Hammond 227T 40VA 40V CT 400Hz Epoxy PCB Transformer
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224-955-1644Key Features
- 40 VA at 400 Hz from a 115 VAC primary
- Series secondary: 40V C.T. @ 1A
- Parallel secondary: 20V @ 2A
- Epoxy cast to withstand shock and severe environments
- Two coil design: balanced windings, low magnetic radiation, no electrostatic shield
- PCB mount, 1.05 in max height, 0.05 in (1 mm) pin diameter
- 45 C temperature rise, 5.7% regulation
The 227T is a 40 VA, 400 Hz power transformer from the 227 Series, designed to mount on a printed circuit board and run from a 115 VAC primary. Its secondary is rated 40V C.T. @ 1A with the windings in series, or 20V @ 2A with them in parallel, giving designers two output options from one part.
The 227T provides 40 V centre-tapped at 1 A, or 20 V at 2 A in parallel, from a 400 Hz, 40 VA design with 5.7% regulation.
The transformer is epoxy cast to withstand shock and severe environments. A two coil design provides balanced windings and low magnetic radiation, so no electrostatic shield is required.
Per the series table, the 227T stands 1.05 in high (max) with a pin diameter of 0.05 in (1 mm); shipping weight is 0.37 lbs (0.17 kg). Temperature rise is 45 C and regulation is 5.7%. The part is RoHS and REACH compliant, and it is classified under UNSPSC 39121301.
Note: the manufacturer states that the 226-227-228 product line will soon be discontinued as a stocked series and is available while quantities last.
Ideal For
- On-board 40V centre-tapped or 20V supply for 115 VAC equipment
- 400 Hz PCB-mounted power conversion
- Circuit boards exposed to shock or severe environments
- Replacement of an existing epoxy-cast PCB transformer
Overview
| Series | 227 Series (226-227-228 Series) |
| Description | Transformer, PCB mount, epoxy-cast, 40VA, 40V C.T. @ 1A / 20V @ 2A, 227 series |
| Product Type | Power transformer, PCB mount, epoxy cast |
| Availability Note | Series will soon be discontinued as a stocked series; available while quantities last |
| Short Description | POWER PCB 40VA 115V |
Dimensions
| High (Max) | 1.05 in |
| Pin Diameter | 0.05 in (1 mm) |
Electrical
| Frequency | 400 Hz |
| Regulation | 5.7% |
| Power Rating | 40 VA |
| Primary Voltage | 115 VAC |
| Temperature Rise | 45 C |
| Secondary (RMS) Series | 40V C.T. @ 1A |
| Secondary (RMS) Parallel | 20V @ 2A |
Identifiers
| UPC | 623980267876 |
| UNSPSC | 39121301 |
| Part Number | 227T |
Packaging & Shipping
| Shipping Weight | 0.37 lbs (0.17 kg) |
| Weight (Series Table) | 0.38 lbs |
Construction & Finish
| Mounting | PCB mount |
| Construction | Epoxy cast |
| Winding Design | Two coil design, balanced windings, low magnetic radiation; no electrostatic shield required |
Compliance & Certifications
| RoHS Compliant | Yes |
| REACH Compliant | Yes |
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Frequently Asked Questions
What outputs does the 227T provide?▾
With the secondaries in series it delivers 40V C.T. @ 1A; in parallel it delivers 20V @ 2A. The rating is 40 VA.
What primary voltage and frequency is the 227T for?▾
It uses a 115 VAC primary and is a 400 Hz model.
How is the 227T mounted?▾
It is a PCB mount transformer with a 0.05 in (1 mm) pin diameter and a maximum height of 1.05 in.
What are the temperature rise and regulation of the 227T?▾
Temperature rise is 45 C and regulation is 5.7%.
Is the 227T still available?▾
The manufacturer notes the 226-227-228 line will soon be discontinued as a stocked series and is available while quantities last.
Does it need an electrostatic shield?▾
No. The two coil design provides balanced windings and low magnetic radiation, so no electrostatic shield is required.
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