6N136V Optoisolator - Equivalent & Substitute Parts

Part Overview

The 6N136V is a high-speed optocoupler manufactured by Isocom Components 2004 LTD, designed for galvanic isolation applications requiring 5000Vrms isolation voltage. This 8-pin DIP optoisolator features a transistor output with base connection, supporting 1 channel with a current transfer ratio range of 19% to 50% at 16mA input current. The component is actively produced and widely used in industrial control, power supply feedback circuits, and signal isolation applications. Identifying equivalent and substitute parts is necessary when the primary part becomes unavailable, when alternative sourcing is required, or when design flexibility across compatible manufacturers is needed.

Substiute Parts

6N136V

Isocom Components 2004 LTDIn Stock: 119886N136V Datasheet

Current PartRFQ

6N136

onsemiIn Stock: 501706N136 Datasheet

Parametric EquivalentRFQ

QT4502

QT Brightek (QTB)In Stock: 999QT4502 Datasheet

Parametric EquivalentRFQ

QT4503

QT Brightek (QTB)In Stock: 962QT4503 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 6N136V is determined by strict parametric alignment across the following critical criteria:

Mandatory Matching Parameters:

• Number of Channels: 1
• Output Type: Transistor with Base
• Package / Case: 8-DIP (0.300", 7.62mm)
• Mounting Type: Through Hole
• Current Transfer Ratio Range: 19% to 50% @ 16mA
• Voltage - Output (Max): 20V
• Current - Output / Channel: 8mA
• Voltage - Forward (Vf) (Typ): 1.45V
• Current - DC Forward (If) (Max): 25mA
• Operating Temperature: -55°C ~ 100°C
• Input Type: DC

Isolation Voltage Consideration: The 6N136V specifies 5000Vrms isolation voltage. Substitute parts meeting all other parameters but with lower isolation voltage (such as 2500Vrms) are classified as parametric equivalents with reduced isolation capability and require application-level assessment before deployment.

Identified Substitute Parts:

• 6N136 (onsemi) - Parametric equivalent with 2500Vrms isolation
• QT4502 (QT Brightek) - Full parametric equivalent with 5000Vrms isolation
• QT4503 (QT Brightek) - Full parametric equivalent with 5000Vrms isolation

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Full Parametric Equivalents): QT4502 and QT4503 from QT Brightek are direct substitutes for the 6N136V. Both parts maintain identical isolation voltage (5000Vrms), current transfer ratio specifications, and all electrical parameters. Both are actively produced and ROHS3 compliant, making them suitable for new designs and replacement applications without circuit modification.

Secondary Substitute (Reduced Isolation Voltage): The 6N136 from onsemi is a parametric equivalent with reduced isolation voltage of 2500Vrms compared to the 6N136V specification of 5000Vrms. This part is obsolete and should be used only in applications where 2500Vrms isolation is sufficient. Circuit-level assessment is required before substitution.

Compliance Considerations: All recommended substitutes maintain ROHS3 compliance and REACH unaffected status, consistent with the original 6N136V specification. Moisture sensitivity level remains at MSL 1 (Unlimited) across all parts.

Frequently Asked Questions (FAQ)

Q: Can QT4502 or QT4503 be used as direct replacements for 6N136V without circuit modification? A: Yes. QT4502 and QT4503 maintain identical electrical parameters and isolation voltage specifications. Pin configuration and package dimensions are identical (8-DIP, 0.300" spacing). Direct substitution is possible without circuit redesign.

Q: What is the key difference between 6N136V and the onsemi 6N136? A: The primary difference is isolation voltage. The 6N136V provides 5000Vrms isolation, while the onsemi 6N136 provides 2500Vrms isolation. All other electrical parameters are identical. The onsemi part is obsolete.

Q: Are there differences in switching speed between 6N136V and QT4502/QT4503? A: The 6N136V does not specify turn-on/turn-off time or rise/fall time. QT4502 and QT4503 specify 350ns turn-on and turn-off times. This represents additional performance data but does not indicate incompatibility.

Q: Can these parts be used interchangeably in existing PCB designs? A: Yes, for QT4502 and QT4503. Both use the same 8-DIP package with 0.300" pin spacing and identical pin assignments. No PCB layout changes are required. The onsemi 6N136 also uses the same package but requires application-level isolation voltage assessment.

Q: What is the inventory status of substitute parts? A: QT4502 has 981 pieces in stock, QT4503 has 941 pieces in stock, and the onsemi 6N136 has 50,100 pieces in stock. The original 6N136V has 11,900 pieces in stock.

Q: Are all substitute parts ROHS3 compliant? A: QT4502 and QT4503 are ROHS3 compliant. The onsemi 6N136 RoHS status is not specified in the provided data.