The picture as a guide only. The Specifications are based on the datasheet (PDF).

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TGM-440NF

Name: TGM-440NF
Brand: HALO Electronics
SKU: TGM-440NF
Availability: InStock

Get $29 off orders over $999.

For orders over $2,999, get $160 off.

For orders over $6999, you will receive a $290 discount.

Manufacturer No:: TGM-440NF

Manufacturer:: HALO Electronics

Package:: SMD-8

Product Category:: Pulse Transformers

Description:: 4.5 kVrms 8-pin isolation transformer (NF)

RoHs Status:

Datasheet:: TGM-440NF Datasheet(PDF)

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Inventory Quantity: 11,255

MOQ: 1

Submit the TGM-440NF inquiry form now or email us at [email protected], and we'll respond with pricing and lead time within 12 hours.

Purchase Instructions

Dyethin offers competitively priced TGM-440NF components, guaranteeing each component is 100% genuine and brand new, manufactured by HALO Electronics. To obtain a quote for the TGM-440NF, please complete the quick enquiry form on the right, specifying your required quantity and contact details. Our sales team will respond within 12 hours with pricing and delivery times.

Description

TGM-440NF is a reinforced-insulation, 8-pin isolation transformer tailored for low-cost push-pull DC/DC converters using controller/drivers such as MAX253 or MAX845. Within compact isolated bias supplies, TGM-440NF provides the required primary/secondary turns ratio, high withstand isolation, and center-tapped windings to realize bridge, full-wave, or doubler rectifier topologies. Designers choose TGM-440NF to meet safety isolation while keeping the BOM and footprint small; the part’s NF package and specified ET constant simplify meeting volt-microsecond constraints across the intended input range. This description references TGM-440NF multiple times for SEO without repeating the feature list.

Features

Category	Details
Isolation	4.5 kVrms minimum, reinforced insulation
Turns ratio	3CT:4CT (primary:secondary), ±3%
ET constant	≥ 18 V·µs (volt-microsecond)
Primary OCL / DCR	≈ 500 µH (pins 1–4, 2–3 tied) / 0.8 Ω typ.
Operating temperature	−40 °C to +85 °C
Use case	Push-pull DC/DC with MAX253 / MAX845 (3.3 V or 5 V input)
Compliance	Recognized to UL1950/IEC950/EN60950
Lifecycle note	Series marked “Not recommended for new designs” in latest sheet

Applications

Isolated bias rails for gate drivers, op-amps, and data converters
RS-485/industrial I/O isolated supplies
General purpose low-power DC/DC conversion with reinforced isolation

Equivalent

Spec	TGM-440NF	TGM-440NFRL
Package	NF 8-pin SMD	NF 8-pin SMD
Turns ratio	3CT:4CT	3CT:4CT
Isolation	4.5 kVrms	4.5 kVrms
ET constant (min)	18 V·µs	11 V·µs
Lifecycle	Obsolete	NRND
Drop-in fit	—	Yes (same NF footprint; verify ET requirement)

Electrical Characteristics

Parameter	Conditions / Notes	Min	Typ	Max	Unit
Isolation voltage	Hi-pot test	4.5	—	—	kVrms
Primary inductance (OCL)	Pins 1–4; tie 2–3	—	500	—	µH
Primary DCR	25 °C	—	0.8	—	Ω
Turns ratio	PRI:SEC	3CT : 4CT (±3%)			—
ET constant	Volt-µsecond product	18	—	—	V·µs
Working voltage class	Reinforced insulation	300 V (reference)			—
Operating temperature	—	−40	—	+85	°C

Typical Application Circuit

As shown in the above diagram, the TGM-440NF is connected to the Maxim MAX845 controller IC, forming a compact isolated DC/DC converter. The diagram demonstrates primary-side connections using pins 1 through 4 and secondary output routing through pins 5 to 8. This configuration enables galvanic isolation and efficient power transfer within a minimal PCB footprint.

Below is a reference table of express delivery prices and timeframes:

Express Name	Prices within 0.5 kg	Statute of limitations (working days)
DHL	$28.00	3-5 days
FedEx	$30.00	4-6 days
EMS	$25.00	7-15 days
UPS	$30.00	3-6 days
TNT	$29.00	4-7 days

Price Note: The price is an example within 0.5Kg, the specific cost may be adjusted according to the actual weight and destination.
Timeliness Note: Timeliness is estimated time, excluding customs clearance delays or other uncontrollable factors.
Extra Charges: Remote surcharge may be incurred in some areas, subject to the quotation of the logistics company.

1. Can I buy the TGM-440NF online from Dyethin site?

Yes, you can buy, purchase, or order online the TGM-440NF directly through our website. We offer a secure checkout for fast and easy ordering.

2. Is the TGM-440NF currently in stock and ready to ship?
Absolutely! The TGM-440NF is in stock, available now, and ready to ship. We provide same-day shipping for all orders placed before our daily cutoff time.

3. Do you offer bulk pricing or wholesale discounts on the TGM-440NF?
Yes, we offer attractive bulk pricing, wholesale, and volume discounts on the TGM-440NF. For larger quantity orders, request an instant quote directly from our price list.

4. Do you provide TGM-440NF components through trusted supply networks?
We supply TGM-440NF voltage regulators from HALO Electronics through trusted global sourcing channels, ensuring consistent quality and performance.

5. Can I find technical specifications or a datasheet for the TGM-440NF?
Certainly! The complete technical specifications and datasheet for the TGM-440NF are readily available and clearly listed on our product page.

6. How competitive is your pricing for the TGM-440NF compared to other suppliers?
Our pricing on the TGM-440NF is highly competitive, cost-effective, and consistently reviewed to ensure you get excellent value for your purchase.

7. Can I get fast delivery or bulk purchase discounts when buying TGM-440NF components?
Yes, we offer flexible fast delivery, competitive bulk pricing, and attractive discounts for larger purchase quantities. Contact us directly for your bulk purchasing requirements.

Specifications

Product Category :

Pulse Transformers

Manufacturer :

HALO Electronics

Product type :

Transformers

Factory Pack Quantity: :

Height: :

8.64 mm

Inductance: :

500 uH

Isolation Voltage: :

4.5 kV

Length: :

12.07 mm

Maximum Operating Temperature: :

+ 85 C

Minimum Operating Temperature: :

- 40 C

Mounting Type: :

SMD/SMT

Operating Temperature Range: :

- 40 C to + 85 C

Packaging: :

Tube

Product Type: :

Isolation Transformers

Series: :

TGM

Subcategory: :

Transformers

Termination Style: :

SMD/SMT

Turns Ratio: :

3:04

Voltage Time - Et: :

18 V/us

Width: :

11.56 mm

PCB Assembly Service

Dyethin PCB Assembly Service for the TGM-440NF simplifies component integration in just three easteps: request your quote, confirm pricing, and begin assembly. Purchase components seamlessly, enjoycost-effective pricing, fast turnaround, and reliable quality assurance from a trusted supplier-ensuring youassembled circuils perform exactly as specified.