Hammond 227D 5VA 20V CT 60Hz Epoxy PCB Transformer
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224-955-1644Key Features
- 5 VA at 60 Hz from a 115 VAC primary
- Series secondary: 20V C.T. @ 250ma
- Parallel secondary: 10V @ 500ma
- 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
- 25 C temperature rise, 20.07% regulation
The 227D is a 5 VA, 60 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 20V C.T. @ 250ma with the windings in series, or 10V @ 500ma with them in parallel, giving designers two output options from one part.
The 227D moves up to the 5 VA, 60 Hz case with a 20 V centre-tapped secondary at 250 mA, or 10 V at 500 mA in parallel.
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 227D stands 1.05 in high (max) with a pin diameter of 0.05 in (1 mm); shipping weight is 0.43 lbs (0.20 kg). Temperature rise is 25 C and regulation is 20.07%. 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 20V centre-tapped or 10V supply for 115 VAC equipment
- 60 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, 5VA, 20V C.T. @ 250ma / 10V @ 500ma, 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 5VA 115V |
Dimensions
| High (Max) | 1.05 in |
| Pin Diameter | 0.05 in (1 mm) |
Electrical
| Frequency | 60 Hz |
| Regulation | 20.07% |
| Power Rating | 5 VA |
| Primary Voltage | 115 VAC |
| Temperature Rise | 25 C |
| Secondary (RMS) Series | 20V C.T. @ 250ma |
| Secondary (RMS) Parallel | 10V @ 500ma |
Identifiers
| UPC | 623980267302 |
| UNSPSC | 39121301 |
| Part Number | 227D |
Packaging & Shipping
| Shipping Weight | 0.43 lbs (0.20 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 227D provide?▾
With the secondaries in series it delivers 20V C.T. @ 250ma; in parallel it delivers 10V @ 500ma. The rating is 5 VA.
What primary voltage and frequency is the 227D for?▾
It uses a 115 VAC primary and is a 60 Hz model.
How is the 227D 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 227D?▾
Temperature rise is 25 C and regulation is 20.07%.
Is the 227D 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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