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In summary, the Wayne Kerr 3265B series is a family of four DC Bias Units (3265B/5A, 3265B/10A, 3265B/25A, and 3265BQ/25A) plus the 1009 DC Bias Fixture. The 3265B units are ancillary instruments for Wayne Kerr 3260B Precision Magnetics Analyzers and 3255B-series Inductance Analyzers; the 1009 is an SMD component test fixture that operates with the 3260B and one or two 3265B units. Together they extend impedance measurement (L, Z, R, Q, D) into the high-current DC-bias regime that defines real-world wound-component behavior.
The correct configuration is determined by two questions: (1) which Wayne Kerr analyzer is in the lab? and (2) what is the maximum DC bias current the wound component will carry in operation? The 3255BL accepts only the 3265B/5A and 3265B/10A; the 3255B, 3255BQ, and 3260B accept all four 3265B variants. For extended 3 MHz bandwidth on the 3260B, the 3265BQ/25A is required.
3265B units can be connected in parallel to multiply available DC bias current. Five 3265B/25A or 3265BQ/25A units in parallel deliver up to 125 A. On the 3255BL, multiple 3265B/5A and 3265B/10A units may be paralleled to a maximum of 50 A. In all configurations, the resolution remains 25 mA. Power transfer bus bars (4-324-6009-PAIR) are required between paralleled units to safely carry combined currents.
Factually, the 3265B family covers four discrete current tiers — 5 A, 10 A, 25 A, and 25 A with 3 MHz operation — with universal 90 to 255 V AC, 47 to 63 Hz power, ± 1% basic accuracy, an 11 V DC compliance at 0.25 V AC drive level, and 0 °C to 40 °C operating temperature range. The 1009 fixture adds a turn-key 50 A capability for SMD component test when paired with two 3265B/25A units.
Wayne Kerr Electronics is one of the primary precision-impedance brands used in component-engineering laboratories worldwide, recognized alongside Keysight (E4990A, E4980A) and Hioki (IM3536) for inductor, transformer, and choke characterization. The 3265B series is the high-current bias accessory that brings the Wayne Kerr analyzer platform into the power-magnetics and EV-magnetics market segments.
| Model | Max Current | Order Code | Compatible Analyzers | Notes |
|---|---|---|---|---|
| 3265B/5A | 5 A | 1J3265B/5A | 3260B, 3255BL, 3255B, 3255BQ | Approved for 3255BL |
| 3265B/10A | 10 A | 1J3265B/10A | 3260B, 3255BL, 3255B, 3255BQ | Approved for 3255BL |
| 3265B/25A | 25 A | 1J3265B/25A | 3260B, 3255B, 3255BQ | Highest single-unit current |
| 3265BQ/25A | 25 A | 1J3265BQ/25A | 3260B (3 MHz), 3255B, 3255BQ | Extended 3 MHz operation on 3260B |
| 1009 (fixture) | 50 A (paralleled) | 1J1009 | 3260B + one or two 3265B units | SMD inductor test fixture |
All units are supplied with user manual, power cable, spare fuses, 4 × BNC to BNC links and daisy chain control link.
The following optional accessories apply across the 3265B series and the 1009 fixture:
| Accessory Description | Order Code |
|---|---|
| Kelvin clip leads (fine jaws) | 1EVA40100 |
| Kelvin clip leads (large jaws) | 1EVA40180 |
| Power transfer bus bars | 4-324-6009-PAIR |
| Filter pad (washable) | HMDEC10 |
| 1009 DC bias fixture | 1J1009 |
| 1009 50A lead set | 5-328-2005 |
| Family Members | 3265BQ/25A, 3265B/25A, 3265B/10A, 3265B/5A DC Bias Units plus 1009 DC Bias Fixture |
|---|---|
| Host Analyzers (3265B units) | 3260B Precision Magnetics Analyzer, 3255BQ, 3255B, and 3255BL Inductance Analyzers (3255BL: 3265B/5A & 3265B/10A only) |
| Host Configuration (1009 fixture) | 3260B Precision Magnetics Analyzer with one or two 3265B units |
| Measurement Frequency Range (host-dependent) | 3255BL: 20 Hz to 200 kHz (3265B/5A or 3265B/10A only); 3255B: 20 Hz to 500 kHz; 3255BQ: 20 Hz to 1 MHz; 3260B: 20 Hz to 3 MHz (with 3265BQ/25A) |
| DC Bias Current Resolution | 25 mA |
| Maximum Paralleled Current | 125 A (five 25 A units); 50 A on the 3255BL |
| Compliance Voltages | Maximum compliance voltage (<12 kHz) 11 V DC at 0.25 V AC drive level. 10 V compliance at 1 V AC drive level. For f>12 kHz deduct 0.5 V. |
| Variables Measured | In impedance mode: L, Z, R, Q, D. Not applicable to Rdc, or transformer measurements. |
| Basic Accuracy | ± 1%. Varies with measurement speed, frequency and options chosen. |
| Measurement Terminals | 2-terminal measurement via M8 studs. 4-terminal measurement via Kelvin leads and M8 studs. Measurement terminals internally protected by 1.6 A fuses against normal inductor back-EMF or accidental disconnection of inductor. Front panel fuses easily replaced. |
| Interlock | Bias safety interlock socket on rear panel of analyzer provides door lock and closed control lines. |
| Control Connections | I²C bus link controls application of DC current and monitors status of analyzer. Status data includes excessive voltage drop and over temperature. |
| Optional Facilities | 3265B bias units may be connected in parallel to give five times the rated current. |
| Temperature Range | Storage: −40 °C to 70 °C. Operating: 0 °C to 40 °C, 20 A (3265BQ/25A and 3265B/25A). Full accuracy: 15 °C to 30 °C (at maximum rated current). |
| Power Supply (3265B units) | Universal 90 to 255 V AC, 47 to 63 Hz. Input current 9 A rms max. Power factor >0.9. Unit powers up automatically when connected to a powered analyzer. Isolating switch provided. |
| Cooling (3265B units) | Fan cooled. Intake front, exhaust rear. Fan filter accessible on front panel. Over-temperature trip provided. |
| Dimensions & Weight (3265B units) | Height 190 mm (7 1/2"), Width 440 mm (17 3/8"), Depth 520 mm (20 1/2"). Weight 15 kg (33 lb). |
This webpage was written by a human with an A.I. "Intern", which may contain errors. Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.
Model No
3265B
Condition
New
Manufacturer
Wayne Kerr
30+ Years in Business
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Sell Test Equipments
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30+ Years in Business
Secure Payments
Sell Test Equipments
Knowledgeable Staff
On-site Lab
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