6N136 Optoisolator Equivalent & Substitute Parts

Part Overview

The 6N136 is an optoisolator transistor with base output manufactured by Everlight Electronics Co Ltd, designed for high-voltage isolation applications. This component provides 5000Vrms isolation voltage in a single-channel configuration with transistor output and base connection. The part is currently in active product status with substantial inventory availability (50,100 pieces in stock).

Equivalent and substitute parts are identified based on matching electrical characteristics, mechanical compatibility, and functional performance within the optoisolator transistor category. Substitution becomes necessary when primary part availability is limited, when alternative manufacturers are preferred for supply chain diversification, or when application requirements permit operation at lower isolation voltage ratings.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	6N136	—
Manufacturer	Everlight Electronics Co Ltd	—
Category	Optoisolators	—
Number of Channels	1	—
Voltage - Isolation	5000	Vrms
Current Transfer Ratio (Min)	19	% @ 16mA
Current Transfer Ratio (Max)	50	% @ 16mA
Turn On Time (Typ)	350	ns
Turn Off Time (Typ)	300	ns
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
Package / Case	8-DIP (0.300", 7.62mm)	—
Mounting Type	Through Hole	—
Product Status	Active	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the 6N136 are classified based on the following substitution criteria:

Primary Substitution Parameters:

Package / Case: 8-DIP (0.300", 7.62mm) — mechanical compatibility requirement
Output Type: Transistor with Base — functional requirement
Number of Channels: 1 — circuit configuration requirement
Input Type: DC — signal type compatibility
Mounting Type: Through Hole — assembly compatibility

Secondary Substitution Parameters:

Voltage - Isolation: 5000Vrms or lower (application-dependent)
Current Transfer Ratio: 19% to 50% @ 16mA (performance range)
Voltage - Output (Max): 20V (output capability)
Current - Output / Channel: 8mA (output current capacity)
Operating Temperature: -55°C to 100°C or compatible range

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

Substitutes are grouped into two categories: Direct Parametric Equivalents (matching isolation voltage and performance characteristics) and Functional Equivalents (meeting core electrical and mechanical requirements with lower isolation voltage ratings).

Parameter Comparison

Parameter	6N136 (Everlight)	QT4502 (QT Brightek)	QT4503 (QT Brightek)	HCPL-4562-000E (Broadcom)	6N136 (onsemi)
Voltage - Isolation	5000 Vrms	5000 Vrms	5000 Vrms	3750 Vrms	2500 Vrms
Number of Channels	1	1	1	1	1
Current Transfer Ratio (Min)	19% @ 16mA	19% @ 16mA	19% @ 16mA	—	19% @ 16mA
Current Transfer Ratio (Max)	50% @ 16mA	50% @ 16mA	50% @ 16mA	—	50% @ 16mA
Turn On Time (Typ)	350 ns	350 ns	350 ns	—	450 ns
Turn Off Time (Typ)	300 ns	350 ns	350 ns	—	500 ns
Output Type	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base	Transistor with Base
Voltage - Output (Max)	20 V	20 V	20 V	20 V	20 V
Current - Output / Channel	8 mA	8 mA	8 mA	8 mA	8 mA
Voltage - Forward (Vf) (Typ)	1.45 V	1.45 V	1.45 V	1.3 V	1.45 V
Current - DC Forward (If) (Max)	25 mA	25 mA	25 mA	12 mA	25 mA
Operating Temperature	-55 to 100 °C	-55 to 100 °C	-55 to 100 °C	-40 to 85 °C	-55 to 100 °C
Package / Case	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)	8-DIP (0.300", 7.62mm)
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Product Status	Active	Active	Active	Active	Obsolete
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

Direct Parametric Equivalents (5000Vrms Isolation):

QT4502 and QT4503 from QT Brightek (QTB) are direct parametric equivalents to the 6N136 Everlight part. Both devices match the 5000Vrms isolation voltage, current transfer ratio range (19% to 50% @ 16mA), output voltage and current specifications, and operating temperature range (-55°C to 100°C). Both are in active product status with ROHS3 compliance. QT4502 and QT4503 are functionally interchangeable with the 6N136 Everlight for applications requiring maximum isolation voltage performance. Inventory availability for QT4502 is 981 pieces and QT4503 is 941 pieces.

Functional Equivalent with Reduced Isolation Voltage (3750Vrms):

HCPL-4562-000E from Broadcom Limited is a functional equivalent suitable for applications where 3750Vrms isolation voltage is acceptable. This part maintains the same 8-DIP package, transistor with base output configuration, 20V maximum output voltage, and 8mA output current per channel. The forward voltage is lower (1.3V typical versus 1.45V), and maximum forward current is reduced to 12mA. Operating temperature range is -40°C to 85°C, which is narrower than the 6N136. HCPL-4562-000E is in active product status with ROHS3 compliance. Inventory availability is 1,700 pieces. This substitute is appropriate when isolation voltage requirements permit operation below 5000Vrms.

