# Non Isolated POL DC/DC Converter, ITE, DIP, 1 Output, 1.65 W, 3.3 V, 500 mA
**URL**: https://novapart.co/products/B78E03-0R5-R3/non-isolated-pol-dc-converter-ite-dip-1-output-165
**SKU**: B78E03-0R5-R3
**Manufacturer**: PULSE ELECTRONICS
**Category**: Power & Line Protection || Power Supplies || DC / DC Converters || DC / DC Non Isolated Board Mount Converters - Fixed Output
**Price**: €2.8200
**Stock**: 50+
**Lead Time**: 80 days (indicative)
## Specifications
| Parameter | Value |
|---|---|
| Svhc | No SVHC (04-Feb-2026) |
| Depth | 11.6mm |
| Width | 7.5mm |
| Height | 10.2mm |
| Product Range | B78E Series |
| No. Of Outputs | 1 Output |
| Output Power Max | 1.65W |
| Output Current Max | 500mA |
| Output Voltage Nom | 3.3V |
| Input Voltage Dc Max | 30V |
| Input Voltage Dc Min | 6V |
| Dc / Dc Converter Type | DIP |
| Power Supply Applications | ITE |
| Dc / Dc Converter Mounting | Through Hole |
| Dc / Dc Converter Output Type | Fixed |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:4830051/)
B78EXX-0R5-R3 Series Non-isolated DC-DC Converters
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## **Description**
The B78EXX-0R5-R3 Series are non-isolated DC/DC converters suited to replace 0.5 Amp LM78xx linear regulators. Designed with highly efficiency, allow the operating temperature range of these units to be -40°C to +85°C in a 11.6×7.5×10.2mm non-conducted black plastic case. Further features include wide 6 - 36VDC input voltage range, short-circuits protection and over temperature protection.
## **Features**
- ⚫ 6 - 36VDC wide input range
- ⚫ Pinout compatible with LM78xx linear regulators
- ⚫ High Efficiency up to 97%
- ⚫ Output Short Circuit Protection: Hiccup and Auto Recovery
- ⚫ Over Temperature Protection
- ⚫ Lead Free Design, RoHS Compliant
- ⚫ Designed according to IEC/EN/UL 62368-1
Electrical Specification @ 25[o] C
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|||||||||
|---|---|---|---|---|---|---|---|
|Output|Output|Current|(mA)|[(1)]|Efficiency (%)|[(2)]|Capacitive|
|Model Number|Input Voltage Range|Load(uF)|
|Voltage(V)|
|Min. Load|Full Load|Vin_Min.|Vin_Max.|Max.|
|B78E03-0R5-R3|6-36V, nominal 24V|3.3|0|500|90|80|680|
|rs|
|B78E05-0R5-R3|6.5-36V, nominal 24V|5|0|500|94|84|680|
|es|
|B78E6R5-0R5-R3|9-36V, nominal 24V|6.5|0|500|94|84|470|
|es|
|B78E09-0R5-R3|12-36V, nominal 24V|9|0|500|96|90|470|
|Rees|
|B78E12-0R5-R3|15-36V, nominal 24V|12|0|500|97|92|100|
|se|GG|
|B78E15-0R5-R3|18-36V, nominal 24V|15|0|500|97|94|100|
|eG|
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Input Specifications Input voltage Input filter
See table Capacitor type
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Non-isolated DC-DC Converters
## B78EXX-0R5-R3 Series
|Environmental Specifications|||
|---|---|---|
|Operating ambient temperature||-40°C to +85°C (with derating)|
|Maximum case temperature||+105°C|
|Storage temperature range||-50°C to +125°C|
|Relative humidity||95% RH max.|
|Temperature coefficient||±0.03% / °C max.|
|Output Specifications|||
|Output current||500mA max.|
|Voltage accuracy|0 -100% load and 24Vin|±1% typ.
±3% max.|
|Minimum load||Not required|
|Line regulation|Full load|±0.75% max.|
|Load Regulation|10 - 100% load and 24Vin|±1% max.|
|Ripple and Noise (20MHz Bandwidth)||150mVp-p max.|
|Capacitive load||See table|
|Short Circuit Protection||Hiccup, automatic recovery|
|Over Temperature Protection|The IC Thermal Shutdown Temperature|150°C typ.|
|General Specifications|||
|Efficiency||See table|
|Switching frequency (Fixed)|Pulse width modulation (PWM)|410kHz|
|Reliability, calculated MTBF||10 × 105hrs|
|Physical Specifications|||
|Case material||Plastic (UL94 V-0)|
|||0.46 × 0.295 × 0.4 Inch|
|Dimensions|||
|||(11.6 × 7.5 × 10.2 mm)|
|Weight||1.6g (0.057oz) typ.|
## Note:
1. Io below this value will not damage these converters, however, they may not meet all listed specifications.
2. Typical value, tested at nominal input and full load.
3. Specifications subject to change without notice.
4. This power module is not internally fused. The input line fuse must always be used.
5. When the input voltage is higher than 30V or in case of long input lines or hot plug-in requirements, 33uF high frequency and low resistance electrolytic capacitor must be attached to the input during test or operation.
