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STMicroelectronics DTV1500HDFP
- Part No.:
- DTV1500HDFP
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
DTV1500HDFP.pdf
- Description:
- DIODE GP 1.5KV 6A TO220FPAC
- Quantity:
- Payment:
- Shipping:
Inventory:6,223
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Product details
Overview
DTV1500HDFP from STMicroelectronics is a high-voltage damper diode designed specifically for horizontal deflection stages in CRT television displays. It delivers 1500 V repetitive peak reverse voltage, 6 A average forward current, 12 A peak forward current at 56 kHz, 150 ns typical reverse recovery time, and 1.0 V typical forward voltage drop at 25°C - enabling efficient energy recycling in flyback transformer circuits.
For engineers reviewing the DTV1500HDFP datasheet, DTV1500HDFP pinout, DTV1500HDFP application, or DTV1500HDFP equivalent, key selection criteria include its insulated TO-220FPAC package (2000 V DC isolation), low VFP of 21 V under fast dI/dt switching, and specified turn-on recovery behavior for CRT horizontal scan timing integrity.
Technical Context
This diode operates as a snubber/damper in the horizontal deflection yoke circuit of CRT TVs, absorbing flyback energy during line retrace. Its planar junction structure ensures stable trr ≤ 250 ns and low Qrr, critical for minimizing switching losses at 15.625–31.25 kHz line frequencies.
Thermal design relies on Rth(j-c) = 5.4 °C/W and Tj(max) = 175°C, with conduction loss modeled by P = 1.15 × IF(AV) + 0.033 × IF²(RMS). The 12 pF junction capacitance at VR = 30 V supports stable high-frequency waveform shaping without parasitic resonance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1500 V - Withstands full flyback voltage spikes in CRT horizontal deflection without breakdown |
| IF(AV) | 6 A - Sustains continuous forward current during active scan period |
| trr (typ) | 150 ns - Enables clean, low-loss commutation at 56 kHz switching frequency |
| VF (typ) | 1.0 V @ 25°C - Minimizes conduction loss and thermal stress during forward conduction |
| VFP (typ) | 21 V @ dI/dt = 80 A/µs - Limits transient overvoltage during rapid current reversal |
| Rth(j-c) | 5.4 °C/W - Supports direct heatsink mounting for reliable 175°C junction operation |
| Cj | 12 pF @ 1 MHz - Stabilizes high-frequency response without oscillation in deflection tank circuits |
Pinout & Package
Package: TO-220FPAC - Insulated plastic package with electrically isolated tab (2000 V DC isolation), 1.8 g mass, and standardized mechanical footprint per STMicroelectronics drawing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Forward current entry point | Connected to horizontal output transistor collector and flyback primary winding |
| Cathode (K) | Forward current exit / reverse blocking terminal | Connected to ground reference and damper RC network input |
| Tab (Isolated) | Mounting surface only | Electrically isolated metal tab enables direct heatsink attachment without insulation washer |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage damper capability | Rated for 1500 V repetitive reverse voltage - matches CRT flyback transformer secondary voltage swing |
| Fast, controlled recovery | trr = 150 ns typ. with low Qrr - reduces switching loss and EMI in horizontal deflection stage |
| Low peak forward voltage | VFP = 21 V max under 80 A/µs dI/dt - suppresses voltage overshoot during current collapse |
| Insulated TO-220FPAC package | 2000 V DC isolation between tab and terminals - eliminates need for insulating hardware in heatsink mounting |
| Planar junction technology | Ensures consistent trr, VF, and thermal stability across production lots and temperature range |
Applications
| CRT Television Horizontal Deflection | High-Resolution CRT Monitor Deflection |
|---|---|
Use Scenario: Horizontal scanning in analog broadcast TV receivers using 15.625 kHz line frequency. IC Role / Device Role / Timing Role: Damper diode in flyback snubber network, clamping reverse voltage and recycling stored inductive energy. Use Value: Prevents horizontal output transistor avalanche failure by limiting VCE spike to ≤1500 V during retrace. | Use Scenario: High-resolution computer monitors operating at 31.25 kHz line rate with tighter timing margins. IC Role / Device Role / Timing Role: Fast-recovery damper in high-frequency deflection yoke circuit requiring minimal trr dispersion. Use Value: Maintains stable scan line geometry by ensuring <250 ns trr consistency across -25°C to +125°C ambient. |
| Legacy Broadcast Equipment Repair | Industrial CRT-Based Test Instrumentation |
