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STMicroelectronics TS820-700T
- Part No.:
- TS820-700T
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-220-3
- Datasheet:
-
TS820-700T.pdf
- Description:
- SCR 700V 8A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,700
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Product details
Overview
TS820-700T from STMicroelectronics is a sensitive-gate 8 A, 700 V RMS silicon-controlled rectifier (SCR) in TO-220AB package, rated for 8 A RMS on-state current at TC = 110 °C and 5 A average on-state current, with ultra-low 200 µA max gate trigger current (IGT) at 12 V and 140 Ω load, used in overvoltage crowbar protection circuits for industrial power supplies.
For engineers reviewing the TS820-700T datasheet, TS820-700T pinout, TS820-700T application, or TS820-700T equivalent, this device supports precise low-power gate drive, high dV/dt immunity (≥5 V/µs at Tj = 125 °C), and robust surge handling (70 A non-repetitive peak on-state current at tp = 10 ms) in compact through-hole SCR designs.
Technical Context
This SCR operates as a unidirectional latching switch triggered by a low-energy gate pulse, with sensitive gate structure enabling reliable turn-on from microcontroller GPIOs without external amplification. Its 700 V repetitive peak off-state voltage (VDRM/VRRM) and 5 V/µs minimum dV/dt immunity at 125 °C ensure stable blocking in noisy AC line environments.
Thermal performance is defined by 1.3 °C/W junction-to-case thermal resistance (Rth(j-c)) in TO-220AB, supporting 8 A RMS conduction at 110 °C case temperature. The device features 0.85 V maximum threshold voltage (Vt0) and 46 mΩ dynamic resistance (Rd) at 125 °C, minimizing conduction losses in motor control and regulation circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 8 A RMS on-state current at TC = 110 °C - supports continuous 8 A load current with adequate heatsinking |
| VDRM / VRRM | 700 V repetitive peak off-state voltage - blocks up to 700 V AC line transients in 230 VAC systems |
| IGT (max) | 200 µA at VD = 12 V, RL = 140 Ω - enables direct drive from low-power MCU outputs |
| dV/dt (min) | 5 V/µs at Tj = 125 °C - resists false triggering from fast-rising noise in industrial EMI environments |
| ITSM (tp = 10 ms) | 70 A non-repetitive surge current - withstands inrush surges in motor startup and capacitor charging |
| VTM (ITM = 16 A) | 1.6 V max forward voltage drop - limits conduction loss to ≤25.6 W at 16 A peak |
| Rth(j-c) | 1.3 °C/W junction-to-case - requires minimal heatsink for 8 A operation at 110 °C case temperature |
Pinout & Package
TS820-700T uses the TO-220AB package: insulated tab, 3-pin through-hole, 2.3 g mass, 0.55 N·m recommended mounting torque. Pin 1 = Anode, Pin 2 = Cathode, Pin 3 = Gate - standard configuration for single-phase AC switching with isolated heatsink mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Main current entry terminal | Connects to AC line or DC bus positive; carries full load current; electrically isolated from tab |
| Cathode (Pin 2) | Main current exit terminal | Connects to load return path; referenced for gate drive; common reference for control circuitry |
| Gate (Pin 3) | Trigger control input | Accepts low-current pulse (≤200 µA) to initiate conduction; requires no sustained drive after turn-on |
Key Features
| Feature | Design Value |
|---|---|
| Sensitive gate triggering | 200 µA max IGT enables direct MCU GPIO drive without buffer stage, reducing BOM count and PCB area |
| High surge robustness | 70 A ITSM (10 ms) supports repeated inrush events in power tool motor controllers without degradation |
| Stable high-temperature operation | Rated for 125 °C junction temperature with validated dV/dt and IGT performance up to 140 °C |
| Low conduction loss | 1.6 V VTM at 16 A and 46 mΩ Rd minimize power dissipation in 8 A continuous applications |
| ECOPACK-compliant packaging | Halogen-free molding compound and lead-free plating meet RoHS and REACH environmental requirements |
Applications
| Overvoltage Crowbar Protection | Power Tool Motor Control |
|---|---|
|
Use Scenario: Fast-acting short-circuit activation when regulated DC output exceeds safe threshold in SMPS. IC Role / Device Role / Timing Role: Latching crowbar switch triggered by comparator output; conducts indefinitely until AC input is cycled. Use Value: 200 µA IGT allows direct interface with voltage monitor ICs; 700 V VDRM ensures reliability across 230 VAC ±15% mains variations. |
Use Scenario: Phase-angle controlled speed regulation in universal motor-driven drills and sanders. IC Role / Device Role / Timing Role: Main AC switching element synchronized to zero-crossing detection for smooth torque delivery. Use Value: 5 V/µs dV/dt immunity prevents false triggering from brush-commutation noise; 8 A IT(RMS) sustains peak motor loads. |
| Inrush Current Limiting | Capacitive Discharge Ignition (CDI) |
|
Use Scenario: Controlled turn-on of bulk capacitors during power-up to limit peak input current in industrial HMIs. IC Role / Device Role / Timing Role: Delayed conduction SCR placed in series with NTC bypass path; triggered after thermistor cools. Use Value: 70 A ITSM handles 10 ms inrush surges; 0.85 V Vt0 ensures predictable turn-on timing independent of temperature drift. |
