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PTC Thermistor

PTC Thermistor

Our WMZ11B PTC thermistor is a preheat start element featuring zero power consumption and zero temperature rising, which is particularly designed for high performance electronic ballasts and energy saving lamps. It is an upgrade product of WMZ11A PTC thermistor.

Actually, the WMZ11B PTC thermistor is a composite element of PTC thermistor. In following text, we will introduce you its unique feature in details.

When electricity passes through the circuit, the voltage is higher than varistor voltage. This enables varistor voltage to be in the conducting state. So the whole preheat-starting process is independently finished by WMZ11B PTC thermistor.

When the lamp is on, the voltage is lower than varistor voltage. This makes varistor voltage disconnected from electricity. Thus, our WMZ11B PTC thermistor realizes zero power consumption and zero temperature rising.

The WMZ11B PTC thermistor and WMZ11A PTC thermistor has much similarity. However, it should be stressed that the varistor voltage of WMZ11B PTC thermistor is a little bit higher than lamp voltage.

Product Diagram

Numbering System

Technical Parameters
1. Temperature of switch: 50-50℃, 75-75℃, 85-85℃, 105-105℃, 120-120℃
2. Type: HV-High voltage type (Φ6.0×5.0)
A-Basic type (Φ5.5×4.5)
B-Strengthen (Φ8.0×4.5)
S-Small type (Φ4.5×4.5)
BHV-Super strong type (Φ8.0×5.0)
3. Rated zero power resistance: 102-1000Ω, 68R-68Ω
4. Tol. of resistance: N-±25%, V-±25%, M-±20%, K-±10%, X-±20%
5. Shape of lead: U-In-formed, S-Straight, A-Axis wind

Numbering System

1. Series
2. Spec. of PTC Thermistor (Same as WMZ11A series)
3. Size of Varistor: 5D-Φ5, 7D-Φ7, 10D-Φ10
4. Vol and Tol. of Varstor: 820-82V, 101-100V, 121-120V, 151-150V, K-±10%, J-±5%

Numbering System

1. Temperature of switch: 50-50℃ 75-75℃ 85-85℃ 105-105℃ 120-120℃
2. Type: HV-High voltage type (Φ6.0×5.0)
A-Basic type (Φ5.5×4.5)
B-Strengthen type (Φ8.0×4.5)
S-Small type (Φ4.5×4.5)
BHV-Super strong type (Φ8.0×5.0)
3. Rated zero power resistance: 102-1000Ω, 68R-68Ω
4. Tol. of resistance: N-±30%, V-±25%, M-±20%, K-±10%, X-else
5. Shape of lead: U-In-formed, S-Straight, A-Axis wind

Ke Min Company is a leading WMZ11B PTC thermistor manufacturer located in China. In addition to thermistor, we also produce ceramic capacitor, LED lighting, resettable fuse, and more.

If you need our products, please feel free to contact us. We are confident that you will be satisfied with our quality product and service.

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