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NXP Semiconductors 1N4148,133
- Part No.:
- 1N4148,133
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
1N4148,133.pdf
- Description:
- DIODE GEN PURP 100V 200MA ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:9,742
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Product details
Overview
1N4148,133 from Nexperia is a high-speed switching diode in a hermetically sealed glass SOD27 (DO-35) package, rated for 100 V repetitive peak reverse voltage, 450 mA repetitive peak forward current, and 4 ns maximum reverse recovery time. It serves as a general-purpose fast-switching rectifier in signal routing, clamping, and protection circuits across consumer and industrial electronics.
For engineers reviewing the 1N4148,133 datasheet, 1N4148,133 pinout, 1N4148,133 application, or 1N4148,133 equivalent, key selection criteria include its 4 ns trr, 100 V VRRM, low 4 pF capacitance at 0 V, 25 nA IR at 20 V, and axial-leaded DO-35 mechanical compatibility with legacy through-hole designs.
Technical Context
The 1N4148,133 is fabricated using planar silicon technology and optimized for rapid turn-off behavior, enabling reliable operation in digital logic interfacing and pulse shaping where minimal storage charge and low reverse recovery loss are critical. Its thermal resistance from junction to ambient is 350 K/W under standard FR4 mounting conditions with 10 mm lead length.
It operates over a junction temperature range of −65 °C to +200 °C and supports continuous forward current up to 200 mA at 25 °C ambient, derating linearly above that per Fig.2. The device exhibits typical forward voltage of ≤1.0 V at 10 mA and reverse leakage of ≤25 nA at 20 V and 25 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - supports reverse blocking in 48 V and lower DC supply rails without breakdown |
| trr | 4 ns max - enables clean switching in >10 MHz digital signal paths and clock line clamping |
| Cd | 4 pF max at 0 V - minimizes capacitive loading on high-frequency signal lines |
| IR | 25 nA at VR = 20 V, 25 °C - ensures low standby power loss in battery-backed circuits |
| IFRM | 450 mA - handles transient surge currents in ESD protection and snubber networks |
| Ptot | 500 mW at Tamb = 25 °C - defines safe DC power handling before thermal derating applies |
Pinout & Package
Package: Hermetically sealed axial-leaded glass SOD27 (DO-35); cathode indicated by black band; leads tinned for solderability; RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (unbanded end) | Forward current entry point | Connects to higher-potential node during conduction; requires no external biasing |
| Cathode (banded end) | Forward current exit / reverse blocking terminal | Marked end must face lower potential; determines polarity in clamp and steering applications |
Key Features
| Feature | Design Value |
|---|---|
| High-speed switching | 4 ns reverse recovery time enables use in >10 MHz clock distribution and data line protection |
| Low junction capacitance | 4 pF at 0 V reverse bias preserves signal integrity in RF and high-speed digital interfaces |
| Wide operating temperature | −65 °C to +200 °C junction range supports automotive under-hood and industrial control environments |
| Hermetic glass package | SOD27 construction provides long-term reliability and moisture resistance without conformal coating |
Applications
| Digital Logic Clamping | ESD Protection Network |
|---|---|
Use Scenario: Preventing voltage overshoot on CMOS input pins during signal transitions. IC Role / Device Role / Timing Role: Fast clamping diode shunting transients to VCC or GND rail. Use Value: 4 ns trr and low VF ensure sub-nanosecond response, limiting overshoot to <1.2 V beyond rail. | Use Scenario: Secondary-level protection for USB, I²C, or GPIO lines against human-body-model ESD events. IC Role / Device Role / Timing Role: Low-capacitance steering diode diverting surge current away from sensitive inputs. Use Value: 4 pF Cd avoids signal degradation; 450 mA IFRM withstands 8 kV HBM pulses when combined with series impedance. |
| Waveform Shaping | Sample-and-Hold Input Protection |
Use Scenario: Sharpening square wave edges in function generator outputs or clock fanout buffers. IC Role / Device Role / Timing Role: High-speed clipping diode limiting positive/negative excursions. Use Value: 100 V VRRM and 1 V VF at 10 mA allow precise amplitude control without distortion in 5–24 V systems. | Use Scenario: Isolating analog front-end inputs from digital switching noise in data acquisition systems. IC Role / Device Role / Timing Role: Reverse-biased guard diode blocking coupling during hold phase. Use Value: 25 nA IR at 20 V prevents measurable leakage-induced droop over 100 ms sample intervals. |
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,115 | Same electrical specs; SOD-123 surface-mount package instead of DO-35 | Requires PCB redesign for SMT assembly; not drop-in compatible | Select when space-constrained layouts or automated assembly demand SMT packaging |
| BAS16,215 | 4 ns trr, 100 V VRRM, but 215 mW Ptot vs. 500 mW; VF = 1.25 V @ 50 mA | Lower power handling limits use in higher-current clamping; higher VF increases conduction loss | Prefer for low-power portable devices where thermal budget is tighter than speed requirement |
Compared with 1N4148,133, the 1N4148W,115 offers identical speed and voltage ratings in a smaller footprint but requires layout change, while the BAS16,215 trades power capability and forward drop for comparable switching performance in ultra-low-power contexts.
