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ULN2003B

OBSOLETE

50-V, 7-ch darlington array with 3-V input capability and low cost

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ULN2003B is no longer in production
This product is no longer in production. New designs should consider an alternate product.
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ULN2003A ACTIVE 50V 7-ch darlington transistor array Replacement
ULN2003AI ACTIVE 50-V, 7-ch darlington transistor array, -40 to 105C Replacement

ULN2003B

OBSOLETE
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Product details

Rating Catalog Operating temperature range (°C) -40 to 105 Drivers per package 7 Switching voltage (max) (V) 50 Output voltage (max) (V) 50 Peak output current (A) 0.5 Delay time (typ) (ns) 250 Input compatibility CMOS, TTL Vol at lowest spec current (typ) (mV) 900 Iout/ch (max) (mA) 500 Iout_off (typ) (µA) 50
Rating Catalog Operating temperature range (°C) -40 to 105 Drivers per package 7 Switching voltage (max) (V) 50 Output voltage (max) (V) 50 Peak output current (A) 0.5 Delay time (typ) (ns) 250 Input compatibility CMOS, TTL Vol at lowest spec current (typ) (mV) 900 Iout/ch (max) (mA) 500 Iout_off (typ) (µA) 50
PDIP (N) 16 181.42 mm² 19.3 x 9.4 SOIC (D) 16 59.4 mm² 9.9 x 6 TSSOP (PW) 16 32 mm² 5 x 6.4
  • Greater Than 4x Reduction in Output Leakage (ICEX) over ULN2003A
  • 500-mA Rated Collector Current (Single Output)
  • High-Voltage Outputs 50 V
  • Output Clamp Diodes
  • Inputs Compatible With Various Types of Logic
  • Relay-Driver Applications
  • Greater Than 4x Reduction in Output Leakage (ICEX) over ULN2003A
  • 500-mA Rated Collector Current (Single Output)
  • High-Voltage Outputs 50 V
  • Output Clamp Diodes
  • Inputs Compatible With Various Types of Logic
  • Relay-Driver Applications

The ULN2003B device is a high-voltage, high-current Darlington transistor array. This device consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The collector-current rating of a single Darlington pair is 500 mA. The Darlington pairs can be paralleled for higher current capability.

The ULN2003B has a 2.7-kΩ series base resistor for each Darlington pair for operation directly with TTL or CMOS devices.

The ULN2003B device is a high-voltage, high-current Darlington transistor array. This device consists of seven NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The collector-current rating of a single Darlington pair is 500 mA. The Darlington pairs can be paralleled for higher current capability.

The ULN2003B has a 2.7-kΩ series base resistor for each Darlington pair for operation directly with TTL or CMOS devices.
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* Data sheet ULN2003B High-Voltage, High-Current Darlington Transistor Array datasheet (Rev. B) PDF | HTML 16 Aug 2016

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