KSE13007 - 700V 8A NPN High Voltage Transistor | onsemi
MPN: KSE13007 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.55 | $0.55 |
| 10 | $0.48 | $4.80 |
| 100 | $0.38 | $38.00 |
| 500 | $0.32 | $160.00 |
| 1,000 | $0.27 | $270.00 |
KSE13007 Overview
A high-voltage NPN power BJT is a current-controlled semiconductor switch that withstands large collector-emitter voltages while conducting multi-ampere load currents. In the power-management hierarchy it sits as a discrete power transistor within the broader family of switching devices, alongside MOSFETs and IGBTs, and remains popular in offline converter designs where rugged avalanche tolerance and low cost outweigh the gate-drive simplicity of a MOSFET.
Key features include a 700 V collector-base voltage rating (VCEO rating is marked in source snippets; the 13007 family is conventionally a 400 V VCEO class part), an 8 A continuous collector current rating with a higher pulsed collector peak, and fast switching characteristics suited to switch-mode power supplies. The Fairchild datasheet (Rev. A1, December 2000) specifies absolute maximum ratings at a case temperature of 25 C and pulse-test conditions of PW <= 300 us, duty cycle <= 2%.
Architecturally, the KSE13007 uses the standard NPN epitaxial planar structure of the MJE13007 family, with current gain typically in the 8 to 60 range depending on hFE group (H1: 15-28, H2: 26-39 per family data). Base drive must be sized to saturate the device at full load while keeping storage time short for efficient high-frequency switching.
Typical applications include offline flyback and forward converter switching regulators, CRT and lighting power stages, DC-DC converters, and motor control circuits - anywhere a rugged, inexpensive high-voltage switch is required.
Design consideration: verify second-breakdown (SOA) margins at high VCE, and provide adequate base-drive turn-off to minimize storage time.
This page synthesizes cross-reference data, drop-in alternatives, and practical design notes beyond the manufacturer datasheet. Pricing shown is as of 2026-10-21.
Drop-in alternatives for KSE13007 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
KSE13007F
✅ Drop-In📋 Reference alternative (not in catalog)
FJP13007
✅ Drop-In📋 Reference alternative (not in catalog)
MJE13007
✅ Drop-In📋 Reference alternative (not in catalog)
MJE13007A
✅ Drop-In📋 Reference alternative (not in catalog)
MJE13007G
✅ Drop-In📋 Reference alternative (not in catalog)
STD13007F
✅ Drop-In📋 Reference alternative (not in catalog)
KSE13007 Maximum Ratings & Electrical Characteristics
| Transistor Type | NPN Silicon Bipolar Junction Transistor (BJT) |
| Collector-Base Voltage (Vcbo) | 700 V |
| Collector Current (Ic) | 8 A |
| DC Current Gain (hFE) | 8 to 60 (family range; H1: 15-28, H2: 26-39) |
| Switching Characteristic | High speed switching |
| Package | TO-220 |
| Mounting Type | Through Hole |
| Polarity | NPN |
| Configuration | Single transistor |
| Typical Applications | Switching regulator, motor control, switch-mode power supply |
| Test Conditions | TC=25 C; pulse test PW <= 300 us, duty cycle <= 2% |
| hFE Gain Groups | H1, H2 (suffix variants) |
KSE13007 Pin Configuration
| Pin 1 | Base — Base drive input (current-controlled terminal) |
| Pin 2 | Collector — Collector terminal, connected to mounting tab on non-isolated TO-220 |
| Pin 3 | Emitter — Emitter terminal |
Typical Applications
KSE13007 is suitable for 6 applications: Offline Flyback Switching Regulator, Motor Control and Drive Circuits, DC-DC Converters and Voltage Inverters, Switch-Mode Power Supply Repair and Legacy Maintenance, High-Voltage Lighting and Ballast Circuits, General High-Voltage Switching and Relay Drivers.
