AS Series Anti-surge Thick Film Chip Resistors F e at u r e s • Small size and light weight • Suitable for both wave and reflow soldering • Can withstand high surge • Reduction of assembly costs S e r i e s s p e c i f i c at i o n s Type AS08 (0805) AS12 (1206) AS25 (2512) Power Rating at 70°C 0.33W 0.5W 1.5W Max Working Voltage 150V 200V 500V Max Overload Voltage 300V 400V 500V Dielectric Withstanding Voltage 500V 500V 500V Resistance Range 1Ω~10MΩ 1Ω~10MΩ 1Ω~20MΩ Characteristics Std. Oper. Temp. -55°C ~ +155°C Standard Values E-24 values Construction Thick film Tolerance ±5% standard; ±10% and ±20% available Test ΔR Temperature 1Ω-10Ω: ≤ ±400PPM/°C Coefficient (±200 PPM can be provided on a case to case basis) 11Ω-10MΩ: ≤ ±100PPM/°C Derating Short Time ±(1.0% + 0.1Ω) max. Overload Percent Rated Power 100 80 Terminal ±(1.0% + 0.05Ω) max. Bending 60 40 Soldering Heat ±(1.0% + 0.05Ω) max. 20 0 -55 Single Pulse ±(1.0% + 0.1Ω) max. 0 50 70 100 Ambient Temperature, °C 155 Load Life in ±(3.0% + 0.1Ω) max. Humidity Reflow 300 Temperature °C 250 200 Preheating 230° ~ 245°/250° 20 ±10sec. Soldering 150° ~ 180° 90 ±30sec. Cooling 150 100 Humidity ±(3.0% + 0.1Ω) max. Load Life ±(3.0% + 0.1Ω) max. 6 Time Natural ΔR/°C R2-R1 x 106 (PPM/°C) R1(t2-t1) R1: at room temp. (T1) R2: at room temp. plus 100°C (T2) Test pattern: room temp. (T1), room temp. +100°C(T2) Permanent ΔR after the application of a potential of 2.5 times RCWV for 5 sec. Twist of Test Board: Y/X = 3/90 mm for 60 sec. 260°C±3°C for 10 ±1 sec. See graph on next page. Temporary ΔR after 240 hr. at 40 ±2°C and 90-95% relative humidity ΔR after 1,000 hr. (1.5 hr. "on", 0.5 hr. "off" ) at RCWV at 40 ±2°C and 90-95% relative humidity ΔR change after 1,000 hr. operating at RCWV, with duty cycle of (1.5 hours"on", 0.5 hour"off") at 70°C ±2°C ambient Solderability Min. 95% coverage Wave Solder: 245°C ±3°C for 2-3 sec. Temperature ±(1.0% + 0.05Ω) max. Cycling ΔR after 5 cycles: -55°C ±3°C 30 min. Room temp. 10-15 min. +155°C ±2°C 30 min. 4 Room temp. 10-15 min. 50 0 Test Methods (JIS C 5201-1 ) Clamped in the trough of a 90°C metalDielectric No evidence of flashover, withstanding mechanical damage, arcing lic v-block at specified AC potential 60-70 sec. voltage or insulation breakdown 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] AS Series Anti-surge Thick Film Chip Resistors Characteristics Pulse Curve Lightning Surge 10,000 AS25 AS12 AS08 Voltage (V) Single AS25 AS12 AS08 1,000 100 10 1.2/50µs Lightning Surge 1 10 100 Continuous (100KΩ) 1K 10K Resistance (Ω) 100K 1M AS25 AS12 AS08 Dimensions (mm) Series L W H a 2.00 ±0.15 1.25 +0.15/-0.10 0.55 ±0.10 0.40 ±0.20 0.40 ±0.20 AS25 6.35 ±0.10 AS12 a b AS08 a 3.10 ±0.15 1.55 +0.15/-0.10 0.55 ±0.10 0.45 ±0.20 0.45 ±0.20 3.10 ±0.15 0.55 ±0.10 0.60 ±0.25 0.50 ±0.20 b Tape and Reel 2 ±.5 T ±.1 Paper 13 ±.5 1.75 ±.1 b 1.5 +0.1/-0 4.0 ±.1 2.0 ±.05 8.0 ±.2 178 ±2 B ±.2 60 ±1 3.5 ±0.05 A ±.2 21 ±.5 Series AS08 AS12 AS25 Packaging Paper Paper Embossed Qty./reel 5,000 pcs. 5,000 pcs. 4,000 pcs. A 1.65 2.00 3.50 W ±1 B 2.40 3.60 6.70 T W 0.81 0.81 1.0 Embossed 1.0 ±.1 1.75 ±.1 1.5 +0.1/-0 8.0 ±.2 13.8 B ±.2 3.5 ±0.05 OR D ERIN G IN F ORM A TION RoHS compliant AS08J1004ET Tolerance J = 5% standard for E24 values Ohms First 3 digits are significant; 4th digit is multiplier. Values below 100 ohms use "R" as a decimal holder. examples: 1001 = 1000 ohms 1502 = 15000 ohms 2.0 ±.05 10 10 1.5 +0.1/-0 Series AS08= 0805 AS12= 1206 AS25= 2512 4.0 ±.1 TCR T= tape and reel: 0805 and 1206 paper tape; 2512 embossed tape. Standard Part Numbers 0805 1206 2512 AS08J1R00ET AS08J10R0ET AS08J1000ET AS08J1001ET AS08J1002ET AS08J1003ET AS08J1004ET AS12J1R00ET AS12J10R0ET AS12J1000ET AS12J1001ET AS12J1002ET AS12J1003ET AS12J1004ET AS25J1R00ET AS25J10R0ET AS25J12R0ET AS25J15R0ET AS25J22R0ET AS25J1000ET AS25J1001ET AS25J1002ET AS25J1003ET AS25J1004ET 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • [email protected] 7 A ±.2