# Bipolar Transistor Array, Darlington, NPN, 50 V, 500 mA, 2.25 W, 1000 hFE, DIP
**URL**: https://novapart.co/products/ULN2804A/bipolar-transistor-array-darlington-npn-50-v-500
**SKU**: ULN2804A
**Manufacturer**: STMICROELECTRONICS
**Category**: Semiconductors - Discretes || Transistors || Bipolar Transistors || Bipolar Junction Transistor Arrays - BJT
**Price**: €1.2600
**Stock**: 1000+
**Lead Time**: 2 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| No. Of Pins | 18Pins |
| Dc Current Gain Hfe | 1000hFE |
| Transistor Mounting | Through Hole |
| Transistor Polarity | NPN |
| Dc Collector Current | 500mA |
| Power Dissipation Pd | 2.25W |
| Transistor Case Style | DIP |
| Operating Temperature Max | 85°C |
| Collector Emitter Voltage V(Br)Ceo | 50V |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:1094429/)
**==> picture [61 x 39] intentionally omitted <==**
## **ULN2801A, ULN2802A, ULN2803A, ULN2804A** Eight Darlington array
**Datasheet** − **production data**
## **Features**
- Eight Darlington transistors with common emitters
- Output current to 500 mA
- Output voltage to 50 V
- Integral suppression diodes
**==> picture [77 x 55] intentionally omitted <==**
- Versions for all popular logic families
- Output can be paralleled
**DIP-18**
- Inputs pinned opposite outputs to simplify board layout
## **Description**
convenient input-opposite-output pinout to simplify board layout.
The ULN2801A, ULN2802A, ULN2803A and ULN2804A each contain eight Darlington transistors with common emitters and integral suppression diodes for inductive loads. Each Darlington features a peak load current rating of 600 mA (500 mA continuous) and can withstand at least 50 V in the OFF state. Outputs may be paralleled for higher current capability.
Four versions are available to simplify interfacing to standard logic families: the ULN2801A is designed for general purpose applications with a current limit resistor; the ULN2802A has a 10.5 kΩ input resistor and Zener for 14-25 V PMOS; the ULN2803A has a 2.7 kΩ input resistor for 5 V TTL and CMOS; the ULN2804A has a 10.5 kΩ input resistor for 6-15 V CMOS.
All types are supplied in an 18-lead plastic DIP with a copper lead form and feature the
**Table 1. Device summary**
|**Table 1.**
**Device summary**||
|---|---|
|**Order codes**|**Package**|
|ULN2801A|DIP-18|
|ULN2802A||
|ULN2803A||
|ULN2804A||
This is information on a product in full production.
www.st.com
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November 2012 Doc ID 1536 Rev 3
**Contents**
**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
|**Contents**|**Contents**|
|---|---|
|**1**|**Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3**|
|**2**|**Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4**|
|**3**|**Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5**|
|**4**|**Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6**|
|**5**|**Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7**|
|**6**|**Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9**|
|**7**|**Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11**|
|**8**|**Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13**|
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**Diagram**
**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
## **1 Diagram**
## **Figure 1. Schematic diagrams**
For ULN2801A (each driver for PMOS-CMOS)
For ULN2803A (each driver for 5V, TTL/CMOS)
For ULN2802A (each driver for 14-15V PMOS)
For ULN2804A (each driver for 6-15V CMOS/PMOS)
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**Pin configuration**
**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
## **2 Pin configuration**
## **Figure 2. Pin connections (top view)**
4/14 Doc ID 1536 Rev 3 ~~a~~
**Maximum ratings**
**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
## **3 Maximum ratings**
## **Table 2. Absolute maximum ratings**
|**Symbol**|**Parameter**|**Value**|**Unit**|
|---|---|---|---|
|VO|Output voltage|50|V|
|VI|Input voltage (for ULN2802A - ULN2803A - ULN2804A)|30|V|
|IC|Continuous collector current|500|mA|
|IB|Continuous base current|25|mA|
|PTOT|Power Dissipation (one Darlington pair)|1|W|
||Power Dissipation (total package)|2.25||
|TA|Operating ambient temperature range|- 20 to 85|°C|
|TSTG|Storage temperature range|- 55 to 150|°C|
|TJ|Junction temperature|-20 to 150|°C|
## **Table 3. Thermal data**
|**Symbol**|**Parameter**|**Value**|**Unit**|
|---|---|---|---|
|RthJA|Thermal resistance junction-ambient|55|°C/W|
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**Electrical characteristics**
