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Document 1643-1

Isolated Buck Transformers
HalogenFree• Optimized for STMicroelectronics 38V/5W automotive Iso-Buckconverter A6986I and L6986I• Suitable for automotive isolated IGBT/SiC gate driver, On-board
charger for HEV/EV, Electric Traction Systems, and similar
applications• AEC-Q200 Grade 1 (−40°C to +125°C)• 3300 Vrms, one minute isolation (hipot) from primary to secondary

AEC

Q200 +125°C

Core material Ferrite
Terminations RoHS tin-silver-copper over tin over nickel over phos
bronze. Other terminations available at additional cost.
Weight 4.12 g
Ambient temperature –40°C to +125°C
Max Part Temperature +155°C (ambient + temperature rise)
Storage temperature Component: –40°C to +125°C
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat Max three 40 second reflows at+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL) 1 (unlimited floor life at <30°C /85% relative humidity)
Packaging 250/13″ reel Plastic tape: 32 mm wide, 0.5 mm thick,
20 mm pocket spacing, 11.2 mm pocket depth
PCB washing Tested to MIL-STD-202 Method 215 plus an additionalaqueous wash. See Doc787_PCB_Washing.pdf.		
L			Leakage
Part	 
at 0 A2
Isat3		inductancenumber1±10% (µH)(A)		max (µH)4

DCR max(Ohms)
Pri   SecZA9668-AED
ZB1175-AED

0.075
0.053

1818

3.5		 0.24
2.6		 0.18

1. Packaging:D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (250 parts per reel). Quantities less than full reelavailable: in tape (not machine ready) or with leader
and trailer ($25 charge).
2. Inductance is for the primary, measured at 500 kHz, 0.2 Vrms, 0 Adc.
3. DC current that causes the primary inductance drop 30% from its value
without current. Click for temperature derating information.
4. Leakage Inductance is for the primary, measured with secondary
windings shorted together.
5. 3300 Vrms, one minute isolation (hipot) from primary to secondary.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.

VOUT2

VIN

1.49
0.16

Turns ratio
pri : sec

Isolation5(Vrms)

Power(W)

Output1 : 5.81 : 1.633003300

5.8
1.629 V, 0.2 A
8 V, 0.2 A

SchematicConnect pin 1 to 2 and pin 3 to 4 on the PC board

VOUT2+VIN

N2IL1L1N2IL1

VOUT1

L1

VOUT2VOUT1N1N1N1
N=
N2

N=

Typical Iso-Buck Converter with single isolated output

N1
N2

Typical Iso-Buck Converter with dual isolated output

US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cnSingapore + 65-6484 8412 sales@coilcraft.com.sg

Document 1643-1

Revised 07/11/23© Coilcraft Inc. 2023
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.

Document 1643-2

Isolated Buck Transformer — ZA9668-AE & ZB1175-AE
Typical L vs Current – ZA9668-AE

Dimensions
Dimensions are inHalogenFree

inchesmm

AEC

Q200 +125°C

Typical L vs Current – ZB1175-AE

US +1-847-639-6400 sales@coilcraft.com
UK +44-1236-730595 sales@coilcraft-europe.com
Taiwan +886-2-2264 3646 sales@coilcraft.com.tw
China +86-21-6218 8074 sales@coilcraft.com.cn
Singapore + 65-6484 8412 sales@coilcraft.com.sg

Document 1643-2

Revised 07/11/23© Coilcraft Inc. 2023
This product may not be used in medical or highrisk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.