LDP24

® LDP24A TRANSIENT PROTECTION LOAD DUMP FEATURES n n TRANSIENT VOLTAGE SUPPRESSOR DIODE ESPECIALLY DESIGNED FOR LOAD DUMP PROTECTION COMPLIANT WITH MAIN STANDARDS SUCH AS: ISO / DTR 7637 DESCRIPTION Transient voltage suppressor diodes especially useful in protecting integrated circuits, MOS, hybrids and other overvoltages sensitive semiconductors and components. AG (Plastic) ABSOLUTE RATINGS (limiting values) Symbol VPP P IFSM Tstg Tj TL Parameter Peak pulse load dump overvoltage See note 1 Power dissipation on infinite heatsink Non repetitive surge peak forward current. Storage temperature range. Maximum operating temperature Maximum lead temperature for soldering during 10 sec at 4 mm from case. Tamb = 85°C Tamb = 100°C Tj initial = 25°C tp = 10 ms Value 100 5 500 - 65 to + 175 175 230 Unit V W A °C °C °C THERMAL RESISTANCES Symbol Rth (j-a) Parameter Junction ambient thermal resistance on infinite heatsink Llead = 10 mm Value 15 Unit °C/W Note 1: For surges greater than the maximum values, the diode will present a short-circuit Anode - Cathode. April 2000 - Ed: 4B 1/5 LDP24A ELECTRICAL CHARACTERISTICS Symbol VRM VBR VCL IPP Parameter Stand-off voltage. Breakdown voltage. Clamping voltage. Peak pulse current. Temperature coefficient of VBR. Capacitance Leakage current at VRM Peak forward voltage drop (IFM = 10A) VF = 0.9 Volt Typ. I IF VCL VBR V RM VF I RM V αT C IRM VF I PP Symbol Ipp IRM VBR VCL αT C F = 1MHz Pulse duration: 300ms TL = 25°C TL = 85°C TL = 25°C TL = 85°C Test Conditions Min. Typ. Max. 30 50 300 Unit A µA µA V V 10 /°C pF -4 VRM = 24 V VRM = 24 V IR = 1mA see table1 25 32 40 10 VR = 0V 8000 LOAD DUMP TEST GENERATOR CIRCUIT (SCHAFFNER NSG 506 C). Issued from ISO / DTR 7637. Table 1 Open circuit (voltage curve) (Pulse test n°5) Impulse Vs (V) Vbat (V) Ri (Ω) t (ms) tr (ms) Number 60s between each pulse N°5 86.5 13.5 2 200 (*)