Data Sheet

GAPTEC-Electronic GmbH & Co. KG
[e-mail] – www.gaptec-electronic.com
Page 1 of 4
1T8A_3.5P – Rev. 2017-1.1
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