ACPL-M61T Equivalent & Substitute Parts

Part Overview

The ACPL-M61T is a logic output optoisolator manufactured by Broadcom Limited, designed for high-speed digital isolation applications. This 4000Vrms isolation device features open collector output with Schottky clamping, operating at 10MBd data rate with 15kV/µs common mode transient immunity. The component is qualified to AEC-Q100 automotive standards and maintains active product status. Substitute parts are identified to address inventory availability, extended lead times, or specific application requirements while maintaining functional compatibility within defined electrical and mechanical parameters.

Substiute Parts

ACPL-M61T

Broadcom LimitedIn Stock: 1524ACPL-M61T Datasheet

Current PartRFQ

TLP118(TPL,E

Toshiba Semiconductor and StorageIn Stock: 41167TLP118(TPL,E Datasheet

MFR RecommendedRFQ

TLP2362(E)

Toshiba Semiconductor and StorageIn Stock: 2185TLP2362(E) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ACPL-M61T are qualified based on the following critical parameters that define functional compatibility:

Isolation Voltage: Substitute parts must maintain minimum 3750Vrms isolation, which is within acceptable tolerance of the primary part's 4000Vrms specification for applications not requiring the full isolation margin.

Common Mode Transient Immunity (CMTI): Substitute parts must meet or exceed 15kV/µs CMTI to ensure equivalent transient response performance.

Output Configuration: All substitutes feature open collector output topology, maintaining functional equivalence in circuit interface requirements.

Single Channel Architecture: All parts provide 1 channel, 1 input configuration.

DC Input Type: All parts accept DC input signals.

Operating Temperature Range: All parts operate across -40°C ~ 125°C, supporting automotive and industrial applications.

Surface Mount Packaging: All parts use 6-SOIC surface mount packages with 5 leads, ensuring mechanical compatibility with existing PCB layouts.

Supply Voltage: All parts operate within 4.5V ~ 5.5V supply range, with TLP2362(E) supporting extended range to 2.7V.

Data Rate Compatibility: Substitute parts operate at 10MBd or 20Mbps, supporting the primary part's 10MBd requirement.

Parameter Comparison

Engineering Selection Recommendations

ACPL-M61T (Primary Part): Maintains active product status with AEC-Q100 automotive qualification. Provides highest isolation voltage (4000Vrms) and output current capability (50mA). Suitable for applications requiring maximum isolation margin and higher load drive capability. RoHS non-compliant status may restrict use in certain regulated markets.

TLP118(TPL,E) (Substitute): Active product with ROHS3 compliance. Offers higher data rate (20Mbps) and faster propagation delay (60ns) compared to primary part. Output current reduced to 25mA. Isolation voltage reduced to 3750Vrms. Suitable for applications prioritizing RoHS compliance and higher speed performance where 25mA output current is sufficient.

TLP2362(E) (Substitute): Active product with RoHS compliance. Provides enhanced CMTI performance (20kV/µs) and extended supply voltage range (2.7V ~ 5.5V). Data rate and propagation delay match primary part specifications. Output current reduced to 25mA. Isolation voltage reduced to 3750Vrms. Suitable for applications requiring superior transient immunity and low-voltage supply operation.

Frequently Asked Questions (FAQ)

Q: Can TLP118(TPL,E) or TLP2362(E) directly replace ACPL-M61T in existing designs?

A: Direct replacement requires verification of output current requirements. Both substitutes provide 25mA maximum output current versus ACPL-M61T's 50mA. If the application circuit requires more than 25mA output current, substitution is not compatible. Isolation voltage reduction from 4000Vrms to 3750Vrms must be evaluated against application isolation margin requirements.

Q: What are the isolation voltage differences and their implications?

A: ACPL-M61T provides 4000Vrms isolation. Both TLP118(TPL,E) and TLP2362(E) provide 3750Vrms isolation. The 250Vrms difference represents a 6.25% reduction. Applications with fixed isolation requirements at 4000Vrms cannot use the substitute parts. Applications with flexible isolation specifications or lower isolation requirements can accommodate the substitutes.

Q: How do propagation delay differences affect circuit performance?

A: ACPL-M61T specifies 75ns maximum propagation delay. TLP118(TPL,E) provides 60ns (faster), while TLP2362(E) provides 100ns (slower). Timing-critical applications must verify that substitute propagation delays remain within system timing budgets. TLP118(TPL,E) offers improved timing performance; TLP2362(E) requires additional timing margin verification.

Q: Are the package dimensions compatible?

A: ACPL-M61T uses 6-SOIC with 0.173" width (4.40mm). Substitutes use 6-SOIC with 0.179" width (4.55mm). Both are 5-lead packages. The width difference of 0.006" (0.15mm) may require PCB layout verification, particularly for high-density designs. Mechanical compatibility should be confirmed before production implementation.

Q: What is the significance of RoHS compliance differences?

A: ACPL-M61T is RoHS non-compliant. TLP118(TPL,E) is ROHS3 compliant. TLP2362(E) is RoHS compliant. Applications subject to RoHS regulations or customer requirements mandating RoHS compliance must use TLP118(TPL,E) or TLP2362(E). Non-regulated applications may use any part.

Q: Which substitute is better for high-speed applications?

A: TLP118(TPL,E) provides the highest data rate at 20Mbps and fastest propagation delay at 60ns. For applications requiring maximum speed performance within the 10MBd primary specification, TLP118(TPL,E) offers superior performance. However, output current is limited to 25mA.

Q: Can TLP2362(E) operate at lower supply voltages?

A: TLP2362(E) supports supply voltage range of 2.7V ~ 5.5V, compared to ACPL-M61T and TLP118(TPL,E) which require 4.5V ~ 5.5V. TLP2362(E) is suitable for low-voltage applications operating below 4.5V. ACPL-M61T and TLP118(TPL,E) cannot operate below 4.5V supply voltage.