TLP127(TPL,U,F) - 2500Vrms Darlington Optocoupler SO6 | Toshiba
Артикул: TLP127(TPL,U,F) ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $0.66 | $0,66 |
| 10 | $0.58 | $5,80 |
| 100 | $0.49 | $49,00 |
| 500 | $0.42 | $210,00 |
| 1.000 | $0.38 | $380,00 |
TLP127(TPL,U,F) Обзор
An optocoupler (also called an optoisolator or photocoupler) is a semiconductor device that transmits an electrical signal between two isolated circuits by using an internal LED-phototransistor optical link. The optocoupler category sits inside the broader optoisolator family, which in turn belongs to the signal-conditioning and isolation segment of the power management and interface IC tree. Darlington-output variants such as the TLP127 use a cascaded phototransistor pair to multiply the photo-induced base current, producing very high CTR and eliminating the need for an external driver stage in low-current interfaces.
Key specifications include an isolation voltage of 2500 Vrms, a maximum collector-emitter voltage VCEO of 300 V, an on-state collector current of up to 150 mA, a forward voltage of 1.15 V at IF=10 mA, and a saturation voltage of 1.2 V at IC=100 mA. Switching characteristics are 15 us turn-on and 40 us turn-off measured at IF=10 mA, RL=100 ohm, which is acceptable for relay drivers and DC-output modules where sub-millisecond response is sufficient.
The Darlington architecture combines two bipolar transistors on the receiver die, giving the TLP127 roughly 100x the current gain of a standard phototransistor optocoupler. This lets a 5 mA LED current drive a relay coil that would otherwise require a separate pre-driver, simplifying the BOM. The wide VCEO of 300 V also makes the part useful for 24 V and 48 V industrial buses, and the 2500 Vrms isolation meets IEC 60747-5-5 reinforced insulation requirements for industrial control equipment.
Typical applications include programmable controller DC-output modules, telecommunication line interfaces, solid-state relay drivers, interface modules for measurement equipment, and battery-monitoring isolation in industrial automation. The combination of high CTR and high VCEO enables direct switching of 24 V relays without an external transistor, reducing board area.
When designing with the TLP127, place the input-side current-limiting resistor to set IF between 5 mA and 20 mA and use a flyback diode across inductive loads. The 4-pin SO6 footprint is smaller than a DIP-6 optocoupler, so PCB layout must respect the minimum 5 mm creepage to preserve the rated isolation voltage.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical design guidance not collected in the Toshiba datasheet PDF, helping engineers select and qualify the TLP127(TPL,U,F) for new designs and second-source replacements.
Аналоги без доработки для TLP127(TPL,U,F) — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с TLP127(TPL,U,F) (тот же форм-фактор и посадочное место) — отличается по Package, Collector Current (IC), Collector-Emitter Voltage (VCEO), Forward Current (IF), Input Type.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
TLP127
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
TLP127
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TLP127
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TLP127
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TLP127
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
TLP127(TPL,U,F) Характеристики
| Тип выхода | DC Darlington Phototransistor |
| Number of Channels | 1 |
| Input Type | DC (GaAs IR LED) |
| Forward Voltage VF (typ) | 1.15 V at IF=10 mA |
| Current Transfer Ratio (CTR) min | 1000 % at IF=10 mA, VCE=2 V |
| Collector-Emitter Voltage VCEO (max) | 300 V |
| Collector Current IC (max) | 150 mA |
| Напряжение насыщения коллектор-эмиттер (Vce(sat)) | 1.2 V at IC=100 mA, IF=10 mA |
| Turn-On Time ton | 15 us at IF=10 mA, RL=100 ohm |
| Turn-Off Time toff | 40 us at IF=10 mA, RL=100 ohm |
| Isolation Voltage (rms) | 2500 Vrms |
| Рабочая температура | -55 C to +100 C |
| Корпус | MFSOP6 / SO6 Mini-Flat, 4 lead |
| Тип монтажа | Surface Mount |
| Статус RoHS | Compliant |
Конфигурация выводов TLP127(TPL,U,F)
| Контакт 1 | Anode — LED anode (input side, current in) |
| Контакт 2 | Cathode — LED cathode (input side, ground) |
| Контакт 3 | Emitter — Photodarlington emitter (output side) |
| Контакт 4 | Collector — Photodarlington collector (output side) |
Типичное применение
TLP127(TPL,U,F) подходит для 6 применениеs: Programmable Controller DC-Output Modules, Telecommunication Line Interface Switching, Solid-State Relay (SSR) Driver Stage, Industrial Measurement Equipment Isolation, Battery Management Isolation for Industrial Systems, Medical Equipment Signal Isolation.
