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STMicroelectronics BYT12PI-1000
- Part No.:
- BYT12PI-1000
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-220-2 Isolated Tab
- Datasheet:
-
BYT12PI-1000.pdf
- Description:
- DIODE GP 1KV 12A TO220AC ISOL
- Quantity:
- Payment:
- Shipping:
Inventory:2,078
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Product details
Overview
BYT12PI-1000 from STMicroelectronics is a fast recovery rectifier diode in isolated TO-220AC plastic package, rated for 1000 V repetitive peak reverse voltage, 12 A average forward current at Tc = 50°C, and 155 ns typical reverse recovery time (trr) at 25°C with diF/dt = −15 A/µs - used as freewheeling diode in motor control inverters and SMPS secondary-side rectification.
For engineers reviewing the BYT12PI-1000 datasheet, BYT12PI-1000 pinout, BYT12PI-1000 application, or BYT12PI-1000 equivalent, key selection criteria include verified trr ≤ 155 ns, VRRM = 1000 V, IF(AV) = 12 A, Rth(j–c) = 4 °C/W, and insulated case construction enabling 2500 VRMS isolation in high-voltage DC link protection circuits.
Technical Context
This diode employs optimized silicon PN junction design to achieve low noise turn-off switching and very low switching losses, confirmed by measured tIRM = 200 ns and IRM = 7.8 A under diF/dt = −50 A/µs at Tj = 100°C. Its 7 pF junction capacitance and 1.9 V forward voltage at 12 A (25°C) support efficient high-frequency rectification.
The device operates across −40 to +150°C junction temperature range with thermal resistance of 4 °C/W (junction-to-case), and is rated for 75 A non-repetitive surge current (tp = 10 ms, sinusoidal). It is explicitly specified for freewheeling and SMPS rectifier roles-not general-purpose or signal diode use.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports DC bus voltages up to 707 V RMS in bridge rectifiers without breakdown |
| trr | 155 ns typ. - enables operation up to ~3 MHz switching frequency in hard-switched converters |
| IF(AV) | 12 A at Tc = 50°C, δ = 0.5 - defines continuous conduction capability with heatsink mounting |
| Rth(j–c) | 4 °C/W - requires minimum heatsink thermal resistance ≤ 1.5 °C/W for safe 25 W dissipation at 150°C max junction temp |
| Cj | 7 pF - minimizes capacitive coupling and EMI during high dv/dt commutation events |
| VRSM | 1000 V - matches VRRM, confirming no derating for transient overvoltage handling |
| IFS M | 75 A (10 ms sine) - withstands short-circuit current surges in motor drive fault conditions |
Pinout & Package
Package: Isolated TO-220AC plastic housing with electrically insulated metal tab (2500 VRMS isolation), mounted via M3 screw with recommended torque 80 cm·N. Weight: 1.86 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry | Connected to low-side switch node or transformer secondary in freewheeling path |
| Cathode (Lead 2) | Forward current exit / high-voltage return | Connected to DC bus positive or output rail; carries full load current during conduction |
| Case / Tab | Electrically isolated thermal path | Provides mechanical mounting and heat transfer without electrical connection - enables floating heatsink use |
Key Features
| Feature | Design Value |
|---|---|
| Very low trr (155 ns) | Reduces switching loss and EMI in 20–100 kHz SMPS and motor drive snubberless designs |
| Insulated TO-220AC package | Eliminates need for insulating washers when mounting to grounded heatsinks in high-voltage systems |
| Low VF (1.9 V @ 12 A, 25°C) | Lowers conduction loss by ~15% vs. standard recovery diodes at same current, improving efficiency |
| High IFSM (75 A) | Survives inrush and short-circuit transients in industrial motor controllers without fuse coordination |
| Low noise turn-off | Minimizes voltage overshoot and ringing during di/dt interruption, easing EMI filter design |
Applications
| Motor Drive Freewheeling | SMPS Secondary Rectification |
|---|---|
Use Scenario: Bidirectional current path in IGBT-based 3-phase inverter half-bridge legs during PWM dead-time. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current recirculation path during switch off-state. Use Value: 155 ns trr ensures minimal tail current overlap with next switching event, reducing shoot-through risk and conduction loss. | Use Scenario: Output rectification in 100–500 W offline flyback or forward converters. IC Role / Device Role / Timing Role: High-voltage secondary-side rectifier handling 380 V DC input-derived outputs. Use Value: 1000 V VRRM rating allows direct use in universal-input (85–265 V AC) SMPS without series stacking. |
| Solar Inverter DC Link Protection | Industrial UPS Rectifier Stage |
Use Scenario: Anti-parallel path across DC link capacitors to clamp regenerative energy during grid fault ride-through. IC Role / Device Role / Timing Role: Fast-recovery clamping diode absorbing inductive kickback from DC-link chokes. Use Value: 75 A IFSM and 200 ns tIRM enable reliable energy absorption during 10–100 ms grid dips without thermal runaway. | Use Scenario: Input-stage rectifier in double-conversion UPS handling 400 V AC three-phase input. IC Role / Device Role / Timing Role: High-current, high-voltage rectifier converting AC mains to stable DC bus. Use Value: 25 A IF(RMS) rating and 4 °C/W Rth(j–c) support continuous 10 kVA operation with forced-air cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fast recovery rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH12R06D | VRRM = 600 V, trr = 65 ns, IF(AV) = 12 A, non-isolated TO-220AC | Limited to ≤424 V DC bus; requires insulating hardware for grounded heatsinks | Select when lower VRRM suffices and ultra-fast trr is prioritized over isolation |
| IXYS MUR1220CT | VRRM = 200 V, trr = 35 ns, IF(AV) = 12 A per diode, dual common-cathode TO-220AB | Not suitable for >283 V RMS input; dual configuration enables center-tapped rectifier topologies | Choose for low-voltage, high-frequency synchronous rectifier replacement where isolation is not required |
Compared with STTH12R06D and IXYS MUR1220CT, BYT12PI-1000 uniquely delivers 1000 V isolation-rated blocking with sub-200 ns recovery-making it irreplaceable in 600–800 V DC link motor drives and universal-input SMPS where both voltage margin and thermal safety are non-negotiable.
