My Inquiry
My Account
onsemi KSD362RTU
- Part No.:
- KSD362RTU
- Manufacturer:
- onsemi
- Category:
- Single Bipolar Transistors
- Package:
- TO-220-3
- Datasheet:
-
KSD362RTU.pdf
- Description:
- TRANS NPN 70V 5A TO-220-3
- Quantity:
- Payment:
- Shipping:
Inventory:8,205
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
KSD362RTU from ON Semiconductor (formerly Fairchild) is an NPN epitaxial silicon power transistor designed for horizontal deflection output stages in CRT-based B/W television systems. It delivers 5 A collector current, supports 150 V collector-base voltage, and dissipates up to 40 W at TC = 25°C with a DC current gain (hFE) of 40–80 (R-class). Its TO-220 package enables direct heatsink mounting for high-pulse-power switching.
For engineers reviewing the KSD362RTU datasheet, pinout, applications, or equivalent options, key selection criteria include safe operating area (SOA) compliance at 70 V VCEO, saturation voltage under high-current drive (VCE(sat) = 1 V @ IC = 5 A, IB = 0.5 A), thermal derating behavior, and horizontal scan timing robustness in legacy TV deflection circuits.
Technical Context
The KSD362RTU operates as a linearly biased, high-current switch in flyback-type horizontal deflection circuits, where precise control of collector-emitter saturation and fast turn-off are critical to minimize retrace loss and transformer ringing. Its 10 MHz fT and low Cob support stable operation at ~15.734 kHz line frequency with minimal phase shift.
Designed for single-pulse and repetitive pulse operation, the device features a junction temperature limit of 150°C and thermal resistance (RθJC) implied by its TO-220 package and 40 W PC rating. Safe operating area curves confirm capability for short-duration 5 A/70 V switching without secondary breakdown under specified test conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCBO | 150 V - Withstands peak reverse voltage across collector-base during flyback recovery in horizontal deflection transformers. |
| VCEO | 70 V - Maximum sustainable collector-emitter voltage before avalanche in active switching mode; defines usable swing in B/W TV line output stage. |
| IC | 5 A - Continuous collector current rating; supports peak horizontal scan current demands in 14–21 inch CRT displays. |
| VCE(sat) | 1 V @ IC = 5 A, IB = 0.5 A - Low saturation voltage minimizes conduction loss and heat generation during on-state. |
| hFE (R-class) | 40–80 - Guaranteed DC current gain range ensures consistent base drive requirements across production lots for reliable switching. |
| fT | 10 MHz - Sufficient bandwidth for clean switching edges at 15.734 kHz horizontal frequency with margin for harmonics. |
| PC (TC=25°C) | 40 W - Power dissipation capacity at case temperature 25°C; requires heatsinking for sustained operation above ambient. |
Pinout & Package
Package: TO-220 (3-lead, straight lead form, insulated tab). Mounting surface is electrically connected to collector; leads are numbered 1–3 from front view with tab facing down: Pin 1 = Base, Pin 2 = Collector, Pin 3 = Emitter.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Base) | Control input | Receives current-limited drive signal (~0.5 A) to saturate or cut off the transistor; requires series resistor for safe biasing. |
| 2 (Collector) | High-side switched node | Connected to primary winding of horizontal output transformer; carries full scan current and withstands flyback voltage spikes. |
| 3 (Emitter) | Power return path | Direct connection to ground reference; low-inductance layout essential to prevent switching oscillation and VBE instability. |
Key Features
| Feature | Design Value |
|---|---|
| High VCBO rating | 150 V enables robust operation under transformer leakage-induced voltage overshoot in horizontal deflection circuits. |
| R-class hFE binning | 40–80 hFE ensures predictable base drive design across units, reducing need for per-unit calibration in mass-produced TVs. |
| Low VCE(sat) | 1 V saturation voltage at rated current reduces conduction loss to ≤5 W, easing thermal management in compact chassis. |
| TO-220 mechanical standard | Industry-standard footprint and mounting hole pattern allows drop-in replacement and compatibility with existing heatsink tooling. |
