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Diodes Incorporated 1N4448HWS-13-F
- Part No.:
- 1N4448HWS-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
1N4448HWS-13-F.pdf
- Description:
- DIODE GEN PURP 80V 250MA SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:16,859
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Product details
Overview
1N4448HWS-13-F from Diodes Incorporated is a surface-mount fast-switching silicon signal diode in SOD323 package, rated for 80 V peak repetitive reverse voltage, 500 mA forward current, and 4.0 ns reverse recovery time. It delivers high conductance with 0.72 V forward voltage at 10 mA and supports general-purpose switching in compact board space-constrained designs.
For engineers reviewing the 1N4448HWS-13-F datasheet, 1N4448HWS-13-F pinout, 1N4448HWS-13-F application, or 1N4448HWS-13-F equivalent, key selection criteria include reverse recovery speed, junction capacitance (≤3.5 pF), thermal resistance (625 °C/W), RoHS/Green compliance, and SOD323 footprint compatibility with high-density PCB layouts.
Technical Context
This diode operates as a unidirectional, low-capacitance switching element optimized for high-speed digital and analog signal routing. Its 4.0 ns trr and 3.5 pF CT enable clean edge transitions in pulse shaping, clamping, and logic-level translation circuits up to ~100 MHz.
The device uses an alloy-42 leadframe with matte tin plating and is qualified to J-STD-020 Level 1 moisture sensitivity. Thermal derating begins above +25°C ambient, with full 200 mW power dissipation only at TA ≤ +25°C per the published curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRMS | 57 V - defines maximum continuous AC reverse voltage before breakdown in rectifier or clamp roles |
| IF | 500 mA - peak non-repetitive forward current capability for transient surge handling |
| VF @ 10 mA | 0.72 V - ensures low conduction loss in logic interface and level-shifting applications |
| trr | 4.0 ns - enables reliable operation in >10 MHz switching circuits without tail current distortion |
| CT @ 0 V | 3.5 pF - minimizes signal coupling and timing skew in RF detector and sample-hold paths |
| RθJA | 625 °C/W - requires careful thermal pad layout on FR-4 to sustain rated power above ambient +25°C |
| TJ Range | –55 to +150 °C - supports industrial and automotive under-hood environments without derating |
Pinout & Package
Package: SOD323 - ultra-compact 2-pin surface-mount plastic case (1.30 mm × 1.70 mm × 0.90 mm), cathode indicated by band marking on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node in forward-biased switching path; requires trace width sufficient for 500 mA peak |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Must be routed to higher-potential node; band orientation verified during automated optical inspection (AOI) |
Key Features
| Feature | Design Value |
|---|---|
| Fast switching speed | 4.0 ns reverse recovery time enables use in 10–50 MHz clocked signal routing |
| Low junction capacitance | 3.5 pF at 0 V allows minimal loading on high-impedance nodes in RF front-ends |
| High conductance | 0.72 V VF @ 10 mA reduces voltage drop in logic-level translation between 3.3 V and 5 V domains |
| Green, lead-free construction | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb) meets IEC 61249-2-21 |
| SOD323 footprint | Standardized 0.65 mm pitch, compatible with reflow profiles for fine-pitch passive assembly |
Applications
| Logic-Level Translation | Signal Clamping |
|---|---|
Use Scenario: Bidirectional level shifting between 3.3 V microcontroller GPIO and 5 V peripheral bus lines. IC Role / Device Role / Timing Role: Signal diode used in passive clamp configuration to limit voltage excursions beyond supply rails. Use Value: 0.72 V forward drop and 4.0 ns trr prevent data corruption during fast edge transitions while maintaining rail integrity. | Use Scenario: Protecting ADC input pins from ESD-induced overvoltage during sensor interface. IC Role / Device Role / Timing Role: Fast-acting shunt clamp that conducts transient energy before damage threshold is exceeded. Use Value: 3.5 pF capacitance avoids signal distortion; 80 V VRWM provides margin against 24 V system transients. |
| Pulse Shaping | High-Speed Rectification |
Use Scenario: Edge sharpening of TTL-compatible clock signals in FPGA clock distribution networks. IC Role / Device Role / Timing Role: Series-connected switching diode to remove negative undershoot and control rise/fall symmetry. Use Value: 4.0 ns trr preserves sub-10 ns pulse fidelity; low VF minimizes DC offset accumulation. | Use Scenario: Peak detection in 10–20 MHz RF envelope detectors for wireless sensor receivers. IC Role / Device Role / Timing Role: Low-capacitance rectifier converting RF carrier amplitude into baseband DC voltage. Use Value: 3.5 pF CT prevents detuning of LC tank; 500 mA IF handles burst-mode peak currents. |
Availability
1N4448HWS-13-F is available at Aetrix Electronics and suitable for logic-level translation, signal clamping, pulse shaping, and high-speed rectification requiring stable component supply across industrial control, test instrumentation, and consumer electronics production.