Availability
BYT12PI-1000 is available at Aetrix Electronics and suitable for motor control inverters, offline SMPS power supplies, and industrial UPS rectifier stages requiring stable component supply and long-term BOM continuity.
Supply support for BYT12PI-1000 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
BYT12PI-1000 belongs to ST's high-voltage fast recovery diode product line, engineered specifically for ruggedized power conversion in motor drives and industrial SMPS where reliability under repetitive surge stress and thermal cycling is critical.
FAQ
Is BYT12PI-1000 still in active production?
No - BYT12PI-1000 is marked "Obsolete Product(s)" in the official STMicroelectronics datasheet (Ed: 1A, October 1999). It remains available through legacy distribution channels and Aetrix Electronics' long-life inventory program with full traceability and extended warranty coverage for existing designs.
Can BYT12PI-1000 be used as a replacement for BYT12P-1000?
Yes - BYT12PI-1000 replaces BYT12P-1000 with identical electrical ratings and enhanced insulation: both share VRRM = 1000 V, IF(AV) = 12 A, and trr = 155 ns, but only the 'I' suffix denotes the isolated TO-220AC package (2500 VRMS), eliminating need for mica washers in grounded heatsink mounts.
What is the maximum allowable case temperature for continuous operation?
The absolute maximum case temperature is not directly specified, but junction temperature must stay ≤150°C. With Rth(j–c) = 4 °C/W and P = 25 W max, the case temperature must remain ≤50°C - matching the IF(AV) = 12 A rating condition. Derating is required above 50°C case temperature per the datasheet's thermal curves.
Does the 7 pF junction capacitance affect EMI performance in high-frequency converters?
Yes - the 7 pF capacitance contributes to displacement current during high dv/dt transitions, but its low value minimizes resonant ringing with PCB trace inductance. Measured low-noise turn-off behavior and absence of snubber requirements in referenced application figures confirm suitability for 100 kHz+ hard-switched topologies without added filtering.
BYT12PI-1000 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-2 Isolated Tab
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 1000 V
- Current - Average Rectified (Io):
- 12A
- Voltage - Forward (Vf) (Max) @ If:
- 1.9 V @ 12 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 155 ns
- Current - Reverse Leakage @ Vr:
- 50 µA @ 1000 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO220AC Isolated
- Operating Temperature - Junction:
- -40°C ~ 150°C
BYT12PI-1000 FAQ
1.How can I place an order for BYT12PI-1000 through Aetrix?
Please submit a Request for Quotation (RFQ) for BYT12PI-1000 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 BYT12PI-1000 reliable?
The price and inventory of BYT12PI-1000 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BYT12PI-1000 is usually 5 days.
3.What payment methods are accepted for BYT12PI-1000?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BYT12PI-1000 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for BYT12PI-1000?
BYT12PI-1000 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your BYT12PI-1000 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 BYT12PI-1000?
For technical support, including BYT12PI-1000 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BYT12PI-1000 requirements.
6.How does Aetrix verify that BYT12PI-1000 is sourced from the original manufacturer or authorized distributors?
All BYT12PI-1000 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 BYT12PI-1000 meets industry standards.
7.What is the process for return or replacement of BYT12PI-1000?
All BYT12PI-1000 units undergo pre-shipment inspection (PSI). If there is an issue with BYT12PI-1000, 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 BYT12PI-1000 part is unused and in its original packaging.
Return procedure for BYT12PI-1000:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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