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STMicroelectronics TN1215-800B-TR
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- Part No.:
- TN1215-800B-TR
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
TN1215-800B-TR.pdf
- Description:
- SCR 800V 12A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:6,526
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Product details
Overview
TN1215-800B-TR from STMicroelectronics is a standard 12 A, 800 V repetitive peak off-state voltage (VDRM/VRRM) silicon-controlled rectifier (SCR) in DPAK surface-mount package with 15 mA gate trigger current (IGT), designed for overvoltage crowbar protection and motor control circuits in power tools and kitchen appliances.
For engineers reviewing the TN1215-800B-TR datasheet, TN1215-800B-TR pinout, TN1215-800B-TR application, or TN1215-800B-TR equivalent, key selection considerations include RMS on-state current rating (12 A), thermal resistance junction-to-case (1.3 °C/W), dV/dt immunity (200 V/µs at 125 °C), and compatibility with standard DPAK PCB layouts for high-reliability industrial power switching.
Technical Context
This SCR operates as a unidirectional latching switch triggered by a positive gate pulse relative to cathode, sustaining conduction until anode current falls below holding current (IH ≤ 40 mA). It features a threshold voltage (Vto) of ≤ 0.85 V and dynamic resistance (Rd) of ≤ 30 mΩ at 125 °C, enabling low conduction loss in phase-controlled AC loads.
Designed for 50/60 Hz line-frequency applications, it supports non-repetitive surge currents up to 115 A (8.3 ms) and exhibits critical dI/dt capability of 50 A/µs with 2×IGT gate drive, ensuring robust turn-on under inductive load conditions without false triggering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 12 A - Sustains continuous RMS load current in 180° conduction mode at Tc = 110 °C. |
| VDRM / VRRM | 800 V - Maximum repetitive peak off-state voltage blocking capability in both directions. |
| IGT | 15 mA - Maximum gate trigger current required at VD = 12 V, RL = 33 Ω to ensure reliable turn-on. |
| dV/dt | 200 V/µs - Minimum rate of rise of off-state voltage before spurious turn-on occurs at Tj = 125 °C. |
| Rth(j-c) | 1.3 °C/W - Junction-to-case thermal resistance enables effective heat transfer to heatsink via DPAK tab. |
| VTM | 1.6 V - Maximum on-state voltage drop at ITM = 24 A, defining conduction loss at peak load. |
| IH | 40 mA - Maximum holding current required to maintain conduction after gate signal removal. |
Pinout & Package
The TN1215-800B-TR uses a 3-pin DPAK (TO-252) surface-mount package with exposed cathode tab for thermal and electrical connection. Pin 1 is Anode, Pin 2 is Cathode (tab), Pin 3 is Gate.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Main current entry terminal during forward conduction | Connected to AC line or high-side load; must withstand full VDRM and IT(RMS) stress. |
| Cathode (Pin 2 / Tab) | Main current exit terminal and thermal path | Exposed metal tab serves as primary heat sink interface and common reference for gate drive. |
| Gate (Pin 3) | Control input for initiating conduction | Receives low-energy pulse (≤15 mA, ≤1.3 V) referenced to cathode to trigger latching action. |
Key Features
| Feature | Design Value |
|---|---|
| High dV/dt immunity | 200 V/µs minimum at 125 °C prevents false triggering in noisy AC environments. |
| Low on-state voltage | VTM ≤ 1.6 V at 24 A ensures <2.5 W conduction loss at full RMS current. |
| Robust surge capability | 115 A non-repetitive surge (8.3 ms) supports motor startup and capacitor charging transients. |
| ECOPACK® compliant | Lead-free, halogen-free molding compound meets RoHS and JEDEC J-STD-020 reflow requirements. |
| DPAK thermal efficiency | Rth(j-c) = 1.3 °C/W enables >10 W power dissipation with minimal heatsink area. |
Applications
| Overvoltage Crowbar Protection | Power Tool Motor Control |
|---|---|
|
Use Scenario: Fast-acting short-circuit activation across DC bus when overvoltage exceeds safe threshold. IC Role / Device Role / Timing Role: Latching SCR acting as crowbar switch triggered by voltage monitor comparator output. Use Value: Responds within microseconds to clamp bus voltage, protecting downstream MOSFETs and controllers from destructive transients. |
Use Scenario: Phase-angle controlled speed regulation in universal motor-driven drills and saws. IC Role / Device Role / Timing Role: Main AC switching element in single-phase bridge or half-wave configuration, gated synchronously with zero-crossing detection. Use Value: Delivers precise torque control with 12 A RMS rating matching typical tool motor demands while maintaining thermal stability in compact DPAK layout. |
| Kitchen Appliance Heating Control | Inrush Current Limiting |
|
Use Scenario: Duty-cycle modulated heating element control in induction cooktops and rice cookers. IC Role / Device Role / Timing Role: Line-synchronized AC switch enabling burst-fire or phase-control operation of resistive heating coils. Use Value: Handles 12 A RMS continuously at elevated ambient temperatures inside sealed appliance enclosures due to low Rth(j-c) and 150 °C max junction rating. |
