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STMicroelectronics TS110-8A2-AP
- Part No.:
- TS110-8A2-AP
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
TS110-8A2-AP.pdf
- Description:
- SCR 800V 1.25A TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:157
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Product details
Overview
TS110-8A2-AP from STMicroelectronics is a sensitive gate SCR designed for solid-state circuit breaker protection in GFCI, AFCI, and RCBO applications. It delivers 1.25 A RMS on-state current, 800 V repetitive peak off-state voltage (VDRM/VRRM), 1250 V non-repetitive direct surge voltage, and ultra-low 100 µA triggering gate current (IGT) at 25 °C - enabling reliable turn-on with minimal drive energy.
For engineers reviewing the TS110-8A2-AP datasheet, TS110-8A2-AP pinout, TS110-8A2-AP application, or TS110-8A2-AP equivalent, this device is selected specifically for high dV/dt immunity (200 V/µs), low leakage (<1 µA at 25 °C), self-protecting overvoltage crowbar behavior per IEC 61000-4-5, and TO-92 KGA pinout compatibility in space-constrained breaker modules.
Technical Context
This SCR operates as a latching, bidirectional thyristor with asymmetric trigger sensitivity optimized for AC line monitoring and fast crowbar action during transient overvoltages. Its 200 V/µs off-state immunity prevents false triggering under electrical fast transients, while its 1250 V non-repetitive surge rating enables safe clamping of IEC 61000-4-5-compliant 1.2/50 µs surges without external snubbers.
The device uses standard SCR physics but integrates process-level enhancements for reduced IGT and improved thermal stability up to 125 °C junction temperature. Gate-cathode resistance (RGK = 220 Ω) and 140 Ω load conditions define its guaranteed turn-on behavior, and its 220 mΩ dynamic on-state resistance minimizes conduction losses during fault-current diversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 1.25 A - Sustained load current handling capability at TL = 53 °C in TO-92 package |
| VDRM / VRRM | 800 V - Maximum continuous AC blocking voltage across anode–cathode in both directions |
| VDSM / VRSM | 1250 V / 900 V - Peak non-repetitive surge withstand capability for direct/reverse polarity transients |
| IGT (Q1) | 100 µA max - Minimum gate current required to reliably trigger conduction at 25 °C |
| dV/dt immunity | 200 V/µs min - Guaranteed immunity to rapid voltage transients without spurious turn-on |
| VTM / VTO | 1.6 V max / 0.95 V max - On-state voltage drop at 2.5 A and 125 °C, defining conduction loss and self-heating |
| IDRM / IRRM | 1 µA max at 25 °C - Off-state leakage current, critical for low-power standby operation in breakers |
Pinout & Package
TS110-8A2-AP is supplied in a through-hole TO-92 package with "KGA" pinout: Pin 1 = Cathode (K), Pin 2 = Gate (G), Pin 3 = Anode (A). This configuration supports standard PCB layout for gate-driven crowbar circuits where gate drive originates near the cathode reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (K) | Cathode | Main current return path; referenced ground for gate drive and sensing in most breaker topologies |
| Pin 2 (G) | Gate | Low-energy trigger input; requires ≤100 µA to initiate latching conduction under defined RGK and load conditions |
| Pin 3 (A) | Anode | High-side AC line connection point; carries full fault current during crowbar activation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-sensitive gate triggering | 100 µA IGT enables use with high-impedance, low-power detection ICs in GFCI/AFCI controllers |
| Self-protecting overvoltage crowbar | Switches to on-state during >800 V transients (e.g., IEC 61000-4-5), diverting surge energy through load |
| High dV/dt immunity | 200 V/µs minimum ensures no false tripping during EFT events on mains-connected breaker inputs |
| Low leakage current | <1 µA at 25 °C reduces standby power consumption and improves long-term reliability in sealed enclosures |
| ECOPACK2 compliance | Lead-free plating and halogen-free molding compound meet RoHS and REACH environmental requirements |
Applications
| GFCI Circuit Protection | AFCI Arc Detection |
|---|---|
Use Scenario: Ground-fault detection in residential outlets and portable RCDs, where leakage currents ≥5 mA must trip within 25 ms. IC Role / Device Role / Timing Role: Crowbar switch triggered by comparator output; conducts fault current to force upstream breaker trip. Use Value: 100 µA IGT allows direct drive from low-power op-amp comparators without buffer stages, reducing BOM count and board area. |
Use Scenario: Detection of high-frequency arc signatures in branch circuits, followed by fast isolation of faulty segments. IC Role / Device Role / Timing Role: High-speed crowbar element activated by digital signal processor (DSP) or dedicated arc-detection ASIC output. Use Value: 200 V/µs dV/dt immunity prevents nuisance tripping during normal switching noise from dimmers or motors. |
| RCBO Integrated Protection | AFDD Surge Coordination |
Use Scenario: Combined residual-current and overload protection in DIN-rail mounted circuit breakers for commercial buildings. IC Role / Device Role / Timing Role: Primary fault-current shunt during ground or arc faults; works in tandem with thermal-magnetic trip unit. Use Value: 1250 V VDSM rating enables coordination with upstream Type II SPDs, eliminating need for additional MOV clamping. |
Use Scenario: Secondary surge suppression stage in AFDDs that must survive repeated 1.2/50 µs line surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Self-resetting crowbar that recovers blocking capability after zero-crossing post-surge. Use Value: Demonstrated survivability across ≥10 non-repetitive 1250 V surges, extending product lifetime beyond standard SCRs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR-based circuit breaker applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST T1035-800B | Higher IGT (35 mA), higher VDRM (800 V), TO-220 package, 16 A ITSM | Designed for higher-power industrial breakers; requires active gate drive and heatsinking | Select when higher surge current (16 A vs. 20 A single-pulse) and thermal margin are needed; not suitable for low-power GFCI. |
| Littelfuse S4006L | Standard sensitivity (50 mA IGT), same VDRM (800 V), TO-92, 6 A ITSM | Lacks crowbar-rated surge capability (VDSM = 1000 V); no dV/dt guarantee above 50 V/µs | Acceptable for basic overcurrent protection only; unsuitable for IEC 61000-4-5-compliant surge environments. |
Compared with T1035-800B and S4006L, TS110-8A2-AP uniquely balances ultra-low gate drive, certified crowbar surge response, and compact TO-92 KGA layout - making it the only option qualified for space- and power-constrained GFCI/AFCI modules requiring <100 µA trigger thresholds and 1250 V transient resilience.
