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KWX Wirewound Resistors ACR

Product catalog summary

Features and Specifications
ACR Wire Wound Resistors are designed with a ceramic core and high Al2O3 content, providing high power dissipation in a small volume. They are suitable for high pulse applications and are coated with non-flammable cement.

Ordering Information
The ordering code includes the series name (ACR), power rating (e.g., 01 for 1W), resistance tolerance (e.g., F for ±1%), resistance value (e.g., 4R7 for 4.7Ω), forming type (e.g., M type), and packing type (e.g., B for Bulk).

Reference Standards
These resistors comply with IEC 60115-1 standards.

Construction and Dimensions
The resistors are constructed with a lead wire, cap, ceramic core, wire wound, marking or color code, and insulation coat. Dimensions vary by power rating, with specific measurements provided for each type (e.g., ACR01, ACR03, etc.).

Applications and Ratings
The resistors are rated for different power levels at 40°C and 70°C, with specific resistance ranges and temperature coefficients of resistance (TCR). They are tested for pulse voltage overload and have specific derating curves for surface temperature rise.

Performance Characteristics
Performance tests include resistance, TCR, short time overload, load life, moisture resistance, temperature cycle, solderability, resistance to soldering heat, insulation resistance, and flameproof tests. Each test has specific performance requirements and methods as per IEC 60115-1 standards.

Pulse Diagrams
Pulse capability diagrams illustrate the maximum permissible peak pulse power as a function of pulse duration for different ACR types (e.g., ACR01, ACR03, etc.).

Catalog excerpts

0 Features I Ceramic core II High AI2O3 HNon-flammable cement coating IV High power dissipation in small volume V Perfect for high pulse application Series Name Power Resistance Resistance Forming Packing Rating Tolerance (5)Forming:M type;F type; K type etc. (6) Packing: B = Bulk ,T=Tape&Reel 0 Reference Standards IEC 60115-1

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ACR Wire Wound Resistors Applications And Ratings Type Limiting Resistance Range(1)Ω Resistance Range(1)Ω Resistance Range(1)Ω Tolerance TCR =-10ppm/k TCR =100ppm/k Voltage TCR =100ppm/k ±% to -80ppm/k to 180ppm/k Umax Surface Temperature Rise Temperature Rise Ambient Temperature℃ Pulse Voltage Overload Test 10000 1000 ACR04 Pulse on a regular basis; maximum permissible peak pulse power ( ^ Pmax.) as a function of pulse duration (ti) ACR04 Pulse on a regular basis; maximum permissible peak pulse power ( ^ max.) as a function of pulse duration (ti) P ACR03 Pulse on a regular basis; maximum permissible...

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ACR Wire Wound Resistors Ⅱ PULSE DIAGRAMS 1000 Pulse Energy (Ws/Ω) 10000 R(Ω) ACR01 Pulse capability; E (Ws) as a function of R (Ω) 10000 R(Ω) ACR03 Pulse capability; E (Ws) as a function of R (Ω) 10000 R(Ω) ACR05 Pulse capability; E (Ws) as a function of R (Ω) 10000 R(Ω) ACR04 Pulse capability; E (Ws) as a function of R (Ω) 1000 Pulse Energy (Ws/Ω) 10000 R(Ω) ACR07 Pulse capability; E (Ws) as a function of R (Ω) 10000 R(Ω) ACR10 Pulse capability; E (Ws) as a function of R (Ω) Performance Characteristics Test Items Performance Requirements Within specified tolerance Measuring points are 10mm...

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