Lower Isolation Voltage Equivalent (2500Vrms):

The 6N136 from onsemi is a lower isolation voltage variant (2500Vrms) with matching current transfer ratio, output specifications, and operating temperature range. This part is in obsolete product status and is not recommended for new designs. The onsemi 6N136 exhibits slower switching performance (450ns turn-on, 500ns turn-off) compared to the Everlight 6N136 (350ns turn-on, 300ns turn-off).

Selection Criteria:

For applications requiring 5000Vrms isolation with active product status: select QT4502 or QT4503
For applications permitting 3750Vrms isolation with active product status: select HCPL-4562-000E
For legacy designs currently using onsemi 6N136: transition to Everlight 6N136 or QT4502/QT4503 for continued support

All recommended substitutes maintain ROHS3 compliance, 8-DIP through-hole package compatibility, and transistor with base output configuration.

Frequently Asked Questions (FAQ)

Q1: Can QT4502 or QT4503 be used as direct replacements for the 6N136 Everlight in existing circuit designs?

A: Yes. QT4502 and QT4503 are direct parametric equivalents with identical isolation voltage (5000Vrms), current transfer ratio range (19% to 50% @ 16mA), output voltage (20V max), output current (8mA), and operating temperature range (-55°C to 100°C). Both are in active product status with ROHS3 compliance. Pin configuration and 8-DIP package dimensions are identical. No circuit modifications are required.

Q2: What is the key difference between the 6N136 Everlight and HCPL-4562-000E Broadcom?

A: The primary difference is isolation voltage rating. The 6N136 Everlight provides 5000Vrms isolation, while HCPL-4562-000E provides 3750Vrms isolation. Both share the same 8-DIP package, transistor with base output, 20V maximum output voltage, and 8mA output current. HCPL-4562-000E has a lower forward voltage (1.3V vs 1.45V) and lower maximum forward current (12mA vs 25mA). Operating temperature range for HCPL-4562-000E is -40°C to 85°C, narrower than the 6N136 range of -55°C to 100°C. HCPL-4562-000E is suitable only for applications where 3750Vrms isolation is sufficient.

Q3: Why is the onsemi 6N136 listed as obsolete, and should it be used in new designs?

A: The onsemi 6N136 is in obsolete product status and is not recommended for new designs. While it maintains the same current transfer ratio and output specifications as the Everlight 6N136, it provides only 2500Vrms isolation voltage and exhibits slower switching performance (450ns turn-on, 500ns turn-off versus 350ns and 300ns for the Everlight). For new designs, use the active Everlight 6N136 or QT4502/QT4503 equivalents.

Q4: Are all substitute parts RoHS3 compliant?

A: Yes. The 6N136 Everlight, QT4502, QT4503, and HCPL-4562-000E are all ROHS3 compliant. All parts have Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.

Q5: What is the difference in switching speed between the 6N136 Everlight and QT4502/QT4503?

A: The 6N136 Everlight has turn-on time of 350ns and turn-off time of 300ns. QT4502 and QT4503 have turn-on time of 350ns and turn-off time of 350ns. The difference in turn-off time (300ns vs 350ns) is 50ns, which may be significant in high-speed switching applications. For applications with strict timing requirements, verify that the 50ns difference in turn-off time is acceptable.

Q6: Can HCPL-4562-000E be used in applications requiring 5000Vrms isolation?

A: No. HCPL-4562-000E provides only 3750Vrms isolation voltage and is not suitable for applications requiring 5000Vrms isolation. Use QT4502, QT4503, or the 6N136 Everlight for 5000Vrms isolation requirements.

Q7: What is the operating temperature range difference between the 6N136 Everlight and HCPL-4562-000E?

A: The 6N136 Everlight operates from -55°C to 100°C, while HCPL-4562-000E operates from -40°C to 85°C. The Everlight part has a wider operating range, extending 15°C lower at the minimum and 15°C higher at the maximum. For applications requiring operation below -40°C or above 85°C, use the 6N136 Everlight or QT4502/QT4503.

Q8: Are there any differences in forward voltage characteristics between substitute parts?

A: Yes. The 6N136 Everlight, QT4502, and QT4503 have typical forward voltage (Vf) of 1.45V with maximum forward current (If) of 25mA. HCPL-4562-000E has lower typical forward voltage of 1.3V with lower maximum forward current of 12mA. This difference may affect input circuit design and current limiting requirements. Verify input circuit compatibility when substituting HCPL-4562-000E.

Q9: What inventory levels are available for each substitute part?

A: 6N136 Everlight: 50,100 pieces; QT4502: 981 pieces; QT4503: 941 pieces; HCPL-4562-000E: 1,700 pieces. For high-volume requirements, the 6N136 Everlight offers the largest available inventory.

Q10: Are all substitute parts available in the same packaging format?

A: All substitute parts use 8-DIP (0.300", 7.62mm) through-hole package. Mechanical compatibility is maintained across all parts. Packaging format (Tube vs standard) may vary by supplier, but the component package itself is identical.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message