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Diodes Incorporated 1N4148WSQ-13-F
- Part No.:
- 1N4148WSQ-13-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SC-76, SOD-323
- Datasheet:
-
1N4148WSQ-13-F.pdf
- Description:
- DIODE GP 75V 150MA SOD323 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:4,958
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Product details
Overview
1N4148WSQ-13-F from Diodes Incorporated is an AEC-Q101 qualified surface-mount fast switching diode in SOD323 package, rated for 75 V peak repetitive reverse voltage, 300 mA forward current, and 4.0 ns reverse recovery time. It serves as a general-purpose high-speed signal routing and clamping device in automotive infotainment power sequencing, USB data line protection, and logic-level translation circuits.
For engineers reviewing the 1N4148WSQ-13-F datasheet, 1N4148WSQ-13-F pinout, 1N4148WSQ-13-F application, or 1N4148WSQ-13-F equivalent, this page delivers verified electrical parameters, automotive qualification status, thermal derating behavior, SOD323 mechanical dimensions, and validated alternatives for production-grade design-in.
Technical Context
This diode implements a planar epitaxial silicon junction structure optimized for low capacitance (2.0 pF at 0 V) and rapid carrier recombination, enabling sub-5 ns reverse recovery under 10 mA IF/IR test conditions. Its 625 °C/W junction-to-ambient thermal resistance reflects FR-4 PCB mounting with 1-inch² 2 oz copper pad.
The device operates across –55 °C to +150 °C, with leakage current tightly controlled: ≤1.0 µA at 75 V and 25 °C, rising to ≤50 µA at 75 V and 150 °C. Forward voltage is specified at multiple current levels-0.715 V @ 1 mA, 0.855 V @ 10 mA-to support accurate voltage-drop modeling in low-power logic interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Repetitive Reverse Voltage | 75 V - supports 24 V automotive supply rail transient suppression without breakdown |
| Reverse Recovery Time | 4.0 ns - enables reliable operation in >100 MHz digital signal clamping and sampling circuits |
| Total Capacitance | 2.0 pF @ 0 V - minimizes signal distortion in high-frequency data line protection (e.g., USB 2.0) |
| Forward Voltage | 0.855 V @ 10 mA - ensures predictable voltage drop in level-shifting and biasing networks |
| Thermal Resistance θJA | 625 °C/W - defines safe operating area on standard FR-4 layout; derates linearly above 25 °C ambient |
| Operating Temperature | –55 °C to +150 °C - certified for under-hood automotive environments per AEC-Q101 stress testing |
Pinout & Package
Package: SOD323 - ultra-compact 1.30 mm × 1.70 mm surface-mount plastic case with cathode band marking; moisture sensitivity level 1 (J-STD-020), lead-free matte tin plating over Alloy 42 leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential node in clamping or steering configurations |
| Cathode | Current exit point during forward conduction; marked by band | Connected to higher-potential node or ground reference in protection circuits |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use with PPAP capability and IATF16949 manufacturing |
| Green compound packaging | Halogen- and antimony-free molding compound meeting <900 ppm Br/Cl and <1000 ppm Sb limits |
| Low leakage at high temperature | ≤50 µA IR at 75 V and +150 °C - maintains signal integrity in hot under-hood locations |
| Fast switching with low CT | 4.0 ns tRR + 2.0 pF CT - enables clean edge handling in 50+ MHz clock/data lines |
Applications
| Automotive Power Sequencing | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Controlling startup order of ADAS camera module power rails (12 V, 5 V, 1.8 V) using discrete OR-ing and enable logic. IC Role / Device Role / Timing Role: Fast-switching clamp diode isolating enable signals between domains while preventing backfeed. Use Value: 4.0 ns tRR prevents shoot-through during rail transitions; 75 V VR withstands load-dump transients. | Use Scenario: ESD and overvoltage protection on D+ and D− lines of automotive USB host ports. IC Role / Device Role / Timing Role: Low-capacitance steering diode shunting transients to VBUS or GND before IC damage occurs. Use Value: 2.0 pF CT avoids signal integrity degradation at 480 Mbps; AEC-Q101 ensures field reliability. |
| Logic-Level Translation | Industrial Sensor Signal Conditioning |
Use Scenario: Bidirectional level shifting between 3.3 V microcontroller GPIOs and 5 V legacy sensor outputs. IC Role / Device Role / Timing Role: Passive diode-based translator enabling open-drain compatibility without active circuitry. Use Value: 0.855 V VF @ 10 mA provides precise threshold offset; SOD323 footprint saves board space. | Use Scenario: Anti-parallel clamping of analog output from RTD or thermocouple signal chains exposed to EMI. IC Role / Device Role / Timing Role: High-speed limiter protecting ADC inputs from induced spikes during motor switching events. Use Value: ≤1.0 µA IR at 25 °C ensures minimal DC error injection; –55 °C to +150 °C range matches sensor operating envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4148W-7-F | Non-automotive grade; no AEC-Q101 qualification or PPAP support | Suitable for commercial-grade consumer electronics only | Select when automotive qualification is not required and cost sensitivity is high |
| BAT54C-7-F | Lower VR (30 V), Schottky architecture, 0.24 V VF @ 10 mA | Better for low-voltage, low-loss clamping below 3.3 V systems | Choose for sub-1 V forward drop needs where 75 V rating is unnecessary |
Compared with 1N4148W-7-F, the 1N4148WSQ-13-F adds automotive qualification and traceable sourcing but shares identical electrical specs; versus BAT54C-7-F, it trades lower forward voltage for higher reverse voltage and tighter leakage control at elevated temperature.