Use Scenario: Controlled turn-on of large bulk capacitors in SMPS front-ends to limit peak inrush current. IC Role / Device Role / Timing Role: Soft-start switch bypassed after capacitor charging completes, triggered by timed gate pulse. Use Value: Withstands 115 A surge (8.3 ms) during initial charge while limiting peak current to <15 A using series NTC + SCR timing coordination. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TYN812TRG | Same 800 V VDRM, 12 A IT(RMS), but TO-220AB through-hole package; IGT = 15 mA; Rth(j-c) = 1.3 °C/W identical. | Requires drilled PCB and mechanical mounting; better suited for prototyping or high-vibration environments where surface-mount reliability is constrained. | Select when board-level shock/vibration tolerance or manual repairability outweighs space and assembly cost advantages of DPAK. |
| TN1215-800G-TR | Same electrical specs, but D²PAK (TO-263) package; Rth(j-c) = 1.3 °C/W; higher thermal mass and 1.5 g weight vs. 0.3 g for DPAK. | Better thermal handling for sustained >10 W dissipation; requires larger pad area and heavier copper pour than DPAK. | Select when operating near thermal limits at high ambient temperature (>70 °C) and PCB real estate permits larger footprint. |
Compared with TYN812TRG and TN1215-800G-TR, the TN1215-800B-TR offers optimal balance of automated assembly compatibility, thermal performance, and board space efficiency for high-volume consumer power electronics where DPAK footprint and tape-and-reel delivery are production requirements.
Availability
TN1215-800B-TR is available at Aetrix Electronics and suitable for overvoltage crowbar protection, power tool motor control, and kitchen appliance heating circuits requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for TN1215-800B-TR 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, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
The TN1215 series belongs to ST's standard SCR product line, engineered specifically for cost-sensitive, high-reliability AC power control in white goods, power tools, and industrial equipment where robustness, thermal efficiency, and regulatory compliance are mandatory.
FAQ
What is the maximum junction temperature for continuous operation?
The TN1215-800B-TR has a rated operating junction temperature range of –40 °C to +125 °C. Continuous operation at Tj = 125 °C is permitted only when case temperature (Tc) is maintained at ≤110 °C per the IT(RMS) derating curve in Figure 2 of the datasheet, requiring adequate heatsinking via the DPAK tab.
Can this SCR be used in DC circuits?
No - the TN1215-800B-TR is a half-wave, line-commutated SCR designed for AC applications. It cannot sustain conduction in pure DC because it lacks forced commutation capability; once triggered, it remains latched until anode current drops below holding current (IH ≤ 40 mA), which does not occur in steady-state DC.
Is a snubber circuit required for inductive loads?
Yes - for inductive loads such as motors or transformers, a series RC snubber (e.g., 100 Ω + 100 nF) across anode–cathode is recommended to suppress dV/dt transients during turn-off and prevent false re-triggering, especially given its 200 V/µs dV/dt rating at 125 °C.
What is the gate drive requirement for reliable triggering?
A minimum gate trigger current of 2 mA and maximum of 15 mA is specified at VD = 12 V and RL = 33 Ω. For robust operation across temperature and unit variation, a 20 mA, 20 µs pulse with <100 ns rise time is recommended, referenced directly to cathode to avoid ground-loop noise coupling.
TN1215-800B-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tube
- Product Status:
- Active
- Voltage - Off State:
- 800 V
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Gate Trigger (Igt) (Max):
- 15 mA
- Voltage - On State (Vtm) (Max):
- 1.6 V
- Current - On State (It (AV)) (Max):
- 8 A
- Current - On State (It (RMS)) (Max):
- 12 A
- Current - Hold (Ih) (Max):
- 40 mA
- Current - Off State (Max):
- 5 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 110A, 115A
- SCR Type:
- Standard Recovery
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
TN1215-800B-TR FAQ
1.How can I place an order for TN1215-800B-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for TN1215-800B-TR 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 TN1215-800B-TR reliable?
The price and inventory of TN1215-800B-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TN1215-800B-TR is usually 5 days.
3.What payment methods are accepted for TN1215-800B-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TN1215-800B-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TN1215-800B-TR?
TN1215-800B-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TN1215-800B-TR 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 TN1215-800B-TR?
For technical support, including TN1215-800B-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TN1215-800B-TR requirements.
6.How does Aetrix verify that TN1215-800B-TR is sourced from the original manufacturer or authorized distributors?
All TN1215-800B-TR 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 TN1215-800B-TR meets industry standards.
7.What is the process for return or replacement of TN1215-800B-TR?
All TN1215-800B-TR units undergo pre-shipment inspection (PSI). If there is an issue with TN1215-800B-TR, 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 TN1215-800B-TR part is unused and in its original packaging.
Return procedure for TN1215-800B-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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