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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

STMicroelectronics HD1530FX

Name: HD1530FX
Brand: STMicroelectronics
SKU: HD1530FX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HD1530FX

Manufacturer:: STMicroelectronics

Category:: Single Bipolar Transistors

Package:: ISOWATT218FX

Datasheet:: HD1530FX.pdf

Description:: TRANS NPN 700V 26A ISOWATT-218FX

Quantity:: RFQ Add To RFQ list

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Product details

Overview

HD1530FX from STMicroelectronics is a high-voltage NPN power transistor designed for horizontal deflection output stages in digital TV, HDTV, and high-end CRT monitors. It features a diffused collector planar structure with Enhanced High Voltage Structure (EHVS1), 1500 V V_CES, 700 V V_CEO, 26 A I_C, and 70 W total dissipation at T_C = 25°C.

For engineers reviewing the HD1530FX datasheet, HD1530FX pinout, HD1530FX application, or HD1530FX equivalent, key selection criteria include horizontal deflection switching speed (t_s = 1.4–3.2 µs, t_f = 100–230 ns), thermal resistance (R_thJC = 1.8 °C/W), insulation withstand voltage (2500 V RMS), and U.L.-compliant ISOWATT218FX package.

Technical Context

The HD1530FX employs a planar diffused-collector process with EHVS1 architecture to sustain high blocking voltages while maintaining fast switching under inductive load conditions typical of CRT horizontal deflection yoke circuits. Its optimized base drive sensitivity (IB(on) = 0.8–2.0 A) and low saturation voltages (V_CE(sat) = 2 V, V_BE(sat) = 1.5 V at IC = 13 A) reduce driver-stage losses.

Thermal performance is enabled by the fully insulated ISOWATT218FX package, rated for 2500 V RMS insulation between all three leads and external heatsink, and specified for operation up to 150 °C junction temperature with R_thJC ≤ 1.8 °C/W - critical for sustained high-power deflection pulse handling.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CES	1500 V - Sustains full CRT flyback voltage without breakdown during retrace
V_CEO	700 V - Rated collector-emitter blocking voltage under zero-base-current condition
I_C	26 A - Continuous collector current capacity for high-energy horizontal sweep pulses
R_thJC	1.8 °C/W - Enables efficient heat transfer to heatsink in compact CRT chassis layouts
V_ins	2500 V RMS - U.L.-compliant insulation ensures safety isolation from heatsink in consumer displays
t_s/t_f	1.4 µs / 100 ns (at 100 kHz) - Fast storage/fall times minimize switching loss in high-frequency deflection
h_FE	5.5–30 - Low, stable DC gain supports predictable base drive design across operating range

Pinout & Package

The HD1530FX is housed in the ISOWATT218FX package - a fully insulated, U.L.-recognized power package with integral heatsink mounting interface and creepage/clearance compliant with safety standards for CRT display applications.

Pin/Terminal	Circuit Role	Design Meaning
1 (Collector)	Main high-voltage current path	Connected to CRT yoke and flyback transformer primary; carries full horizontal sweep current
2 (Base)	Control input terminal	Receives pulsed drive signal from deflection controller; requires 0.8–2.0 A peak for full turn-on
3 (Emitter)	Low-side return path	Connected to ground reference; forms return path for yoke current and provides feedback sensing point

Key Features

Feature	Design Value
Enhanced High Voltage Structure (EHVS1)	Enables reliable 1500 V blocking while maintaining fast switching and thermal stability
Diffused collector planar technology	Improves silicon efficiency and reduces secondary breakdown risk in inductive CRT loads
U.L.-compliant ISOWATT218FX package	Eliminates need for insulating washers; simplifies mechanical assembly and improves thermal reliability
Low V_CE(sat) and V_BE(sat)	Reduces conduction loss and base drive power requirement in high-duty-cycle deflection stages
Wide operating temperature range	Supports stable performance from –65 °C to +150 °C junction, suitable for sealed CRT enclosures

Applications

Digital Television Horizontal Deflection

HDTV CRT Monitor Output Stage

Use Scenario: Horizontal scanning circuit driving flyback transformer and CRT yoke in 1080i/720p digital TV sets.

IC Role / Device Role / Timing Role: Primary switch in resonant horizontal deflection output stage; handles 15.734 kHz (NTSC) or 31.5 kHz (HDTV) high-current pulses.

Use Value: 1500 V V_CES withstands flyback voltage spikes; 1.4 µs storage time enables clean turn-off at 100 kHz equivalent switching.

Use Scenario: High-resolution CRT monitor requiring precise linearity and minimal geometric distortion.

IC Role / Device Role / Timing Role: Final output transistor delivering 26 A peak current to wide-bandwidth yoke with tight timing control.

