Datasheet CRD (Semitec)

■ Current regulating diode
Current regulating diodes (CRD hereunder) are diodes that maintain a constant current flow despite voltage fluctuations. CRDs supply constant
CRD
current over a wide range of voltage from less than 1V to 100V. Constant current is supplied regardless of fluctuations in voltage applied, load resistance changes and ripple voltage. Creating a constant current circuit generally involves multiple components, but with SEMITEC CRDs only one part is required to accomplish the same function.
■ Product number explanation ■ Dimensions □ 102 S series E series
Packing method No marking: Untaped bulk products 26Z: 26 mm width; axial taping; Z folding Plated electrode 26R: 26 mm width; axial taping; reel Anode 0.45 1.6 52Z: 52 mm width; axial taping; Z folding T: S series only; SMD reel taping Product number Lot number Pinch-off current 3.5 2.6 E.g.: 301: 30 x 101 µA = 0.3 mA 0.13 0.9 102: 10 x 102 µA = 1.0 mA Cathode mark Cathode Plated 452: 45 x 102 µA = 4.5 mA electrode 0.7 Marking E: Leaded type S: SMD type Cathode ring
■ Applications
Unit: mm - Constant current source for LED brightness stabilization - Constant current test equipment for various semiconductor devices - LED street lights, LED fluorescent lamps, LED light bulbs, LED downlights - Telecommunications line interface - Constant voltage circuit for supplying constant current to Zener diodes - Earth leakage circuit breakers - Constant current source for proximity sensors and other sensors - Current source for piezoelectric actuators - Battery charge / discharge circuits - Stabilized power supply circuits - Electrolytic capacitor aging equipment
■ Specifications General
Product number Pinch-off current (10 V)1 Limiting current1 Limiting current ratio Temperature E series S series I100V/Ip*I30V/ coefficient (% / ℃)2 SMD Leaded Ip (mA) typical Min - max Vk (V) Ik (mA) Rated power 300 mW 500 mW Ip S-101T E-101 0.10 0.05 - 0.21 0.5 + 2.10 to + 0.10 Rated voltage 100 V (E-101 to E-562) 100 V (S-101 to S-562) (pulse wave) 50 V (E-822 to E183) 50 V (S-822 to S-223) S-301T E-301 0.30 0.20 - 0.4 0.8 + 0.40 to - 0.20 S-501T E-501 0.50 0.40 - 0.6 1.1 + 0.15 to - 0.25 Allowable reverse current 50 mA S-701T E-701 0.70 0.60 - 0.9 1.4 　0.00 to - 0.32 Junction temperature 150 ℃ S-102T E-102 1.00 0.88 - 1.3 1.7 - 0.10 to - 0.37 Operating S-152T E-152 1.50 1.28 - 1.7 2.0 1.1 max - 0.13 to - 0.40 temperature range - 30 to 150 ℃ - 40 to 150 ℃ S-202T E-202 2.00 1.68 - 2.3 2.3 - 0.15 to - 0.42 S-272T E-272 2.70 2.28 - 3.1 2.7 - 0.18 to - 0.45
Recommended maximum voltage
S-352T E-352 3.50 3.00 - 4.1 3.2 0.8 lpmin. - 0.20 to - 0.47 S-452T E-452 4.50 3.90 - 5.1 3.7 - 0.22 to - 0.50 Product number Voltage Product number Voltage S-562T E-562 5.60 5.00 - 6.5 4.5 - 0.25 to - 0.53 E-101 to E-562 100 S-101 to S-562 100 S-822T E-822 8.20 6.56 - 9.8 3.1 - 0.25 to - 0.45 E-822 S-103T E-103 10.0 8.00 - 12.4 3.5 - 0.25 to - 0.45 E-103 30 S-123T E-123 12.0 9.60 - 14.4 3.8 1.0 max - 0.25 to - 0.45 E-123 S-822T to S-223T 50 S-153T E-153 15.0 12.0 - 18.0 4.3 (I30/Ip) - 0.25 to - 0.45 E-153 S-183T E-183 18.0 16.0 - 20.0 4.6 - 0.25 to - 0.45 25 E-183 S-223T 22.5 20.0 - 25.0 5.3 - 0.25 to - 0.45
New
1: Pinch-off current and limiting current are measured by pulse wave at 25 ℃ environment temperature 2: Temperature coefficient is calculated from measurements at 25 and 50 ℃. Taping options Voltage - current characteristics SEMITEC offers both axial and SMD taping. Current (mA) Voltage (V) Unit: mm Axial type Unit: mm I : Pinch-off current at 10 V P φ V : Voltage which produces 0.8 Ip Minimum taping quantities K or greater current Axial type Reel: 5000 pcs
± 0.1 ± 0.10 ± 0.1 ± 0.05 ± 0.10 ± 0.1 ± 0.1 ± 0.05 + 0.1/-1 ± 0.05 ± 0.1
V : Breakdown voltage B Box: 2500 pcs I : Permitted reverse current SMD element is set with the cathode side on the side with holes. R SMD type 3000 pcs 22