ACPL-K49T-060E Equivalent & Substitute Parts

Part Overview

The ACPL-K49T-060E is a 5000Vrms optoisolator with transistor output manufactured by Broadcom Limited. This single-channel device operates in the -40°C to 125°C temperature range and is housed in an 8-SOIC surface mount package. The part is currently active in production with 1176 units in stock inventory. Equivalent and substitute parts are identified when design requirements necessitate alternative sourcing, inventory availability changes, or when specific performance characteristics of alternative models better suit application requirements.

Key Parameters

Parameter	Value
Isolation Voltage	5000Vrms
Number of Channels	1
Current Transfer Ratio (Min)	32% @ 10mA
Current Transfer Ratio (Max)	100% @ 10mA
Output Type	Transistor
Maximum Output Voltage	20V
Output Current per Channel	8mA
Forward Voltage (Typ)	1.5V
Maximum Forward Current	20mA
Operating Temperature Range	-40°C to 125°C
Package Type	8-SOIC (0.268", 6.81mm Width)
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the ACPL-K49T-060E are qualified based on the following critical parameters that must remain constant across all equivalent devices:

Isolation voltage rating of 5000Vrms
Single channel configuration
Transistor output topology
Current transfer ratio range of 32% to 100% @ 10mA
Maximum output voltage of 20V
Output current capacity of 8mA per channel
Forward voltage characteristics between 1.5V and 1.55V
Maximum forward current of 20mA
Operating temperature range of -40°C to 125°C
8-SOIC surface mount package (0.268", 6.81mm Width)
ROHS3 compliance and MSL Level 1 rating

Two substitute parts meet these criteria: ACPL-K43T-000E and ACPL-K49T-000E. Both maintain identical electrical isolation, channel count, output specifications, and thermal operating range. Differences exist only in switching speed characteristics and automotive qualification status.

Parameter Comparison

Parameter	ACPL-K49T-060E	ACPL-K43T-000E	ACPL-K49T-000E
Manufacturer	Broadcom Limited	Broadcom Limited	Broadcom Limited
Isolation Voltage	5000Vrms	5000Vrms	5000Vrms
Number of Channels	1	1	1
Current Transfer Ratio (Min)	32% @ 10mA	32% @ 10mA	32% @ 10mA
Current Transfer Ratio (Max)	100% @ 10mA	100% @ 10mA	100% @ 10mA
Output Type	Transistor	Transistor	Transistor
Maximum Output Voltage	20V	20V	20V
Output Current per Channel	8mA	8mA	8mA
Forward Voltage (Typ)	1.5V	1.55V	1.5V
Maximum Forward Current	20mA	20mA	20mA
Operating Temperature Range	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C
Package Type	8-SOIC (0.268", 6.81mm Width)	8-SOIC (0.268", 6.81mm Width)	8-SOIC (0.268", 6.81mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Turn On / Turn Off Time (Typ)	20µs, 20µs (Max)	150ns, 500ns	20µs, 20µs (Max)
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Inventory Status	1176 Pcs New Original	1660 Pcs New Original	3319 Pcs New Original

Engineering Selection Recommendations

All three parts—ACPL-K49T-060E, ACPL-K43T-000E, and ACPL-K49T-000E—are active production components with ROHS3 compliance and MSL Level 1 ratings, making them suitable for equivalent substitution in applications requiring 5000Vrms isolation with transistor output.

ACPL-K49T-000E is a direct parametric equivalent to ACPL-K49T-060E, sharing identical switching speed characteristics (20µs turn-on/turn-off time) and forward voltage specifications. This part offers the highest inventory availability at 3319 units.

ACPL-K43T-000E provides faster switching performance with 150ns turn-on and 500ns turn-off times, compared to the 20µs specification of the main part. This device carries automotive-grade qualification (AEC-Q100) and is designated as part of the R²Coupler™ series. Forward voltage is marginally higher at 1.55V versus 1.5V. This part is suitable for applications requiring enhanced switching speed performance within automotive or high-reliability environments.

Frequently Asked Questions (FAQ)

Q: Can ACPL-K43T-000E replace ACPL-K49T-060E in all applications?

A: ACPL-K43T-000E is electrically equivalent for isolation voltage, channel count, output current, and temperature range. The primary difference is switching speed: ACPL-K43T-000E operates at 150ns/500ns versus 20µs for ACPL-K49T-060E. Applications with timing-critical requirements must evaluate whether faster switching is compatible with circuit design. Forward voltage difference (1.55V vs 1.5V) is within typical tolerance ranges.

Q: What is the difference between ACPL-K49T-060E and ACPL-K49T-000E?

A: These parts are parametrically identical. Both share the same isolation voltage, channel configuration, output specifications, switching speed (20µs), forward voltage (1.5V), and operating temperature range. The suffix difference (-060E vs -000E) reflects manufacturing or packaging variants. ACPL-K49T-000E has higher inventory availability.

Q: Is ACPL-K43T-000E suitable for non-automotive applications?

A: Yes. ACPL-K43T-000E meets all electrical and mechanical requirements for standard industrial applications. The automotive qualification (AEC-Q100) indicates additional reliability screening but does not restrict use in non-automotive designs. The faster switching speed may provide performance benefits in applications where timing margins are critical.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the 8-SOIC (0.268", 6.81mm Width) package with identical pinout and surface mount footprint, enabling direct board-level substitution without layout modifications.

Q: What compliance certifications apply to these parts?

A: All three parts are ROHS3 compliant and carry MSL Level 1 (Unlimited) moisture sensitivity ratings. ACPL-K43T-000E additionally holds AEC-Q100 automotive qualification. All parts are REACH unaffected and classified under ECCN EAR99.

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