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PTC Thermistors

PTC Thermistor MZ11 Series: Advanced Solutions for light efficient design

Brief Introduction: Introducing the MZ11 series PTC Thermistors, expertly engineered for efficient time-delayed startup in lighting systems and ballasts. These versatile PTC resistors are perfect fo……

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Functional characteristics

Brief Introduction:
Introducing the MZ11 series PTC Thermistors, expertly engineered for efficient time-delayed startup in lighting systems and ballasts. These versatile PTC resistors are perfect for a variety of applications, including fluorescent lamps, electronic ballasts, and energy-saving lamps. They effectively transition from a traditional hard start to a pre-heated, more efficient start, significantly enhancing system performance. With preheating times ranging from 0.4 to 2.0 seconds, the PTC thermistors can extend the lifespan of fluorescent tubes by more than four times.

Product Applications:
The MZ11 series thermistor PTC is optimally used for light efficient design such as :
1. Fluorescent lamps
2. Electronic ballasts
3.Electronic energy-saving lamps
Example of thermistor application
PTC Thermistor Application Example

Working Principle:
Upon activation of the high-frequency shaking circuit loop, the PTC thermistor starts at a normal temperature where its resistance is significantly lower than that of component C2. This facilitates minimal initial light pressure, allowing the current through C1 and Rt to establish a preheating circuit for the filament. As the PTC resistor heats up beyond the Curie temperature, Rt’s temperature surpasses the critical switch temperature (TSW). Within 0.4 to 2 seconds, Rt shifts to a high-resistance state, greatly exceeding C2’s resistance. This change enables the current through C1 and C2 to create LC resonance, thus generating the high voltage necessary for lighting the fluorescent tube.

Selection Guide:
For optimal performance in electronic ballasts and energy-saving lighting, it is advisable to select a PTC resistor with:
– Lower resistance
– Higher Curie temperature (Tc point)
– Larger ceramic body dimensions

These features ensure lower power consumption and shorter preheating times, while a higher resistance and smaller dimensions generally lead to increased power consumption and longer preheating durations.

Advantages:
1. Suitable for frequent switching, with a typical switching life exceeding 100,000 cycles.
2. Demonstrates high reliability and exceptional safety and stability.
3. Operates effectively across a wide temperature range:
– -25 to +125 Celsius degrees (at 0V)
– 0 to +60 Celsius degrees (at maximum voltage)
4. Capable of withstanding voltages between 420 to 1000 VAC.
5. Maintains stable resistance at normal temperatures.
6. Compact size for seamless integration.
7. Available in a variety of specifications to meet diverse needs.
8. Provides consistent delayed times.
9. Fully compliant with RoHS standards.

Dimension(Unit: mm):
PTC resistor Dimensions for delayed start in lighting devices, showing various pin formations and dimensions in millimeters

Marking of Part Number:
Figure 3- Lamp delay start thermistor PTC model:
Model number breakdown for MZ11 PTC thermistor used in delayed start of lamps, with sections labeled 1 to 7 detailing components
1.Series:PTC thermistor for electronic ballast or energy-saving lamp starter
2.Chip size: 05-5mm
3.Curie temperature: H-75℃ N-100℃ P-120℃ K-125℃
4.R25 resistance:501-500Ω 222-2200Ω 332-3300Ω
5.Resistance tolerance：K+/-10% M+/-20% H+/-25% N+/-30%
6.Max Voltage: 700-700V
7.Wire shape: S-Straight A-Axis formed U-In-formed

Specification&part no.:

