DISCRETE SEMICONDUCTORS DATA SHEET BZX79 series Voltage regulator diodes NXP Semiconductors Product data sheet Voltage regulator diodes BZX79 series FEATURES
• Total power dissipation: max. 500 mW• Two tolerance series: ±2%, and approx. ±5%• Working voltage range: nom. 2.4 to 75 V (E24 range)• Non-repetitive peak reverse power dissipation:
• Low voltage stabilizers or voltage references. DESCRIPTION
Low-power voltage regulator diodes in hermetically sealed
leaded glass SOD27 (DO-35) packages. The diodes are available in the normalized E24 ±2% (BZX79-B) and
approx. ±5% (BZX79-C) tolerance range. The series
consists of 37 types with nominal working voltages from 2.4 to 75 V. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 60134). PARAMETER CONDITIONS
Device mounted on a printed circuit-board without metallization pad; lead length max.
Tie-point temperature ≤ 50 °C; max. lead length 8 mm. ELECTRICAL CHARACTERISTICS Total BZX79-B and BZX79-C series Tj = 25 °C unless otherwise specified. PARAMETER CONDITIONS PARAMETER CONDITIONS
Per type, BZX79-B/C2V4 to BZX79-B/C24
Tj = 25 °C unless otherwise specified. WORKING VOLTAGE DIFFERENTIAL RESISTANCE TEMP. COEFF. DIODE CAP. NON-REPETITIVE PEAK rdif (Ω) SZ (mV/K) REVERSE CURRENT at IZtest = 5 mA at IZtest = 5 mA at f = 1 MHz; at tp = 100 μs; Tamb = 25 °C Tol. approx. Tol. ±2% (B) Ztest = 1 mA at IZtest = 5 mA
Per type, BZX79-B/C27 to BZX79-B/C75
Tj = 25 °C unless otherwise specified. WORKING VOLTAGE DIFFERENTIAL RESISTANCE TEMP. COEFF. DIODE CAP. NON-REPETITIVE PEAK rdif (Ω) SZ (mV/K) REVERSE CURRENT at IZtest = 2 mA at IZtest = 2 mA at f = 1 MHz; at tp = 100 μs; Tamb = 25 °C Tol. approx. Tol. ±2% (B) Ztest = 0.5 mA at IZtest = 2 mA THERMAL CHARACTERISTICS PARAMETER CONDITIONS
thermal resistance from junction to tie-point lead length 8 mm.
thermal resistance from junction to ambient lead length max.; see and note
Device mounted on a printed circuit-board without metallization pad. GRAPHICAL DATA
Fig.2 Thermal resistance from junction to ambient as a function of pulse duration.
(1) Tj = 25 °C (prior to surge). (2) T
Typical forward current as a function of
reverse power dissipation versus duration. BZX79-B/C2V4 to BZX79-B/C4V3. BZX79-B/C4V7 to BZX79-B/C12.
Temperature coefficient as a function of
Temperature coefficient as a function of
PACKAGE OUTLINE Hermetically sealed glass package; axial leaded; 2 leads DIMENSIONS (mm are the original dimensions)
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