HCPL-070L#500 Equivalent & Substitute Parts

Part Overview

The HCPL-070L#500 is a single-channel optoisolator with Darlington output manufactured by Broadcom Limited. It provides 3750Vrms isolation voltage and is designed for DC input applications requiring galvanic isolation in 8-SOIC surface mount packaging. This part is currently discontinued at DiGi Electronics, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	Value
Manufacturer	Broadcom Limited
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	3750Vrms
Current Transfer Ratio (Min)	300% @ 1.6mA
Current Transfer Ratio (Max)	2600% @ 1.6mA
Output Type	Darlington
Voltage - Output (Max)	7V
Current - Output / Channel	60mA
Package / Case	8-SOIC (0.154", 3.90mm Width)
Operating Temperature	0°C ~ 70°C
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the HCPL-070L#500 are qualified based on the following critical parameters:

Isolation Voltage: 3750Vrms minimum
Number of Channels: 1 channel
Output Type: Darlington configuration
Package: 8-SOIC surface mount
Current Output Capability: 60mA per channel
Input Type: DC

Parts meeting these electrical and mechanical specifications are considered functionally equivalent for direct replacement applications.

Parameter Comparison

Parameter	HCPL-070L#500	HCPL-070L-500E	TLP2403(F)
Manufacturer	Broadcom Limited	Broadcom Limited	Toshiba Semiconductor and Storage
Number of Channels	1	1	1
Voltage - Isolation	3750Vrms	3750Vrms	3750Vrms
Current Transfer Ratio (Min)	300% @ 1.6mA	300% @ 1.6mA	500% @ 1.6mA
Current Transfer Ratio (Max)	2600% @ 1.6mA	2600% @ 1.6mA	Not specified
Turn On / Turn Off Time (Typ)	25µs, 50µs	25µs, 50µs	300ns, 1µs
Output Type	Darlington	Darlington	Darlington with Base
Voltage - Output (Max)	7V	7V	18V
Current - Output / Channel	60mA	60mA	60mA
Voltage - Forward (Vf) (Typ)	1.5V	1.5V	1.45V
Current - DC Forward (If) (Max)	20mA	20mA	20mA
Operating Temperature	0°C ~ 70°C	0°C ~ 70°C	-40°C ~ 100°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Product Status	Discontinued at DiGi Electronics	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

HCPL-070L-500E is the direct parametric equivalent to HCPL-070L#500. Both parts are manufactured by Broadcom Limited with identical electrical specifications and package configuration. The HCPL-070L-500E is currently in active production status with higher inventory availability. This part is ROHS3 compliant, addressing environmental compliance requirements where the original part does not.

TLP2403(F) is a manufacturer-recommended alternative from Toshiba Semiconductor and Storage. While maintaining the same isolation voltage, channel count, output current, and 8-SOIC package, it offers enhanced performance characteristics including faster switching times (300ns/1µs versus 25µs/50µs) and higher maximum output voltage (18V versus 7V). The TLP2403(F) features a Darlington output with base connection, providing additional design flexibility. This part supports an extended operating temperature range (-40°C to 100°C) and is RoHS compliant. Selection of the TLP2403(F) is appropriate for applications requiring improved switching performance or wider temperature operation.

Frequently Asked Questions (FAQ)

Q: Can HCPL-070L-500E be used as a direct replacement for HCPL-070L#500?

A: Yes. The HCPL-070L-500E is a parametric equivalent with identical isolation voltage (3750Vrms), current transfer ratio range (300%-2600% @ 1.6mA), output current (60mA), switching times (25µs/50µs), and 8-SOIC package. Both parts are Broadcom products with the same functional specifications.

Q: What are the key differences between HCPL-070L-500E and TLP2403(F)?

A: The primary differences are switching speed and output voltage rating. TLP2403(F) has faster turn-on/turn-off times (300ns/1µs versus 25µs/50µs) and higher maximum output voltage (18V versus 7V). TLP2403(F) also includes a base connection on the Darlington output and supports a wider operating temperature range (-40°C to 100°C versus 0°C to 70°C).

Q: Are all substitute parts available in the same 8-SOIC package?

A: Yes. HCPL-070L-500E and TLP2403(F) are both supplied in 8-SOIC (0.154", 3.90mm Width) surface mount packaging, ensuring PCB layout compatibility with the original HCPL-070L#500 design.

Q: Which substitute part should be selected for new designs?

A: HCPL-070L-500E is recommended for direct replacement in existing designs due to identical specifications. For new designs, TLP2403(F) offers superior switching performance and extended temperature range, provided the application can accommodate the higher output voltage rating and base connection configuration.

Q: What is the impact of RoHS compliance on part selection?

A: HCPL-070L#500 is RoHS non-compliant. Both substitute parts (HCPL-070L-500E and TLP2403(F)) are RoHS compliant, meeting current environmental and regulatory requirements for most applications and markets.

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