Offline Flyback Switching Regulator
The KSE13007 was designed primarily for switch-mode power conversion, and the Fairchild datasheet explicitly names switching regulators as a target application. In an offline flyback converter, the transistor acts as the main switch on the primary side, withstanding reflected flyback voltages plus the rectified line input - the 700 V VCBO rating provides margin against leakage-inductance spikes on a 220 VAC input. Its 8 A collector rating covers converters in the 50-150 W class. Because it is a BJT, design a proportional base drive with fast turn-off (Baker clamp or negative drive) to keep storage time short; typical conversion frequencies of 20-65 kHz balance switching loss against transformer size. Snubber or clamp networks across the primary remain mandatory to keep VCE within the 400 V-class VCEO rating.
Recommended
Motor Control and Drive Circuits
The Fairchild datasheet lists motor control as a core application for the KSE13007, which suits brushed-DC motor switching, PWM chopper drives, and relay/solenoid drivers in appliance and industrial equipment. Its 8 A continuous collector current directly handles typical small-motor stall and running currents, while the 700 V VCBO rating absorbs inductive kick from the motor windings when combined with a free-wheeling path. In PWM drive, the high-speed switching characteristic keeps transition losses manageable at typical chopper frequencies up to roughly 20 kHz. Because a BJT requires continuous base current, size the driver stage for the forced-beta condition at maximum motor current, and use the SOA curve to verify operation during start-up current surges, where collector current can reach the pulsed rating.
Recommended
DC-DC Converters and Voltage Inverters
In high-voltage DC-DC converters, boost stages, and DC-AC inverter push-pull or half-bridge legs, the KSE13007 provides a rugged, low-cost NPN switch. Its 400 V-class VCEO supports 12 V, 24 V, or rectified-mains input buses with transformer-coupled conversion, and the high-speed switching characteristic supports the 20-50 kHz range typical of BJT-based inverters used in UPS units, fluorescent-lamp ballasts, and automotive inverters. Cross-reference sources list the 13007 family as the standard switch for these inverters. Use proportional or anti-saturation base drive to minimize storage time in the bridge legs, keep the transformer leakage inductance low, and place RC snubbers across each transistor so collector voltage excursions remain within the 700 V VCBO absolute maximum at all times.
Recommended
Switch-Mode Power Supply Repair and Legacy Maintenance
The KSE13007 is one of the most common transistors found in legacy switch-mode power supplies for CRT monitors, ATX desktop PSUs, battery chargers, and industrial control supplies, making it a staple part for repair and service work. When a failed switch-mode transistor is diagnosed, the 13007 family is the default replacement, and this page's cross-reference data (FJP13007, KSE13007F, MJE13007, MJE13007A, MJE13007G, STD13007F) guarantees a pin-compatible substitution is available from multiple manufacturers. Service technicians should verify the hFE gain group (H1: 15-28, H2: 26-39) if the original carried a suffix, check the tab isolation requirement (TO-220 vs isolated TO-220F), and always investigate the root failure cause - such as a shorted snubber capacitor - before powering up the repaired supply.
Recommended
High-Voltage Lighting and Ballast Circuits
Fluorescent lamp electronic ballasts and high-intensity lighting drivers historically used 13007-family transistors in half-bridge resonant topologies, and the KSE13007 remains a direct fit for this application in service and legacy production. The rectified mains bus sits around 310 VDC on a 220 VAC line, and the resonant tank swings the collector above the bus - the 700 V VCBO provides the required headroom while the 8 A rating covers lamp start-up current surges. The transistor's high-speed switching suits the 25-50 kHz ballast operating range, above audible noise. In this application the transistors self-oscillate via saturating drive transformers, so hFE group consistency between the two bridge devices matters; match gain groups (H1/H2 suffixes) to keep the half-bridge balanced and prevent one device from running hotter.
