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Introduction
Specifications
Environmental
Performance curves
Schematics
Physical characteristics
Tape & Reel
Soldering/Washing

Datasheet 3D Models

Isolation Transformer

isoSPI interface

ZA975x isolation transformers provide galvanic isolation for the isoSPI^TM communication interface. The hipot isolation is up to 5 kV, which makes it ideal for battery management systems (BMS) of 400 V, 800 V, or higher in HEV/EV applications with sufficient design margin. It also suitable for industrial applications requiring data transfer with galvanic isolation.

Designed to work with isoSPI interface devices to provide isolation barrier
High isolation designs with 3 to 8 mm of creepage and clearance
- Creepage and clearance dimensions based on Material Grade IIIa.
AEC-Q200 Grade 1 (−40°C to +125°C)

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Count	Unit price
1	$4.81
100	$4.22
300	$3.18
600	$1.92
1200	$1.47
2400	$1.28
5000	$1.17

For high volume or non-stock items, request a quote.

Packaging

D = 13" machine-ready reel

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Specifications

Electrical specifications at 25°C.

Part number (Hover for schematics)	Inductance at 0A (µH) 1 (Tolerance: ±30%)	DCR max		Leakage Inductance max (µH) 2	Turns Ratio	Volt-time product (V-µs) 3	Isolation Voltage (Vrms) 4
Part number (Hover for schematics)	Inductance at 0A (µH) 1 (Tolerance: ±30%)	Pri (Ω)	Sec (mΩ)	Leakage Inductance max (µH) 2	Pri : Sec	Volt-time product (V-µs) 3	Isolation Voltage (Vrms) 4
ZA9756-AED	215	0.22	260.00	0.92	1 : 1	31	3000
ZA9757-AED	225	0.22	260.00	0.92	1 : 1	31	4000
ZA9758-AED	215	0.22	260.00	0.92	1 : 1	31	5000

Notes

Inductance is for primary windings measured at 100 kHz, 0.01 Vrms, 0 Adc.
Leakage inductance measured between at 100 kHz, 0.1 Vrms with secondary pins shorted.
Volt-time product is for the primary, between pin 2 and 3.
One minute isolation (hipot) measured between primary and secondary.

Termination:

RoHS tin-silver (96.5/3.5) over tin over nickel over phos bronze.

Packaging:

D = 13″ machine-ready reel. EIA-481 embossed plastic tape (ZA9756 600 per full reel; ZA9757 350 per full reel; ZA9758 700 per full reel). Quantities less than full reel available: in tape (not machine ready) or with leader and trailer ($25 charge).

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

–40°C to +125°C

Storage temperature range:

Component: –40°C to +125°C
Tape and reel packaging: –40°C to +80°C

Maximum part temperature:

+165°C (ambient + temp rise)

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

See FIT/MTBF Calculations

Performance curves

Insertion Loss

Schematics

Physical characteristics

ZA9756-AE

ZA9757-AE

ZA9758-AE

Tape and Reel specification

Parts per reel	Reel dimensions (mm)					Tape dimensions (mm)
13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
600 (ZA9756-AE)	330	100	13	30,4	24,4	24	16	4	2	6,11	0,37
350 (ZA9757-AE)	330	100	13	30,4	24,4	24	16	4	2	10,8	0,5
700 (ZA9758-AE)	330	100	13	38,4	32,4	32	16	4	2	5,72	0,4

General specification

Core Material:

Ferrite

Weight:

0.95 − 1.15 g

Packaging:

ZA9756-AE 600/13″ reel; Plastic tape: 24 mm wide, 0.37 mm thick, 16 mm pocket spacing, 6.11 mm pocket depth
ZA9757-AE 350/13″ reel; Plastic tape: 24 mm wide, 0.5 mm thick, 16 mm pocket spacing, 10.8 mm pocket depth
ZA9758-AE 700/13″ reel; Plastic tape: 32 mm wide, 0.4 mm thick, 16 mm pocket spacing, 5.72 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.

Isolation Transformer

isoSPI interface