6N136S(TB) Optoisolator Equivalent & Substitute Parts

Part Overview

The 6N136S(TB) 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-SMD surface mount package. The device is classified as Active product status with full RoHS3 compliance and MSL Level 1 rating, indicating unlimited moisture sensitivity tolerance.

Substitute parts are identified when equivalent electrical and mechanical parameters align with the main part specifications, enabling direct replacement in circuit applications without functional degradation.

Key Parameters

Parameter	Value	Unit
Voltage - Isolation	5000	Vrms
Number of Channels	1	Channel
Current Transfer Ratio (Min)	19	% @ 16mA
Current Transfer Ratio (Max)	50	% @ 16mA
Output Type	Transistor with Base	-
Voltage - Output (Max)	20	V
Current - Output / Channel	8	mA
Voltage - Forward (Vf) (Typ)	1.45	V
Current - DC Forward (If) (Max)	25	mA
Operating Temperature	-55 to 100	°C
Mounting Type	Surface Mount	-
Package / Case	8-SMD, Gull Wing	-
RoHS Status	ROHS3 Compliant	-
MSL Rating	1 (Unlimited)	-

Substitute Part Grouping Explanation

Substitution eligibility for the 6N136S(TB) is determined by strict alignment of the following critical parameters:

Isolation Voltage: All substitute parts must maintain 5000Vrms isolation rating to preserve circuit safety and regulatory compliance.

Channel Configuration: Single channel (1 Channel) requirement is non-negotiable for direct replacement.

Output Type: Transistor with Base output configuration must be maintained for circuit compatibility.

Package / Case: 8-SMD, Gull Wing surface mount package ensures mechanical and electrical compatibility with existing PCB layouts.

Current Transfer Ratio Range: Minimum 19% and maximum 50% @ 16mA defines the operational gain window. Parts meeting this specification window are functionally equivalent.

Electrical Characteristics: Forward voltage (1.45V typical), maximum forward current (25mA), and output current per channel (8mA) must align to ensure circuit performance.

Operating Temperature Range: Parts must support the -55°C to 100°C operating window or a subset thereof.

Compliance: RoHS3 compliance and MSL Level 1 rating are mandatory for environmental and manufacturing process compatibility.

Parameter Comparison

Parameter	6N136S(TB) Everlight	6N135SMT&R Isocom	6N136SDVM onsemi	6N136SMT&R Isocom
Manufacturer	Everlight Electronics Co Ltd	Isocom Components 2004 LTD	onsemi	Isocom Components 2004 LTD
Voltage - Isolation	5000 Vrms	5000 Vrms	5000 Vrms	5000 Vrms
Number of Channels	1	1	1	1
Current Transfer Ratio (Min)	19% @ 16mA	7% @ 16mA	19% @ 16mA	19% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA	50% @ 16mA	50% @ 16mA	50% @ 16mA
Turn On / Turn Off Time (Typ)	350ns, 300ns	Not specified	250ns, 260ns	150ns, 400ns
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base
Voltage - Output (Max)	20V	20V	20V	20V
Current - Output / Channel	8mA	8mA	8mA	8mA
Voltage - Forward (Vf) (Typ)	1.45V	1.45V	1.45V	1.45V
Current - DC Forward (If) (Max)	25mA	25mA	25mA	25mA
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-40°C ~ 100°C	-55°C ~ 100°C
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active
Inventory Status	841 Pcs New Original	1967 Pcs New Original	1969 Pcs New Original	2188 Pcs New Original

Engineering Selection Recommendations

6N136SDVM (onsemi): This part demonstrates parametric equivalence with the 6N136S(TB) across all critical electrical specifications including isolation voltage, current transfer ratio range, and output characteristics. The onsemi device exhibits faster switching performance (250ns turn-on, 260ns turn-off) compared to the Everlight part. Operating temperature range is -40°C to 100°C, which covers the upper portion of the 6N136S(TB) specification. All compliance certifications (RoHS3, MSL Level 1) are met. This part is suitable for direct replacement in applications where the minimum operating temperature requirement does not exceed -40°C.

6N136SMT&R (Isocom): This part achieves full parametric equivalence with the 6N136S(TB) across all critical parameters including isolation voltage, current transfer ratio (19% to 50%), and operating temperature range (-55°C to 100°C). Switching characteristics show 150ns turn-on and 400ns turn-off times. RoHS3 compliance and MSL Level 1 rating are confirmed. This part is suitable for direct replacement in all applications matching the 6N136S(TB) specification window.

6N135SMT&R (Isocom): This part maintains 5000Vrms isolation, single channel configuration, and identical package specifications. However, the current transfer ratio minimum is specified at 7% @ 16mA, which falls below the 19% minimum of the 6N136S(TB). This parameter deviation indicates reduced gain performance and may affect circuit operation in applications requiring the higher minimum CTR. This part is not recommended as a direct substitute for the 6N136S(TB).

Frequently Asked Questions (FAQ)

Q: Can the 6N135SMT&R replace the 6N136S(TB) in my circuit?

A: The 6N135SMT&R shares the same isolation voltage (5000Vrms), channel count, package type, and output configuration. However, the current transfer ratio minimum is 7% @ 16mA compared to 19% @ 16mA for the 6N136S(TB). This lower minimum CTR represents reduced optical coupling efficiency and may result in insufficient output current or signal degradation in circuits designed for the higher gain specification. Substitution is not recommended without circuit redesign.

Q: What is the difference between the 6N136SDVM and 6N136SMT&R?

A: Both parts meet the electrical specifications of the 6N136S(TB) with 5000Vrms isolation and 19% to 50% current transfer ratio. The primary differences are manufacturer (onsemi vs. Isocom), switching speed (6N136SDVM: 250ns/260ns vs. 6N136SMT&R: 150ns/400ns), and operating temperature range (6N136SDVM: -40°C to 100°C vs. 6N136SMT&R: -55°C to 100°C). Select 6N136SDVM for applications requiring faster turn-on response. Select 6N136SMT&R for applications requiring full -55°C minimum temperature operation.

Q: Are all substitute parts available in the same packaging?

A: Yes. All listed substitute parts use 8-SMD, Gull Wing surface mount packaging, ensuring mechanical compatibility with PCB layouts designed for the 6N136S(TB).

Q: Do all substitute parts meet RoHS3 compliance?

A: Yes. All substitute parts listed are RoHS3 compliant with MSL Level 1 (Unlimited) moisture sensitivity rating, matching the environmental and manufacturing process requirements of the 6N136S(TB).

Q: What is the significance of the current transfer ratio specification?

A: Current transfer ratio (CTR) defines the optical coupling efficiency between the LED input and transistor output. The 6N136S(TB) specifies 19% to 50% @ 16mA, meaning the output current will be 19% to 50% of the input current. Parts with lower minimum CTR (such as 6N135SMT&R at 7%) provide weaker coupling and may not deliver sufficient output current for the intended circuit function.

Q: Can I use the 6N136SDVM in applications requiring -55°C operation?

A: The 6N136SDVM operating temperature range is -40°C to 100°C. It is not specified for operation below -40°C. For applications requiring -55°C minimum temperature operation, use 6N136SMT&R or the original 6N136S(TB).

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