GAPTEC-Electronic GmbH & Co. KG

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1T8A_3.5P – Rev. 2014-1.0

Specifications subject to change without notice.

1T8A_3.5P Series

1W- Single Output DC-DC Converter - Fixed Input - Isolated & Unregulated

Miniature SMD package

3500VDC isolation

Operating temperature range:

-50°C℃~ +125°C

Components meet AEC-Q100

standards

Internal SMD construction

The production process meet

TS16949 system requirements

Industry standard pinout

Short circuit protection (SCP)

DC-DC Converter

1 Watt

The 1T8A_3.5P Series is specially designed for applications where isolated output

is required from a distributed power system. It can be used in automobile motor

control and drive systems.

These products apply to:

1) Where the voltage of the input power supply is fixed (voltage variation ≤ ±10%)

2) Where isolation is necessary between input and output

(isolation voltage ≤3500VDC)

3) Where the regulation of the output voltage and the output ripple noise are not

demanding

Such as: motor vehicle communication system controller, engine control systems,

the ignition system, the motor voltage monitoring, the electronic accelerator pedal,

automobile tire pressure detection system, doors and tail lights controller, air con-

ditioning control and battery management system (BMS), etc.

Common specifications

Short circuit protection*:

Continuous, automatic recovery

Temperature rise at full load:

25°C MAX (Ta= 25°C, 100% load)

Cooling:

Free air convection

Operation temperature range:

-50°C~+125°C

Storage temperature range:

-55°C ~+135°C

Lead temperature

300°C MAX, 1.5mm from case for 10 sec

Storage humidity range:

< 95%

Package material:

Epoxy Resin [UL94-V0]

MTBF (MIL-HDBK-217F@25°C):

>3,500,000 hours

Weight:

1.5g

*Supply voltage must be discontinued at the end of short circuit duration.

Isolation specifications

Item

Test condition

Min

Typ

Max

Units

Isolation voltage

Tested for 1 minute,

leakage current less

than 1 mA

3500

VDC

Isolation resistance

Test at 500VDC

1000

MΩ

Isolation

capacitance

Input/Output

100KHz/0.1V

20

pF

Input specifications

Item

Test condition

Min

Typ

Max

Units

Input surge voltage

(1 sec. max.)

5VDC input

-0.7

9

VDC

Input filter

Capacitor

Note:

1. Operation under minimum load will not damage the converter; However, they

may not meet all specifications.

2. Max. Capacitive Load is tested at nominal input voltage and full load.

3. Unless otherwise noted, All specifications are measured at Ta=25°C,

humidity<75%, nominal input voltage and rated output load.

4. In this datasheet, all test methods are based on our corporate standards.

5. All characteristics are for listed models, and non-standard models may perform

differently. Please contact our technical support for more detail.

6. Please contact our technical support for any specific requirement.

7. Specifications of this product are subject to changes without prior notice.

Model selection:

WCTP**_xxyyN##O

W= Watt; C= Case; T= Type; P= Pinning; **= Voltage Variation

(omitted ± 10%);

xx= Vin; yy= Vout; N= Numbers of Output;

##= Isolation (kVDC); O= output regulation

Example:

1T8A_0505S3.5UP

1= 1Watt; T8= SMT8; A=Pinning; 5Vin; 5Vout; S=Single output;

3.5= 3.5kVDC; U= Unregulated output; P= Short circuit protection

Output specifications

Item

Test condition

Min

Typ

Max

Units

Output power

0.1

1

W

Line regulation

For Vin change of 1%

±1.2

%

Load regulation

10% to 100% load

12

%

Output voltage

accuracy

See tolerance envelope graph

Temperature drift

100% full load

±0.03

%/°C

Ripple & Noise*

20MHz Bandwidth

60

mVp-p

Switching frequency

Full load, nominal input

100

300

KHz

*Test ripple and noise by “parallel cable” method. See detailed operation instruc-

tions at DC-DC application notes.

EMC specifications

EMI

CE

CISPR25/EN55025

CLASS 1

(External Circuit Refer to

EMC recommended circuit)

ESD

ESD

ISO10605

Contact ±6KV

perf. Criteria B