Use Value: 70 W power dissipation and 1.8 °C/W thermal resistance support continuous high-brightness operation without derating.

Super-Slim CRT Display Driver

High-End Broadcast Monitor Output

Use Scenario: Space-constrained super-slim CRT chassis where thermal management and insulation are critical.

IC Role / Device Role / Timing Role: High-voltage switching element mounted directly to heatsink via insulated ISOWATT218FX package.

Use Value: 2500 V RMS insulation eliminates external isolation hardware; compact footprint saves board area.

Use Scenario: Professional broadcast-grade CRT monitor demanding long-term reliability and consistent deflection timing.

IC Role / Device Role / Timing Role: Horizontal output device operating at elevated ambient temperatures with minimal parameter drift.

Use Value: Reduced sensitivity to temperature variation ensures stable hFE and V_CE(sat) across –20 °C to +70 °C ambient.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage horizontal deflection transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BU2520DX	V_CES = 1500 V, but lower I_C = 15 A and higher R_thJC = 2.5 °C/W	Suitable for mid-range CRT monitors with reduced deflection energy requirements	Select when lower cost and moderate power are prioritized over peak current capability
2SD2579	V_CEO = 800 V, no U.L.-rated insulation; TO-3P package requires external insulator	Used in legacy industrial CRT systems where safety certification is not mandated	Choose only for non-consumer applications with existing mechanical insulation provisions

Compared with BU2520DX and 2SD2579, the HD1530FX delivers superior thermal performance (1.8 vs. ≥2.5 °C/W), integrated safety insulation, and higher continuous current (26 A), making it uniquely suited for modern high-definition CRT deflection stages requiring both reliability and regulatory compliance.

Availability

HD1530FX is available at Aetrix Electronics and suitable for digital television, HDTV monitor, and super-slim CRT display designs requiring stable component supply and long-lifecycle support.

Supply support for HD1530FX 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power discrete devices, analog ICs, microcontrollers, and automotive electronics.

The HD1530FX belongs to ST's high-voltage power transistor product line, engineered specifically for CRT horizontal deflection applications demanding robustness, safety compliance, and thermal resilience in consumer and professional display equipment.

FAQ

Is HD1530FX still in active production?

No - HD1530FX is marked "Obsolete Product(s)" in ST's official documentation (Rev. 3, Aug 2005). However, Aetrix Electronics maintains legacy inventory with full traceability and offers engineering support for ongoing CRT-based system maintenance and replacement programs.

What is the maximum safe operating frequency for HD1530FX in horizontal deflection?

The device is characterized up to 100 kHz (t_s = 1.4 µs, t_f = 100 ns at f_h = 100 kHz), supporting HDTV horizontal rates up to 31.5 kHz with margin. Operation beyond 100 kHz is not validated and risks increased switching loss and thermal stress.

Can HD1530FX be mounted directly to a metal heatsink without insulation?

Yes - the ISOWATT218FX package provides 2500 V RMS insulation between all three leads and the external heatsink surface, eliminating the need for mica washers or silicone pads in certified consumer display designs.

What base drive current is required for full saturation at 26 A collector current?

At I_C = 26 A, the datasheet specifies I_B = 10 A (absolute maximum), but typical saturation is achieved at I_B = 6.5 A (h_FE ≈ 4). For reliable switching, use I_B(on) = 6–8 A and I_B(off) = –5 A to ensure fast turn-on and controlled turn-off.

HD1530FX Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: ISOWATT218FX

Packaging:: Tube

Product Status:: Obsolete

Transistor Type:: NPN

Current - Collector (Ic) (Max):: 26 A

Voltage - Collector Emitter Breakdown (Max):: 700 V

Vce Saturation (Max) @ Ib, Ic:: 2V @ 3.25A, 13A

Current - Collector Cutoff (Max):: 200µA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 5.5 @ 13A, 5V

Power - Max:: 70 W

Frequency - Transition:: -

Operating Temperature:: 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: ISOWATT-218FX

HD1530FX FAQ

1.How can I place an order for HD1530FX through Aetrix?

Please submit a Request for Quotation (RFQ) for HD1530FX 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 HD1530FX reliable?

The price and inventory of HD1530FX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HD1530FX is usually 5 days.

3.What payment methods are accepted for HD1530FX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HD1530FX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HD1530FX?

HD1530FX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HD1530FX 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 HD1530FX?

For technical support, including HD1530FX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HD1530FX requirements.

6.How does Aetrix verify that HD1530FX is sourced from the original manufacturer or authorized distributors?

All HD1530FX 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 HD1530FX meets industry standards.

7.What is the process for return or replacement of HD1530FX?

All HD1530FX units undergo pre-shipment inspection (PSI). If there is an issue with HD1530FX, 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 HD1530FX part is unused and in its original packaging.

Return procedure for HD1530FX:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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