Key Features
|
Parameter |
Typical Value |
Description |
|
Repetitive Peak Reverse Voltage (VRRM) |
6KV – 20KV |
8 voltage grades (6/8/10/12/14/16/18/20KV) |
|
Average Forward Current (IF(AV)) |
10mA |
|
|
Peak Forward Surge Current (IFSM) |
0.5A |
Withstands inrush and repetitive discharge events |
|
Forward Voltage (VFM) |
≤ 60V |
Low power dissipation, minimal heat generation |
|
Reverse Leakage @25°C (IRRM1) |
≤ 3µA (typical) |
Extremely low leakage at room temperature |
|
Reverse Leakage @100°C (IRRM2) |
≤ 10µA |
Excellent high-temperature stability |
|
Reverse Recovery Time (Trr) |
80ns |
|
|
Package Diameter |
φ3mm |
Compact cylindrical body |
|
Package Length |
8 / 10 / 12mm |
Length increases with voltage rating |
|
Lead Diameter |
φ0.6mm |
Standard through-hole compatible |
|
Operating Temperature |
Up to 100°C+ |
Suitable for enclosed / high-temp environments |
Related Series Models Introduction
The RT7 series offers a wide range of repetitive peak reverse voltages, from 6kV to 20kV, depending on the specific model. Examples include:
|
Type |
Rated Values |
Temp. Condition |
Electrical Characteristic |
Dimension |
|||||
|
VRRM |
IF(AV) |
IFSM |
Tj |
Tstg |
VFM |
IR1 |
Trr |
Φbody*L, Φlead |
|
|
[IFM=10mA] |
[VR=VRRM] |
[IF=2mA IRM=4mA] |
|||||||
|
KV |
mA |
A |
℃ |
℃ |
V |
μA |
μS |
mm |
|
|
RT70 |
6 |
10 |
0.5 |
120 |
-40~+120 |
24 |
2 |
0.08 |
Φ3*8/Φ0.6 |
|
RT71 |
8 |
10 |
0.5 |
120 |
-40~+120 |
30 |
2 |
0.08 |
Φ3*8/Φ0.6 |
|
RT72 |
10 |
10 |
0.5 |
120 |
-40~+120 |
32 |
2 |
0.08 |
Φ3*10/Φ0.6 |
|
RT73 |
12 |
10 |
0.5 |
120 |
-40~+120 |
35 |
2 |
0.08 |
Φ3*10/Φ0.6 |
|
RT74 |
14 |
10 |
0.5 |
120 |
-40~+120 |
40 |
2 |
0.08 |
Φ3*10/Φ0.6 |
|
RT75 |
16 |
10 |
0.5 |
120 |
-40~+120 |
45 |
2 |
0.08 |
Φ3*10/Φ0.6 |
|
RT76 |
18 |
10 |
0.5 |
120 |
-40~+120 |
50 |
2 |
0.08 |
Φ3*12/Φ0.6 |
|
RT77 |
20 |
10 |
0.5 |
120 |
-40~+120 |
60 |
2 |
0.08 |
Φ3*12/Φ0.6 |
|
Package outline dimensions |
|
|
|
• Case: Molded Plastic Body • Epoxy meets UL 94V-0 flammability rating • Polarity: Color band denotes cathode end |
Why It Matters
|
10mA Current Capability – Twice that of 2CL7 |
Delivers double the output power in the same package size. Perfect for higher-power HV modules without increasing component footprint. |
|
Full Voltage Coverage: 6KV to 20KV |
8 voltage grades (6/8/10/12/14/16/18/20KV) with consistent φ3mm package. Simplifies BOM, reduces inventory, and allows voltage upgrades without PCB changes. |
|
Ultra-Fast Recovery: 80ns |
80ns for 6-20KV – significantly faster than standard HV diodes (200ns+). Lowers switching losses, reduces heat, and often eliminates heatsinks. |
|
Low High-Temperature Leakage: 10µA @ 100°C |
Maintains only 10µA leakage even at 100°C. Reliable in enclosed chassis, fanless designs, and long-duration continuous operation. |
|
Compact φ3mm Package |
Only 3mm in diameter with lengths from 8mm to 12mm. Achieves up to 20KV rating in a tiny footprint – ideal for dense PCBs and portable devices. |
|
0.5A Surge Capability |
Handles 0.5A peak surge current. Survives power-on inrush and repetitive spark discharge (ionizers, air purifiers, ozone generators). |
|
Mature, Drop-in Replacement |
Industry-standard series widely used in CRT flyback transformers (FBT) and HV power supplies. Directly replaces many obsolete or hard-to-find HV diodes – no board redesign needed. |
RT7 Series vs. 2CL7 Series – Detailed Comparison
|
Comparison Item |
RT7 Series |
2CL7 Series |
|
Forward Current (IF(AV)) |
10mA |
5mA |
|
Voltage Range |
6KV – 20KV |
6KV – 20KV |
|
Recovery Time (Trr) |
80ns |
80ns |
|
Package Diameter |
φ3mm (fixed) |
φ2mm or φ3mm (varies) |
|
Package Length |
8 / 10 / 12mm |
5 / 8 / 10 / 12mm (varies) |
|
Lead Diameter |
φ0.6mm (standard) |
φ0.5mm or φ0.6mm |
|
Forward Voltage (VFM) |
≤ 60V |
≤ 62.5V (depends on model) |
|
Surge Current (IFSM) |
0.5A |
0.5A |
|
Primary Target Application |
CRT FBT, 10mA-level HV power supplies |
Ionizers, ultra-compact HV modules, 5mA-level applications |
Application Area
|
Specific Use Case |
|
|
CRT Displays / TVs / Monitors |
Flyback transformer (FBT) high voltage rectification – original design and aftermarket repair |
|
High Voltage Power Supplies |
Rectifier stage for AC-DC and DC-DC HV converters |
|
Ion & Ozone Generators |
Negative ion generators, air purifiers, electrostatic precipitators, ozone generators |
|
Electrostatic Equipment |
Electrostatic spraying, electrostatic flocking, corona treatment systems |
|
Medical Devices |
Small X-ray power supplies, portable HV therapy equipment |
|
Test & Measurement |
High voltage probes, insulation testers, HV dividers |
|
Pulsed Power |
Capacitor charging circuits, laser drivers, pulse power systems |
|
Legacy Equipment Repair |
Direct replacement for obsolete HV diodes in CRT-based equipment |
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