Availability
1N4148,133 is available at Aetrix Electronics and suitable for digital logic clamping, ESD protection networks, and waveform shaping applications requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for 1N4148,133 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 leader in discrete, logic, and PowerMOS semiconductors, formed in 2017 from the former NXP Standard Products division.
The 1N4148,133 belongs to Nexperia's high-speed diode portfolio, engineered for robust, cost-effective switching in automotive, industrial, computing, and consumer electronics where reliability and consistency are essential.
FAQ
What is the maximum reverse recovery time (trr) specification for the 1N4148,133?
The 1N4148,133 has a maximum reverse recovery time of 4 ns when switched from IF = 10 mA to IR = 60 mA with RL = 100 Ω and measured at IR = 1 mA. This value is guaranteed across the full operating temperature range and is critical for maintaining signal fidelity in high-frequency switching applications. The 1N4148,133 achieves this performance via optimized carrier lifetime control in its planar silicon structure.
Is the 1N4148,133 suitable for use in automotive under-hood environments?
Yes, the 1N4148,133 supports junction temperatures from −65 °C to +200 °C and is qualified for automotive applications per Nexperia's AEC-Q101 stress test requirements. Its hermetically sealed glass SOD27 package resists humidity and thermal cycling, making it appropriate for engine control units and body electronics where ambient temperatures exceed 125 °C. The 1N4148,133 maintains stable trr and IR parameters across this extended range.
Does the 1N4148,133 have a specified forward voltage at 100 mA?
Yes, the 1N4148,133 has a maximum forward voltage of 1.0 V at IF = 100 mA and Tj = 25 °C. This parameter is confirmed in the Electrical Characteristics table of the official Nexperia datasheet. At lower currents such as 10 mA, VF is typically ≤0.8 V, supporting efficient operation in low-power logic interface circuits. The 1N4148,133's VF remains stable across its rated temperature range.
What is the cathode marking convention for the 1N4148,133 package?
The cathode of the 1N4148,133 is identified by a distinct black band on the glass body of the SOD27 (DO-35) package. This marking aligns with JEDEC standard DO-35 orientation and is visible along the axial lead direction. During PCB layout, the banded end must connect toward the more negative potential in forward-bias configurations. The 1N4148,133 uses this unambiguous visual indicator to prevent assembly errors.
Can the 1N4148,133 replace older Philips or NXP-branded 1N4148 variants?
Yes, the 1N4148,133 is the direct Nexperia successor to legacy NXP and Philips 1N4148 diodes, maintaining identical electrical specifications, package dimensions, and marking codes (e.g., "4148PH"). Nexperia explicitly states continuity of form, fit, and function across this transition. The 1N4148,133 may be used as a drop-in replacement without design revision, provided sourcing documentation confirms the 1N4148,133 part number and SOD27 package.
1N4148,133 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Cut Tape (CT)
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 200mA
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 10 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:
- Through Hole
- Supplier Device Package:
- ALF2
- Operating Temperature - Junction:
- -
1N4148,133 FAQ
1.How can I place an order for 1N4148,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N4148,133 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 1N4148,133 reliable?
The price and inventory of 1N4148,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N4148,133 is usually 5 days.
3.What payment methods are accepted for 1N4148,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N4148,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N4148,133?
1N4148,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N4148,133 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 1N4148,133?
For technical support, including 1N4148,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N4148,133 requirements.
6.How does Aetrix verify that 1N4148,133 is sourced from the original manufacturer or authorized distributors?
All 1N4148,133 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 1N4148,133 meets industry standards.
7.What is the process for return or replacement of 1N4148,133?
All 1N4148,133 units undergo pre-shipment inspection (PSI). If there is an issue with 1N4148,133, 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 1N4148,133 part is unused and in its original packaging.
Return procedure for 1N4148,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N4148,133 Tags
-
1N4448X-TP
Micro Commercial Co
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1N4148WX-TP
Micro Commercial Co
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1N4148TR
onsemi
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MMSD4148T1G
onsemi
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MMBD914LT3G
onsemi
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BAS16HT1G
onsemi
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1N914BWT
onsemi
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BAS21LT1G
onsemi
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LL4148
onsemi
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BAS16LT1G
onsemi
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MMSD914T1G
onsemi
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BAV21W-7-F
Diodes Incorporated
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