This part is a kind of semiconductor called WMZ11A-105A101NU.

Function of this product has PTC thermistor.

Manufacturers : Sinochip

Image and pinout :

Some of the text within the PDF file :

Sinochip Electronics Co.,LTD Characteristics 1. WMZ11A series PTC thermistor is pins resin coated parts. 2. High voltage withstanding capacity：420VAC-1000VAC 3. Small dimension 4. Applied for frequently switching 5. Delayed time stability. 6. Complete parts. 7. Switch life can be 100 000 cycles. Application 1. Energy saving light. 2. Electronic ballast Dimension（Unit：mm） Part Number Explanation WMZ 1 1A - 75 PTC thermistor For Starting function Lighting/Ballast Switch temperature：75-75℃ 85-85℃ Chip dimension：S-3mm A-5mm B-8mm LB-9mm S 561R N U S：Straight U: In-formed Resistance tolerance：H-±25% M-±20% N-±30% R25 resistance： 70R-70Ω 225R-225Ω 471-470Ω Sinochip Electronics Co.,LTD http://www.sinochip.net Sinochip Electronics Co.,LTD Code S L A HV B B [ ... ]

WMZ11A-105A101NU PDF Datasheet Download