component
BD438
Public Made by Adomby adom
STMicroelectronics Bipolar (BJT), TO-126-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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bd438: specified limits as data (metadata.characteristics, 20 rows from the datasheet)
2 files changed
+274
README.md+27@@ -21,6 +21,33 @@ BD438 from STMicroelectronics, in a TO-126-3. Pinout and pin descriptions extrac | Category | Transistors/Thyristors | | Pins | 3 | +## Electrical characteristics++Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).++| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |+|---|---|---|---|---|---|---|---|+| Collector-Base Voltage | VCBO | | | 45 | V | IE = 0; PNP BD438 column (datasheet note: PNP voltage/current values are negative) | 1 |+| Collector-Emitter Voltage | VCES | | | 45 | V | VBE = 0; PNP BD438 column (datasheet note: PNP voltage/current values are negative) | 1 |+| Emitter-Base Voltage | VEBO | | | 5 | V | IC = 0 | 1 |+| Collector Current | IC | | | 4 | A | | 1 |+| Collector Peak Current | ICM | | | 7 | A | t ≤ 10 ms | 1 |+| Base Current | IB | | | 1 | A | | 1 |+| Total Dissipation | Ptot | | | 36 | W | Tc ≤ 25 °C | 1 |+| Storage Temperature | Tstg | -65 | | 150 | °C | | 1 |+| Max. Operating Junction Temperature | Tj | | | 150 | °C | | 1 |+| Thermal Resistance Junction-case Max | Rthj-case | | | 3.5 | °C/W | | 2 |+| Thermal Resistance Junction-ambient Max | Rthj-amb | | | 100 | °C/W | | 2 |+| Collector Cut-off Current (IE = 0) | ICBO | | | 100 | µA | for BD437/438 VCB = 45 V | 2 |+| Collector Cut-off Current (VBE = 0) | ICES | | | 100 | µA | for BD437/438 VCE = 45 V | 2 |+| Emitter Cut-off Current (IC = 0) | IEBO | | | 1 | mA | VEB = 5 V | 2 |+| Collector-Emitter Sustaining Voltage (IB = 0) | VCEO(sus) | 45 | | | V | IC = 100 mA for BD437/438; pulsed: pulse duration 300 µs, duty cycle 1.5 % | 2 |+| Collector-Emitter Saturation Voltage | VCE(sat) | | | 0.6 | V | IC = 2 A, IB = 0.2 A for BD437/438; pulsed: pulse duration 300 µs, duty cycle 1.5 % | 2 |+| Base-Emitter Voltage | VBE | | | 0.58 | V | IC = 10 mA, VCE = 5 V; pulsed: pulse duration 300 µs, duty cycle 1.5 % | 2 |+| Base-Emitter Voltage | VBE | | | 1.2 | V | IC = 2 A, VCE = 1 V for BD437/438; pulsed: pulse duration 300 µs, duty cycle 1.5 % | 2 |+| DC Current Gain | hFE | 30 | | | | IC = 10 mA, VCE = 5 V for BD437/438; pulsed: pulse duration 300 µs, duty cycle 1.5 % | 2 |+| Matched Pair DC Current Gain Ratio | hFE1/hFE2 | | | 1.4 | | IC = 500 mA, VCE = 1 V; pulsed: pulse duration 300 µs, duty cycle 1.5 % | 2 |+ ## CAD (KiCad official) - Symbol: `BD438`
page.json+247@@ -133,6 +133,253 @@ "Package": "TO-126-3", "Category": "Transistors/Thyristors", "Pins": "3"+ },+ "characteristics": {+ "version": 1,+ "source": "datasheet",+ "datasheet_sha256": "eff0c287adc6d211",+ "rows": [+ {+ "name": "Collector-Base Voltage",+ "symbol": "VCBO",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 45,+ "conditions": "IE = 0; PNP BD438 column (datasheet note: PNP voltage/current values are negative)",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Collector-Emitter Voltage",+ "symbol": "VCES",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 45,+ "conditions": "VBE = 0; PNP BD438 column (datasheet note: PNP voltage/current values are negative)",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Emitter-Base Voltage",+ "symbol": "VEBO",+ "kind": "absolute_maximum",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 5,+ "conditions": "IC = 0",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Collector Current",+ "symbol": "IC",+ "kind": "absolute_maximum",+ "unit": "A",+ "min": null,+ "typ": null,+ "max": 4,+ "conditions": "",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Collector