140УД1А Operational Amplifier [used]

Units Sold: 198

 

140УД1А Oparational Amplifier
Genuine from Kvazar

 

 

$16.95

SKU: gra_62461 Category: Tag:

140УД1А Oparational Amplifier

 

 

 

Listing includes:

 

  • 140УД1А [OA] [used] – 1 pcs

 

 

 

Dear customers!
If you have ANY questions, PLEASE ASK us.

 

 

General description:

 

The 140UD1A (140УД1А) is a classic Soviet-era integrated circuit,
representing one of the first generations of general-purpose operational amplifiers (op-amps) produced in the USSR.
It is a medium-precision amplifier designed for a wide range of analog signal processing tasks.

Key Characteristics

  • External Compensation: this device does not have internal frequency compensation.
    To ensure stability and prevent oscillation in feedback circuits,
    external capacitors and resistors must be connected to specific pins.
  • Technology: It is a bipolar integrated circuit
  • Versions:
    • 140UD1A: Military-grade (ceramic/metal package, wide temperature range)
    • K140UD1A / KR140UD1A: Consumer-grade (metal or plastic DIP packages)

 

Technical Specifications (at ±6.3V supply)

  • Supply Voltage: Nominal ±6.3V (Operational range: ±3V to ±7V).
  • Current Consumption: Max 6 mA
  • Voltage Gain (Open Loop): 500 to 4,000
  • Input Bias Current: Max 6 µA
  • Input Offset Voltage: Max 7.5 mV
  • Slew Rate: Approx. 0.2 V/µs
  • Operating Temperature: -60°C to +125°C (Military) / -10°C to +70°C (Consumer)

 

Pin Configuration (TO-5 style 12-pin metal can)

The device typically comes in a round metal-glass package (Type 301.12-1).
  1. Pin 1: Negative Supply (-Vcc)
  2. Pin 4: Ground (Common)
  3. Pin 5: Output
  4. Pin 7: Positive Supply (+Vcc)
  5. Pin 9: Inverting Input (-)
  6. Pin 10: Non-inverting Input (+)

 

Other pins (2, 3, 12) are used for frequency compensation or specific control.

Applications

The 140UD1A was widely used in Soviet electronics for:
  • Summing amplifiers and integrators
  • Active filters and signal generators
  • Low-frequency amplification in instrumentation and control systems

International Equivalent

The closest Western equivalent to the 140UD1 series is the µA702 (Fairchild Semiconductor),
which was one of the world’s first monolithic operational amplifiers.

140УД1А Oparational Amplifier

 

 

 

Dear customers!
If you have ANY questions, PLEASE ASK us.

 

Shipping and Return information

 

All Items are shipped from Ukraine
Via International registered Airmail
Shipments are made within 1 business day
After the payments are received and verified
It takes about 4-7 days via UPS Express delivery
It takes about 10-18 days via Standard shipping
It takes about 35-45 days via Economy shipping
We combine multiple Items to save on shipping

 

 

 

UPS Express Shipping time (recommended):

Europe: 3-5 days
Germany: 3-5 days
USA, Canada: 4-7 days
Asia, South America: 5-7 days
Australia, New Zealand: 5-7 days
Africa, Central America: 5-7 days

 

 

Standard Shipping time:

Europe: 10-12 days
Germany: 10-12 days
USA, Canada: 10-15 days
Asia, South America: 10-18 days
Australia, New Zealand: 12-18 days
Africa, Central America: 12-18 days

 

 

Economy Shipping time:

Europe: 25-30 days
Germany: 25-30 days
USA, Canada: 30-35 days
Asia, South America: 35-45 days
Australia, New Zealand: 45-55 days
Africa, Central America: 45-55 days

 

 

Return Policy

All Returns are accepted

  • For Return you should contact Us within 14 Days after receiving the Item
  • Refunds are made as Money back or Replacements (buyer’s choice)
  • Return Shipments are paid by the buyer
  • No restocking fees are charged

 

 

Customs Policy

We as a seller do not receive from the buyer any charges any sales taxes and handling fees.
In any case we are not responsible for Tax(VAT) or any other Import duties or any other equivalent fees that arises upon delivery.
Please consult with your local Customs legislation and visit your local Customs department or website before making any purchases.