| SOA-rated for pulse operation | Validated safe operating area up to 200 ms pulses supports reliable horizontal retrace timing without thermal runaway. |
Applications
| TV Horizontal Deflection Output | B/W CRT Monitor Line Output |
|---|---|
Use Scenario: Driving primary winding of flyback transformer in analog black-and-white television receivers to generate horizontal scanning and EHT. IC Role / Device Role / Timing Role: High-current, high-voltage switch synchronized to 15.734 kHz horizontal sync signal; controls energy storage and release in deflection yoke and HV multiplier. Use Value: 70 V VCEO and SOA compliance ensure stable retrace timing and prevent transformer saturation failure during extended operation. | Use Scenario: Line output stage in monochrome computer monitors requiring precise horizontal sweep and stable focus voltage derivation. IC Role / Device Role / Timing Role: Primary-side switching transistor in self-oscillating or externally triggered horizontal deflection circuit; defines scan linearity and blanking interval. Use Value: 5 A IC rating and 10 MHz fT maintain waveform fidelity across 640×480 resolution timing, minimizing geometric distortion. |
| Legacy Broadcast Equipment | Video Signal Generator Output Stage |
Use Scenario: Horizontal pulse generator in studio-grade video test equipment generating composite sync and blanking signals. IC Role / Device Role / Timing Role: Fast-switching amplifier delivering calibrated 4.7 µs horizontal sync pulses with sharp rise/fall times. Use Value: Low VBE(sat) (1.5 V) and tight hFE binning enable repeatable pulse amplitude and duty cycle control across temperature. | Use Scenario: Output driver in benchtop video pattern generators producing standard-definition NTSC/PAL timing waveforms. IC Role / Device Role / Timing Role: Final-stage buffer amplifying sync, burst, and active video signals to 75 Ω coaxial loads. Use Value: 40 W PC and TO-220 thermal mass sustain 100% duty-cycle test patterns without derating or waveform droop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NPN power switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MJD32C | Higher VCEO (100 V), lower hFE (20–70), TO-263 package; no insulated tab. | Designed for general-purpose power switching, not optimized for CRT flyback SOA or 15.734 kHz timing. | Select when board-level isolation is handled externally and higher VCEO margin is prioritized over legacy TV timing fidelity. |
| 2SC5200 | Higher fT (30 MHz), higher IC (15 A), TO-3P package; broader hFE range (55–160). | Targeted at audio amplifiers and RF drivers; lacks published SOA curves for horizontal deflection pulse duty cycles. | Choose only after verifying SOA compliance at 15.734 kHz pulse width and confirming thermal interface compatibility with TO-3P mounting. |
Compared with MJD32C and 2SC5200, the KSD362RTU offers tighter hFE binning, documented CRT-specific SOA, and TO-220 insulated-tab mounting-making it uniquely suited for cost-sensitive, volume-manufactured B/W TV deflection stages where thermal coupling and timing stability are co-constrained.
Availability
KSD362RTU is available at Aetrix Electronics and suitable for legacy display repair, analog broadcast equipment maintenance, and industrial CRT-based instrumentation requiring stable component supply and long-term obsolescence mitigation.
Supply support for KSD362RTU 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 supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud computing, and consumer electronics markets.
The KSD362RTU belongs to Fairchild's legacy power bipolar transistor product line, engineered specifically for analog video deflection and high-reliability pulse switching in cost-sensitive consumer electronics of the 1990s–2000s.
FAQ
What is the pin configuration of the KSD362RTU?
The KSD362RTU uses a TO-220 package with three leads: Pin 1 is Base, Pin 2 is Collector (connected to the metal tab), and Pin 3 is Emitter. The insulated tab design electrically isolates the collector from the heatsink unless intentionally bonded, which is critical for safe operation in grounded-chassis CRT designs. This pinout is confirmed in the original Fairchild Rev. A datasheet.
