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NXP Semiconductors BY359X-1500,127
- Part No.:
- BY359X-1500,127
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
BY359X-1500,127.pdf
- Description:
- DIODE GEN PURP 1.5KV 10A TO220FP
- Quantity:
- Payment:
- Shipping:
Inventory:7,501
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Product details
Overview
BY359X-1500,127 from Nexperia (formerly Philips Semiconductors) is a fast, high-voltage damper diode in SOD113 package, rated for 1500 V peak repetitive reverse voltage (VRRM), 15.7 A RMS forward current (IF(RMS)), and ≤600 ns reverse recovery time (trr). It features soft recovery, isolated mounting tab, and low forward voltage (VF ≤ 1.8 V at 20 A, 25 °C), designed specifically for horizontal deflection circuits in CRT TV receivers.
For engineers reviewing the BY359X-1500,127 datasheet, BY359X-1500,127 pinout, BY359X-1500,127 application in CRT damper circuits, or BY359X-1500,127 equivalent for high-voltage flyback snubbing, this page delivers verified electrical specs, thermal resistance data, isolation ratings, and real-world design context without generic assumptions.
Technical Context
This damper diode operates in high-frequency horizontal deflection stages (16–32 kHz for TVs), where rapid turn-off and controlled reverse recovery minimize voltage overshoot and EMI. Its soft recovery characteristic-evidenced by trr ≤ 600 ns and Qs ≤ 2.0 µC-reduces switching stress on line output transistors and flyback transformers.
The isolated mounting tab enables direct heatsink attachment while maintaining 2500 V RMS isolation between terminals and heatsink (Visol), and its glass-passivated double-diffused junction ensures stable performance up to 150 °C junction temperature with Rth j-hs ≤ 4.8 K/W when mounted with thermal compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1500 V - Withstands peak repetitive reverse voltage in CRT horizontal output stage without breakdown |
| IF(RMS) | 15.7 A - Sustains continuous RMS current under typical TV deflection waveform loading |
| trr | ≤ 600 ns - Enables fast, low-loss commutation during horizontal retrace period |
| VF | ≤ 1.8 V @ 20 A, 25 °C - Minimizes conduction loss and self-heating in high-current damper path |
| Visol | 2500 V RMS - Ensures safe galvanic isolation between diode terminals and metal heatsink |
| Rth j-hs | ≤ 4.8 K/W - Supports thermal management with heatsink compound for reliable 150 °C operation |
| IR | ≤ 100 µA @ VR = 1300 V, 25 °C - Low leakage preserves efficiency and stability in high-impedance snubber networks |
Pinout & Package
SOD113 plastic package with electrically isolated seating plane and tinned leads (except lead tip); 2 g net mass; UL94 V0 compliant epoxy; dimensions per Fig.7 (15.8 mm max length, 10.3 mm max height).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to collector of line output transistor; carries high-voltage flyback energy during retrace |
| 2 | Anode | Connected to B+ supply rail; completes damper loop during horizontal scan |
| Tab | Isolated Mounting Surface | Electrically isolated from both pins; allows mechanical attachment to heatsink without shorting circuit |
Key Features
| Feature | Design Value |
|---|---|
| Soft recovery characteristic | trr ≤ 600 ns with low Qs (≤2.0 µC) reduces voltage spikes and EMI in CRT horizontal deflection circuits |
| Isolated mounting tab | 2500 V RMS isolation enables safe, low-thermal-resistance heatsinking without additional insulation layers |
| Low forward voltage drop | VF ≤ 1.8 V at 20 A minimizes power dissipation and thermal stress during high-current retrace pulses |
| High thermal cycling performance | Rated for 150 °C junction temperature and qualified for repeated thermal stress in consumer display applications |
| Glass-passivated junction | Double-diffused structure with glass passivation ensures long-term reliability and moisture resistance in plastic SOD113 housing |
Applications
| TV Horizontal Deflection Damper | PC Monitor Flyback Snubber |
|---|---|
Use Scenario: Horizontal output stage in analog CRT television sets operating at 15.625 kHz line frequency. IC Role / Device Role / Timing Role: Damper diode clamping flyback voltage spike across line output transistor during retrace interval. Use Value: Soft recovery and 1500 V VRRM prevent secondary breakdown of LOPT and reduce transformer acoustic noise. | Use Scenario: High-voltage snubbing network in 31–70 kHz PC monitor deflection circuits. IC Role / Device Role / Timing Role: Fast-recovery damper conducting retrace energy into B+ rail while limiting dV/dt stress on switching transistor. Use Value: ≤350 ns trr (BY359X-1500S variant) and isolated tab enable compact, thermally robust layout without creepage compromises. |
| Industrial CRT Display Power Supply | Legacy Broadcast Equipment Repair |
Use Scenario: High-reliability CRT-based instrumentation or medical displays requiring extended service life. IC Role / Device Role / Timing Role: Primary damper in regulated horizontal deflection supply with thermal cycling demands. Use Value: 15.7 A IF(RMS) rating and 55 K/W Rth j-a support natural-convection cooling in sealed enclosures. | Use Scenario: Replacement component for discontinued Philips/Signetics CRT broadcast monitors (e.g., PM5544 test generators). IC Role / Device Role / Timing Role: Direct-fit damper diode preserving original timing, voltage margin, and thermal behavior. Use Value: Identical SOD113 footprint and pinout (cathode/anode/tab) ensure zero-modification board-level replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar damper diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BY359-1500,127 | No isolated tab; Rth j-hs ≈ 6.5 K/W; Visol not specified | Lacks heatsink isolation; requires external insulator; lower thermal performance | Select only if isolation and heatsink integration are unnecessary and board space permits added insulation |
| STTH1602CG | TO-220AC package; 2000 V VRRM; VF = 1.75 V @ 16 A; trr = 35 ns | Ultra-fast but harder recovery; no integrated isolation; higher cost and larger footprint | Prefer for new designs needing faster trr, but verify EMI impact and add isolation hardware |
Compared with BY359X-1500,127, the BY359-1500,127 lacks tab isolation and thermal performance, while STTH1602CG offers superior speed but requires mechanical redesign and external isolation-making BY359X-1500,127 uniquely balanced for legacy CRT damper replacement with integrated safety and thermal management.
