1. Document Overview:

️· Product: 50 Watt Zener Diodes
️· Qualification: Qualified per MIL-PRF-19500/114 (military standard)
️· Manufacturer: Microsemi (now part of Microchip Technology)
️· Page Reference: This is Page 3-6 of a larger document. The revision is Rev. 2, dated 101151.
️· Contact Information: 6 Lake Street, Lawrence, MA 01841. Phone numbers and website provided.
️· Page 3, 4, 6 contain graphical data

2. Key Features & Specifications:

️· Zener Voltage Tolerance: Standard tolerance is +/- 5% for nominal Zener voltage.
- +/- 10% tolerance: Suffix 'A'
- +/- 20% tolerance: No suffix or 'R'
- +/- 2% tolerance: Suffix 'C'
- +/- 1% tolerance: Suffix 'D'
️· Polarity:
- Anode connected to the case (standard)
- Reverse polarity (cathode to case): Suffix 'R'
️· Thermal Equilibrium: Zener voltage is measured with a base temperature of 30°C.
️· Zener Impedance: Derived from AC voltage with AC current 10% of the DC zener current. Measured at two points to ensure a sharp knee on the breakdown curve. Refer to MicroNote 202 for further information.
️· Dissipation: Zener impedance is tested with a constant 12.5 watts of dissipation to ensure a rise in temperature of 18.75°C.
️· Package Dimensions: TO-3-like package. Detailed physical dimensions (in inches and millimeters) are provided in a table.

3. Graphs & Figures:

️· Figure 1: Physical dimensions of the package (TO-3 type).
️· Figure 2: Power Derating Curve.
️· Figure 3: Typical Zener Impedance vs. Zener Current (for representative types).

4. Key Table of Dimensions (Partial, most important):

Dimension	Min (Inches)	Max (Inches)	Min (mm)	Max (mm)
Height	0.60	1.35	1.52	3.42
Length	0.27	0.38	6.86	9.65
Width	0.42	0.44	10.67	11.18
Case height	0.048	0.053	0.97	1.35

Important Notes from the Document:

️· Military Standard: The diodes meet the requirements of MIL-PRF-19500/114, signifying a level of quality and reliability suitable for military applications.
️· MicroNote 202: For further technical information on Zener impedance, refer to MicroNote 202.
️· Internal Jumper: Pins 1 and 4 are internally connected with an internal jumper.