Availability
TS110-8A2-AP is available at Aetrix Electronics and suitable for GFCI outlet designs, AFCI branch monitors, and RCBO integrated protection modules requiring stable component supply, long-lifecycle support, and ECOPACK2-compliant sourcing.
Supply support for TS110-8A2-AP 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, specializing in power management, analog, microcontrollers, and automotive-grade components.
The TS110 series belongs to ST's high-reliability SCR portfolio engineered specifically for solid-state circuit interruption - emphasizing low IGT, high surge tolerance, and robust dV/dt immunity in safety-critical AC protection systems.
FAQ
What is the maximum junction temperature for continuous operation?
The TS110-8A2-AP has a rated operating junction temperature range of –40 °C to +125 °C. Continuous operation at 125 °C is permitted when lead temperature (TL) is maintained at ≤53 °C for the TO-92 package, as specified in Absolute Ratings Table 1. Derating applies above this lead temperature.
Does TS110-8A2-AP require a gate resistor, and what value is recommended?
Yes - a 220 Ω gate-to-cathode resistor (RGK) is specified in all key electrical tests (e.g., IGT, dV/dt, VGD) and is required to ensure stable triggering and prevent false turn-on. This value balances gate sensitivity with noise immunity and is validated per DS10422 test conditions.
Can TS110-8A2-AP replace mechanical relays in breaker trip circuits?
No - it is not a relay replacement. TS110-8A2-AP functions as a crowbar switch that diverts fault current to trigger upstream magnetic trip mechanisms or auxiliary solenoids. It does not isolate circuits like a relay; instead, it enables faster, solid-state fault initiation while relying on mechanical elements for final disconnection.
Is the TO-92 "KGA" pinout compatible with standard PCB footprints for other ST SCRs?
Yes - the KGA pinout (Pin 1 = K, Pin 2 = G, Pin 3 = A) matches ST's standardized TO-92 footprint for sensitive-gate SCRs including TS108 and TS112 series. Footprint dimensions align with JEDEC TO-92 outline (EIAJ ED-7410), ensuring mechanical and solder-reflow compatibility.
TS110-8A2-AP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Voltage - Off State:
- 800 V
- Voltage - Gate Trigger (Vgt) (Max):
- 800 mV
- Current - Gate Trigger (Igt) (Max):
- 100 µA
- Voltage - On State (Vtm) (Max):
- 1.6 V
- Current - On State (It (AV)) (Max):
- 800 mA
- Current - On State (It (RMS)) (Max):
- 1.25 A
- Current - Hold (Ih) (Max):
- 12 mA
- Current - Off State (Max):
- 1 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 20A, 21A
- SCR Type:
- Sensitive Gate
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
TS110-8A2-AP FAQ
1.How can I place an order for TS110-8A2-AP through Aetrix?
Please submit a Request for Quotation (RFQ) for TS110-8A2-AP 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 TS110-8A2-AP reliable?
The price and inventory of TS110-8A2-AP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS110-8A2-AP is usually 5 days.
3.What payment methods are accepted for TS110-8A2-AP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS110-8A2-AP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS110-8A2-AP?
TS110-8A2-AP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS110-8A2-AP 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 TS110-8A2-AP?
For technical support, including TS110-8A2-AP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS110-8A2-AP requirements.
6.How does Aetrix verify that TS110-8A2-AP is sourced from the original manufacturer or authorized distributors?
All TS110-8A2-AP 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 TS110-8A2-AP meets industry standards.
7.What is the process for return or replacement of TS110-8A2-AP?
All TS110-8A2-AP units undergo pre-shipment inspection (PSI). If there is an issue with TS110-8A2-AP, 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 TS110-8A2-AP part is unused and in its original packaging.
Return procedure for TS110-8A2-AP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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