SFH6156 Equivalent & Substitute Parts

Part Overview

The SFH6156 is an optoisolator manufactured by Vishay Semiconductor Opto Division, classified as a single-channel optoisolator with transistor output configuration. This component is designated as obsolete, which necessitates identification of equivalent substitute parts for ongoing design requirements and production continuity. The SFH6156 provides galvanic isolation suitable for applications requiring signal transmission across isolated domains with electrical safety barriers.

Substiute Parts

SFH6156

Vishay Semiconductor Opto DivisionIn Stock: 2230SFH6156 Datasheet

Current PartRFQ

SFH6156-1T

Vishay Semiconductor Opto DivisionIn Stock: 6453SFH6156-1T Datasheet

SimilarRFQ

HCPL-817-000E

Broadcom LimitedIn Stock: 3325HCPL-817-000E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SFH6156 is determined by the following critical parameters:

Isolation Voltage: Substitute parts must maintain isolation voltage ratings of 5000Vrms or higher to ensure equivalent electrical safety performance.

Output Configuration: All substitutes feature transistor output topology, consistent with the original part's functional architecture.

Number of Channels: Single-channel configuration is maintained across all substitute options.

Output Specifications: Maximum output voltage of 70V and output current of 50mA define the electrical load-handling capability.

Input Type: DC input operation is preserved across all substitutes.

Compliance & Certifications: All substitute parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment with the original component.

Packaging Availability: Substitutes are available in both surface mount (SMD) and through-hole (DIP) configurations to accommodate different assembly methodologies.

Parameter Comparison

Engineering Selection Recommendations

SFH6156-1T Selection Criteria:

The SFH6156-1T is an active product from Vishay Semiconductor Opto Division with enhanced isolation voltage specification of 5300Vrms. This part is available in surface mount 4-SMD packaging with gull wing leads. Current transfer ratio ranges from 40% to 80% at 10mA input current. The part maintains ROHS3 compliance and REACH Unaffected status. Moisture sensitivity level is rated as MSL 1 (Unlimited). This substitute is suitable for applications requiring surface mount assembly and higher isolation voltage margins.

HCPL-817-000E Selection Criteria:

The HCPL-817-000E is an active product from Broadcom Limited with isolation voltage specification of 5000Vrms. This part is available in through-hole 4-DIP packaging. Current transfer ratio ranges from 50% to 600% at 5mA input current. The part maintains ROHS3 compliance and REACH Unaffected status. Moisture sensitivity level is rated as MSL 1 (Unlimited). This substitute is suitable for applications requiring through-hole assembly and board-level compatibility with DIP socket configurations.

Both substitutes maintain regulatory compliance equivalent to the original SFH6156 and are currently in active production status, ensuring long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Why is the SFH6156 being replaced?

A: The SFH6156 has reached obsolete status. The identified substitute parts SFH6156-1T and HCPL-817-000E are active products that provide equivalent functional performance with current manufacturing support and supply availability.

Q: What are the key compatibility criteria for substitution?

A: Substitutes must maintain single-channel transistor output configuration, DC input operation, 70V maximum output voltage, 50mA output current capability, and isolation voltage ratings of 5000Vrms or higher. All substitutes must comply with ROHS3 standards and maintain REACH Unaffected status.

Q: What is the primary difference between the two substitute options?

A: The SFH6156-1T is a surface mount component in 4-SMD packaging, while the HCPL-817-000E is a through-hole component in 4-DIP packaging. Selection depends on the assembly methodology and PCB design requirements of the target application.

Q: Are there differences in current transfer ratio specifications?

A: Yes. The SFH6156-1T specifies current transfer ratio of 40% to 80% at 10mA, while the HCPL-817-000E specifies 50% to 600% at 5mA. These differences reflect different measurement conditions and should be evaluated against specific application requirements.

Q: What is the operating temperature range for each substitute?

A: The SFH6156-1T operates from -55°C to 100°C. The HCPL-817-000E operates from -30°C to 100°C. Application thermal requirements determine which operating range is appropriate.

Q: Are both substitutes compliant with current regulatory standards?

A: Yes. Both SFH6156-1T and HCPL-817-000E are ROHS3 compliant and REACH Unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: What is the moisture sensitivity level for these components?

A: Both substitutes are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage and handling.