Programmable Controller DC-Output Modules
The Toshiba TLP127(TPL,U,F) Darlington optocoupler is designed for DC-output modules in programmable logic controllers (PLCs). Its 1000 % minimum CTR at IF=10 mA and 300 V VCEO rating let a single device switch a 24 V PLC output channel directly, without an external driver transistor. The 2500 Vrms isolation provides reinforced insulation between the logic-side microcontroller and the field-side I/O, satisfying IEC 61131-2 industrial control standards. The 15 us/40 us switching times are fast enough for AC-50/60 Hz zero-crossing debounce and relay de-energizing. Mounted in the SO6 mini-flat package, the TLP127 fits within standard 5 mm channel pitch on PLC I/O terminal boards.
Рекомендуется
Telecommunication Line Interface Switching
In telecom line-interface circuits, the TLP127(TPL,U,F) provides the high-voltage (300 V VCEO) switch required for hook-switch, ringing, or line-test relays. Its 1000 % CTR min at IF=10 mA means the line-side switch operates directly from a 5 V MCU GPIO through a single 470 ohm current-limiting resistor, eliminating the need for a discrete high-voltage pre-driver. The 2500 Vrms isolation withstands surge events on the line side, protecting the central-office controller. The device's 150 mA collector current supports the test-load currents required by telecom line-monitoring standards, and the 1.2 V saturation voltage at 100 mA keeps on-state dissipation low for continuous monitoring.
Рекомендуется
Solid-State Relay (SSR) Driver Stage
The TLP127(TPL,U,F) serves as the input-side isolation stage in solid-state relay assemblies driving 24 V to 240 V AC/DC loads. Its Darlington output (1000 % CTR min, 150 mA) provides the gate drive for triacs or power MOSFETs in zero-crossing SSR designs without an external driver stage. The 2500 Vrms isolation is sufficient for 230 V AC reinforced-insulation SSR modules, and the 4-pin MFSOP6 footprint allows compact PCB layouts behind the relay's heat-sink area. Switching times of 15 us on / 40 us off align with typical 60 Hz line-zero-crossing detection windows, preventing nuisance firing.
Рекомендуется
Industrial Measurement Equipment Isolation
For process-control and test-and-measurement instruments, the TLP127(TPL,U,F) provides reinforced isolation between sensor-side analog circuits (4-20 mA loops, thermocouples) and the data-acquisition MCU. The 2500 Vrms isolation barrier meets IEC 61010-1 measurement equipment safety requirements, while the 300 V VCEO rating ensures the output can drive high-voltage analog switches or signal-conditioning multiplexers. Its 1000 % CTR min delivers reliable switching for sample-and-hold stages from a low-current MCU GPIO. The -55 C to +100 C operating temperature range covers industrial enclosure environments without derating.
Рекомендуется
Battery Management Isolation for Industrial Systems
In battery management systems (BMS) for industrial UPS or 48 V telecom battery banks, the TLP127(TPL,U,F) isolates the high-voltage battery stack from the low-voltage monitoring MCU. Its 300 V VCEO easily tolerates the 48 V stack voltage plus transient ringing, and the 2500 Vrms isolation prevents ground-loop faults from propagating into the controller. The 1000 % CTR minimum ensures reliable drive to the balancing FET gate drivers from a 3.3 V GPIO. The 4-pin SO6 mini-flat footprint keeps the isolation stage compact on densely populated BMS PCBs, while the 1.2 V saturation voltage keeps quiescent drain low during standby.
