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HomeProductsIsolatorsOptoisolators - Transistor, Photovoltaic OutputACPL-M43T-000E
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ACPL-M43T-000E - Broadcom Limited

Manufacturer Part Number
ACPL-M43T-000E
Manufacturer
Avago Technologies (Broadcom)
Allelco Part Number
32D-ACPL-M43T-000E
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
20,611 pcs available, New & Original
Parts Description
OPTOISOLATOR 4KV TRANSISTOR 5-SO
Package
5-SO
Data sheet
ACPL-M43T-000E.pdf

PCN Assembly/Origin

Test/Saw Site Add 21/Nov/2016.pdf
RoHs Status
ROHS3 Compliant
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In stock: 20611
  • Unit Price: $1.997
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $1.997 $2.00
10+ $1.95 $19.50
30+ $1.919 $57.57
100+ $1.888 $188.80
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Specifications

ACPL-M43T-000E Tech Specifications
Broadcom Limited - ACPL-M43T-000E technical specifications, attributes, parameters and parts with similar specifications to Broadcom Limited - ACPL-M43T-000E

Product Attribute Attribute Value
Manufacturer Avago Technologies (Broadcom)
Voltage - Output (Max) 20V
Voltage - Isolation 4000Vrms
Voltage - Forward (Vf) (Typ) 1.55V
Vce Saturation (Max) -
Turn On / Turn Off Time (Typ) 150ns, 500ns
Supplier Device Package 5-SO
Series Automotive, AEC-Q100, R²Coupler™
Rise / Fall Time (Typ) -
Package / Case 6-SOIC (0.173", 4.40mm Width), 5 Leads
Package Tube
Product Attribute Attribute Value
Output Type Transistor
Operating Temperature -40°C ~ 125°C
Number of Channels 1
Mounting Type Surface Mount
Input Type DC
Current Transfer Ratio (Min) 32% @ 10mA
Current Transfer Ratio (Max) 100% @ 10mA
Current - Output / Channel 8mA
Current - DC Forward (If) (Max) 20 mA
Base Product Number ACPL-M43

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8541.49.8000

Frequently Asked Questions(FAQ)