Supply support for 1N4448HWS-13-F 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 1N4448HWS belongs to Diodes' general-purpose fast-switching diode product line, engineered for high-volume, cost-sensitive applications demanding consistent switching performance, small footprint, and full environmental compliance.
FAQ
What is the maximum operating temperature for 1N4448HWS-13-F?
The device supports junction temperatures from –55°C to +150°C. At ambient temperatures above +25°C, power dissipation must be linearly derated per Figure 1 in the datasheet-e.g., at +85°C ambient, maximum allowable PD drops to 120 mW. The SOD323 package's thermal resistance (625 °C/W) mandates adherence to recommended pad layout for effective heat transfer.
Is 1N4448HWS-13-F suitable for automotive applications?
The standard 1N4448HWS-13-F is not AEC-Q101 qualified. For automotive use, Diodes specifies the 1N4448HWSQ-13-F variant, which undergoes additional change control, PPAP documentation, and is manufactured in IATF16949-certified facilities. Electrical specs are identical, but qualification status and traceability differ.
How does the 1N4448HWS-13-F compare to the 1N4148WS?
Both are SOD323 fast-switching diodes, but 1N4448HWS offers tighter VF specification (0.62–0.72 V @ 5–10 mA vs. 0.72–1.0 V for 1N4148WS), lower typical trr (4.0 ns vs. 4–8 ns), and enhanced Green compliance (halogen/antimony limits). The 1N4448HWS also features improved high-temperature IR stability per datasheet Table 3.
Can 1N4448HWS-13-F replace through-hole 1N4448 in existing designs?
Yes, functionally-both share identical electrical ratings-but the SOD323 package requires PCB redesign: land pattern differs (0.65 mm pitch vs. axial leads), thermal and mechanical mounting changes apply, and reflow profile must match JEDEC Level 1. No circuit modification is needed if layout accommodates the smaller footprint and polarity marking.
1N4448HWS-13-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 80 V
- Current - Average Rectified (Io):
- 250mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 150 mA
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 4 ns
- Current - Reverse Leakage @ Vr:
- 100 nA @ 80 V
- Capacitance @ Vr, F:
- 3.5pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- -65°C ~ 150°C
1N4448HWS-13-F FAQ
1.How can I place an order for 1N4448HWS-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4448HWS-13-F 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 1N4448HWS-13-F reliable?
The price and inventory of 1N4448HWS-13-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4448HWS-13-F is usually 5 days.
3.What payment methods are accepted for 1N4448HWS-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4448HWS-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4448HWS-13-F?
1N4448HWS-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4448HWS-13-F 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 1N4448HWS-13-F?
For technical support, including 1N4448HWS-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4448HWS-13-F requirements.
6.How does Aetrix verify that 1N4448HWS-13-F is sourced from the original manufacturer or authorized distributors?
All 1N4448HWS-13-F 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 1N4448HWS-13-F meets industry standards.
7.What is the process for return or replacement of 1N4448HWS-13-F?
All 1N4448HWS-13-F units undergo pre-shipment inspection (PSI). If there is an issue with 1N4448HWS-13-F, 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 1N4448HWS-13-F part is unused and in its original packaging.
Return procedure for 1N4448HWS-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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