Рекомендуется
Medical Equipment Signal Isolation
The TLP127(TPL,U,F) reinforces patient-isolation boundaries in medical electrical equipment such as patient monitors and infusion pumps. Its 2500 Vrms isolation supports IEC 60601-1 reinforced-insulation requirements for patient-applied circuits when used in conjunction with other isolation components, while the 1000 % CTR minimum ensures reliable switching of relay-driven patient-side circuits from the MCU. The 300 V VCEO tolerates defibrillator-discharge transients on the patient side when combined with external protection. The 4-pin MFSOP6 mini-flat footprint allows compact isolation-stage placement on small medical-device PCBs.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для TLP127(TPL,U,F) — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | TLP127(V4-TPR,U,F) | TLP127(PSE-TPL,U,F) | TLP127(U,F) | TLP127(ITO-TPR,F) | TLP127(KOSD-TPL,F) |
|---|---|---|---|---|---|---|
| Package | MFSOP6 (4-lead Mini-Flat) | MFSOP6 (4-lead Mini-Flat) - same | MFSOP6 (4-lead Mini-Flat) - same | MFSOP6 (4-lead Mini-Flat) - same | MFSOP6 (4-lead Mini-Flat) - same | MFSOP6 (4-lead Mini-Flat) - same |
| Brand | Toshiba | Toshiba - same | Toshiba - same | Toshiba - same | Toshiba - same | Toshiba - same |
| Output Type | Darlington Phototransistor (DC) | Darlington Phototransistor (DC) | Darlington Phototransistor (DC) | Darlington Phototransistor (DC) | Darlington Phototransistor (DC) | Darlington Phototransistor (DC) |
| CTR (minimum) | 1000 % | 1000 % | 1000 % | 1000 % | 1000 % | 1000 % |
| VCEO (max) | 300 V | 300 V | 300 V | 300 V | 300 V | 300 V |
| Collector Current (max) | 150 mA | 150 mA | 150 mA | 150 mA | 150 mA | 150 mA |
| Isolation Voltage | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms | 2500 Vrms |
| Turn-On Time (typ) | 15 us | 15 us | 15 us | 15 us | 15 us | 15 us |
| Turn-Off Time (typ) | 40 us | 40 us | 40 us | 40 us | 40 us | 40 us |
Ключевые отличия
- 1000 % minimum current transfer ratio in a 4-pin SO6 package (против TLP127(U,F))
- 300 V VCEO rating supports 24 V and 48 V industrial bus switching (против TLP521-1 (Toshiba))
- Darlington output eliminates external pre-driver stage (против Toshiba TLP627 transistor-output optocoupler)
Заметки по проектированию
Size the input-side current-limiting resistor R = (VCC - VF) / IF. With VCC=5 V, VF=1.15 V (typ) and IF=10 mA, R = (5 - 1.15) / 0.010 = 385 ohm; a 390 ohm standard value yields IF=9.9 mA, just below the 10 mA test condition used for the 1000 % CTR minimum specification. Estimated: resistor calculated from VF typ and IF target; consult the datasheet curve for CTR vs IF if lower IF is required.
Do not exceed absolute maximum ratings: forward current 50 mA, peak transient forward current 1 A for 10 us, collector current 150 mA, VCEO 300 V, VECO 5 V. Reverse-voltage on the LED is limited to 5 V - never drive the LED from a polarity-reversed source. Failure to observe these limits may damage the GaAs LED or the photodarlington receiver die.
Maintain at least 5 mm of creepage distance between input-side and output-side copper on the PCB to preserve the 2500 Vrms isolation rating; placing copper traces or vias under the SO6 package body shortens the effective clearance. Avoid routing high-voltage output traces directly under the device. The MFSOP6 package does not have an internal insulation barrier beyond the molded compound, so PCB layout is the only way to guarantee the rated isolation voltage.
The TLP127's total power dissipation is approximately P_total = (VF x IF) + (VCE(sat) x IC). At IF=10 mA, VF=1.15 V, IC=100 mA, VCE(sat)=1.2 V, the dissipation is 0.012 W (input) + 0.120 W (output) = 0.132 W per channel. Estimated: based on typ VF and VCE(sat) at the specified test conditions; thermal resistance is not separately specified in the LCSC summary but the operating temperature range of -55 C to +100 C is well within the safe area for this power level.
Информация о соответствии
RoHS compliant per Toshiba product family datasheet. Not AEC-Q100 qualified - this part is intended for industrial/consumer use, not automotive. Reinforced insulation tested per IEC 60747-5-5 opto-isolator standard.