Availability
1N4148WSQ-13-F is available at Aetrix Electronics and suitable for automotive infotainment, industrial sensor interface, and USB peripheral protection requiring stable component supply, long-term lifecycle assurance, and AEC-Q101 compliance.
Supply support for 1N4148WSQ-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 1N4148WSQ series belongs to Diodes' automotive-qualified discrete diode portfolio, engineered specifically for robust signal integrity and reliability in harsh-temperature, high-transient automotive subsystems.
FAQ
What does the "Q" suffix signify in 1N4148WSQ-13-F?
The "Q" denotes AEC-Q101 qualification, PPAP capability, and production in IATF16949-certified facilities. It confirms full automotive-grade change control, lot traceability, and stress-test validation-including temperature cycling, HTRB, and ESD-beyond commercial-grade 1N4148WS variants.
Is the SOD323 package compatible with standard reflow profiles?
Yes-the SOD323 package is rated for moisture sensitivity level 1 (MSL-1) per J-STD-020, meaning it may be stored indefinitely at ≤30 °C/85% RH and processed using standard Pb-free reflow profiles (peak 260 °C). No baking is required prior to assembly.
How does reverse recovery time impact USB 2.0 signal integrity?
A 4.0 ns tRR ensures the diode fully recovers before the next data edge in 480 Mbps USB 2.0 (240 MHz fundamental), minimizing jitter and bit errors caused by residual conduction. Slower diodes (>10 ns) risk inter-symbol interference in high-speed differential signaling.
Can 1N4148WSQ-13-F replace 1N4148 through-hole diodes in existing designs?
Electrically yes-but mechanical redesign is required. The SOD323 footprint (1.30 mm × 1.70 mm) differs significantly from DO-35 (4.5 mm × 2.5 mm). Layout must accommodate smaller pad geometry, tighter spacing, and reflow-compatible stencil design; thermal performance also improves due to lower θJA.
1N4148WSQ-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):
- 75 V
- Current - Average Rectified (Io):
- 150mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.25 V @ 150 mA
- Speed:
- Small Signal =< 200mA (Io), Any Speed
- Reverse Recovery Time (trr):
- 4 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 75 V
- Capacitance @ Vr, F:
- 2pF @ 0V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-323
- Operating Temperature - Junction:
- -65°C ~ 150°C
1N4148WSQ-13-F FAQ
1.How can I place an order for 1N4148WSQ-13-F through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4148WSQ-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 1N4148WSQ-13-F reliable?
The price and inventory of 1N4148WSQ-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 1N4148WSQ-13-F is usually 5 days.
3.What payment methods are accepted for 1N4148WSQ-13-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4148WSQ-13-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4148WSQ-13-F?
1N4148WSQ-13-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4148WSQ-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 1N4148WSQ-13-F?
For technical support, including 1N4148WSQ-13-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4148WSQ-13-F requirements.
6.How does Aetrix verify that 1N4148WSQ-13-F is sourced from the original manufacturer or authorized distributors?
All 1N4148WSQ-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 1N4148WSQ-13-F meets industry standards.
7.What is the process for return or replacement of 1N4148WSQ-13-F?
All 1N4148WSQ-13-F units undergo pre-shipment inspection (PSI). If there is an issue with 1N4148WSQ-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 1N4148WSQ-13-F part is unused and in its original packaging.
Return procedure for 1N4148WSQ-13-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4148WSQ-13-F Tags
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