TIL113 Equivalent & Substitute Parts

Part Overview

The TIL113 is an optoisolator with Darlington output and base connection, rated for 5300Vrms isolation voltage. Manufactured by onsemi, this component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The TIL113 operates as a single-channel optoisolator in a 6-DIP through-hole package, suitable for applications requiring high-voltage isolation with DC input and Darlington output configuration.

Key Parameters

Parameter	Value
Manufacturer Part Number	TIL113
Manufacturer	onsemi
Category	Optoisolators
Number of Channels	1
Voltage - Isolation	5300Vrms
Current Transfer Ratio (Min)	300% @ 10mA
Output Type	Darlington with Base
Voltage - Output (Max)	30V
Voltage - Forward (Vf) (Typ)	1.2V
Current - DC Forward (If) (Max)	100 mA
Vce Saturation (Max)	1.25V
Operating Temperature	-55°C ~ 100°C
Package / Case	6-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution for the TIL113 optoisolator is determined by the following critical parameters:

Isolation Voltage: Minimum 5000Vrms to maintain electrical safety margins
Output Configuration: Darlington with Base output type required for circuit compatibility
Number of Channels: Single channel only
Package Type: 6-DIP through-hole mounting
Input Type: DC input
Operating Temperature Range: -55°C to 100°C minimum
Current Transfer Ratio: Minimum 300% @ 10mA

The substitute parts TIL113M, 4N32, and TIL113 meet these criteria with variations in isolation voltage, output voltage rating, and current transfer ratio specifications. All candidates maintain the required Darlington output configuration and 6-DIP package format.

Parameter Comparison

Parameter	TIL113 (onsemi)	TIL113M (Fairchild)	4N32 (Vishay)
Voltage - Isolation	5300Vrms	5000Vrms	5300Vrms
Current Transfer Ratio (Min)	300% @ 10mA	300% @ 10mA	500% @ 10mA
Turn On / Turn Off Time (Typ)	350ns, 55µs	5µs, 100µs (Max)	5µs, 100µs (Max)
Output Type	Darlington with Base	Darlington with Base	Darlington with Base
Voltage - Output (Max)	30V	55V	30V
Voltage - Forward (Vf) (Typ)	1.2V	1.2V	1.25V
Current - DC Forward (If) (Max)	100 mA	60 mA	60 mA
Vce Saturation (Max)	1.25V	1.2V	1V (Typ)
Operating Temperature	-55°C ~ 100°C	-55°C ~ 100°C	-55°C ~ 100°C
Package / Case	6-DIP (0.300", 7.62mm)	6-DIP (0.400", 10.16mm)	6-DIP (0.300", 7.62mm)
Product Status	Obsolete	Active	Obsolete

Engineering Selection Recommendations

TIL113M (Fairchild Semiconductor) is the preferred active substitute. It maintains identical current transfer ratio and forward voltage specifications while offering higher maximum output voltage (55V vs 30V). The TIL113M is currently in active production status, ensuring long-term availability. Package dimensions differ slightly (0.400" vs 0.300"), requiring PCB layout verification for through-hole spacing compatibility.

4N32 (Vishay Semiconductor Opto Division) provides an alternative with superior current transfer ratio (500% @ 10mA) and lower Vce saturation voltage (1V typical). This part matches the original 6-DIP package dimensions (0.300", 7.62mm) and isolation voltage (5300Vrms). However, 4N32 is also classified as obsolete, limiting long-term procurement viability.

TIL113 (onsemi) is the original part number. Due to obsolete status, this part should not be selected for new designs or long-term production requirements.

Frequently Asked Questions (FAQ)

Q: Can TIL113M be used as a direct replacement for TIL113?

A: TIL113M is functionally compatible for most applications. The primary consideration is PCB layout: TIL113M uses a 0.400" (10.16mm) DIP package versus TIL113's 0.300" (7.62mm) package. Verify through-hole spacing on your PCB before substitution. Electrical parameters are compatible.

Q: What is the key difference between 4N32 and TIL113?

A: Both parts share 5300Vrms isolation voltage and 6-DIP (0.300") package dimensions. The 4N32 offers higher current transfer ratio (500% vs 300%) and lower saturation voltage (1V typical vs 1.25V max), providing improved switching performance. However, 4N32 is obsolete, making TIL113M the recommended active alternative.

Q: Why does TIL113M have a higher maximum output voltage (55V vs 30V)?

A: This is a design difference between manufacturers. The higher rating provides greater design margin for applications with higher output voltage requirements. For circuits designed around 30V maximum, both specifications are acceptable.

Q: Are all substitute parts rated for the same isolation voltage?

A: TIL113 and 4N32 are both rated 5300Vrms. TIL113M is rated 5000Vrms, which is 300Vrms lower. For applications requiring 5300Vrms isolation, verify system requirements before selecting TIL113M.

Q: What compliance certifications apply to these parts?

A: All three parts carry ECCN EAR99 classification and HTSUS code 8541.49.8000. TIL113M and TIL113 have REACH Unaffected status. The 4N32 is ROHS3 Compliant. Verify compliance requirements for your specific application and region.

Q: Can these parts be used interchangeably in existing designs?

A: Electrical substitution is possible with circuit verification. Physical package differences (particularly TIL113M's 0.400" DIP spacing) require PCB layout confirmation. Consult component datasheets for detailed pin configuration and timing specifications before implementation.

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