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ER9.5 Flyback Transformer DC Transformer

ER9.5 Flyback Transformer for DC-DC Converter and Switching Power Supply Applications

Characteristics:

· Simplified design-in integration
· Fewer external components needed
· Reduced PCB board space
· Low overall system cost

· Eliminates the need for optocouplers
· Stable voltage control with long-lasting reliability
· No aging-induced performance drift

· Shared external components for different output voltage ratings
· Straightforward customization of power supplies through a standard circuit, with only transformer and two feedback loop

Options:

· Design-friendly with minimal external components, space-saving and cost-effective
· Eliminates optocoupler need, ensures long-term reliable voltage control without aging
· Ideal for isolated power setups, sensor connections, telecom converters and PoE systems

Common Applications:

· Isolated power supply design
· Sensor interface circuits
· Isolated telecommunications converters
· Power over Ethernet (PoE)

FAQ：

Q：After sample testing, if parameter adjustments are needed (such as modifying inductance value or optimizing temperature resistance), do I need to reapply?
A：There is no need to go through the entire reapplication process. You only need to inform us of the specific parameters that need adjustment after testing. Our engineers will quickly optimize based on the original plan (e.g., replacing the core material or adjusting the coil wire diameter). The delivery cycle of the adjusted samples can be shortened to 5-7 working days, and we also provide free samples and supporting performance test reports.

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ER9.5 Flyback Transformer DC Transformer

Product Description

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Product Overview

The ER9.5 Flyback Transformer is designed for miniature switching power supplies and isolated DC-DC converter systems requiring compact size, stable high-frequency operation, and reliable electrical isolation performance.

Utilizing an ER9.5 ferrite core structure, the transformer provides efficient magnetic energy transfer and optimized PCB integration for modern compact electronic devices.

Its miniature magnetic platform is especially suitable for low-power flyback converter architectures where space-saving design, lightweight structure, and stable output performance are essential.

The transformer supports customized turns ratios, winding configurations, insulation specifications, and output parameters according to customer application requirements.

Key Features

ER9.5 miniature ferrite core structure
Designed for flyback converter topology
Stable high-frequency switching capability
Reliable isolated power conversion
Compact PCB integration design
Efficient magnetic energy transfer
Lightweight miniature structure
Flexible customization support

Typical Applications

Miniature DC-DC Converter Modules
Flyback Switching Power Supplies
Portable Electronic Devices
Embedded Power Systems
Smart Home Electronics
Compact Adapter Power Supplies
Consumer Electronic Products

Physical Propertie

Order Code

V_IN

V_out1
(V)

l_out1
(A)

V_out2
(V)

l_out2
(A)

V_out3
(V)

l_out3
(A)

V_out4
(V)

l_out4
(A)

V_aux
(V)

L
(μH)

l_SAT
(A)

(μH)

V_T
V(AC))

INF-ER9.5-15μH

5V(DC)

0.1

1:1:1:1

1.5

0.6

1500

Technical Specifications 屏幕截图 2025-10-23 144639

Customization & Procurement

Main Category	Subcategory	Details
MOQ	Prototyping & Small-batch	10 piece minimum order
	Sample Service	Free proofing & custom service, 5 free samples (shipping at buyer’s cost)
	Bulk Order	5,000 pieces and above with bulk pricing
Lead Time	All Standard Components	Shipped within 5–7 working days
	Custom Inductance / Pin Design (Sample)	Sample order confirmed within 5–7 working days
	Custom Inductance / Pin Design (Mass Order)	Shipped within 15–30 working days
Payment Terms	Main Payment Term	T/T in advance, L/C at sight
	Procurement Standard	Complies with global enterprise procurement standard for passive components
	Quality Deposit	No quality security deposit required
	Accepted Terms	FOB Shanghai / Nanjing / Hong Kong, T/T Advance
Quality Assurance	Manufacturing Defects	Free replacement for issues caused by manufacturing defects
Quality Assurance	Inspection Report	Batch inspection reports available as certification upon customer request
Packaging Specifications	Updated Packaging (2026)	Blister tray packaging; Sealed Tape & Reel for SMD products
Packaging Specifications	Optional Packaging	Vacuum sealed packaging for customers with strict moisture-proof requirements