TFS7707H Equivalent & Substitute Parts

Part Overview

The TFS7707H is an active, production-status DC-DC controller IC manufactured by Power Integrations, part of the HiperTFS™-2 series. This device functions as a multi-topology regulator controller supporting flyback and forward converter topologies with step-up and step-down capability. The TFS7707H is designed for applications requiring isolated or non-isolated positive output regulation with dual-output configuration and single-phase operation.

Substitute parts are identified when design requirements necessitate alternative inventory availability, extended lead times, or specific manufacturing lot requirements while maintaining identical electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Topology	Flyback, Forward Converter
Function	Step-Up, Step-Down
Output Configuration	Positive, Isolation Capable
Number of Outputs	2
Output Phases	1
Voltage Supply (Vcc/Vdd)	Up to 11.5V
Switching Frequency	66kHz, 132kHz
Maximum Duty Cycle	63%
Output Type	Transistor Driver
Control Features	Enable, Reset
Operating Temperature Range	-40°C ~ 150°C (TJ)
Package Type	16-SSIP, 12 Leads, Exposed Pad, Formed Leads (eSIP-16F)
Mounting Type	Through Hole
RoHS Compliance	RoHS Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the TFS7707H is limited to parts meeting all of the following criteria:

Mandatory Electrical Parameters:

Topology: Flyback and Forward Converter support
Function: Step-Up and Step-Down capability
Output Configuration: Positive and Isolation Capable
Number of Outputs: 2
Output Phases: 1
Supply Voltage: Up to 11.5V
Switching Frequency: 66kHz and 132kHz operation
Maximum Duty Cycle: 63%
Output Type: Transistor Driver
Control Features: Enable and Reset functions
Operating Temperature: -40°C ~ 150°C (TJ)

Mandatory Mechanical Parameters:

Package: 16-SSIP with 12 Leads, Exposed Pad, Formed Leads (eSIP-16F)
Mounting: Through Hole
Supplier Device Package: eSIP-16F

Mandatory Compliance Parameters:

RoHS Status: RoHS Compliant
Moisture Sensitivity Level: 1 (Unlimited)
REACH Status: REACH Unaffected
ECCN: EAR99
HTSUS: 8542.39.0001

The TFS7708H meets all substitution criteria and is classified as a parametric equivalent.

Parameter Comparison

Parameter	TFS7707H	TFS7708H	Match
Manufacturer	Power Integrations	Power Integrations	✓
Series	HiperTFS™-2	HiperTFS™-2	✓
Product Status	Active	Active	✓
Topology	Flyback, Forward Converter	Flyback, Forward Converter	✓
Function	Step-Up, Step-Down	Step-Up, Step-Down	✓
Output Configuration	Positive, Isolation Capable	Positive, Isolation Capable	✓
Number of Outputs	2	2	✓
Output Phases	1	1	✓
Output Type	Transistor Driver	Transistor Driver	✓
Voltage Supply (Vcc/Vdd)	Up to 11.5V	Up to 11.5V	✓
Switching Frequency	66kHz, 132kHz	66kHz, 132kHz	✓
Maximum Duty Cycle	63%	63%	✓
Synchronous Rectifier	No	No	✓
Clock Sync	No	No	✓
Control Features	Enable, Reset	Enable, Reset	✓
Operating Temperature	-40°C ~ 150°C (TJ)	-40°C ~ 150°C (TJ)	✓
Mounting Type	Through Hole	Through Hole	✓
Package / Case	16-SSIP, 12 Leads, Exposed Pad, Formed Leads	16-SSIP, 12 Leads, Exposed Pad, Formed Leads	✓
Supplier Device Package	eSIP-16F	eSIP-16F	✓
RoHS Status	RoHS Compliant	RoHS Compliant	✓
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	✓
REACH Status	REACH Unaffected	REACH Unaffected	✓
ECCN	EAR99	EAR99	✓
HTSUS	8542.39.0001	8542.39.0001	✓

Engineering Selection Recommendations

The TFS7708H is a direct parametric equivalent to the TFS7707H. Both devices are manufactured by Power Integrations, belong to the HiperTFS™-2 series, and maintain active product status. Selection between these parts is based on inventory availability and procurement requirements rather than technical differentiation.

Both parts carry identical compliance certifications: RoHS Compliant, REACH Unaffected, ECCN EAR99, and HTSUS 8542.39.0001. Both devices feature Moisture Sensitivity Level 1 (Unlimited), indicating no special handling requirements during storage or assembly.

The eSIP-16F package format with through-hole mounting is consistent across both parts, ensuring mechanical and electrical compatibility in existing PCB designs without layout modification.

Frequently Asked Questions (FAQ)

Q: Can TFS7708H replace TFS7707H in production designs?

A: Yes. The TFS7708H is a parametric equivalent with identical electrical specifications, package format, and compliance certifications. No design changes are required for substitution.

Q: Are there differences in switching frequency operation between TFS7707H and TFS7708H?

A: No. Both parts operate at 66kHz and 132kHz switching frequencies with identical 63% maximum duty cycle specifications.

Q: Do both parts support the same topologies and output configurations?

A: Yes. Both TFS7707H and TFS7708H support flyback and forward converter topologies with step-up and step-down functionality, positive and isolation-capable output configuration, and dual-output, single-phase operation.

Q: Is the eSIP-16F package identical for both parts?

A: Yes. Both parts use the 16-SSIP package with 12 leads, exposed pad, and formed leads in eSIP-16F format. Through-hole mounting is identical, requiring no PCB redesign.

Q: What is the operating temperature range for both parts?

A: Both TFS7707H and TFS7708H operate across -40°C to 150°C junction temperature (TJ), supporting identical thermal specifications.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both parts are RoHS Compliant, REACH Unaffected, classified as EAR99, and share the same HTSUS code 8542.39.0001. Moisture Sensitivity Level is 1 (Unlimited) for both.

Q: What control features are available on both parts?

A: Both TFS7707H and TFS7708H provide Enable and Reset control features with no serial interfaces. Synchronous rectifier and clock sync functions are not supported on either part.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message