HCPL-814-W0AE Equivalent & Substitute Parts

Part Overview

The HCPL-814-W0AE is an optoisolator with transistor output manufactured by Broadcom Limited. This component provides 5000Vrms isolation in a 4-DIP package and is designed for applications requiring galvanic isolation between input and output circuits. The part is currently active in production with 946 units in stock. Substitute parts may be required due to supply constraints, regional availability, or design flexibility in applications where electrical and mechanical parameters align with alternative qualified components.

Key Parameters

Parameter	Value
Voltage - Isolation	5000Vrms
Number of Channels	1
Output Type	Transistor
Current Transfer Ratio (Min)	50% @ 1mA
Current Transfer Ratio (Max)	150% @ 1mA
Voltage - Output (Max)	35V
Current - Output / Channel	50mA
Vce Saturation (Max)	200mV
Operating Temperature	-30°C ~ 100°C
Package / Case	4-DIP
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the HCPL-814-W0AE is permissible with components meeting the following criteria:

Isolation voltage of 5000Vrms or greater
Single channel transistor output configuration
Maximum output voltage of 35V or greater
Maximum output current of 50mA or greater
Vce saturation of 200mV or less
4-DIP package format
Operating temperature range that encompasses or exceeds -30°C to 100°C
ROHS3 compliance and REACH unaffected status

The LTV-814 manufactured by Lite-On Inc. satisfies all substitution criteria within these electrical and mechanical boundaries.

Parameter Comparison

Parameter	HCPL-814-W0AE (Broadcom)	LTV-814 (Lite-On)	Compatibility
Voltage - Isolation	5000Vrms	5000Vrms	Equivalent
Number of Channels	1	1	Equivalent
Output Type	Transistor	Transistor	Equivalent
Current Transfer Ratio (Min)	50% @ 1mA	20% @ 1mA	HCPL-814-W0AE has higher minimum
Current Transfer Ratio (Max)	150% @ 1mA	300% @ 1mA	LTV-814 has higher maximum
Rise / Fall Time (Typ)	4µs, 3µs	4µs, 3µs	Equivalent
Input Type	AC, DC	AC, DC	Equivalent
Voltage - Output (Max)	35V	35V	Equivalent
Current - Output / Channel	50mA	50mA	Equivalent
Voltage - Forward (Vf) (Typ)	1.2V	1.2V	Equivalent
Current - DC Forward (If) (Max)	50mA	50mA	Equivalent
Vce Saturation (Max)	200mV	200mV	Equivalent
Operating Temperature	-30°C ~ 100°C	-30°C ~ 110°C	LTV-814 has extended upper range
Package / Case	4-DIP (0.400", 10.16mm)	4-DIP (0.300", 7.62mm)	Same package type, different body length
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Equivalent
REACH Status	REACH Unaffected	REACH Unaffected	Equivalent

Engineering Selection Recommendations

Both the HCPL-814-W0AE and LTV-814 are active production components with ROHS3 compliance and REACH unaffected status, making them suitable for current design implementations. The LTV-814 offers extended operating temperature range to 110°C and higher current transfer ratio maximum specification. The HCPL-814-W0AE maintains a higher minimum current transfer ratio at 50% versus 20% for the LTV-814. Both components meet the core electrical requirements for 5000Vrms isolation, 50mA output current, and 35V maximum output voltage. Physical package dimensions differ slightly between manufacturers, with the LTV-814 featuring a shorter body length (7.62mm versus 10.16mm), which may impact PCB layout considerations in space-constrained applications.

Frequently Asked Questions (FAQ)

Q: Can the LTV-814 directly replace the HCPL-814-W0AE in existing designs?

A: Direct replacement is possible from an electrical standpoint, as both components meet the core isolation voltage, output current, and saturation specifications. However, the physical package body length differs (7.62mm versus 10.16mm), which may require PCB layout verification to ensure mechanical clearance and trace routing compatibility.

Q: What is the significance of the Current Transfer Ratio difference between these parts?

A: The HCPL-814-W0AE specifies a minimum CTR of 50% while the LTV-814 specifies 20%. This means the Broadcom part guarantees higher optical coupling efficiency at minimum. Applications sensitive to input current requirements should verify that the lower minimum CTR of the LTV-814 remains acceptable for their circuit design.

Q: Are both parts suitable for industrial temperature applications?

A: The HCPL-814-W0AE operates from -30°C to 100°C, while the LTV-814 extends to 110°C. For applications requiring operation above 100°C, the LTV-814 provides additional thermal margin. Both parts maintain ROHS3 compliance across their operating ranges.

Q: What compliance certifications apply to both substitute parts?

A: Both the HCPL-814-W0AE and LTV-814 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.

Q: How do the 4-DIP package dimensions affect substitution?

A: While both use 4-DIP packaging, the body lengths differ. The HCPL-814-W0AE measures 10.16mm while the LTV-814 measures 7.62mm. PCB designs with tight component spacing or specific mechanical constraints should verify that the shorter LTV-814 body does not create clearance issues with adjacent components or solder joint geometry.

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