What isolation voltage rating does the ACPL-M43T-000E provide, and how does it affect circuit design safety margins?
The ACPL-M43T-000E is rated for 4000Vrms isolation, which establishes the maximum continuous voltage differential that can safely exist between the input and output sides. In automotive and industrial designs, this 4000Vrms rating on the ACPL-M43T-000E provides a substantial safety margin above typical 48V, 400V, or even 600V bus systems when accounting for transient overvoltage and creepage distance requirements. The isolation voltage determines both the physical spacing and material properties in the device; designers using the ACPL-M43T-000E should verify that actual circuit voltages remain well below the rated 4000Vrms to preserve reliability, particularly in systems with high dV/dt switching edges or potential fault conditions.
Why does the ACPL-M43T-000E have a Current Transfer Ratio range from 32% to 100% at 10mA input, and how should this affect component selection?
The ACPL-M43T-000E exhibits a wide Current Transfer Ratio (CTR) specification window because LED output and phototransistor gain vary across the manufacturing process and temperature. At 10mA input forward current, the ACPL-M43T-000E CTR can range from 32% to 100%, meaning output collector current varies from 3.2mA to 10mA under identical bias conditions. Designs must account for this spread by either (1) using input currents well above the 10mA minimum to ensure predictable output margins, or (2) implementing feedback or thresholding that does not depend on absolute CTR value. In gate-drive applications, the ACPL-M43T-000E's minimum 32% CTR at 10mA establishes the baseline pulldown or switching speed; operating at higher input currents (up to 20mA max on the ACPL-M43T-000E) shifts typical CTR closer to the upper range and reduces part-to-part variation impact.
How do the 150ns turn-on and 500ns turn-off times of the ACPL-M43T-000E limit switching frequency in motor drive or converter applications?
The ACPL-M43T-000E specifies typical turn-on time of 150ns and turn-off time of 500ns, establishing the minimum propagation delay and recovery time between input signal change and output response. In PWM gate-drive circuits, these timings mean the ACPL-M43T-000E introduces approximately 650ns of total switching latency (150ns + 500ns), which at 20kHz PWM corresponds to roughly 1.3% of the switching period—generally acceptable for standard motor control. However, at higher frequencies (50kHz to 100kHz), the ACPL-M43T-000E's turn-off delay of 500ns becomes a larger timing budget fraction, potentially requiring careful dead-time insertion to prevent shoot-through. The asymmetric on/off times of the ACPL-M43T-000E also mean rising and falling edge slew rates differ; systems relying on edge-triggered logic should account for the slower 500ns fall time.
What is the maximum output current capability of the ACPL-M43T-000E, and when should a separate gate driver stage be used?
The ACPL-M43T-000E is specified for 8mA maximum output current per channel, which is sufficient to directly drive small-signal MOSFETs or logic inputs but generally insufficient for high-capacitance gate loads or high-frequency switching. When the ACPL-M43T-000E drives a power MOSFET gate directly, the 8mA output current limits dV/dt slew rate; for example, a 5nF gate capacitance charged at 8mA produces approximately 1.6V/µs rise rate. In high-frequency buck converters or three-phase inverters where faster switching edges reduce EMI and improve efficiency, the ACPL-M43T-000E's 8mA output is often used to trigger a secondary gate driver IC rather than driving the MOSFET gate directly, allowing the ACPL-M43T-000E to maintain isolation while delegating high-current drive to a non-isolated stage.
How does the automotive qualification (AEC-Q100) of the ACPL-M43T-000E affect its reliability profile compared to commercial-grade optoisolators?
The ACPL-M43T-000E carries AEC-Q100 qualification, confirming it has undergone enhanced stress testing (thermal cycling, thermal shock, moisture resistance, electrostatic discharge) and uses screening criteria tailored to automotive environments. AEC-Q100 qualification of the ACPL-M43T-000E means failures in critical operating zones (-40°C to 125°C) have been characterized and mitigated through design or material selection. Compared to unqualified optoisolators, the ACPL-M43T-000E exhibits lower risk of latent defects in high-temperature engine compartments or low-temperature cold-start conditions. The ACPL-M43T-000E's MSL 1 rating (unlimited floor-life moisture sensitivity) further supports automotive reliability by eliminating bake-out requirements and reducing humidity-induced parametric drift during storage and assembly.
Between the ACPL-M43T-000E and the PS8101-V-A substitute, which offers better performance in isolated DC-DC converter feedback loops?
The ACPL-M43T-000E and PS8101-V-A are both single-channel optoisolators with comparable isolation ratings and general optoisolator topology, but differ in CTR specifications and propagation delay. The ACPL-M43T-000E specifies 32–100% CTR at 10mA with 150ns/500ns on/off times, while the PS8101-V-A typically targets tighter CTR tolerance and lower propagation delay. In DC-DC converter feedback loops where signal-to-noise ratio and feedback loop bandwidth matter, the ACPL-M43T-000E's wider CTR window necessitates higher input current or gain adjustment to maintain consistent loop gain across temperature and process corners. If the feedback design already includes automatic gain control or output voltage trimming, the ACPL-M43T-000E and PS8101-V-A perform equivalently; if tight loop-gain consistency is required without post-tuning, the PS8101-V-A may offer an advantage, though cost difference and supply-chain availability often make the ACPL-M43T-000E the preferred choice.
What input current range should be used with the ACPL-M43T-000E to ensure reliable operation across temperature and component variation?
The ACPL-M43T-000E is specified with forward voltage (Vf) of 1.55V typical and forward current (If) maximum of 20mA. To ensure reliable LED turn-on and predictable CTR, input current should be held between 10mA (the CTR specification point) and 20mA (the absolute maximum). Below 10mA, CTR becomes poorly characterized, and the ACPL-M43T-000E output may become unreliable at temperature extremes (-40°C to 125°C). Above 20mA, the ACPL-M43T-000E LED ages more rapidly and forward voltage may increase, reducing available drive voltage at the source. For robust designs, the ACPL-M43T-000E should be operated at 15–18mA input current, providing CTR margin above the 32% minimum and allowing 2–5mA of headroom before the 20mA limit; this practice mitigates process corner and temperature-induced CTR variation while extending LED lifetime.
Why does the ACPL-M43T-000E use a 5-SO package instead of a larger 8-pin SOIC, and what are the trade-offs?
The ACPL-M43T-000E is offered in a 5-SO (6-SOIC physical size, 5 leads) package because single-channel optoisolators require only one LED circuit and one phototransistor output, plus common pins; the reduced lead count minimizes footprint and cost compared to multi-channel devices. The 5-SO package of the ACPL-M43T-000E reduces PCB area by approximately 30–40% versus an 8-pin SOIC, valuable in space-constrained automotive modules and power electronics. However, the compact 5-SO form factor of the ACPL-M43T-000E offers less flexibility for via placement and thermal dissipation; if multiple isolated channels are needed, the ACPL-M43T-000E requires multiple components, whereas a 16-pin multi-channel device would integrate them. Designers should evaluate the ACPL-M43T-000E's package footprint against the actual isolation channel count required rather than defaulting to larger integrated devices.
How does the ACPL-M43T-000E's maximum output voltage of 20V constrain circuit design compared to 24V or 48V logic supply systems?
The ACPL-M43T-000E phototransistor output is rated for maximum 20V collector voltage, meaning the output stage must remain within a 20V supply domain. In isolated gate-drive applications where the secondary side runs from a 24V or 48V supply, the ACPL-M43T-000E cannot be connected directly to such supplies; instead, the ACPL-M43T-000E output must drive a small-signal stage powered from a separate 15–20V auxiliary supply, or the output must be level-shifted through external resistor dividers. This design constraint of the ACPL-M43T-000E adds one integration layer (secondary regulator or level-shift network) compared to higher-voltage optoisolators rated for 48V output. For 5V or 12V logic systems, the ACPL-M43T-000E's 20V rating is not a constraint; the benefit emerges when isolating high-voltage signals onto low-voltage logic, where the ACPL-M43T-000E naturally operates.
What creepage and clearance distances must be maintained for the ACPL-M43T-000E when laid out near high-voltage traces on a PCB?
While the ACPL-M43T-000E datasheet does not explicitly specify creepage and clearance distances in this parameter set, the 4000Vrms isolation rating implies that the internal device structure maintains minimum creepage/clearance per IEC 60601 or similar standards. PCB layout for the ACPL-M43T-000E should implement creepage distances that match or exceed the isolation voltage; for 4000V isolation, industry practice typically requires 4–8mm creepage on the PCB between input and output traces, depending on pollution degree and PCB material. The ACPL-M43T-000E package itself (6-SOIC, 5 leads) defines the device creepage; external PCB routing must not bypass this isolation by routing high-voltage traces closer than the equivalent safety margin. Designers should reference Broadcom application notes and the AEC-Q100 automotive standard to confirm exact creepage requirements for the ACPL-M43T-000E in their specific end application.
How does the ACPL-M43T-000E perform in high common-mode dV/dt environments, such as IGBT half-bridge switching?
The ACPL-M43T-000E isolation specification of 4000Vrms addresses DC isolation voltage but does not explicitly define common-mode transient immunity (CMTI). In half-bridge IGBT circuits, the midpoint node switches rapidly between ground and the DC bus (often 400V or 600V), producing high dV/dt common-mode voltage at the isolation barrier. High dV/dt can couple capacitively into the ACPL-M43T-000E LED circuit, potentially causing false triggering. The ACPL-M43T-000E's input capacitance and packaging determine actual CMTI performance; Broadcom typically specifies CMTI for R²Coupler devices in the 10–30kV/µs range, though this parameter is not listed in the provided specification set. For IGBT gate drive, designers should assume the ACPL-M43T-000E can tolerate CMTI up to approximately 15kV/µs and verify performance through bench testing or simulation if actual dV/dt exceeds 20kV/µs; alternatively, ferrite filtering on the ACPL-M43T-000E input traces can reduce coupled noise.
What is the typical leakage current specification for the ACPL-M43T-000E output in the off-state, and how does it affect low-power standby circuits?
The provided parameter set does not explicitly list ACPL-M43T-000E output leakage current in the off-state (with no input signal), though phototransistor optoisolators typically exhibit leakage in the 100–500nA range. In standby or sleep modes where the ACPL-M43T-000E output is expected to hold a logic low state with minimal current, off-state leakage becomes relevant to power consumption budgets. If the ACPL-M43T-000E output drives a high-impedance node (e.g., a MOSFET gate), off-state leakage of a few hundred nanoamps is negligible; however, if the ACPL-M43T-000E output drives a low-impedance input (logic gate or comparator), leakage has minimal effect on signal integrity but does contribute to quiescent current. Designers should consult Broadcom's full ACPL-M43T-000E datasheet for measured off-state leakage at operating temperature extremes (-40°C to 125°C) to evaluate total standby power consumption.