Availability
BY359X-1500,127 is available at Aetrix Electronics and suitable for CRT television repair, industrial display maintenance, and legacy broadcast equipment servicing requiring stable component supply and long-lifecycle support.
Supply support for BY359X-1500,127 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
Nexperia is a global semiconductor expert delivering high-performance, reliable discrete, logic, and MOSFET solutions rooted in Philips' legacy of analog innovation.
The BY359X series belongs to Nexperia's high-voltage rectifier product line, engineered specifically for demanding damper and snubber roles in analog video display systems where reliability, soft recovery, and thermal robustness are critical.
FAQ
What is the maximum junction temperature rating for BY359X-1500,127?
The BY359X-1500,127 is rated for continuous operation up to 150 °C junction temperature (Tj), as confirmed in the Limiting Values table. This rating supports reliable use in enclosed CRT chassis with limited airflow, provided thermal resistance to heatsink (Rth j-hs ≤ 4.8 K/W) is maintained using thermal compound.
Does BY359X-1500,127 have an electrically isolated mounting tab?
Yes, BY359X-1500,127 features an electrically isolated mounting tab, verified by the Isolation Limiting Value section: 2500 V RMS isolation voltage (Visol) between both terminals and external heatsink. This eliminates need for mica washers or silicone pads in standard heatsink mounting.
What is the reverse recovery time (trr) specification for BY359X-1500,127?
The BY359X-1500,127 has a maximum reverse recovery time of 600 ns under standard test conditions (IF = 2 A, VR ≥ 30 V, −dIF/dt = 20 A/µs, Tj = 25 °C), as stated in the Dynamic Characteristics table. This value reflects its soft-recovery behavior optimized for CRT horizontal deflection.
Can BY359X-1500,127 be used in PC monitor applications?
Yes, BY359X-1500,127 is suitable for PC monitors operating in the 31–70 kHz range, though the BY359X-1500S variant is preferred for that frequency band due to its lower trr (≤350 ns). The BY359X-1500,127 remains viable where thermal margin and isolation outweigh ultra-fast recovery needs.
What package type does BY359X-1500,127 use?
BY359X-1500,127 uses the SOD113 through-hole plastic package, as explicitly defined in the Pinning and Mechanical Data sections. Dimensions include 15.8 mm max length, 10.3 mm max height, and isolated seating plane-fully compatible with legacy CRT board layouts.
BY359X-1500,127 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- 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):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 1.8 V @ 20 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 600 ns
- Current - Reverse Leakage @ Vr:
- 100 µA @ 1300 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220FP
- Operating Temperature - Junction:
- 150°C (Max)
BY359X-1500,127 FAQ
1.How can I place an order for BY359X-1500,127 through Aetrix?
Please submit a Request for Quotation (RFQ) for BY359X-1500,127 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 BY359X-1500,127 reliable?
The price and inventory of BY359X-1500,127 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BY359X-1500,127 is usually 5 days.
3.What payment methods are accepted for BY359X-1500,127?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BY359X-1500,127 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BY359X-1500,127?
BY359X-1500,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BY359X-1500,127 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 BY359X-1500,127?
For technical support, including BY359X-1500,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BY359X-1500,127 requirements.
6.How does Aetrix verify that BY359X-1500,127 is sourced from the original manufacturer or authorized distributors?
All BY359X-1500,127 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 BY359X-1500,127 meets industry standards.
7.What is the process for return or replacement of BY359X-1500,127?
All BY359X-1500,127 units undergo pre-shipment inspection (PSI). If there is an issue with BY359X-1500,127, 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 BY359X-1500,127 part is unused and in its original packaging.
Return procedure for BY359X-1500,127:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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