448,115 is available at Aetrix Electronics and suitable for USB power delivery protection, DC-DC snubber networks, logic-level clamping, and 4–20 mA loop guarding requiring stable component supply across multi-year production cycles.
Supply support for PMLL4448,115 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
Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.
The PMLL4448,115 belongs to Nexperia's high-speed switching diode product line, engineered specifically for signal integrity preservation and robust transient handling in power management and interface protection circuits.
FAQ
What is the maximum continuous forward current for PMLL4448,115?
The maximum continuous forward current (IF) is 200 mA at Tamb = 25 °C, derated linearly to zero at +200 °C junction temperature. This rating assumes mounting on an FR4 PCB with single-sided copper and standard SOD80C footprint per Nexperia's thermal test conditions.
Does PMLL4448,115 meet automotive qualification standards?
No - PMLL4448,115 is not automotive-qualified. It is specified for industrial and commercial applications only. Nexperia explicitly states in its legal disclaimers that non-automotive qualified products are unsuitable for safety-critical or life-support systems.
How does the SOD80C package affect PCB assembly yield?
The SOD80C's small hermetic glass body (3.5 mm × 1.5 mm) requires precise stencil aperture control (0.90 mm solder land width) and reflow profile tuning to avoid tombstoning. Its thermal mass is lower than plastic SMD diodes, reducing risk of cold joints but increasing sensitivity to uneven heating.
Can PMLL4448,115 replace PMLL4148L in existing designs?
Yes - both share identical SOD80C package, pinout, and limiting values (VRRM, IFRM, trr), but PMLL4448 has lower VF (620–720 mV @ 5 mA) versus PMLL4148L (≤1 V @ 50 mA), making it preferable for low-current bias applications where forward drop directly impacts accuracy.
PMLL4448,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- -
- Package/Case:
- DO-213AC, MINI-MELF, SOD-80
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 75 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 100 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 4 ns
- Current - Reverse Leakage @ Vr:
- 25 nA @ 20 V
- Capacitance @ Vr, F:
- 4pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- LLDS; MiniMelf
- Operating Temperature - Junction:
- 200°C (Max)
PMLL4448,115 FAQ
1.How can I place an order for PMLL4448,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for PMLL4448,115 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 PMLL4448,115 reliable?
The price and inventory of PMLL4448,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PMLL4448,115 is usually 5 days.
3.What payment methods are accepted for PMLL4448,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PMLL4448,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PMLL4448,115?
PMLL4448,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PMLL4448,115 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 PMLL4448,115?
For technical support, including PMLL4448,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PMLL4448,115 requirements.
6.How does Aetrix verify that PMLL4448,115 is sourced from the original manufacturer or authorized distributors?
All PMLL4448,115 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 PMLL4448,115 meets industry standards.
7.What is the process for return or replacement of PMLL4448,115?
All PMLL4448,115 units undergo pre-shipment inspection (PSI). If there is an issue with PMLL4448,115, 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 PMLL4448,115 part is unused and in its original packaging.
Return procedure for PMLL4448,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PMLL4448,115 Tags
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