Osram OTe 25/220-240/700 PC – Dimmable via Leading Edge/Trailing Edge

OTe 25/220-240/700 PC Technical Data

Nominal wattage 25.00 W
Nominal output power 25 W 1)
Nominal voltage 220-240 V
Nominal output voltage 18-36 V 2)
Input voltage AC 198-264 V 3)
U-OUT (working voltage) 50 V
Nominal output current 700 mA 4)
Inrush current 7 A 5)

Output current tolerance ±10 %
Output ripple current (100 Hz) < 35 % 6)
Mains frequency 50/60 Hz
Total harmonic distortion 15 %
Power factor λ 0.95 7)
ECG efficiency 86 % 8)
Device power loss 3.9 W 9)
Max. ECG no. on circuit breaker 10 A (B) 41
Max. ECG no. on circuit breaker 16 A (B) 65
Max. ECG no. on circuit breaker 25 A (B) –

Surge capability (L/N-Ground) 2 kV
Surge capability (L-N) 1 kV
Galvanic isolation SELV
Flickering metric (Pst LM) ≤1

OTe 25/220-240/700 PC Dimensions & Weight

Length 95.00 mm
Width 53.00 mm
Height 30.00 mm
Cable cross-section, input side 0.75…1.5 mm² 1)
Cable cross-section, output side 0.5…1.5 mm² 1)
Wire preparation length, input side 8.0…9.0 mm
Wire preparation length, output side 8.0…9.0 mm
Product weight 93.00 g

Colours & materials

Casing material Plastic
Body material Plastic

Temperatures & operating conditions

Ambient temperature range -20…+50 °C
Maximum temperature at tc test point 75 °C 1)
Max.housing temperature in case of fault 110 °C
Permitted rel. humidity during operation 5…85 % 2)

Capabilities

Dimmable Yes
Dimming interface Phase Cut 1)
Dimming range 10…100 %
Overheating protection Automatic reversible
Overload protection Automatic reversible
No-load proof Yes
Short-circuit protection Automatic reversible
Max. cable length to lamp/LED module 2,0 m
Suitable for fixtures with prot. class I / II
Type of connection, output side Push terminal

Constant current (CC) phase-cut LED drivers provide a fixed current output (e.g., 350mA – 1050mA) directly to series-wired LEDs while enabling dimming via standard TRIAC (leading-edge) or ELV (trailing-edge) wall dimmers. They ensure consistent, flicker-free brightness and protect LEDs by adjusting voltage to maintain stable current, commonly used in downlights and architectural lighting.

Key Features and Benefits

Optimal LED Protection: By regulating current, these drivers prevent LEDs from overdriving, overheating, and premature failure.

Dimming Compatibility: They work with existing, traditional phase-cut dimmer switches, making them ideal for retrofitting, typically providing smooth dimming from 10% to 100%.

Applications: Ideal for constant current LED strips, COB (Chip on Board) modules, and LED downlights.

High Efficiency: They generally offer high power factors (>0.9) and efficiency rates (approx. 75% – 80%).

Protection Features: Usually include short-circuit, overload, and overtemperature protections.

Common Specifications

Output Current: Ranging from 350mA to 1050mA, often with dip-switches for selecting different current levels (350/500/700).

Wattage Range: Generally available from low wattage (e.g., 4W) up to higher power (e.g., 100W for larger arrays).

Dimming Type: Compatible with both leading-edge (TRIAC) and trailing-edge (ELV) dimmers.

Installation Considerations

Series Wiring: Constant current drivers require LEDs to be wired in series.

Matching Specifications: You must ensure the driver’s output current (mA) matches the LED requirements and that the total voltage requirement of the series string falls within the driver’s operating voltage range.

IP Rating: Available in IP20 (indoor) or higher, waterproof IP-rated options for damp/outdoor environments.

OSRAM Licht AG is a German company that makes electric lights, headquartered in Munich and Premstätten (Austria). OSRAM positions itself as a high-tech photonics company that is increasingly focusing on sensor technology, visualization and treatment by light.[3] The company serves customers in the consumer, automotive, healthcare and industrial technology sectors.[4] The operating company of OSRAM is OSRAM GmbH.

Osram was founded in 1919 by the merger of the lighting businesses of Auergesellschaft, Siemens & Halske and Allgemeine Elektrizitäts-Gesellschaft (AEG). Osram was a wholly owned subsidiary of Siemens AG from 1978 to 2013. On 5 July 2013, Osram was spun off from Siemens, and the listing of its stock began on Frankfurt Stock Exchange on 8 July 2013.[5] Osram’s business with conventional light sources was spun off in 2016 under the name Ledvance and sold to a Chinese consortium.[6]

After a bidding war[7] with Bain Capital, Osram was taken over by Austrian company AMS in July 2020.[8][9][10] Since then, the company has operated under the name AMS Osram.[11]

The name is derived from osmium and Wolfram, German for tungsten. Both elements were commonly used for lighting filaments at the time the company was founded.

In 2020 ams AG acquired the German lighting, LED, and opto-semiconductor manufacturer OSRAM. Since then, the company operates under the name ams OSRAM.

The ams OSRAM portfolio includes light emitters, sensors and CMOS ICs with embedded software solutions as well as lighting systems and specialty lamps for automotive, industrial and entertainment applications. The company mainly address the automotive, industrial and medical markets, as well as selected fields of consumer electronics.