# Bipolar Transistor Array, Dual NPN, 8 A, 20 W

![Product image](https://novapart.co/image/farnell:4036346/)

**URL**: https://novapart.co/products/MJD122-1/bipolar-transistor-array-dual-npn-8-a-20-w
**SKU**: MJD122-1
**Manufacturer**: STMICROELECTRONICS
**Category**: Semiconductors - Discretes || Transistors || Bipolar Transistors || Bipolar Junction Transistor Arrays - BJT
**Price**: €0.3260
**Stock**: 10+

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| No. Of Pins | 3Pins |
| Product Range | - |
| Qualification | - |
| Transistor Mounting | Through Hole |
| Transistor Polarity | Dual NPN |
| Power Dissipation Npn | 20W |
| Power Dissipation Pnp | - |
| Transistor Case Style | TO-251 (IPAK) |
| Transition Frequency Npn | - |
| Transition Frequency Pnp | - |
| Operating Temperature Max | 150°C |
| Dc Current Gain Hfe Min Npn | 100hFE |
| Dc Current Gain Hfe Min Pnp | - |
| Continuous Collector Current Npn | 8A |
| Continuous Collector Current Pnp | - |
| Collector Emitter Voltage Max Npn | - |
| Collector Emitter Voltage Max Pnp | - |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4036346/)

**MJD122** 

Low voltage power Darlington transistor 

**==> picture [61 x 39] intentionally omitted <==**

## **Features** 

- Low base drive requirements 

- Integrated antiparallel collector-emitter diode 

- Through hole TO-251 (IPAK) power package in tube (suffix “-1”) 

- Surface mounting TO-252 (DPAK) power package in tape & reel (suffix “T4”) 

## **Applications** 

- General purpose switching and amplifier 

**==> picture [164 x 101] intentionally omitted <==**

**----- Start of picture text -----**<br>
3<br>3<br>2 1<br>1<br>TO-251 TO-252<br>IPAK DPAK<br>(suffix “-1”)  (suffix “T4”)<br>**----- End of picture text -----**<br>


## **Description** 

The device is manufactured using Epitaxial-base technology for high performance. PNP type is MJD127. 

## **Figure 1. Internal schematic diagram** 

**==> picture [122 x 107] intentionally omitted <==**

R1 typ. =10 KW R2 typ. =150 W 

**Table 1. Device summary** 

|**Order code**|**Marking**|**Package**|**Packaging**|
|---|---|---|---|
|MJD122T4|MJD122|TO-252 (DPAK)|Tape & reel|
|MJD122-1|MJD122|TO-251 (IPAK)|Tube|



October 2007 

1/9 

Rev 10 

_www.st.com_ 

**Electrical ratings** 

**MJD122** 

## **1 Electrical ratings** 

## **Table 2. Absolute maximum rating** 

|**Table 2.**|**Absolute maximum rating**|||
|---|---|---|---|
|**Symbol**|**Parameter**|**Value**|**Unit**|
|VCBO|Collector-base voltage (IE= 0)|100|V|
|VCEO|Collector-base voltage (IB= 0)|100|V|
|VEBO|Emitter-base voltage (IC= 0)|5|V|
|IC|Collector current|8|A|
|ICM|Collector peak current|16|A|
|IB|Base current|0.12|A|
|PTOT|Total dissipation at Tcase= 25°C<br>Total dissipation at Tamb= 25°C|20<br>1.75|W<br>W|
|Tstg|Storage temperature|-65 to 150|°C|
|TJ|Max. operating junction temperature|150|°C|



2/9 

**Electrical characteristics** 

**MJD122** 

## **2 Electrical characteristics** 

(Tcase = 25°C unless otherwise specified) 

## **Table 3. Electrical characteristics** 

|**Symbol**|**Parameter**|**Test Conditions**|**Min.**|**Typ.**|**Max.**|**Unit**|
|---|---|---|---|---|---|---|
|ICBO|Collector cut-off current<br>(IE= 0)|VCB= 100 V|||10|µA|
|ICEO|Collector cut-off current<br>(IB= 0)|VCE= 50 V|||10|µA|
|IEBO|Emitter cut-off current<br>(IC= 0)|VEB= 5V|||2|mA|
|VCEO(sus)<br>(1)|Collector-emitter<br>sustaining voltage<br>(IB= 0)|IC=30 mA|100|||V|
|VCE(sat)<br>(1)|Collector-emitter<br>saturation voltage|IC= 4 A_IB= 16 mA<br>IC= 8 A_IB= 80 mA|||2<br>4|V<br>V|
|VBE(sat)<br>(1)|Base-emitter saturation<br>voltage|IC= 8 A_IB= 80 mA|||4.5|V|
|VBE(on)<br>(1)|Base-emitter on voltage|IC= 4 A_VCE= 4 V|||2.8|V|
|hFE|DC current gain|IC= 4A            VCE= 4 V<br>IC= 8 A           VCE= 4 V|1000<br>100||12000||