Use Scenario: High-voltage pulse generation for spark plug ignition in small gasoline engines (lawnmowers, generators). IC Role / Device Role / Timing Role: Primary discharge switch releasing stored energy from HV capacitor into ignition coil primary winding. Use Value: 700 V VDRM safely isolates 400–600 V charge voltage; 1.6 V VTM minimizes energy loss during rapid discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS820-600T | 600 V VDRM/VRRM (vs. 700 V); identical IGT (200 µA), IT(RMS) (8 A), and TO-220AB package | Limited to 230 VAC systems with lower transient margin; unsuitable for 400 VDC bus protection | Select only if design operates below 500 V peak and cost sensitivity outweighs voltage headroom needs |
| TYN608RG | Standard-gate (15 mA IGT), 600 V rating, same TO-220AB package and 8 A IT(RMS) | Requires gate driver circuitry; higher dV/dt immunity (150 V/µs) but less suitable for low-power MCU control | Prefer where high-noise environments dominate and gate drive capability is available |
Compared with TS820-600T, the -700T adds 100 V blocking margin critical for 230 VAC surge compliance; versus TYN608RG, it trades gate drive simplicity and low IGT for reduced dV/dt tolerance-making it optimal for MCU-driven crowbar and phase-control where voltage headroom matters most.
Availability
TS820-700T is available at Aetrix Electronics and suitable for overvoltage crowbar protection, power tool motor control, and inrush current limiting applications requiring stable component supply, long-term industrial lifecycle support, and traceable sourcing.
Supply support for TS820-700T 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 analog, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
TS820 belongs to ST's high-reliability SCR product line, engineered specifically for robust AC power control in harsh industrial environments where gate sensitivity, surge resilience, and thermal stability are critical.
FAQ
What is the maximum junction temperature for TS820-700T?
The TS820-700T has an operating junction temperature range of –40 °C to +125 °C, with storage temperature extending to +150 °C. Thermal derating begins above 125 °C, and the device must be mounted with proper heatsinking to maintain TJ ≤ 125 °C under 8 A RMS load conditions.
Can TS820-700T replace TS820-600T in existing designs?
Yes, TS820-700T is pin-compatible and functionally identical to TS820-600T except for its higher 700 V VDRM/VRRM rating. No layout or drive circuit changes are needed, and it provides improved surge margin in 230 VAC applications-though system-level validation of blocking behavior under worst-case transients is recommended.
Does TS820-700T require a snubber circuit?
A snubber is not mandatory but recommended for inductive loads or high-dV/dt environments exceeding 5 V/µs. With its 5 V/µs minimum dV/dt immunity at 125 °C, the device can operate snubberless in resistive or lightly inductive crowbar applications-but RC snubbers improve reliability in motor control and transformer-coupled circuits.
What is the gate-cathode leakage specification for TS820-700T?
TS820-700T specifies VRG ≥ 8 V (minimum peak reverse gate voltage) and VGD ≥ 0.1 V (minimum gate-to-cathode off-state voltage) at Tj = 125 °C. Gate-cathode leakage (IRG) is not explicitly specified, but typical IRG remains below 10 µA at 5 V reverse bias per characterization curves in DS2118 Rev 9.
TS820-700T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Voltage - Off State:
- 700 V
- Voltage - Gate Trigger (Vgt) (Max):
- 800 mV
- Current - Gate Trigger (Igt) (Max):
- 200 µA
- Voltage - On State (Vtm) (Max):
- 1.6 V
- Current - On State (It (AV)) (Max):
- 5 A
- Current - On State (It (RMS)) (Max):
- 8 A
- Current - Hold (Ih) (Max):
- 5 mA
- Current - Off State (Max):
- 5 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 70A, 73A
- SCR Type:
- Sensitive Gate
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220
TS820-700T FAQ
1.How can I place an order for TS820-700T through Aetrix?
Please submit a Request for Quotation (RFQ) for TS820-700T 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 TS820-700T reliable?
The price and inventory of TS820-700T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS820-700T is usually 5 days.
3.What payment methods are accepted for TS820-700T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS820-700T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS820-700T?
TS820-700T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS820-700T 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 TS820-700T?
For technical support, including TS820-700T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS820-700T requirements.
6.How does Aetrix verify that TS820-700T is sourced from the original manufacturer or authorized distributors?
All TS820-700T 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 TS820-700T meets industry standards.
7.What is the process for return or replacement of TS820-700T?
All TS820-700T units undergo pre-shipment inspection (PSI). If there is an issue with TS820-700T, 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 TS820-700T part is unused and in its original packaging.
Return procedure for TS820-700T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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