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STA403A STA403A is a 4-element NPN Darlington transistor array by Sanken. Rated for 100V collector-emitter voltage and 4A continuous collector current.
Mfr Part #:

STA403A

Available from 2 distributors
Mfr Name: Sanken
Sanken
STA403A is a 4-element NPN Darlington transistor array by Sanken. Rated for 100V collector-emitter voltage and 4A continuous collector current.
✓ Total Stock: 9 pcs
$ Price Range: $0.99

STA403A Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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Non-Authorised Inventory information
7 pcs
On Request
7 pcs On Request 1 On Request On Request On Request On Request On Request
Components Technology Group, Inc. ✓
Non-Authorised Inventory information
2 pcs
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2 pcs On Request 1 On Request On Request On Request On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

STA403A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Current
DC Current Gain (hFE) (Min) @ Ic, Vce
Junction Temperature
Mounting Type
Operating Temperature
Power
Supplier Device Package
Transistor Type
Turn Off Time
Turn On Time
Vce Saturation (Max) @ Ib, Ic
Voltage
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STA403A Description

Short technical summary and product information.

The STA403A is a four-channel NPN Darlington transistor array manufactured by Sanken. It is designed for switching and amplification applications requiring high current gain. Each Darlington pair offers a minimum DC current gain (hFE) of 1000 at 2A collector current and 4V collector-emitter voltage, ensuring efficient low-current drive capability.

 

Key electrical characteristics include a maximum collector-emitter voltage (VCEO) of 100V, a continuous collector current (IC) of 4A, and a pulsed collector current (ICP) of 8A. The device can dissipate up to 20W when the case temperature is held at 25°C, or 4W at an ambient temperature of 25°C. The collector-emitter saturation voltage is typically 2V at IC=2A with a base current of 10mA.

 

The STA403A is housed in a 10-SIP (Single In-line Package) with through-hole mounting, suitable for PCB assembly. The operating junction temperature range extends up to 150°C, with a storage temperature range of -40°C to +150°C. This component is commonly used in motor control, relay drivers, and solenoid drivers where multiple high-current outputs are needed.

STA403A Quick Information

Product Type: NPN Darlington Transistor Array
Canonical Name: STA403A NPN Darlington Transistor Array
Subcategory: Bipolar (BJT) Arrays

STA403A Compliance

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

STA403A Estimated Pricing

Qty Low High
1+ $0.99 $0.99

Estimated market price range - modelled values for guidance only, not live distributor offers.

STA403A Features

  • Four NPN Darlington pairs in one package.
  • Maximum collector-emitter voltage of 100V.
  • Continuous collector current rating of 4A.
  • Minimum DC current gain of 1000 at 2A.
  • Through-hole 10-SIP package for easy mounting.

STA403A Applications

  • Ideal for relay driving circuits.
  • Used in solenoid actuator control.
  • Suitable for stepper motor driving.
  • Common in power load switching.

STA403A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum collector-emitter voltage (VCEO) of the STA403A?

100V.

What is the continuous collector current rating?

4A.

What is the DC current gain (hFE) of the STA403A?

Minimum 1000 at VCE=4V, IC=2A.

What is the maximum operating junction temperature?

150°C.

What package is the STA403A available in?

10-SIP (Single In-line Package) with through-hole mounting.

What is the collector-emitter saturation voltage?

Maximum 2V at IC=2A, IB=10mA.

What are the switching times of the STA403A?

Turn-on time 0.6µs, storage time 5µs, fall time 2µs under test conditions (VCC=40V, IC=2A, IB1=–IB2=10mA).

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