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Diodes Incorporated 1N4148W-7-F
- Part No.:
- 1N4148W-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
1N4148W-7-F.pdf
- Description:
- DIODE GEN PURP 100V 300MA SOD123
- Quantity:
- Payment:
- Shipping:
Inventory:172,514
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Product details
Overview
1N4148W-7-F from Diodes Incorporated is a surface-mount fast-switching silicon signal diode in SOD-123 package, rated for 100 V peak repetitive reverse voltage, 300 mA forward current, and 4 ns reverse recovery time. It delivers low forward voltage (0.715 V at 1 mA), low junction capacitance (2 pF), and operates across –55 °C to +150 °C - widely deployed in high-speed digital logic clamping, waveform shaping, and protection circuits on industrial control PCBs.
For engineers reviewing the 1N4148W-7-F datasheet, 1N4148W-7-F pinout, 1N4148W-7-F application, or 1N4148W-7-F equivalent, key selection criteria include reverse recovery speed, forward voltage consistency at low currents, thermal derating behavior on FR-4, and SOD-123 footprint compatibility with automated placement systems.
Technical Context
This diode employs a planar epitaxial silicon structure optimized for rapid carrier recombination, enabling sub-4 ns reverse recovery under standardized 10 mA switching conditions with 100 Ω load. Its low 2 pF capacitance at 0 V bias supports >100 MHz small-signal AC coupling without significant phase distortion.
The device's 315 °C/W junction-to-ambient thermal resistance reflects its SOD-123 package's limited copper pad coupling; power dissipation must be actively derated above 25 °C ambient per Figure 1, reaching 0 mW at 125 °C ambient on standard double-sided 3 oz FR-4.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - supports DC blocking and transient suppression up to 100 V repetitive reverse stress without breakdown |
| IF | 300 mA continuous - sufficient for logic-level signal routing and moderate-current clamp applications |
| tRR | 4 ns max - enables reliable operation in 10–50 MHz digital switching and pulse shaping circuits |
| VF @ 1 mA | 0.715 V max - ensures minimal forward drop in low-current bias networks and precision reference paths |
| CT @ 0 V | 2.0 pF max - preserves signal integrity in RF detector inputs and high-frequency sampling nodes |
| TJ Range | –55 °C to +150 °C - qualified for under-hood automotive modules and industrial motor drive control boards |
Pinout & Package
Package: SOD-123 - surface-mount plastic case with cathode band marking, 1.55 mm nominal width, 2.65 mm length, and 0.30 mm lead thickness; compatible with IPC-7351B SOIC-123 footprint and reflow profiles per J-STD-020 Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry node | Connected to lower-potential side of switched path; requires thermal relief on high-current traces |
| Cathode | Forward current exit node / reverse-biased terminal | Marked by band; ties to higher-potential rail in clamping; critical for ESD protection orientation |
Key Features
| Feature | Design Value |
|---|---|
| Fast reverse recovery | 4 ns maximum enables clean edge transitions in 25+ MHz clock distribution and data line termination |
| Low forward voltage | 0.715 V at 1 mA minimizes voltage error in precision analog switch biasing and reference diode networks |
| Low junction capacitance | 2 pF at 0 V allows use in 100+ MHz RF detector front-ends without loading source impedance |
| Lead-free & green construction | Halogen- and antimony-free molding compound meets IEC 61249-2-21 and RoHS 3 (2015/863/EU) |
Applications
| Digital Logic Clamping | ESD Protection Interface |
|---|---|
Use Scenario: Clamp TTL/CMOS input pins to prevent overvoltage during hot-plug or bus contention. IC Role / Device Role / Timing Role: Fast-turn-on shunt limiter that conducts within nanoseconds when input exceeds VCC + 0.7 V. Use Value: Prevents latch-up in microcontroller GPIOs using <4 ns response and <2 pF parasitic loading. |
Use Scenario: Protect USB 2.0 D+/D− lines from human-body-model (HBM) ESD events. IC Role / Device Role / Timing Role: Low-capacitance steering diode that routes transient current to ground or VCC rails. Use Value: Maintains signal integrity with 2 pF loading while surviving ±8 kV HBM per IEC 61000-4-2. |
| Waveform Shaping | High-Speed Sampling Gate |
Use Scenario: Shape square-wave outputs from oscillator ICs into clean pulses for trigger circuits. IC Role / Device Role / Timing Role: Edge-sharpening clipper that removes slow-rising/falling tails via nonlinear conduction. Use Value: Achieves <1 ns jitter reduction in timing-critical strobe generation due to 4 ns tRR. |
Use Scenario: Gate analog sample pulses in test equipment front-ends operating up to 50 MSPS. IC Role / Device Role / Timing Role: Sample-and-hold enable switch with minimal charge injection and off-state leakage. Use Value: Limits aperture uncertainty to <50 ps using low 1 µA IR at 25 V reverse bias. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast-switching diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BAV16W-7-F | Identical SOD-123 package, same 4 ns tRR, but VRRM = 85 V (vs. 100 V) | Suitable where system reverse voltage stays below 85 V; slightly lower cost in high-volume consumer designs | Select when 85 V rating suffices and BOM consolidation with BAV16W is prioritized |
| 1N4148WS-7-F | SOD-323 package (1.7 × 1.25 mm), same electrical specs, but 30% smaller footprint and higher thermal resistance (350 °C/W) | Better for space-constrained portable devices; requires tighter layout control for thermal management | Choose for ultra-dense layouts where board area is premium and thermal margin remains adequate |
Compared with BAV16W-7-F, the 1N4148W-7-F offers 15 V higher reverse blocking for robustness in variable-voltage industrial buses; versus 1N4148WS-7-F, it trades 30% larger footprint for 11% lower thermal resistance and easier rework handling.
