High-speed diodes

The 1N4148 and 1N4448 are high-speed switching diodes fabricated in planar technology, and encapsulated in hermetically sealed leaded glass SOD27 (DO-35) packages.

For efficiency and logistic reasons the manufacturing and selling of products of the glass-diode type family 1N4148 is taken over completely by TAK CHEONG under license of NXP, where it has been manufactured already since year 2003.

This includes also the complete customer support like product information, complaint issue handling, application support etc.

Devices listed on this page should not be used for new designs!
This product has been discontinued click here for discontinuation information and replacement parts.


  • Hermetically sealed leaded glass SOD27 (DO-35)package
  • High switching speed: max. 4 ns
  • General application
  • Continuous reverse voltage: max. 100 V
  • Repetitive peak reverse voltage: max. 100 V
  • Repetitive peak forward current: max. 450 mA.

Target applications

  • High-speed switching.


Type numberPackage versionPackage nameSize (mm)VR [max] (V)IFSM [max] (A)VF [max] (mV)IR [max] (nA)IFRM (mA)Configurationtrr [max] (ns)IF [max] (mA)Cd [max] (pF)
1N4148SOD27ALF24.25 x 1.8510041000@IF=10mA25@VR=20V450single42004


All type numbers in the table below are discontinued. See the table discontinuation information for more information.

Type numberPackageOutline versionReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
SOD27Reel, Axial, 52mmWithdrawn / End-of-lifeStandard Marking1N4148,113
( 9330 839 90113 )
Ammopack, Axial, 52mmWithdrawn / End-of-lifeStandard Marking1N4148,133
( 9330 839 90133 )
Ammopack, Axial, 26mmWithdrawn / End-of-lifeStandard Marking1N4148,143
( 9330 839 90143 )

Discontinuation information

Type numberOrdering code (12NC)Last-time buy dateLast-time delivery dateReplacement productDN NoticeStatusComments


All type numbers in the table below are discontinued. See the table discontinuation information for more information.

Type numberOrderable part numberChemical contentRoHS / RHFLeadfree conversion dateMSLMSL leadfree
1N41481N4148,113Not available11
1N41481N4148,133Not available11
1N41481N4148,143Not available11
Quality and reliability disclaimer

Documentation (13)

File nameTitleTypeDate
1N4148_1N4448High-speed diodesData sheet2004-08-09
AN10496Vacuum cleaner with Philips P89LPC901Application note2006-08-09
AN97032Circuit description of CCM420 monitorApplication note1997-10-13
AN9500822 MHz Video Amplifier for Large Jumbo Picture TubesApplication note1996-03-15
AN9901190W Resonant SMPS with TEA1610 SwingChip (tm)Application note2000-09-13
AN00057ECO-monitorApplication note2000-11-07
LSYMDIO-Design support1999-04-30
1N4148_NXP_Product_Quality1N4148 NXP Product QualityQuality document2015-01-31
1N4148_NXP_Product_Reliability1N4148 NXP Product ReliabilityQuality document2015-01-31
TAK-Cheong-licensing-1N4148_1N4448_BAW62-glass-diodesTAK Cheong licensing 1N4148 1N4448 BAW62 glass-diodesQuality document2015-10-22
75017631Discretes Semiconductors Selection Guide 2016Selection guide2016-02-16
1N41481N4148 SPICE modelSPICE model2012-07-22
SOD27glass, hermetically sealed glass package; axial leaded; 2 leads; 4.25 mm x 1.85 mm bodyOutline drawing2017-01-30


Find answers to your design questions on this page. If available you can find information in our Nexperia Support Community or you can find Nexperia models and Design tools.


1N41481N4148 SPICE modelSPICE model2012-07-22