DO-204

DO-204 is a family of diode semiconductor packages defined by JEDEC. This family comprises lead-mounted axial devices with round leads. Generally a diode will have a line painted near the cathode end.

General form of the packages described by DO-204. Lead diameter is not controlled less than E from the body to allow for minor irregularities.
1N4148 diodes, in the DO-35 package
A drawing of a DO-41 diode package. The cathode is marked with a silver or white band.

Dimensions
Variants included in DO-204[1]
Variant Other
standards[2]		 Dimensions (mm)
A B C D E
minmaxminmaxminmaxminmaxminmax
AADO-7 [3] 25.4038.10 5.857.65 0.460.55 2.162.71 —1.27
ABDO-14 [4] 25.4038.10 5.857.62 0.460.55 2.753.55 —1.27
ACDO-15 [5] 25.4038.10 5.857.62 0.690.88 2.653.55 —1.27
ADDO-16 [6] 11.4319.05 1.272.54 0.230.33 —1.27 —1.27
AEDO-26 [7] 35.5638.10 8.7510.41 0.690.99 5.596.60 —2.03
AFDO-29 [8] 25.4038.10 8.009.14 0.740.83 3.053.81 —1.27
AGDO-34 [9] 25.4038.10 2.163.04 0.460.55 1.271.90 —1.27
AHDO-35 [10] 25.4038.10 3.055.08 0.460.55 1.532.28 —1.27
AJ— 11.4313.97 5.857.62 0.490.53 2.162.66 —1.27
AK— 11.4313.97 3.814.45 0.360.40 1.661.90 —1.27
ALDO-41 [11] 25.40— 4.075.20 0.720.86 2.042.71 —1.27
AM— 17.5338.10 3.185.20 0.640.91 1.272.79 —1.27
AN— 25.40— 5.085.84 0.710.86 2.543.05 —1.27
AP— 25.4038.10 3.184.57 0.740.89 2.543.81 —1.27
AR— 27.9538.10 9.279.52 1.221.32 6.106.35 —2.54

Common variants

Several common packages are archived in DO-204 as variants, and may be referred to using their alternative names.

DO-7

The DO-7 (also known as DO-204-AA) is a common semiconductor package for 1N34A germanium diodes.[3][12]

DO-35

The DO-35 (also known as DO-204-AH or SOD27) is a semiconductor package used to encapsulate signal diodes.[10][13][2] It is often used to package small signal, low power diodes such as 1N4148 (a 100 V, 300 mA silicon diode.)

DO-41

The DO-41 (also known as DO-204-AL or SOD66) is a common semiconductor package used to encapsulate rectifier diodes.[11][14] The name is derived from the JEDEC descriptor "Diode Outline, Case Style 41".[2] DO-41 diodes are larger than signal diode packages such as DO-35, which are not required to handle large currents. The most common diode using this packaging is the 1N400x series of rectification diodes.

References
  1. "JEDEC DO-204 family package specification" (PDF). JEDEC. January 20, 1976. Archived from the original (PDF) on October 10, 2008.
  2. "Master Index for JEDEC 95 Outlines and Standards" (PDF). JEDEC. Archived from the original (PDF) on June 16, 2017. Retrieved June 16, 2017.
  3. "JEDEC DO-7 package specification" (PDF). JEDEC. Archived from the original (PDF) on June 17, 2017.
  4. "JEDEC DO-14 package specification" (PDF). JEDEC. Archived from the original (PDF) on June 17, 2017.
  5. "JEDEC DO-15 package specification" (PDF). JEDEC. Archived from the original (PDF) on June 17, 2017.
  6. "JEDEC DO-16 package specification" (PDF). JEDEC. Archived from the original (PDF) on June 17, 2017.
  7. "JEDEC DO-26 package specification" (PDF). JEDEC. Archived from the original (PDF) on June 17, 2017.
  8. "JEDEC DO-29 package specification" (PDF). JEDEC. Archived from the original (PDF) on June 17, 2017.
  9. "JEDEC DO-34 package specification" (PDF). JEDEC. Archived from the original (PDF) on June 17, 2017.
  10. "JEDEC DO-35 package specification" (PDF). JEDEC. Archived from the original (PDF) on June 17, 2017.
  11. "JEDEC DO-41 package specification" (PDF). JEDEC. Archived from the original (PDF) on June 17, 2017.
  12. DO-7 diode package; Interface Bus.
  13. DO-35 diode package; Interface Bus.
  14. DO-41 diode package; Interface Bus.
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