Parts with Similar Specifications

The three parts on the right have similar specifications to Broadcom Limited ACPL-M43T-000E

Product Attribute ACPL-M43T-500E ACPL-M43U-000E ACPL-M43T-560E ACPL-M43T-500
Part Number ACPL-M43T-500E ACPL-M43U-000E ACPL-M43T-560E ACPL-M43T-500
Manufacturer Broadcom Limited Broadcom Limited Broadcom Limited Broadcom Limited
Rise / Fall Time (Typ) - - - -
Turn On / Turn Off Time (Typ) - - - -
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Base Product Number - DAC34H84 MAX500 ADS62P42
Vce Saturation (Max) - - - -
Current Transfer Ratio (Max) - - - -
Input Type - - - Differential
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Number of Channels - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Current - DC Forward (If) (Max) - - - -
Voltage - Output (Max) - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Voltage - Forward (Vf) (Typ) - - - -
Voltage - Isolation - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Mounting Type - Surface Mount Through Hole Surface Mount
Current Transfer Ratio (Min) - - - -
Current - Output / Channel - - - -
Series - - - -

ACPL-M43T-000E Datasheet PDF

Download ACPL-M43T-000E pdf datasheets and Broadcom Limited documentation for ACPL-M43T-000E - Broadcom Limited.

PCN Design/Specification
Description Chg 05/Feb/2016.pdf Specification Updates 14/Apr/2015.pdf
PCN Assembly/Origin
Test/Saw Site Add 21/Nov/2016.pdf

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ACPL-M43T-000E Image

ACPL-M43T-000E

Broadcom Limited
32D-ACPL-M43T-000E

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