Availability
1N4148W-7-F is available at Aetrix Electronics and suitable for digital logic clamping, ESD interface protection, waveform shaping, and high-speed sampling gate applications requiring stable component supply across production lifecycles.
Supply support for 1N4148W-7-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 centers across Asia and manufacturing in IATF 16949-certified facilities.
This part belongs to Diodes' general-purpose fast-switching diode product line, engineered for high-reliability signal routing, transient suppression, and logic interface conditioning in industrial, computing, and communications equipment.
FAQ
What is the maximum allowable forward surge current for 1N4148W-7-F?
The non-repetitive peak forward surge current is 2.0 A for 1.0 µs pulse width and 1.0 A for 1.0 s pulse width, as specified in the Absolute Maximum Ratings table. These values assume TA = +25 °C and are not repeatable without adequate thermal recovery time between pulses.
Does 1N4148W-7-F meet automotive qualification standards?
No - the standard 1N4148W-7-F is not AEC-Q101 qualified. The automotive-grade variant is the 1N4148WQ-7-F, which undergoes additional stress testing, PPAP documentation, and is manufactured in IATF 16949-certified facilities.
How does thermal derating affect power dissipation at elevated ambient temperatures?
Power dissipation must be linearly derated above +25 °C ambient at 1.27 mW/°C, reaching zero at +125 °C ambient on standard FR-4 with 3 oz copper, per Figure 1 in DS30086 Rev. 31-2. This reflects its 315 °C/W RθJA and 400 mW PD rating at 25 °C.
Can 1N4148W-7-F replace older through-hole 1N4148 variants in new designs?
Yes - electrically identical to legacy 1N4148, but in SOD-123 surface-mount package. Layout must accommodate the 2.65 mm × 1.55 mm footprint and cathode-band polarity marking; no changes to circuit performance or biasing are required.
1N4148W-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SOD-123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 300mA
- 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:
- 1 µA @ 100 V
- Capacitance @ Vr, F:
- 2pF @ 0V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123
- Operating Temperature - Junction:
- -55°C ~ 150°C
1N4148W-7-F FAQ
1.How can I place an order for 1N4148W-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4148W-7-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 1N4148W-7-F reliable?
The price and inventory of 1N4148W-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4148W-7-F is usually 5 days.
3.What payment methods are accepted for 1N4148W-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4148W-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4148W-7-F?
1N4148W-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4148W-7-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 1N4148W-7-F?
For technical support, including 1N4148W-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4148W-7-F requirements.
6.How does Aetrix verify that 1N4148W-7-F is sourced from the original manufacturer or authorized distributors?
All 1N4148W-7-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 1N4148W-7-F meets industry standards.
7.What is the process for return or replacement of 1N4148W-7-F?
All 1N4148W-7-F units undergo pre-shipment inspection (PSI). If there is an issue with 1N4148W-7-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 1N4148W-7-F part is unused and in its original packaging.
Return procedure for 1N4148W-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4148W-7-F Tags
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1N4448X-TP
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1N4148WX-TP
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1N4148TR
onsemi
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MMSD4148T1G
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MMBD914LT3G
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BAS16HT1G
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BAS21LT1G
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LL4148
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MMSD914T1G
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BAV21W-7-F
Diodes Incorporated
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