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NXP Semiconductors BY359X-1500S,127
- Part No.:
- BY359X-1500S,127
- Manufacturer:
- NXP Semiconductors
- Category:
- Single Diodes
- Package:
- TO-220-2 Full Pack
- Datasheet:
-
BY359X-1500S,127.pdf
- Description:
- DIODE GEN PURP 1.5KV 7A TO220FP
- Quantity:
- Payment:
- Shipping:
Inventory:6,737
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Product details
Overview
BY359X-1500S,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 350 ns maximum reverse recovery time (trr). It features soft recovery, isolated mounting tab, and is designed for horizontal deflection circuits in CRT-based PC monitors operating at 31–70 kHz.
For engineers reviewing the BY359X-1500S,127 datasheet, BY359X-1500S,127 pinout, BY359X-1500S,127 application, or BY359X-1500S,127 equivalent, key selection criteria include its 7 A peak forward current rating at monitor frequencies, 2.0 V max VF at 10 A/150 °C, 2500 V RMS isolation voltage, and thermal resistance of 4.8 K/W junction-to-heatsink with compound.
Technical Context
This damper diode operates in flyback energy recovery mode within CRT horizontal deflection yoke circuits, where rapid turn-off and low reverse recovery charge (Qs ≤ 0.95 µC) minimize switching losses and voltage overshoot. Its soft recovery characteristic reduces EMI generation during commutation.
The isolated mounting tab enables direct heatsink attachment without electrical shorting, supporting reliable thermal management under pulsed 7 A peak currents at 31–70 kHz. The glass-passivated double-diffused structure ensures stable performance across -40 °C to 150 °C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1500 V - Maximum repetitive reverse blocking voltage; defines safe operation in 1500 V flyback snubber networks. |
| IF(RMS) | 15.7 A - Continuous RMS current handling; supports sustained conduction during horizontal scan intervals. |
| trr (max) | 350 ns - Guaranteed maximum reverse recovery time; ensures minimal tail current and reduced switching loss in 31–70 kHz monitor applications. |
| VF (max) | 2.0 V @ 10 A, 150 °C - Forward voltage ceiling at elevated temperature; determines conduction loss and thermal load in high-duty-cycle operation. |
| Visol | 2500 V RMS - Isolation voltage between terminals and heatsink; enables safe, grounded heatsink mounting without insulation washers. |
| Rth j-hs | 4.8 K/W - Thermal resistance with heatsink compound; allows calculation of junction temperature rise under defined power dissipation. |
| Qs (max) | 0.95 µC - Maximum reverse recovery charge; directly impacts snubber sizing and voltage spike magnitude during turn-off. |
Pinout & Package
Package: SOD113 - axial-leaded, plastic-encapsulated envelope with electrically isolated seating plane and 2 g net mass. Mounting tab is internally isolated from anode/cathode terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Lead) | Cathode | Negative terminal; connects to yoke return path and snubber capacitor ground reference. |
| 2 (Lead) | Anode | Positive terminal; ties to horizontal output transistor collector and flyback winding. |
| Mounting Tab | Isolated Heatsink Interface | Electrically isolated metal surface for mechanical attachment to heatsink; no internal connection to semiconductor die. |
Key Features
| Feature | Design Value |
|---|---|
| Soft recovery characteristic | Reduces EMI and voltage ringing during turn-off by limiting di/dt of reverse recovery current. |
| Glass-passivated double-diffused junction | Ensures long-term reliability and stable leakage current (IR ≤ 100 µA @ 1300 V, 25 °C) under thermal cycling. |
| Isolated mounting tab | Enables direct, low-thermal-resistance heatsink coupling without additional insulation hardware or layout complexity. |
| Low VF at high Tj | 1.75 V max @ 10 A, 150 °C - minimizes conduction loss and self-heating in thermally constrained monitor chassis environments. |
Applications
| PC Monitor Horizontal Deflection | TV Receiver Damper Circuit |
|---|---|
Use Scenario: Horizontal scan circuit in CRT-based PC monitors operating at 31–70 kHz, requiring precise flyback energy recovery and low EMI. IC Role / Device Role / Timing Role: Damper diode clamping flyback voltage and recovering yoke energy during retrace interval. Use Value: 350 ns trr and soft recovery suppress voltage spikes beyond 1500 V, enabling robust transistor protection without oversized snubbers. | Use Scenario: Horizontal deflection damper in analog TV receivers operating at 15.625 kHz (16–32 kHz range). IC Role / Device Role / Timing Role: Fast-recovery damper diode absorbing inductive kickback from linearity correction windings. Use Value: 600 ns trr (BY359X-1500 variant) and 10 A peak rating support stable operation under TV-specific surge conditions and thermal cycling. |
| High-Voltage Flyback Snubber | Isolated Heatsink Rectifier |
