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 a b AS08 2.00 ±0.15 125 +0.15/-0.10 0.55 ±0.10 0.40 ±0.20 0.40 ±0.20 a AS12 3.10 ±0.15 155 +0.15/-0.10 0.55 ±0.10 0.45 ±0.20 0.45 ±0.20 AS25 6.35 ±0.10 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 Qty./reel Paper Paper 5,000 pcs. Embossed 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 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