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1N2990B 10W Zener diode with stud mount in DO-4 package. Features 1.5V forward voltage at 2A and 9Ω impedance.
Mfr Part #:

1N2990B

Available from 1 distributors
Mfr Name: Solid State Devices Inc (SSDI)
Solid State Devices Inc (SSDI)
10W Zener diode with stud mount in DO-4 package. Features 1.5V forward voltage at 2A and 9Ω impedance.
✓ Total Stock: 10,000 pcs

1N2990B Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
10,000 pcs
On Request
10000 pcs On Request 1 On Request On Request On Request On Request On Request
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1N2990B Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
Impedance (Max) (Zzt)
Lead Style
Military Grade
Mounting Type
Operating Temperature
Power
Storage Temperature
Supplier Device Package
Termination Style
Tolerance
Voltage
Weight
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1N2990B Description

Short technical summary and product information.

The 1N2990B is a 10W Zener diode from Solid State Devices Inc (SSDI) in a stud mount DO-4 (DO-203AA) package. It offers ±5% tolerance with a maximum forward voltage of 1.5V at 2A and a Zener impedance of 9Ω. Leakage current is limited to 5µA at 25.1V. The diode operates over a junction temperature range of -65°C to +175°C and can be stored from -65°C to +200°C. Thermal resistance junction-to-case is 12°C/W, and power derating is 0.083W/°C above 55°C. It features a hermetic welded seal, is nonsensitive to ESD, and is inherently radiation hard, making it suitable for high-reliability applications such as military and aerospace systems.

1N2990B Quick Information

Product Type: Zener Diode
Canonical Name: 10W Zener Diode, Stud Mount, DO-4 Package
Subcategory: Single

1N2990B Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

1N2990B Features

  • 10W power dissipation at 55°C case temperature.
  • Hermetically sealed welded DO-4 package.
  • Stud mount with 10-32 thread.
  • ±5% Zener voltage tolerance.
  • Nonsensitive to ESD per MIL-STD-750.

1N2990B Applications

  • Voltage regulation in power supplies.
  • Overvoltage protection circuits.
  • Military and aerospace electronics.
  • Industrial control systems.

1N2990B FAQs

7 frequently asked questions generated from this part’s specifications.
What is the forward voltage of the 1N2990B?

The maximum forward voltage is 1.5 V at 2 A.

What is the power dissipation rating?

Steady-state power dissipation is 10 W at a case temperature of +55°C, derating at 0.083 W/°C above +55°C.

What is the operating temperature range?

Junction operating temperature is -65°C to +175°C.

What package does the 1N2990B use?

It uses a DO-203AA (DO-4) stud mount package with a 10-32 thread termination.

What is the Zener impedance?

The maximum Zener impedance is 9 Ω.

What is the leakage current?

Maximum leakage current is 5 µA at 25.1 V.

Is the 1N2990B RoHS compliant?

RoHS compliant versions are available with an e3 suffix for commercial grade only; standard parts may be non-compliant.

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