Datasheet

ZG3504-BE Pulse Transformer

For isolated gate driver bias supply

The ZG3504-BE series pulse transformer feature low interwinding capacitance to minimize EMI and deliver exceptionally high Common Mode Transient Immunity (CMTI), making them ideal for On-Board Chargers (OBCs), DC-DC converters, and traction inverters. Designed for high-power reliability and fully AEC-Q200 qualified, this series ensures robust performance under the rigorous electrical, thermal, and vibration conditions of modern electric vehicle systems.

Optimized for QFN AHV85003/043 chipset by Allegro MicroSystems
Ideal for isolated power supplies in data center, automotive OBC, and industrial applications
Low interwinding capacitance to minimize EMI and achieve high CMTI
AEC-Q200 qualified

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Specifications

Electrical specifications at 25°C.

Part number 1 (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±25%)	DCR max 3		Leakage Inductance ±25% (µH) 4	Turns Ratio	Capacitance max (pF) 5	Isolation Voltage (Vrms) 6
Part number 1 (Hover for schematics)	Inductance at 0A (µH) 2 (Tolerance: ±25%)	Pri (Ω)	Sec (Ω)	Leakage Inductance ±25% (µH) 4	Pri : Sec	Capacitance max (pF) 5	Isolation Voltage (Vrms) 6
ZG3504-BEC	7.2	0.11	0.32	0.14	1 : 3	4	2800

Notes

When ordering, please specify packaging code: e.g. ZG3504-BEC
Inductance measured at 1 MHz, 0.1 Vrms, 0 ADC on an Agilent 4263B (or equivalent).
DCR is measured on a Keithley 580 Micro-ohmmeter (or equivalent)
Leakage Inductance LL is measured at 1 MHz, 0.1 Vrms on an Agilent 4263B (or equivalent) with pins 3, 4 shorted.
Interwinding capacitance is measured from primary to secondary at 250 KHz, 0.1 Vrms.
2800 Vrms, 4000 VDC; one minute isolation (hipot) measured between primary and secondary. 4.9 mm creepage and clearance Material Group IIIa (175 ≤ CTI < 400).

Designed to meet the following requirements. Please contact [email protected] for questions about suitability for use in other application conditions.

Example 1* Reinforced insulation example	Example 2* Basic insulation example	Example 3 Basic insulation example
Working voltage 240 V	Working voltage 600 V	Working voltage 490 V
Altitude 5000 m	Altitude 5000 m	Altitude 5000 m
Overvoltage category II	Overvoltage category II	Overvoltage category II
Pollution degree 2	Pollution degree 2	Pollution degree 2

The transformer contains 7 mm creepage and 4.9 mm clearance between primary and secondary windings with Material Group IIIa (175 ≤ CTI < 400).

* For examples 1 and 2, Material Group I PCB is needed. If using Material Group IIIa or IIIb PCB, a groove is needed between primary and secondary pads in order to maintain the transformer’s 8 mm creepage when mounted.

Termination:

E = RoHS compliant tin over nickel over silver glass frit.

Packaging:

C = 7" reel, machine-ready
EIA-481 embossed plastic tape. (350 per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).
D = 13" reel, machine-ready
EIA-481 embossed plastic tape. Factory order only, not stocked (1500 parts per full reel).

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

–40°C to +125°C

Storage temperature range:

Component: –40°C to +140°C
Tape and reel packaging: –40°C to +80°C

Maximum part temperature:

+140°C

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations

Schematics

Physical characteristics

Tape and Reel specification

Parts per reel		Reel dimensions (mm)					Tape dimensions (mm)						Orientation
7" (178 mm)	13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
350	1500*	178/330	60/100	13	22,4	16,4	16	8	4	2	5,5	0,40

* Special order

General specification

Core Material:

Ferrite

Weight:

0.53 – 0.54 g

Packaging:

350/7″ reel; 1500/13″ reel Plastic tape: 16 mm wide, 0.4 mm thick, 8 mm pocket spacing, 5.5 mm pocket depth

Soldering/Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity)

Resistance to soldering heat:

Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles

Refer to Soldering Coilcraft Components before soldering.

PCB Washing:

Tested with pure water or alcohol only. More info.

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ZG3504-BE Pulse Transformer

For isolated gate driver bias supply

Selected configuration not available

Specifications

Termination:

Packaging:

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

Warning