Use Scenario: Field replacement of failed damper diodes in aging studio broadcast transmitters. IC Role / Device Role / Timing Role: Direct-fit replacement for obsolete DTV1500HD series in service manuals. Use Value: Matches original marking (DTV1500HDFP), TO-220FPAC footprint, and thermal profile for plug-and-play repair. | Use Scenario: Oscilloscope and spectrum analyzer front-end CRT driver stages requiring long-term reliability. IC Role / Device Role / Timing Role: Energy-recycling damper in precision deflection amplifiers with strict thermal derating needs. Use Value: Supports 175°C max junction temperature and 5.4 °C/W Rth(j-c) for continuous duty in enclosed chassis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage damper diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH12R06D | 600 V VRRM, 12 A IF(AV), 65 ns trr - lower voltage rating, faster recovery | Not suitable for 1500 V CRT flyback; limited to SMPS or lower-voltage deflection | Select only if redesigning circuit for <800 V operation and prioritizing speed over voltage margin |
| BYV26E | 1300 V VRRM, 2.5 A IF(AV), 50 ns trr - lower current/voltage ratings, smaller TO-220AC package | Lacks insulated tab and thermal capacity for sustained 6 A CRT deflection loads | Acceptable only for low-power legacy monitor repair where heat dissipation is not constrained |
Compared with STTH12R06D and BYV26E, DTV1500HDFP uniquely satisfies the combined requirements of 1500 V standoff, 6 A average current, TO-220FPAC insulation, and CRT-tuned recovery dynamics - making it non-interchangeable without circuit revision.
Availability
DTV1500HDFP is available at Aetrix Electronics and suitable for CRT television repair, legacy broadcast equipment maintenance, and industrial test instrumentation requiring stable component supply and documented legacy compatibility.
Supply support for DTV1500HDFP 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, microcontrollers, and automotive ICs.
DTV1500HDFP belongs to ST's high-voltage damper diode product line, engineered specifically for analog video display deflection systems requiring robust flyback energy handling and precise timing control.
FAQ
Is DTV1500HDFP still in active production?
No - DTV1500HDFP is marked as obsolete in STMicroelectronics' official documentation (Rev. 4, March 2005). However, Aetrix Electronics maintains legacy inventory with full traceability and provides engineering support for continued use in repair and maintenance programs.
Can DTV1500HDFP be mounted directly to a heatsink without insulation?
Yes - the TO-220FPAC package features an electrically isolated metal tab rated for 2000 V DC isolation, allowing direct screw-mounting to grounded heatsinks without mica washers or silicone pads.
What is the maximum allowable dI/dt for reliable operation?
DTV1500HDFP is characterized up to 80 A/µs (per Figure 5 and Table 7), with VFP = 21 V typical at that rate. Exceeding this may increase VFP beyond 29 V and risk overstress in high-dI/dt CRT deflection waveforms.
How does junction capacitance affect CRT deflection performance?
At 12 pF (measured at 1 MHz, 30 mV RMS), Cj minimizes phase shift and ringing in the resonant deflection tank circuit, preserving linearity and preventing horizontal geometry distortion at 15–31 kHz scan frequencies.
DTV1500HDFP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-2 Full Pack
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1500 V
- Current - Average Rectified (Io):
- 6A
- Voltage - Forward (Vf) (Max) @ If:
- 1.6 V @ 6 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 1 µs
- Current - Reverse Leakage @ Vr:
- 100 µA @ 1500 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220FPAC
- Operating Temperature - Junction:
- 175°C (Max)
DTV1500HDFP FAQ
1.How can I place an order for DTV1500HDFP through Aetrix?
Please submit a Request for Quotation (RFQ) for DTV1500HDFP 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 DTV1500HDFP reliable?
The price and inventory of DTV1500HDFP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DTV1500HDFP is usually 5 days.
3.What payment methods are accepted for DTV1500HDFP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DTV1500HDFP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DTV1500HDFP?
DTV1500HDFP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DTV1500HDFP 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 DTV1500HDFP?
For technical support, including DTV1500HDFP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DTV1500HDFP requirements.
6.How does Aetrix verify that DTV1500HDFP is sourced from the original manufacturer or authorized distributors?
All DTV1500HDFP 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 DTV1500HDFP meets industry standards.
7.What is the process for return or replacement of DTV1500HDFP?
All DTV1500HDFP units undergo pre-shipment inspection (PSI). If there is an issue with DTV1500HDFP, 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 DTV1500HDFP part is unused and in its original packaging.
Return procedure for DTV1500HDFP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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