HCPL-0453#500 Optoisolator Equivalent & Substitute Parts

Part Overview

The HCPL-0453#500 is a single-channel optoisolator with transistor output manufactured by Broadcom Limited. This component provides 3750Vrms isolation voltage and is designed for high-speed signal coupling applications requiring galvanic isolation. The part is currently active in production with 3332 units in stock. Equivalent and substitute parts are identified for applications requiring alternative packaging formats, improved compliance status, or enhanced electrical performance characteristics.

Key Parameters

Parameter	Value
Isolation Voltage	3750Vrms
Number of Channels	1
Output Type	Transistor
Current Transfer Ratio (Min)	15% @ 16mA
Maximum Output Voltage	20V
Output Current per Channel	8mA
Input Forward Voltage (Typ)	1.5V
Maximum Forward Current	25mA
Turn On/Off Time (Typ)	1µs / 1µs
Operating Temperature Range	-55°C to 100°C
Package	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Input Type	DC

Substitute Part Grouping Explanation

Substitute parts for the HCPL-0453#500 are classified into two categories based on parametric equivalence and manufacturer recommendations:

Parametric Equivalents (Broadcom Limited): Parts HCPL-0452-500E, HCPL-0453-500E, and HCPL-0453-560E maintain identical electrical specifications including 3750Vrms isolation voltage, 15% minimum current transfer ratio, 1µs switching times, and 8-SOIC package compatibility. These parts differ primarily in packaging format (Cut Tape & Digi-Reel versus Tape & Reel) and RoHS compliance status. HCPL-0452-500E uses an 8-SO Tall variant package.

Manufacturer Recommended Alternatives: Parts HCPL0453 (Fairchild Semiconductor) and SFH6343T (Vishay Semiconductor Opto Division) are functionally similar but with modified electrical parameters. These alternatives maintain the same package footprint and output current specifications but differ in isolation voltage, current transfer ratio range, switching speed, and operating temperature range.

Substitution eligibility is determined by matching: isolation voltage rating, number of channels, output type, package mechanical compatibility, and operating temperature requirements.

Parameter Comparison

Parameter	HCPL-0453#500	HCPL-0452-500E	HCPL-0453-500E	HCPL-0453-560E	HCPL0453	SFH6343T
Manufacturer	Broadcom	Broadcom	Broadcom	Broadcom	Fairchild	Vishay
Isolation Voltage	3750Vrms	3750Vrms	3750Vrms	3750Vrms	2500Vrms	4000Vrms
Number of Channels	1	1	1	1	1	1
Output Type	Transistor	Transistor	Transistor	Transistor	Transistor	Transistor
Current Transfer Ratio (Min)	15% @ 16mA	15% @ 16mA	15% @ 16mA	15% @ 16mA	19% @ 16mA	19% @ 16mA
Current Transfer Ratio (Max)	—	—	—	—	50% @ 16mA	50% @ 16mA
Maximum Output Voltage	20V	20V	20V	20V	20V	25V
Output Current per Channel	8mA	8mA	8mA	8mA	8mA	8mA
Input Forward Voltage (Typ)	1.5V	1.5V	1.5V	1.5V	1.45V	1.6V
Maximum Forward Current	25mA	25mA	25mA	25mA	25mA	25mA
Turn On Time (Typ)	1µs	1µs	1µs	1µs	450ns	250ns
Turn Off Time (Typ)	1µs	1µs	1µs	1µs	300ns	500ns
Operating Temperature Range	-55°C to 100°C	-55°C to 100°C	-55°C to 100°C	-55°C to 100°C	-40°C to 85°C	-55°C to 100°C
Package	8-SOIC	8-SOIC Tall	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Packaging Format	Tape & Reel	Cut Tape & Digi-Reel	Cut Tape & Digi-Reel	Tape & Reel	Bulk	Tape & Reel
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not specified	1 (Unlimited)
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected	Not specified	REACH Unaffected
Inventory (Pcs)	3332	18600	35865	3621	3130	12560

