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onsemi KSE13003H2AS
- Part No.:
- KSE13003H2AS
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-225AA, TO-126-3
- Datasheet:
-
KSE13003H2AS.pdf
- Description:
- TRANS NPN 400V 1.5A TO-126-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,822
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Product details
Overview
KSE13003H2AS from ON Semiconductor is an NPN silicon power transistor designed for high-voltage switching applications, featuring VCEO = 400 V, IC = 1.5 A (DC), PC = 20 W at TC = 25°C, and hFE = 14–21 (at VCE = 2 V, IC = 0.5 A). It is used in offline switch-mode power supplies and DC motor control circuits where robust voltage handling and fast turn-on/turn-off are required.
For engineers reviewing the KSE13003H2AS datasheet, pinout, applications, or equivalent options, key selection considerations include its TO-126 package thermal performance, hFE classification H2, safe operating area under pulsed load, and saturation voltage behavior at IC = 1.5 A with IB = 0.5 A.
Technical Context
This device operates as a medium-power NPN bipolar junction transistor optimized for high-voltage switching rather than linear amplification. Its design emphasizes high breakdown voltage (VCBO = 700 V), low saturation voltage (VCE(sat) ≤ 3 V at IC = 1.5 A / IB = 0.5 A), and moderate gain bandwidth (fT = 4 MHz), making it suitable for fixed-frequency flyback and forward converter topologies.
Thermal management is critical: maximum junction temperature is 150°C, and power dissipation derates linearly above TC = 25°C. The device's switching times-tON = 1.1 ms, tSTG = 4.0 ms, tF = 0.7 ms-are specified under standardized 125 V / 1 A resistive load conditions with ±0.2 A base drive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCEO | 400 V - supports primary-side switching in universal-input AC/DC adapters up to 264 VAC. |
| IC (DC) | 1.5 A - enables continuous output power up to ~60 W in non-isolated buck-derived topologies. |
| PC @ TC = 25°C | 20 W - requires heatsinking for sustained operation above ambient 40°C in enclosed enclosures. |
| hFE (H2 class) | 14–21 - ensures predictable base drive requirements for 0.5–1.5 A collector loads without overdesigning driver stage. |
| VCE(sat) | ≤3 V @ IC = 1.5 A, IB = 0.5 A - limits conduction loss to ≤4.5 W, critical for thermal budget in compact designs. |
| fT | 4 MHz - sufficient for switching frequencies ≤100 kHz; not intended for MHz-range resonant converters. |
| tON/tF | 1.1 ms / 0.7 ms - defines minimum practical switching period (~3 ms), constraining max duty-cycle operation in PWM controllers. |
Pinout & Package
Package: TO-126 (3-lead, plastic, through-hole), case temperature referenced, flat side facing viewer with leads down: Pin 1 = Emitter, Pin 2 = Collector, Pin 3 = Base.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Emitter) | Current sink terminal | Connected to ground or low-side return path; carries full load current and must be routed with low-inductance layout. |
| 2 (Collector) | High-voltage current source terminal | Interfaces directly with transformer primary or motor winding; requires creepage/clearance per IEC 62368-1 for >250 V applications. |
| 3 (Base) | Control input | Driven by TTL/CMOS-compatible logic or dedicated BJT driver; base resistor selected to ensure IB ≥ IC/hFE(min). |
Key Features
| Feature | Design Value |
|---|---|
| High VCBO | 700 V enables use in 400 V DC bus systems with margin for voltage spikes and ringing. |
| TO-126 thermal interface | Standard footprint allows direct mounting to aluminum heatsinks using M3 screws and thermal compound. |
| H2 hFE binning | Narrower DC current gain range (14–21) improves consistency in batch production of SMPS feedback loops. |
| Low storage time | tSTG = 4.0 ms reduces tail current during turn-off, minimizing cross-conduction loss in half-bridge configurations. |
Applications
| Offline AC/DC Adapters | DC Motor Drive Stages |
|---|---|
Use Scenario: 24–48 V output, 30–60 W flyback converter for industrial control panels. IC Role / Device Role / Timing Role: Primary-side main switch controlling energy transfer from universal AC input to isolated secondary. Use Value: VCEO = 400 V withstands reflected flyback voltage plus line surge; SOA curve supports 1.5 A peak current at 125 V bias. | Use Scenario: Unidirectional brushed DC motor control in HVAC actuators or conveyor modules. IC Role / Device Role / Timing Role: Low-side switching element driven by microcontroller GPIO or dedicated gate driver. Use Value: VCEO = 400 V accommodates back-EMF spikes up to 300 V; tF = 0.7 ms enables PWM frequencies up to 1 kHz without excessive switching loss. |
| LED Driver Circuits | Industrial Power Relays |
Use Scenario: Constant-current LED string driver for signage or emergency lighting (12–24 V input). IC Role / Device Role / Timing Role: Series-pass transistor regulating current through high-brightness LED arrays. Use Value: PC = 20 W supports 1.5 A × 12 V = 18 W dissipation in linear mode; VBE(sat) ≤ 1.2 V simplifies base drive design. | Use Scenario: Solid-state replacement for electromechanical relays in PLC output modules. IC Role / Device Role / Timing Role: High-voltage switching element driving 120/240 VAC solenoid coils via opto-isolated trigger. Use Value: VCBO = 700 V exceeds 240 VAC peak (340 V); Cob = 21 pF minimizes capacitive coupling noise in noisy industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN high-voltage switching transistor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJE13003G | Same TO-126 package, identical VCEO/IC, but hFE = 8–16 (unbinned); fT = 4 MHz same. | No hFE classification - less predictable base drive across lots; higher VCE(sat) typical at 1.5 A. | Select when cost sensitivity outweighs gain consistency; verify worst-case base drive margin. |
| ST13003 | TO-126, VCEO = 400 V, IC = 1.5 A, but hFE = 10–20 (H2-equivalent), tF = 1.0 ms (slower). | Longer fall time increases switching loss at >50 kHz; lower Cob = 15 pF may reduce EMI in sensitive analog sections. | Prefer for lower-frequency (<30 kHz), low-EMI designs where thermal headroom exists. |
Compared with MJE13003G and ST13003, KSE13003H2AS offers tighter hFE control and faster fall time, enabling more consistent base drive design and higher usable switching frequency in space-constrained power stages.