Recommended
General High-Voltage Switching and Relay Drivers
Beyond power conversion, the KSE13007 serves as a general-purpose high-voltage NPN switch for driving relays, solenoids, capacitive-discharge circuits, and ignition-style loads where the supply voltage or inductive spikes exceed what low-voltage transistors tolerate. The 700 V VCBO and robust avalanche behavior give designers margin on unclamped inductive events, though a free-wheeling diode is still recommended for long relay life. With 8 A capability, one transistor can drive multiple heavier loads directly without an intermediate driver stage, simplifying BOM cost in industrial control panels. In logic-driven designs, remember the BJT needs a base resistor sized for forced beta of roughly 10 at full load; the H1/H2 gain-group data helps predict saturation voltage. Verify the SOA in DC mode when loads are continuous rather than pulsed.
Recommended
Recommended Products Summary
Engineering reference data for KSE13007 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | KSE13007F | FJP13007 | MJE13007 | MJE13007A | STD13007F |
|---|---|---|---|---|---|---|
| Package | TO-220 | TO-220F (isolated tab) | TO-220F (isolated tab) | TO-220AB | TO-220AB | TO-220F-style (isolated) |
| Brand | onsemi (Fairchild) | onsemi (Fairchild) | onsemi (Fairchild) | onsemi (Motorola lineage) | onsemi (Motorola lineage) | STMicroelectronics |
| Collector-Base Voltage (VCBO) | 700 V | 700 V | 700 V | 700 V | 700 V | 700 V |
| Collector Current (IC) | 8 A | 8 A | 8 A | 8 A | 8 A | 8 A |
| Polarity / Type | NPN BJT, high-speed switching | NPN BJT | NPN BJT | NPN BJT | NPN BJT | NPN BJT |
| Tab Isolation | No (tab = collector) | Yes (isolated tab) | Yes (isolated tab) | No (tab = collector) | No (tab = collector) | Yes (isolated tab) |
| Primary Application | Switching regulator, SMPS, motor control | SMPS, isolated heatsink mounting | SMPS, isolated heatsink mounting | SMPS, inverter, motor control | SMPS, inverter, motor control | SMPS, isolated mounting |
Key Differentiators
- Non-isolated TO-220 for lowest thermal resistance (vs KSE13007F)
- Fairchild/onsemi original sourcing with hFE suffix groups (vs MJE13007)
- Same-family cross-manufacturer availability (vs STD13007F)
Design Notes
As a BJT, the KSE13007 requires deliberate base-drive design. For full 8 A switching, use a forced beta of about 10 (roughly 0.8 A of base current capability at peak), which most small driver transistors cannot supply continuously - use a drive transformer or a two-stage driver in offline converters. Provide fast turn-off via a Baker clamp or negative base drive to extract stored charge; otherwise storage time extends to several microseconds and switching losses dominate above 30 kHz.
The mounting tab of the standard KSE13007 (TO-220) is electrically connected to the collector. If the heatsink is chassis-grounded, use an insulating pad and shoulder washer, or select the KSE13007F isolated-tab variant to eliminate the insulator and its added thermal resistance. Estimated: a typical mica+grease insulator adds roughly 0.4-1.0 C/W - verify against the final thermal stack in high-dissipation SMPS designs.
Do not exceed the 400 V-class VCEO in flyback designs without a clamp/snubber: leakage-inductance spikes commonly push collector voltage 100-150 V above the reflected voltage. The absolute maximum ratings in the Fairchild datasheet apply at TC = 25 C with pulse test PW <= 300 us, duty cycle <= 2% - continuous operation requires SOA derating at elevated case temperature. When substituting, confirm the replacement's tab isolation matches the original footprint (TO-220 vs TO-220F).
Compliance Information
The verified web data does not include RoHS/REACH status for KSE13007. The MJE13007G suffix variant is conventionally the Pb-free/green option within the family. Confirm compliance from the official onsemi product page before volume procurement.