Use Scenario: Secondary-side snubber rectifier in offline flyback converters requiring >1 kV blocking and <1 µs recovery. IC Role / Device Role / Timing Role: High-voltage clamp rectifier conducting flyback energy into RC snubber network. Use Value: 1500 V VRRM and 0.95 µC Qs enable compact snubber design with predictable voltage clamping behavior. | Use Scenario: High-current rectifier mounted directly to grounded metal chassis in space-constrained consumer electronics. IC Role / Device Role / Timing Role: Power rectifier with integrated thermal interface and galvanic isolation from heatsink. Use Value: 2500 V RMS isolation rating eliminates need for mica washers or silicone pads, reducing assembly steps and thermal interface resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar damper diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BY359X-1500,127 | 600 ns max trr; 10 A peak forward current rating for 16–32 kHz TV use | Optimized for lower-frequency TV horizontal deflection (15.625 kHz) | Select when designing for legacy TV receivers or systems requiring higher peak current at lower frequency. |
| STTH1602CG | 200 V VRRM; 16 A IF(RMS); 35 ns trr; TO-220AC package with non-isolated tab | Not suitable for 1500 V flyback; intended for low-voltage SMPS freewheeling | Use only in low-voltage (<300 V) high-speed rectification; requires insulation for heatsink mounting. |
Compared with BY359X-1500,127 and STTH1602CG, the BY359X-1500S,127 uniquely balances 1500 V blocking, 350 ns recovery, and isolated-tab thermal management-making it irreplaceable in monitor-grade damper designs where voltage, speed, and mounting safety are simultaneously critical.
Availability
BY359X-1500S,127 is available at Aetrix Electronics and suitable for CRT monitor manufacturing, legacy TV service replacement, and high-voltage flyback snubber design requiring stable component supply and long-lifecycle support.
Supply support for BY359X-1500S,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, originally spun off from Philips Semiconductors in 2017.
The BY359X series was developed by Philips specifically for CRT horizontal deflection damper applications, emphasizing high-voltage ruggedness, soft recovery, and thermally robust packaging for consumer display electronics.
FAQ
What is the peak forward current rating for BY359X-1500S,127 in monitor applications?
The BY359X-1500S,127 is rated for 7 A peak forward current (IF(peak)) when used in PC monitors operating at 31–70 kHz, as specified in the Philips product specification under limiting values. This rating assumes sinusoidal waveform and accounts for thermal limits at elevated junction temperatures.
Does BY359X-1500S,127 have electrical isolation between its mounting tab and terminals?
Yes, the BY359X-1500S,127 features an electrically isolated mounting tab, verified in the mechanical data and isolation limiting value sections. Its 2500 V RMS isolation voltage (Visol) confirms safe direct attachment to grounded heatsinks without additional insulation.
What is the maximum reverse recovery time (trr) for BY359X-1500S,127?
The maximum reverse recovery time for BY359X-1500S,127 is 350 ns, measured at IF = 2 A, VR ≥ 30 V, and dIF/dt = 20 A/µs, per the dynamic characteristics table in the Philips datasheet. This value applies specifically to the BY359X-1500S variant.
Can BY359X-1500S,127 be used as a direct replacement for BY359X-1500,127?
No-BY359X-1500S,127 is not a direct replacement for BY359X-1500,127 due to differing peak current ratings (7 A vs. 10 A) and reverse recovery times (350 ns vs. 600 ns). Their distinct specifications reflect optimization for monitor vs. TV frequency ranges, requiring circuit validation before substitution.
What is the forward voltage drop of BY359X-1500S,127 at 10 A and 150 °C?
The forward voltage drop of BY359X-1500S,127 is guaranteed not to exceed 2.0 V at 10 A forward current and 150 °C junction temperature, as stated in the static characteristics table. At 25 °C, the typical VF is 1.5 V under the same current condition.
BY359X-1500S,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):
- 7A
- Voltage - Forward (Vf) (Max) @ If:
- 2 V @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 350 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-1500S,127 FAQ
1.How can I place an order for BY359X-1500S,127 through Aetrix?
Please submit a Request for Quotation (RFQ) for BY359X-1500S,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-1500S,127 reliable?
The price and inventory of BY359X-1500S,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-1500S,127 is usually 5 days.
3.What payment methods are accepted for BY359X-1500S,127?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BY359X-1500S,127 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BY359X-1500S,127?
BY359X-1500S,127 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BY359X-1500S,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-1500S,127?
For technical support, including BY359X-1500S,127 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BY359X-1500S,127 requirements.
6.How does Aetrix verify that BY359X-1500S,127 is sourced from the original manufacturer or authorized distributors?
All BY359X-1500S,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-1500S,127 meets industry standards.
7.What is the process for return or replacement of BY359X-1500S,127?
All BY359X-1500S,127 units undergo pre-shipment inspection (PSI). If there is an issue with BY359X-1500S,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-1500S,127 part is unused and in its original packaging.
Return procedure for BY359X-1500S,127:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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