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Diodes Incorporated 1N4448HLP-7B
- Part No.:
- 1N4448HLP-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- -
- Datasheet:
-
1N4448HLP-7B.pdf
- Description:
- DIODE GEN PURP 80V 125MA 2DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,717
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Product details
Overview
1N4448HLP-7B from Diodes Incorporated is a surface-mount fast-switching silicon switching diode in X1-DFN1006-2 package, rated for 80 V peak repetitive reverse voltage, 300 mA forward current, and 4.0 ns reverse recovery time. It delivers low forward voltage (0.72 V at 10 mA) and ultra-low reverse leakage (25 nA at 20 V), making it suitable for high-speed signal routing and clamping in portable battery-powered equipment.
For engineers reviewing the 1N4448HLP-7B datasheet, 1N4448HLP-7B pinout, 1N4448HLP-7B application, or 1N4448HLP-7B equivalent, key selection criteria include reverse recovery time, junction-to-ambient thermal resistance (500 °C/W), cathode marking configuration (bar), AEC-Q101 qualification, and DFN1006 footprint compatibility with space-constrained PCB layouts.
Technical Context
This diode operates as a unidirectional, low-capacitance (3.0 pF at 0.5 V) PN-junction switch optimized for high-frequency signal integrity. Its 4.0 ns trr and 0.72 V VF at 10 mA enable clean edge transitions in digital logic interfaces and sample-and-hold circuits.
The device uses NiPdAu-plated copper leadframe terminals and green molding compound (UL 94V-0), supporting reflow soldering per J-STD-020 Level 1 moisture sensitivity. Thermal derating begins at 25°C ambient, with full 250 mW power dissipation only at TA ≤ 25°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 80 V - Maximum repetitive reverse blocking capability without breakdown |
| IFM | 300 mA - Peak forward surge current handling before metallization failure |
| trr | 4.0 ns - Time to transition from forward conduction to reverse blocking under defined test conditions |
| VF @ 10 mA | 0.72 V - Forward voltage drop determining power loss and logic-level compatibility |
| IR @ 20 V | 25 nA - Reverse leakage current affecting standby power and signal isolation |
| CT @ 0.5 V | 3.0 pF - Junction capacitance limiting high-frequency bandwidth in RF or clock paths |
| RθJA | 500 °C/W - Thermal resistance defining temperature rise per watt on standard FR-4 layout |
Pinout & Package
Package: X1-DFN1006-2 - ultra-compact 1.0 mm × 0.6 mm × 0.5 mm molded plastic case with exposed thermal pad (no internal thermal slug), UL 94V-0 rated, moisture sensitivity Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Forward current entry terminal | Connected to lower-potential node in forward-biased operation; requires PCB trace capable of 300 mA peak |
| 2 (Cathode) | Forward current exit / reverse blocking terminal | Marked by bar on top surface; ties to higher-potential node or ground return path in clamping configurations |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress requirements |
| Ultra-fast trr = 4.0 ns | Enables use in >100 MHz digital signal conditioning without pulse distortion or ringing |
| Low IR = 25 nA @ 20 V | Minimizes quiescent current drain in battery-backed memory retention and sensor bias networks |
| Green, halogen-free construction | Complies with RoHS 3 (2015/863/EU) and contains <900 ppm Br, <900 ppm Cl, <1000 ppm Sb |
Applications
| High-Speed Logic Clamping | Portable Device ESD Protection |
|---|---|
Use Scenario: Preventing overshoot/undershoot in 3.3 V CMOS data lines interfacing between FPGA and ADC. IC Role / Device Role / Timing Role: Fast clamping diode shunting transients to VCC or GND rails during signal edge transitions. Use Value: 4.0 ns trr ensures clamping action completes before next logic edge, preserving timing margins. | Use Scenario: Secondary protection for USB 2.0 D+ and D− lines in handheld medical monitors. IC Role / Device Role / Timing Role: Low-capacitance (3.0 pF) shunt element diverting ESD pulses away from PHY inputs. Use Value: Sub-100 nA leakage avoids DC loading of high-impedance differential receivers. |
| Sample-and-Hold Circuit Discharge | Battery Voltage Monitoring |
