6N135-V Optoisolator Equivalent & Substitute Parts

Part Overview

The 6N135-V is an optoisolator transistor with base output manufactured by Everlight Electronics Co Ltd. This component provides 5000Vrms isolation with a single channel configuration in an 8-DIP through-hole package. The device is currently in active production status with 847 pieces available in new original inventory.

The 6N135-V serves applications requiring galvanic isolation between logic and power circuits with high voltage isolation requirements. Identification of equivalent substitute parts is necessary for supply chain continuity, design flexibility, and component availability management across different procurement channels and manufacturing sources.

Substiute Parts

6N135-V

Everlight Electronics Co LtdIn Stock: 9186N135-V Datasheet

Current PartRFQ

6N135

Fairchild SemiconductorIn Stock: 124296N135 Datasheet

Parametric EquivalentRFQ

6N135

Fairchild SemiconductorIn Stock: 124296N135 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 6N135-V optoisolator are determined by strict equivalence across the following critical parameters:

Isolation Voltage: 5000Vrms isolation rating is the primary electrical requirement. Substitute parts must maintain this isolation specification.

Channel Configuration: Single channel (1 channel) output is mandatory for functional equivalence.

Output Configuration: Transistor with base output type must be preserved to maintain circuit compatibility.

Current Transfer Ratio Range: The 7% minimum to 50% maximum CTR @ 16mA input current defines the gain characteristics of the optoisolator and must be matched.

Input/Output Electrical Characteristics: DC input type, 20V maximum output voltage, 8mA output current per channel, 1.45V typical forward voltage, and 25mA maximum DC forward current must be maintained.

Switching Performance: Turn-on and turn-off times (350ns and 500ns typical) establish the switching speed envelope.

Package Compatibility: 8-DIP through-hole package with 0.300" (7.62mm) spacing is required for mechanical and electrical board-level compatibility.

Operating Temperature Range: -55°C to 100°C operating temperature must be supported.

The 6N135 from Fairchild Semiconductor meets all these parametric requirements and qualifies as a direct substitute based on electrical and mechanical equivalence.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - 6N135-V (Everlight Electronics): This is the specified part number with active production status. The component carries ROHS3 compliance certification, meeting current environmental and regulatory requirements. Current inventory of 847 pieces supports immediate procurement needs. This part is the preferred choice for new designs and ongoing production.

Substitute Selection - 6N135 (Fairchild Semiconductor): This part provides complete parametric equivalence across all critical electrical and mechanical specifications. However, the Fairchild 6N135 carries obsolete product status and does not comply with RoHS standards. The turn-off time specification (350ns versus 500ns) represents a performance improvement over the primary part. This substitute is suitable only for legacy system maintenance, repair, or applications where RoHS compliance is not required. The obsolete status indicates limited future availability.

Compliance Consideration: The 6N135-V maintains ROHS3 compliance while the Fairchild substitute does not. For applications subject to environmental regulations or customer requirements mandating RoHS compliance, the 6N135-V is the only acceptable choice.

Inventory Availability: The Fairchild 6N135 shows 12,400 pieces in stock compared to 847 pieces for the 6N135-V. However, the obsolete status of the Fairchild part suggests this inventory may not be replenished.

Frequently Asked Questions (FAQ)

Q: Can the 6N135 from Fairchild Semiconductor be used as a direct replacement for the 6N135-V?

A: The 6N135 meets all parametric electrical and mechanical requirements for substitution. Both parts share identical isolation voltage (5000Vrms), channel configuration (1 channel), output type (transistor with base), current transfer ratio range (7%-50%), input/output voltage and current specifications, operating temperature range (-55°C to 100°C), and 8-DIP package format. Substitution is electrically and mechanically valid.

Q: What is the significance of the product status difference between these parts?

A: The 6N135-V carries active production status, indicating ongoing manufacturing and availability. The Fairchild 6N135 is obsolete, meaning production has ended and inventory will not be replenished. For new designs or long-term production requirements, the active 6N135-V is the appropriate selection.

Q: Does the RoHS compliance difference affect substitution?

A: The 6N135-V is ROHS3 compliant while the Fairchild 6N135 is not. If your application, customer requirements, or regional regulations mandate RoHS compliance, only the 6N135-V is acceptable. The Fairchild part cannot be used in RoHS-compliant applications.

Q: Are there differences in switching performance between these parts?

A: Turn-on time is identical at 350ns. Turn-off time differs: the 6N135-V specifies 500ns typical while the Fairchild 6N135 specifies 350ns typical. The Fairchild part exhibits faster turn-off performance. For applications with strict switching speed requirements, this difference should be evaluated against circuit timing margins.

Q: Can these parts be used interchangeably on the same PCB?

A: Yes. Both parts use the 8-DIP through-hole package with identical 0.300" (7.62mm) spacing. Pin-to-pin compatibility is complete, allowing direct substitution on the same printed circuit board without layout modifications.

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

A: The 6N135-V specifies MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. Standard handling and storage procedures are sufficient. The Fairchild 6N135 data does not specify MSL in the provided parameters.

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

A: The 6N135-V from Everlight Electronics is the appropriate selection for new designs. It maintains active production status, ROHS3 compliance, and adequate inventory availability. The Fairchild 6N135 should be reserved for legacy system support only.