Item	Part No.	Curie temperature T c (℃)	Resistance R 25（Ω） ±30%	Max voltage Vacmax (V)	Max. current Iacmax ( mA )	Dimension （mm）
Item	Part No.	Curie temperature T c (℃)	Resistance R 25（Ω） ±30%	Max voltage Vacmax (V)	Max. current Iacmax ( mA )	Dmax	Tmax	Φd
1	MZ11-03H332N800	75(H)	3300	800	100	4.5	5.0	0.5
2	MZ11-03H222N800		2200	800	100
3	MZ11-03H152N800		1500	800	100
4	MZ11-03H102N800		1000	800	100
5	MZ11-03H681N800		680	800	200
6	MZ11-03H391N650		390	650	200
7	MZ11-03H271N650		270	650	200
8	MZ11-03H151N500		150	500	200
9	MZ11-04H332N900	75(H)	3300	900	100	5.5	5.0	0.6
10	MZ11-04H222N900		2200	900	100
11	MZ11-04H152N900		1500	900	100
12	MZ11-04H102N900		1000	900	100
13	MZ11-04H681N900		680	900	200
14	MZ11-04H391N800		390	800	300
15	MZ11-04H271N800		270	800	300
16	MZ11-04H151N500		150	500	300
17	MZ11-04H101N500		100	500	300
18	MZ11-05H332N1000	75(H)	3300	1000	200	6.5	5.0	0.6
19	MZ11-05H222N900		2200	900	100
20	MZ11-05H152N900		1500	900	100
21	MZ11-05H102N900		1000	900	100
22	MZ11-05H681N900		680	900	300
23	MZ11-05H391N900		390	900	400
24	MZ11-05H271N800		270	800	400
25	MZ11-05H151N650		150	650	400
26	MZ11-05H101N650		100	650	400
27	MZ11-07H102N900	75(H)	1000	900	100	8.0	5.0	0.6
28	MZ11-07H681N900		680	900	200
29	MZ11-07H561N900		560	900	300
30	MZ11-07H391N900		390	900	400
31	MZ11-07H271N900		270	900	600
32	MZ11-07H221N800		220	800	600
33	MZ11-07H151N800		150	800	600
34	MZ11-07H101N650		100	650	600
35	MZ11-07H70RN650		70	650	600
36	MZ11-03N102N800	100(N)	1000	800	100	4.5	5.0	0.5
37	MZ11-03N152N800		1500	800	100
38	MZ11-03N681N650		680	650	200
39	MZ11-03N391N650		390	650	200
40	MZ11-03N561N650		560	650	200
41	MZ11-03N225RN500		225	500	200
42	MZ11-03N151N420		150	420	200
43	MZ11-04N851N800	100(N)	850	800	100	5.5	5.0	0.6
44	MZ11-04N601N800		600	800	200
45	MZ11-04N391N650		390	650	300
46	MZ11-04N301N650		300	650	300
47	MZ11-04N225RN500		225	500	300
48	MZ11-04N175RN500		175	500	300
49	MZ11-04N151N500		150	500	300
50	MZ11-04N101N420		100	420	300
51	MZ11-05N102N900	100(N)	1000	900	100	6.5	5.0	0.6
52	MZ11-05N851N900		850	900	100
53	MZ11-05N681N900		680	900	200
54	MZ11-05N561N800		560	800	300
55	MZ11-05N391N800		390	800	400
56	MZ11-05N301N650		300	650	400
57	MZ11-05N221N650		220	650	400
58	MZ11-05N151N650		150	650	400
59	MZ11-05N101N500		100	500	400
60	MZ11-07N561N900	100(N)	560±30%	900	300	8.0	5.0	0.6
61	MZ11-07N391N900		390±30%	900	400
62	MZ11-07N331N800		330±30%	800	400
63	MZ11-07N271N800		270±30%	800	600
64	MZ11-07N221N800		220±30%	800	600
65	MZ11-07N151N800		150±30%	800	600
66	MZ11-07N101N650		100±30%	650	600
67	MZ11-07N70RN650		70±30%	650	600
68	MZ11-03P102N650	120(P)	1000	650	100	4.5	5.0	0.5
69	MZ11-03P681N650		680	650	200
70	MZ11-03P561N650		560	650	200
71	MZ11-03P391N650		390	650	200
72	MZ11-03P331N650		330	650	200
73	MZ11-03P271N500		270	500	200
74	MZ11-03P175RN420		175	420	200
75	MZ11-03P151N420		150	420	200
76	MZ11-05P102N800	120(P)	1000	800	100	6.5	5.0	0.6
77	MZ11-05P681N800		680	800	200
78	MZ11-05P561N800		560	800	300
79	MZ11-05P391N650		390	650	400
80	MZ11-05P301N650		300	650	400
81	MZ11-05P221N650		220	650	400
82	MZ11-05P175RN650		175	650	400
83	MZ11-05P151N500		150	500	400
84	MZ11-05P101N500		100	500	400

Note：
1. R 25 resistance tolerance can be selected per customer’s requirement.
2. Encapsulation mode can be made per customer’s requirement.
3. Wire shape kinked form can be selected.

Elevate your lighting and ballast systems with the MZ11 series PTC thermistors, designed for superior efficiency and extended durability. Adopt this advanced technology today to enhance your lighting solutions!