Is the KSD362RTU suitable for color TV horizontal deflection?
The KSD362RTU was qualified and characterized for black-and-white TV horizontal deflection, where lower VCEO (70 V) and specific SOA behavior meet system requirements. Color TV deflection typically demands ≥110 V VCEO and enhanced SOA at higher voltages; therefore, the KSD362RTU is not recommended for color CRT applications without full circuit-level validation of flyback stress and thermal cycling.
What does "RTU" signify in KSD362RTU?
The "RTU" suffix in KSD362RTU denotes a Fairchild internal tape-and-reel packaging variant compliant with EIA-481-D standards, intended for automated SMT placement. It does not indicate a parametric change from the base KSD362 - all electrical specifications, hFE binning (R-class), and thermal ratings remain identical to the tube-packaged version.
Can the KSD362RTU replace the KSD362 without design changes?
Yes - the KSD362RTU is a direct form-fit-function replacement for the KSD362, sharing identical TO-220 mechanical dimensions, pinout, absolute maximum ratings, and electrical characteristics. The "RTU" designation reflects only packaging format (tape-and-reel vs. tube); no PCB layout, thermal pad, or schematic modifications are required when substituting KSD362RTU for KSD362.
What is the maximum allowable case temperature for continuous operation of the KSD362RTU?
The KSD362RTU has a maximum junction temperature of 150°C and a storage temperature range of –55°C to +150°C. Its power dissipation derates linearly above TC = 25°C, reaching zero at TC ≈ 115°C based on the published derating curve. For reliable continuous operation, maintain TC ≤ 80°C using appropriate heatsinking and airflow, as verified in Figure 6 of the Fairchild KSD362 datasheet.
KSD362RTU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Transistor Type:
- NPN
- Current - Collector (Ic) (Max):
- 5 A
- Voltage - Collector Emitter Breakdown (Max):
- 70 V
- Vce Saturation (Max) @ Ib, Ic:
- 1V @ 500mA, 5A
- Current - Collector Cutoff (Max):
- 20µA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce:
- 40 @ 5A, 5V
- Power - Max:
- 40 W
- Frequency - Transition:
- 10MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
KSD362RTU FAQ
1.How can I place an order for KSD362RTU through Aetrix?
Please submit a Request for Quotation (RFQ) for KSD362RTU 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 KSD362RTU reliable?
The price and inventory of KSD362RTU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KSD362RTU is usually 5 days.
3.What payment methods are accepted for KSD362RTU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KSD362RTU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KSD362RTU?
KSD362RTU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KSD362RTU 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 KSD362RTU?
For technical support, including KSD362RTU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KSD362RTU requirements.
6.How does Aetrix verify that KSD362RTU is sourced from the original manufacturer or authorized distributors?
All KSD362RTU 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 KSD362RTU meets industry standards.
7.What is the process for return or replacement of KSD362RTU?
All KSD362RTU units undergo pre-shipment inspection (PSI). If there is an issue with KSD362RTU, 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 KSD362RTU part is unused and in its original packaging.
Return procedure for KSD362RTU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KSD362RTU Tags
-
MMBT3906LT1G
onsemi
-
MMBT3904-7-F
Diodes Incorporated
-
MMBT3904LT1G
onsemi
-
MMBT3906-7-F
Diodes Incorporated
-
MMBT3904-TP
Micro Commercial Co
-
MMBT2222A-7-F
Diodes Incorporated
-
BC846BLT1G
onsemi
-
BC847B,215
Nexperia USA Inc.
-
SMMBT3904LT1G
onsemi
-
MMBT2222A-TP
Micro Commercial Co
-
MMBTA06LT1G
onsemi
-
MMBT2222ALT1G
onsemi
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