Availability
KSE13003H2AS is available at Aetrix Electronics and suitable for offline AC/DC adapters, DC motor drives, and industrial relay modules requiring stable component supply and documented legacy support.
Supply support for KSE13003H2AS includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The KSE13003H2AS belongs to ON Semiconductor's legacy high-voltage bipolar transistor product line, originally developed by Fairchild for ruggedized switching applications in cost-sensitive industrial power systems.
FAQ
What is the hFE range for KSE13003H2AS?
The KSE13003H2AS is binned to hFE = 14–21 when measured at VCE = 2 V and IC = 0.5 A. This H2 classification ensures tighter gain distribution than unbinned variants like MJE13003G, allowing more accurate base resistor calculation for consistent switching behavior across production batches of KSE13003H2AS.
Is KSE13003H2AS still in active production?
No-KSE13003H2AS is marked DISCONTINUED in official ON Semiconductor documentation. However, Aetrix Electronics maintains legacy inventory and provides lifecycle coordination support for existing designs; customers should contact our team for availability verification and last-time-buy planning for KSE13003H2AS.
What is the maximum safe operating voltage for KSE13003H2AS in a flyback circuit?
In a flyback converter, KSE13003H2AS supports up to 400 V across collector-emitter (VCEO). With proper snubber design and margin for reflected voltage + line surge, it is rated for universal AC input (85–264 VAC) applications. Exceeding 350 V DC on the collector without clamping risks avalanche failure of KSE13003H2AS.
Can KSE13003H2AS replace KSE13003H1AS in an existing design?
Yes-KSE13003H2AS is a direct functional upgrade to KSE13003H1AS, sharing identical TO-126 package, pinout, and absolute maximum ratings. The only difference is hFE range: H1 (9–16) vs. H2 (14–21). Higher minimum hFE in KSE13003H2AS may reduce required base drive current, improving efficiency in existing KSE13003H1AS designs.
What thermal derating applies to KSE13003H2AS above 25°C case temperature?
KSE13003H2AS derates linearly from 20 W at TC = 25°C to 0 W at TC = 125°C, per the published power derating curve. For example, at TC = 75°C, maximum allowable PC = 10 W. Heatsink selection for KSE13003H2AS must account for this slope and ensure junction temperature stays below 150°C under worst-case ambient and airflow conditions.
KSE13003H2AS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-225AA, TO-126-3
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 1.5 A
- Voltage - Collector Emitter Breakdown (Max):
- 400 V
- Vce Saturation (Max) @ Ib, Ic:
- 3V @ 500mA, 1.5A
- Current - Collector Cutoff (Max):
- -
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 14 @ 500mA, 2V
- Power - Max:
- 20 W
- Frequency - Transition:
- 4MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-126-3
KSE13003H2AS FAQ
1.How can I place an order for KSE13003H2AS through Aetrix?
Please submit a Request for Quotation (RFQ) for KSE13003H2AS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for KSE13003H2AS reliable?
The price and inventory of KSE13003H2AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSE13003H2AS is usually 5 days.
3.What payment methods are accepted for KSE13003H2AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSE13003H2AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSE13003H2AS?
KSE13003H2AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSE13003H2AS order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for KSE13003H2AS?
For technical support, including KSE13003H2AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSE13003H2AS requirements.
6.How does Aetrix verify that KSE13003H2AS is sourced from the original manufacturer or authorized distributors?
All KSE13003H2AS products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that KSE13003H2AS meets industry standards.
7.What is the process for return or replacement of KSE13003H2AS?
All KSE13003H2AS units undergo pre-shipment inspection (PSI). If there is an issue with KSE13003H2AS, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The KSE13003H2AS part is unused and in its original packaging.
Return procedure for KSE13003H2AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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