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MJE13001 / MJE13002 NPN Power Transistor — TO-92, 600V, 200mA, SMPS & CFL (50-Pack)
MJE13001 / MJE13002 NPN Power Transistor TO-92, 600V, 200mA, SMPS & CFL (50-Pack)
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MJE13001 / MJE13002 NPN Power Transistor — TO-92, 600V, 200mA, SMPS & CFL (50-Pack)
The MJE13001 and MJE13002 are high-voltage NPN power transistors in TO-92 packages, rated at 600V collector-emitter voltage and 200mA continuous collector current. Designed for high-voltage switching applications, they are widely used in SMPS startup circuits, compact fluorescent lamp (CFL) ballasts, flyback converter auxiliary supplies, and high-voltage signal switching. The TO-92 package provides a compact footprint for PCB-mounted high-voltage switching stages.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TO-92 (through-hole) |
| Type | NPN silicon power transistor |
| Collector-Emitter Voltage (VCEO) | 600V |
| Collector-Base Voltage (VCBO) | 700V |
| Continuous Collector Current (IC) | 200mA |
| DC Current Gain (hFE) | 8–40 (at IC=100mA) |
| Collector Power Dissipation (PC) | 625mW (TO-92, free air) |
| Transition Frequency (fT) | ~4MHz |
| Operating Temperature | -55°C to +150°C |
| Quantity | 50 pieces |
MJE13001 vs MJE13002 vs 2SC1815
| Feature | MJE13001 | MJE13002 | 2SC1815 |
|---|---|---|---|
| VCEO | 600V | 600V | 50V |
| IC max | 200mA | 200mA | 150mA |
| hFE | 8–40 | 8–40 | 70–700 |
| Best for | High-voltage SMPS, CFL ballast | High-voltage SMPS, CFL ballast | Low-voltage audio, signal switching |
Why Choose MJE13001 / MJE13002?
- 600V VCEO — handles mains-derived high-voltage DC bus (up to 400V DC from 230V AC rectified)
- TO-92 compact package — small footprint for high-voltage switching in compact SMPS and CFL PCBs
- 200mA collector current — sufficient for SMPS startup, gate drive, and auxiliary supply circuits
- -55°C to +150°C — wide temperature range for industrial and lighting applications
- 50-pack value — sufficient for multiple SMPS repair jobs and CFL ballast replacements
Compatible With / Common Use Cases
- SMPS startup circuit: High-voltage startup transistor in flyback SMPS (ATX power supply, phone charger, adapter)
- CFL ballast: Half-bridge switching transistor in compact fluorescent lamp electronic ballast
- Flyback auxiliary supply: High-voltage switch for auxiliary winding rectifier in isolated SMPS
- High-voltage signal switching: Switch 100–400V DC signals in industrial control circuits
- Snubber circuit: Clamp high-voltage spikes in inductive switching circuits
Frequently Asked Questions
Q: What is the difference between MJE13001 and MJE13002?
A: MJE13001 and MJE13002 have identical electrical specifications (600V, 200mA, hFE 8–40). The difference is typically in the gain grouping or manufacturing batch — they are functionally interchangeable in most SMPS and CFL applications. Always verify with the specific datasheet for your application.
Q: Can MJE13001 replace 2SC3457 or 2SC4106 in a CFL ballast?
A: MJE13001 is a common replacement for high-voltage NPN transistors in CFL ballasts. Verify VCEO (≥600V), IC (≥200mA), and package (TO-92) match before substituting. The hFE range (8–40) is typical for CFL ballast transistors. Check the original transistor’s datasheet for exact specifications.
Q: Why does MJE13001 have such low hFE (8–40) compared to BC547 (420–800)?
A: High-voltage transistors inherently have lower current gain than low-voltage signal transistors. The high-voltage junction design that enables 600V VCEO reduces the minority carrier lifetime, resulting in lower hFE. For SMPS and CFL applications, low hFE is acceptable because the base drive current is provided by the oscillator circuit, not a microcontroller GPIO.
Package Contents
- 50× MJE13001 / MJE13002 NPN Power Transistor (TO-92)