Use Scenario: Rapid discharge path for hold capacitor after acquisition phase in precision analog front-ends. IC Role / Device Role / Timing Role: Low-VF (0.72 V @ 10 mA), low-trr switch enabling sub-10 ns discharge window. Use Value: Ensures hold capacitor resets fully before next sampling cycle, eliminating droop-induced offset. | Use Scenario: Reverse-polarity protection and voltage divider biasing in coin-cell–powered IoT sensors. IC Role / Device Role / Timing Role: Series-blocking diode with 80 V VRRM tolerating load-dump transients up to 60 V. Use Value: 25 nA IR at 20 V extends 10-year battery life by minimizing self-discharge current in always-on monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast-switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAT54C-7-F | Schottky structure; VF = 0.33 V @ 10 mA; trr not specified (inherently faster); VR = 30 V | Limited to ≤30 V systems; unsuitable for 48 V industrial bus monitoring | Select when lowest forward loss is critical and reverse voltage ≤30 V |
| 1N4148W-7-F | Same PN junction; VF = 0.72 V @ 10 mA; trr = 4.0 ns; SOD-123 package (1.8 mm × 1.4 mm) | 2.5× larger footprint; RθJA = 350 °C/W; not AEC-Q101 qualified | Select when board space allows larger package and automotive qualification is unnecessary |
Compared with BAT54C-7-F and 1N4148W-7-F, the 1N4448HLP-7B uniquely combines AEC-Q101 qualification, 80 V VRRM, and DFN1006 size-making it the only option for space-constrained, automotive-grade 5–48 V signal switching where both reliability and miniaturization are mandatory.
Availability
1N4448HLP-7B is available at Aetrix Electronics and suitable for high-volume portable electronics, automotive body control modules, and industrial sensor nodes requiring stable component supply, long-term lifecycle assurance, and RoHS 3 compliance.
Supply support for 1N4448HLP-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 and manufacturing operations across Asia and the Americas.
The 1N4448HLP belongs to Diodes' high-reliability fast-switching diode product line, engineered specifically for miniaturized, battery-sensitive applications demanding AEC-Q101 validation and consistent parametric performance across -65°C to +150°C.
FAQ
What is the cathode marking method for 1N4448HLP-7B?
The cathode is marked by a bar on the top surface of the X1-DFN1006-2 package. This differs from earlier date codes that used a dot marking. The bar aligns with pin 2, which is the cathode terminal, and must be oriented toward the PCB's higher-potential net in forward-bias applications.
Is 1N4448HLP-7B suitable for reflow soldering?
Yes-1N4448HLP-7B is qualified for lead-free reflow per J-STD-020 Level 1 moisture sensitivity. Its NiPdAu-plated terminals meet MIL-STD-202 Method 208 solderability requirements, and the green molding compound withstands peak reflow temperatures up to 260°C for ≤60 seconds.
How does thermal derating affect power handling?
Power dissipation must be linearly reduced above 25°C ambient: PD = 250 mW × (1 − (TA − 25)/125). At 85°C ambient, maximum allowable power drops to 100 mW. This reflects its 500 °C/W RθJA on standard FR-4 with recommended pad layout-not enhanced thermal pads.
Does 1N4448HLP-7B have a specified junction capacitance at zero bias?
No-datasheet specifies CT = 3.0 pF only at VR = 0.5 V, f = 1.0 MHz. Zero-bias capacitance is not characterized. For RF tuning or oscillator design, designers should measure or simulate Cj(VR) using the provided 0.5 V point and typical exponential voltage dependence of PN junctions.
1N4448HLP-7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- -
- Voltage - DC Reverse (Vr) (Max):
- -
- Current - Average Rectified (Io):
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Speed:
- -
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- -
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -
1N4448HLP-7B FAQ
1.How can I place an order for 1N4448HLP-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4448HLP-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 1N4448HLP-7B reliable?
The price and inventory of 1N4448HLP-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4448HLP-7B is usually 5 days.
3.What payment methods are accepted for 1N4448HLP-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4448HLP-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4448HLP-7B?
1N4448HLP-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4448HLP-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 1N4448HLP-7B?
For technical support, including 1N4448HLP-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4448HLP-7B requirements.
6.How does Aetrix verify that 1N4448HLP-7B is sourced from the original manufacturer or authorized distributors?
All 1N4448HLP-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 1N4448HLP-7B meets industry standards.
7.What is the process for return or replacement of 1N4448HLP-7B?
All 1N4448HLP-7B units undergo pre-shipment inspection (PSI). If there is an issue with 1N4448HLP-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 1N4448HLP-7B part is unused and in its original packaging.
Return procedure for 1N4448HLP-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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