Engineering Selection Recommendations

Direct Parametric Equivalents: HCPL-0452-500E, HCPL-0453-500E, and HCPL-0453-560E are direct substitutes for HCPL-0453#500 with identical electrical performance. Selection among these three is determined by packaging requirements and compliance needs. HCPL-0453-500E offers the highest inventory availability (35865 units) and ROHS3 compliance in standard Cut Tape & Digi-Reel format. HCPL-0453-560E maintains Tape & Reel packaging identical to the original part while providing ROHS3 compliance. HCPL-0452-500E uses an 8-SO Tall package variant and is suitable only if PCB layout accommodates increased component height.

Manufacturer Recommended Alternatives: HCPL0453 (Fairchild Semiconductor) and SFH6343T (Vishay Semiconductor Opto Division) are functionally similar alternatives with modified specifications. HCPL0453 operates at reduced isolation voltage (2500Vrms) and narrower temperature range (-40°C to 85°C), making it unsuitable for applications requiring the full 3750Vrms isolation or extended temperature operation. SFH6343T provides enhanced isolation voltage (4000Vrms) and faster switching times (250ns turn-on, 500ns turn-off) compared to the original 1µs specification, with extended temperature range matching the original part. SFH6343T is suitable for applications requiring improved isolation margin or higher switching speed.

Compliance Considerations: The original HCPL-0453#500 is RoHS non-compliant. For applications requiring RoHS3 compliance, HCPL-0453-500E, HCPL-0453-560E, and HCPL-0452-500E are compliant alternatives. SFH6343T also provides ROHS3 compliance with enhanced electrical performance.

Frequently Asked Questions (FAQ)

Q: Can HCPL-0452-500E replace HCPL-0453#500 directly on the PCB?

A: HCPL-0452-500E uses an 8-SO Tall package variant instead of standard 8-SOIC. While the footprint is mechanically compatible, the increased component height may conflict with nearby components or enclosure clearance. Verify PCB layout and assembly clearance before substitution.

Q: What is the difference between HCPL-0453-500E and HCPL-0453-560E?

A: Both parts are parametrically identical with 3750Vrms isolation, 15% minimum current transfer ratio, and 1µs switching times. The primary difference is packaging format: HCPL-0453-500E is supplied in Cut Tape & Digi-Reel format with higher inventory (35865 units), while HCPL-0453-560E is supplied in Tape & Reel format matching the original part's packaging. Selection depends on assembly equipment compatibility and supply chain requirements.

Q: Is HCPL0453 (Fairchild) a suitable replacement?

A: HCPL0453 is not recommended as a direct replacement. It operates at 2500Vrms isolation voltage, which is 1250Vrms lower than the original specification. Additionally, it has a narrower operating temperature range (-40°C to 85°C) compared to the original -55°C to 100°C. Use HCPL0453 only if your application requirements permit reduced isolation voltage and temperature range.

Q: When should I use SFH6343T instead of the original HCPL-0453#500?

A: SFH6343T is suitable when your application requires enhanced isolation voltage (4000Vrms versus 3750Vrms) or faster switching response (250ns turn-on versus 1µs). SFH6343T maintains the full -55°C to 100°C operating temperature range and provides ROHS3 compliance. Maximum output voltage is increased to 25V. Verify that your circuit design accommodates these parameter changes before substitution.

Q: Are all substitute parts pin-compatible with the original HCPL-0453#500?

A: All substitute parts use the 8-SOIC package with identical pin configuration and electrical interface. Pin compatibility is maintained across all listed alternatives. Physical package height differs only for HCPL-0452-500E (8-SO Tall variant).

Q: Which substitute part has the best availability?

A: HCPL-0453-500E has the highest inventory with 35865 units in stock, followed by SFH6343T with 12560 units. HCPL-0452-500E has 18600 units available. Original HCPL-0453#500 has 3332 units in stock.

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