6N136S Equivalent & Substitute Parts

Part Overview

The 6N136S is an optoisolator transistor with base output manufactured by onsemi, providing 2500Vrms isolation in an 8-SMD surface mount package. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. The 6N136S serves applications requiring galvanic isolation with transistor output capability and moderate isolation voltage ratings.

Key Parameters

Parameter	Value
Manufacturer Part Number	6N136S
Manufacturer	onsemi
Category	Optoisolators
Product Status	Obsolete
Number of Channels	1
Voltage - Isolation	2500Vrms
Current Transfer Ratio (Min)	19% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA
Turn On / Turn Off Time (Typ)	450ns, 500ns
Output Type	Transistor with Base
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
Mounting Type	Surface Mount
Package / Case	8-SMD, Gull Wing
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the 6N136S is determined by the following critical parameters:

Isolation Voltage: Substitute parts must meet or exceed 2500Vrms isolation rating
Output Type: Transistor with base output configuration required for pin compatibility
Number of Channels: Single channel configuration
Current Transfer Ratio: Range of 19% to 50% @ 16mA
Output Characteristics: Maximum output voltage 20V, output current 8mA per channel
Package Type: 8-SMD, Gull Wing surface mount configuration
Input Type: DC input

Substitute parts are grouped into two categories:

Direct Functional Equivalents maintain identical electrical specifications and package configuration, enabling direct replacement without circuit modification.

Compatible Alternatives provide equal or superior isolation voltage, matching output characteristics, and compatible packaging, suitable for applications where the 6N136S specifications are met or exceeded.

Parameter Comparison

Part Number	Manufacturer	Isolation Voltage	CTR Min @ 16mA	CTR Max @ 16mA	Turn On/Off Time (ns)	Output Type	Vf (Typ)	If Max (mA)	Temp Range	Product Status
6N136S	onsemi	2500Vrms	19%	50%	450, 500	Transistor w/ Base	1.45V	25	-55 to 100°C	Obsolete
6N136SM	onsemi	5000Vrms	19%	50%	250, 260	Transistor w/ Base	1.45V	25	-40 to 100°C	Active
6N136#300	Broadcom Limited	3750Vrms	19%	50%	200, 600	Transistor w/ Base	1.5V	25	-55 to 100°C	Active
6N136-300E	Broadcom Limited	3750Vrms	19%	50%	200, 600	Transistor w/ Base	1.5V	25	-55 to 100°C	Active
6N136-320E	Broadcom Limited	5000Vrms	19%	50%	200, 600	Transistor w/ Base	1.5V	25	-55 to 100°C	Active
6N136-500E	Broadcom Limited	3750Vrms	19%	50%	200, 600	Transistor w/ Base	1.5V	25	-55 to 100°C	Active
6N136-520E	Broadcom Limited	5000Vrms	19%	50%	200, 600	Transistor w/ Base	1.5V	25	-55 to 100°C	Active
6N136-560E	Broadcom Limited	3750Vrms	19%	50%	200, 600	Transistor w/ Base	1.5V	25	-55 to 100°C	Active
HCPL-4504#300	Broadcom Limited	3750Vrms	25%	60%	200, 300	Transistor	1.5V	25	-55 to 100°C	Active
HCPL-4562-300E	Broadcom Limited	3750Vrms	—	—	—	Transistor w/ Base	1.3V	12	-40 to 85°C	Active

Engineering Selection Recommendations

Primary Substitutes for Active Production:

6N136SM (onsemi) and 6N136-320E (Broadcom Limited) are the recommended primary substitutes. Both maintain transistor with base output configuration, support the full -55°C to 100°C operating temperature range of the original 6N136S, and provide superior isolation voltage (5000Vrms) compared to the 2500Vrms original specification. The 6N136SM is an active onsemi product maintaining manufacturer continuity. The 6N136-320E is ROHS3 compliant and actively produced by Broadcom Limited.

Secondary Substitutes:

6N136#300, 6N136-300E, 6N136-500E, and 6N136-560E (all Broadcom Limited) provide 3750Vrms isolation with matching output characteristics and -55°C to 100°C temperature range. These parts are active and ROHS3 compliant. The 6N136-500E offers the highest inventory availability (34,600 pcs).

Alternative with Different Output Configuration:

HCPL-4504#300 (Broadcom Limited) provides 3750Vrms isolation with transistor output (without base connection). This part features improved current transfer ratio (25-60% @ 16mA) and faster switching times (200ns, 300ns) but requires circuit redesign due to output configuration differences.

Not Recommended:

HCPL-4562-300E differs significantly in forward current specification (12mA maximum versus 25mA) and operating temperature range (-40°C to 85°C), limiting compatibility with applications requiring the full -55°C to 100°C range.

Frequently Asked Questions (FAQ)

Q: Can 6N136SM directly replace 6N136S without circuit modification?

A: Yes. The 6N136SM maintains identical pin configuration, output type (transistor with base), and electrical characteristics (19-50% CTR @ 16mA, 20V max output, 8mA output current). The higher isolation voltage (5000Vrms versus 2500Vrms) provides additional safety margin without requiring circuit changes.

Q: What is the difference between 6N136-300E and 6N136-500E?

A: Both parts provide identical electrical specifications (3750Vrms isolation, 19-50% CTR, transistor with base output). The difference is packaging: 6N136-300E uses 8-DIP Gull Wing supplier package, while 6N136-500E uses 8-SO supplier package. Select based on your PCB assembly equipment and solder reflow profile compatibility.

Q: Why is HCPL-4504#300 listed as a substitute if it lacks base output?

A: HCPL-4504#300 is functionally compatible for applications where base drive is not required. It provides superior current transfer ratio (25-60% versus 19-50%) and faster switching (200ns/300ns versus 450ns/500ns). Circuit redesign is necessary to eliminate base connections.

Q: Are all substitute parts RoHS compliant?

A: Most active substitutes are ROHS3 compliant. Exception: 6N136#300 is RoHS non-compliant. Verify compliance requirements for your application before selection.

Q: What is the temperature range limitation of HCPL-4562-300E?

A: HCPL-4562-300E operates from -40°C to 85°C, compared to the 6N136S range of -55°C to 100°C. This part is unsuitable for applications requiring full temperature range coverage or operation below -40°C or above 85°C.

Q: Which substitute offers the best inventory availability?

A: 6N136-500E (Broadcom Limited) has the highest stock level at 34,600 pcs. For onsemi products, 6N136SM provides 5,825 pcs availability.

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