**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
## **4 Electrical characteristics**
## TA = 25 °C unless otherwise specified.
**Table 4. Electrical characteristics**
|**Symbol**|**Parameter**|**Test condition**|**Min.**|**Typ.**|**Max.**|**Unit**|
|---|---|---|---|---|---|---|
|ICEX|Output leakage current|VCE= 50V||||µA|
|||TA= 70°C, VCE= 50V (Figure 3)|||50||
|||TA= 70°C for ULN2802A, VCE= 50V,
VI= 6V (Figure 4)|||100||
|||TA= 70°C for ULN2804A, VCE= 50V,
VI= 1V (Figure 4)|||500||
|VCE(SAT)|Collector-emitter saturation
voltage (Figure 5)|IC= 100mA, IB= 250µA||0.9|1.1|V|
|||IC= 200mA, IB= 350µA||1.1|1.3||
|||IC= 350mA, IB= 500µA||1.3|1.6||
|II(ON)|Input current (Figure 6)|for ULN2802A, VI= 17V||0.82|1.25|mA|
|||for ULN2803A, VI= 3.85V||0.93|1.35||
|||for ULN2804A, VI= 5V||0.35|0.5||
|||VI= 12V||1|1.45||
|II(OFF)|Input current (Figure 7)|TA= 70°C, IC= 500µA|50|65||µA|
|VI(ON)|Input voltage (Figure 8)|VCE= 2V, for ULN2802A
IC= 300mA
for ULN2803A
IC= 200mA
IC= 250mA
IC= 300mA
for ULN2804A
IC= 125mA
IC= 200mA
IC= 275mA
IC= 350mA|||13
2.4
2.7
3
5
6
7
8|V|
|hFE|DC Forward current gain
(Figure 5)|for ULN2801A, VCE= 2V,
IC= 350mA|1000||||
|CI|Input capacitance|||15|25|pF|
|tPLH|Turn-on delay time|0.5 VIto 0.5VO||0.25|1|µs|
|tPHL|Turn-off delay time|0.5 VIto 0.5VO||0.25|1|µs|
|IR|Clamp diode leakage current
(Figure 9)|VR= 50V|||50|µA|
|||TA= 70°C,VR= 50V|||100||
|VF|Clamp diode forward voltage
(Figure 10)|IF= 350mA||1.7|2|V|
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**Test circuits**
**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
## **5 Test circuits**
**==> picture [419 x 23] intentionally omitted <==**
**----- Start of picture text -----**
Figure 3. Output leakage current Figure 4. Output leakage current (for
ULN2802A only)
**----- End of picture text -----**
## **Figure 5. Collector-emitter saturation voltage Figure 6. Input current (ON)**
**Figure 7. Input current (OFF)**
**Figure 8. Input voltage**
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**Test circuits**
**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
## **Figure 9. Clamp diode leakage current**
## **Figure 10. Clamp diode forward voltage**
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**Typical performance characteristics**
**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
## **6 Typical performance characteristics**
**Figure 11. Collector current as a function of saturation voltage**
**Figure 12. Collector current as a function of input current**
**Figure 13. Allowable average power dissipation as a function of TA**
**Figure 14. Peak collector current as a function of duty cycle**
**Figure 15. Peak collector current as a function of duty cycle**
**Figure 16. Input current as a function of input voltage (for ULN2802A)**
**==> picture [77 x 7] intentionally omitted <==**
**----- Start of picture text -----**
Doc ID 1536 Rev 3
**----- End of picture text -----**
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**Typical performance characteristics**
**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
**Figure 17. Input current as a function of input Figure 18. Input current as a function of input voltage (for ULN2804A) voltage (for ULN2803A)**
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**Package mechanical data**
**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
## **7 Package mechanical data**
In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK[®] packages, depending on their level of environmental compliance. ECOPACK[®] specifications, grade definitions and product status are available at: www.st.com. ECOPACK[®] is an ST trademark.
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**Package mechanical data**
**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
## **Table 5. DIP-18 mechanical data**
|**Dim.**|**mm.**|**mm.**|**mm.**|
|---|---|---|---|
||**Min.**|**Typ.**|**Max.**|
|a1|0.254|||
|B|1.39||1.65|
|b||0.46||
|b1||0.25||
|D|||23.24|
|E||8.5||
|e||2.54||
|e3||20.32||
|F|||7.1|
|I|||3.93|
|L||3.3||
|Z||1.27|1.59|
## **Figure 19. DIP-18 package dimensions**
**==> picture [389 x 227] intentionally omitted <==**
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**Revision history**
**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
## **8 Revision history**
## **Table 6. Document revision history**
|**Date**|**Revision**|**Changes**|
|---|---|---|
|18-Sep-2003|1|First release|
|10-Mar-2010|2|Updated package mechanical data|
|19-Nov-2012|3|Modified input voltage valuesTable 4 on page 6.|
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**ULN2801A, ULN2802A, ULN2803A, ULN2804A**
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Doc ID 1536 Rev 3
## Links
- [View this product on Novapart](https://novapart.co/products/ULN2804A/bipolar-transistor-array-darlington-npn-50-v-500)
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