Product Overview
This series of NPN Silicon Surface Mount Transistors with Monolithic Bias Resistor Networks (BRT) is designed to integrate a single transistor with its external bias resistor network. Each BRT contains a single transistor with a monolithic bias network consisting of a series base resistor and a base-emitter resistor. This integration eliminates the need for individual external components, simplifying circuit design, reducing board space, and lowering component count. The devices are housed in the SOT-23 package, suitable for low-power surface mount applications. The SOT-23 package features modified gull-winged leads that absorb thermal stress during soldering, preventing damage to the die. Devices are available on 8 mm embossed tape and reel.
Transistor TypeNPN Silicon
Network TypeMonolithic Bias Resistor Network (BRT)
ApplicationLow Power Surface Mount
Device Marking and Resistor Values
| Device Marking | R1 (K) | R2 (K) |
|---|
| A8A | 10 | 10 |
| A8B | 22 | 22 |
| A8C | 47 | 47 |
| A8D | 10 | 47 |
| A8E | 10 | |
| A8F | 4.7 | |
| A8G | 1.0 | 1.0 |
| A8H | 2.2 | 2.2 |
| A8J | 4.7 | 4.7 |
| A8K | 4.7 | 47 |
| A8L | 22 | 47 |
| A8M | 2.2 | 47 |
| A8R | 2.2 | |
| A8U | 100 | |
Maximum Ratings
| Rating | Symbol | Value | Unit |
|---|
| Collector-Base Voltage | VCBO | 50 | Vdc |
| Collector-Emitter Voltage | VCEO | 50 | Vdc |
| Collector Current | IC | 100 | mAdc |
| Total Power Dissipation @ TA = 25C (Note 1.) | PD | 200 | mW |
| Derate above 25C | | 1.6 | mW/C |
Electrical Characteristics (TA = 25C unless otherwise noted)
| Characteristic | Symbol | Min | Typ | Max | Unit |
|---|
| Collector-Base Cutoff Current (VCB = 50 V, IE = 0) | ICBO | | | 100 | nAdc |
| Collector-Emitter Cutoff Current (VCE = 50 V, IB = 0) | ICEO | | | 500 | nAdc |
| Collector-Base Breakdown Voltage (IC = 10 A, IE = 0) | V(BR)CBO | 50 | | | Vdc |
| Collector-Emitter Breakdown Voltage (Note 2.), (IC = 2.0 mA, IB = 0) | V(BR)CEO | 50 | | | Vdc |
ON Characteristics (Note 2.)
| Characteristic | Model | Min | Typ | Max | Unit |
|---|
| DC Current Gain (VCE = 10 V, IC = 5.0 mA) | MMUN2211 | 35 | | | |
| MMUN2212 | 60 | | |
| MMUN2213 | 80 | | |
| MMUN2214 | 80 | | |
| MMUN2215 | 160 | | |
| MMUN2216 | 160 | | |
| MMUN2230 | 3.0 | | |
| MMUN2231 | 8.0 | | |
| MMUN2232 | 15 | | |
| MMUN2233 | 80 | | |
| MMUN2234 | 80 | | |
| MMUN2235 | 80 | | |
| MMUN2238 | 160 | | |
| MMUN2241 | 160 | | |
| Collector-Emitter Saturation Voltage (IC = 10 mA, IB = 0.3 mA) | All Models | | | 0.25 | Vdc |
| (IC = 10 mA, IB = 5 mA) | All Models | | | 0.25 | Vdc |
| Output Voltage (on) (VCC = 5.0 V, RL = 1.0 k ) | MMUN2211 (VB = 2.5 V) | | | 0.2 | Vdc |
| MMUN2212 (VB = 3.5 V) | | | 0.2 |
| MMUN2213 (VB = 5.0 V) | | | 0.2 |
| MMUN2214 (VB = 2.5 V) | | | 0.2 |
| MMUN2215 (VB = 2.5 V) | | | 0.2 |
| MMUN2216 (VB = 2.5 V) | | | 0.2 |
| MMUN2230 (VB = 2.5 V) | | | 0.2 |
| MMUN2231 (VB = 2.5 V) | | | 0.2 |
| MMUN2232 (VB = 2.5 V) | | | 0.2 |
| MMUN2233 (VB = 2.5 V) | | | 0.2 |
| MMUN2234 (VB = 2.5 V) | | | 0.2 |
| MMUN2235 (VB = 2.5 V) | | | 0.2 |
| MMUN2238 (VB = 2.5 V) | | | 0.2 |
| MMUN2241 (VB = 2.5 V) | | | 0.2 |
| Output Voltage (off) (VCC = 5.0 V, RL = 1.0 k ) | MMUN2230 (VB = 0.050 V) | 4.9 | | | Vdc |
| MMUN2215 (VB = 0.25 V) | 4.9 | | |
| MMUN2216 (VB = 0.25 V) | 4.9 | | |
| MMUN2233 (VB = 0.25 V) | 4.9 | | |
| MMUN2238 (VB = 0.25 V) | 4.9 | | |
Resistor Values
| Model | R1 (k) | R2 (k) | R1/R2 Ratio |
|---|
| MMUN2211 | 7.0 | 10 | 0.8 |
| MMUN2212 | 15.4 | 22 | 0.8 |
| MMUN2213 | 32.9 | 47 | 0.8 |
| MMUN2214 | 7.0 | 10 | 0.17 |
| MMUN2215 | 7.0 | 10 | 1.0 |
| MMUN2216 | 3.3 | 4.7 | 1.0 |
| MMUN2230 | 0.7 | 1.0 | 0.21 |
| MMUN2231 | 1.5 | 2.2 | 0.21 |
| MMUN2232 | 3.3 | 4.7 | 0.21 |
| MMUN2233 | 3.3 | 47 | 0.055 |
| MMUN2234 | 15.4 | 47 | 0.38 |
| MMUN2235 | 2.2 | 47 | 0.038 |
| MMUN2238 | 2.2 | | 1.2 |
| MMUN2241 | 100 | | 1.2 |