Peak Current",+ "symbol": "ICM",+ "kind": "absolute_maximum",+ "unit": "A",+ "min": null,+ "typ": null,+ "max": 7,+ "conditions": "t ≤ 10 ms",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Base Current",+ "symbol": "IB",+ "kind": "absolute_maximum",+ "unit": "A",+ "min": null,+ "typ": null,+ "max": 1,+ "conditions": "",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Total Dissipation",+ "symbol": "Ptot",+ "kind": "absolute_maximum",+ "unit": "W",+ "min": null,+ "typ": null,+ "max": 36,+ "conditions": "Tc ≤ 25 °C",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Storage Temperature",+ "symbol": "Tstg",+ "kind": "absolute_maximum",+ "unit": "°C",+ "min": -65,+ "typ": null,+ "max": 150,+ "conditions": "",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Max. Operating Junction Temperature",+ "symbol": "Tj",+ "kind": "absolute_maximum",+ "unit": "°C",+ "min": null,+ "typ": null,+ "max": 150,+ "conditions": "",+ "source_page": 1,+ "source": "datasheet"+ },+ {+ "name": "Thermal Resistance Junction-case Max",+ "symbol": "Rthj-case",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": null,+ "max": 3.5,+ "conditions": "",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Thermal Resistance Junction-ambient Max",+ "symbol": "Rthj-amb",+ "kind": "thermal",+ "unit": "°C/W",+ "min": null,+ "typ": null,+ "max": 100,+ "conditions": "",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Collector Cut-off Current (IE = 0)",+ "symbol": "ICBO",+ "kind": "electrical",+ "unit": "µA",+ "min": null,+ "typ": null,+ "max": 100,+ "conditions": "for BD437/438 VCB = 45 V",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Collector Cut-off Current (VBE = 0)",+ "symbol": "ICES",+ "kind": "electrical",+ "unit": "µA",+ "min": null,+ "typ": null,+ "max": 100,+ "conditions": "for BD437/438 VCE = 45 V",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Emitter Cut-off Current (IC = 0)",+ "symbol": "IEBO",+ "kind": "electrical",+ "unit": "mA",+ "min": null,+ "typ": null,+ "max": 1,+ "conditions": "VEB = 5 V",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Collector-Emitter Sustaining Voltage (IB = 0)",+ "symbol": "VCEO(sus)",+ "kind": "electrical",+ "unit": "V",+ "min": 45,+ "typ": null,+ "max": null,+ "conditions": "IC = 100 mA for BD437/438; pulsed: pulse duration 300 µs, duty cycle 1.5 %",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Collector-Emitter Saturation Voltage",+ "symbol": "VCE(sat)",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 0.6,+ "conditions": "IC = 2 A, IB = 0.2 A for BD437/438; pulsed: pulse duration 300 µs, duty cycle 1.5 %",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Base-Emitter Voltage",+ "symbol": "VBE",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 0.58,+ "conditions": "IC = 10 mA, VCE = 5 V; pulsed: pulse duration 300 µs, duty cycle 1.5 %",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Base-Emitter Voltage",+ "symbol": "VBE",+ "kind": "electrical",+ "unit": "V",+ "min": null,+ "typ": null,+ "max": 1.2,+ "conditions": "IC = 2 A, VCE = 1 V for BD437/438; pulsed: pulse duration 300 µs, duty cycle 1.5 %",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "DC Current Gain",+ "symbol": "hFE",+ "kind": "electrical",+ "unit": "",+ "min": 30,+ "typ": null,+ "max": null,+ "conditions": "IC = 10 mA, VCE = 5 V for BD437/438; pulsed: pulse duration 300 µs, duty cycle 1.5 %",+ "source_page": 2,+ "source": "datasheet"+ },+ {+ "name": "Matched Pair DC Current Gain Ratio",+ "symbol": "hFE1/hFE2",+ "kind": "electrical",+ "unit": "",+ "min": null,+ "typ": null,+ "max": 1.4,+ "conditions": "IC = 500 mA, VCE = 1 V; pulsed: pulse duration 300 µs, duty cycle 1.5 %",+ "source_page": 2,+ "source": "datasheet"+ }+ ] } }, "variants": [],