Note (1) Pulsed duration = 300 µ s, duty cycle ≤ 1.5% 

## **2.1 Electrical characteristic (curves)** 

## **Figure 2. Safe operating area** 

## **Figure 3. Derating curve** 

**==> picture [136 x 134] intentionally omitted <==**

**==> picture [138 x 139] intentionally omitted <==**

3/9 

**Electrical characteristics** 

**MJD122** 

**Figure 4. Collector-emitter saturation voltage** 

**==> picture [141 x 135] intentionally omitted <==**

**Figure 5. Base-emitter saturation voltage** 

**==> picture [142 x 135] intentionally omitted <==**

**Figure 6. Base-emitter on voltage** 

**Figure 7. DC current gain** 

**==> picture [141 x 136] intentionally omitted <==**

**==> picture [136 x 136] intentionally omitted <==**

**Figure 8. Resistive load switching time Figure 9. Freewheel diode forward voltage** 

**==> picture [141 x 133] intentionally omitted <==**

**==> picture [146 x 140] intentionally omitted <==**

4/9 

**Package mechanical data** 

**MJD122** 

## **3 Package mechanical data** 

In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com 

5/9 

**Package mechanical data** 

**MJD122** 

**==> picture [381 x 579] intentionally omitted <==**

**----- Start of picture text -----**<br>
TO-251 (IPAK) MECHANICAL DATA<br>mm inch<br>DIM.<br>MIN. TYP. MAX. MIN. TYP. MAX.<br>A 2.20 2.40 0.087 0.094<br>A1 0.90 1.10 0.035 0.043<br>A3 0.70 1.30 0.028 0.051<br>B 0.64 0.90 0.025 0.035<br>B2 5.20 5.40 0.204 0.213<br>B3 0.85 0.033<br>B5 0.30 0.012<br>B6 0.95 0.037<br>C 0.45 0.60 0.018 0.024<br>C2 0.48 0.60 0.019 0.024<br>D 6.00 6.20 0.237 0.244<br>E 6.40 6.60 0.252 0.260<br>G 4.40 4.60 0.173 0.181<br>H 15.90 16.30 0.626 0.642<br>L 9.00 9.40 0.354 0.370<br>L1 0.80 1.20 0.031 0.047<br>L2 0.80 1.00 0.031 0.039<br>V1 10 [o] 10 [o]<br>P032N_E<br>**----- End of picture text -----**<br>


6/9 

**Package mechanical data** 

**MJD122** 

## **TO-252 (DPAK) MECHANICAL DATA** 

||**DIM**||||||**mm**|||**inch**|**inch**|
|---|---|---|---|---|---|---|---|---|---|---|---|
||**.**|||**MI**|**N.**||**TYP.**|**MAX**|**.**<br>**M**|**IN.**<br>**TYP.**|**MAX.**|
||A|||2.2|0|||2.40|0.|087|0.094|
||A1|||0.9|0|||1.10|0.|035|0.043|
||A2|||0.0|3|||0.23|0.|001|0.009|
||B|||0.6|4|||0.90|0.|025|0.035|
||B2|||5.2|0|||5.40|0.|204|0.213|
||C|||0.4|5|||0.60|0.|018|0.024|
||C2|||0.4|8|||0.60|0.|019|0.024|
||D|||6.0|0|||6.20|0.|236|0.244|
||E|||6.4|0|||6.60|0.|252|0.260|
||G|||4.4|0|||4.60|0.|173|0.181|
||H|||9.3|5|||10.1|0<br>0.|368|0.398|
||L2||||||0.8|||0.031||
||L4|||0.6|0|||1.00|0.|024|0.039|
||V2|||0o||||8o|0|o|0o|
|||||||||||||
|||||||||||P032P_B||
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7/9 

**Revision history** 

**MJD122** 

## **4 Revision history** 

**Table 4. Document revision history** 

|**Date**|**Revision**|**Changes**|
|---|---|---|
|01-Aug-2002|8||
|01-Oct-2007|9|Collector current limits have been improved.|
|03-Oct-2007|10|Package change from SOT-32 to TO-252.|



8/9 

**MJD122** 

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9/9 



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