6. In the process of testing or using, it is necessary to ensure that the "GND" pin of the product is well connected to the GND of the power supply, otherwise the product will be damaged.
7. DO NOT use it in overload condition.
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Non-isolated DC-DC Converters
## B78EXX-0R5-R3 Series
## **Power Derating Curve**
## **Process and Materials**
1. Storage Temperature: Refer to the specification for details
2. Compliance to J-STD:
- A. J-STD-002: Solderability of Dipping at 255~260°C
- B. J-STD-020: Moisture Sensitive Level 1
3. All parts are packaged in tubes - see page 7 for details
4. For all electrical characteristics, curves and applications, please refer to the detailed spec.
5. Lead Frame: Cooper Alloy Underplated: Half Hard Ductile Nickel 40-118" (1.0 - 3.0um)
Over plated: 100% Tin electro-deposited per 240~400u" (6~10um) min
Finish: Matte finish 100% Tin solder
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B78EXX-0R5-R3 Series
Non-isolated DC-DC Converters
## **Mechanical**
## **B78EXX-0R5-R3**
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Pinout
Pin Function
1 Vin
2 GND
3 Vout
All dimensions in mm
Tolerances: ±0.5
Pin dimension tolerances: ±0.10
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## **Test Configurations**
All specifications are typical at nominal input, full load and 25°C unless otherwise stated.
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A A
DC DC/DC
V V Load
Power Supply converter
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- DC Power Supply: It offers a wide voltage and current range precisely.
- Current meter (A): Accuracy➔ 200μA ~ 200mA 4 ranges ± (0.2% rdg + 2 digits)
2000mA ~ 20A 2 ranges ± (0.3% rdg + 2 digits).
- Voltage meter (V): Accuracy➔ ± (0.03% rdg + 4 digits).
◎ Load: At full load.
- Wires: The resistance of the wires must be small.
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Non-isolated DC-DC Converters
## B78EXX-0R5-R3 Series
## 1. Ripple and Noise: as shown below. The bandwidth is 0-20MHz.
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Noise 32.0m¥ Ripple&Noise
CHe Off. v
| © Fise Time
, ; CHI 4
oy ' } PP
Ripple
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Output Ripple&Noise measurement test circuit: as shown below.
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Copper strip
DC/DC
Co Oscilloscope Load
converter
Copper strip
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- Co: usually 1uF MLCC and 10uF tantalum capacitor.
2. Temperature derating curve: The DC-DC converter will operate over a wider temperature range if less power is drawn from the output and the device is already running. The temperature derating curve shows the operating power-temperature range. As shown below.
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B78EXX-0R5-R3 Series Non-isolated DC-DC Converters
## 3. Application circuit: as shown below. C1=10uF/50V MLCC, C2 =22uF/25V MLCC.
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DC-DC
+Vin +Vout
1 converter 3
2
C1 C2 Load
GND
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4. EMC Filter Suggestion according to EN55032 CLASS B:
|MOV|L1|C0|C01|L2|C1|C2|
|---|---|---|---|---|---|---|
|20D470K|300uH|470uF/50V|4.7uF/50V
MLCC|5mH|10uF/50V
MLCC|22uF/25V
MLCC|
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## B78EXX-0R5-R3 Series
Non-isolated DC-DC Converters
## **Wave Soldering Temperature Curve**
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° C
300
255°C-265°C
3.0~5.0sec
270
240
210
180
150
120 100-110°C
90 90°C
5°CMAX
60
30-50sec
30
60-90sec preheat area
0
20 40 60 80 100 120 140 160 180 200 sec
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## **Carton Package**
## **B78EXX-0R5-R3**
## For More Information:
Americas-prodinfonetworkamericas@pulseelectronics.com | Europe-comms-Apps-Europe@pulseelectronics.com |Asia-prodinfonetworkapac@pulseelectronics.com
Performance warranty of products offered on this datasheet is limited to the parameters specified. Data is subject to change without notice. Other brand and product names mentioned herein maybe trademarks or registered trademarks of their respective owners. © Copyright, 2021. PulseElectronics, Inc. All rights reserved.
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## Links
- [View this product on Novapart](https://novapart.co/products/B78E03-0R5-R3/non-isolated-pol-dc-converter-ite-dip-1-output-165)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/pulse-electronics/b78e03-0r5/dc-dc-converter-3-3v-0-5a-24w/dp/4830051)
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