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STMicroelectronics TS110-8A1-AP
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- Part No.:
- TS110-8A1-AP
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
TS110-8A1-AP.pdf
- Description:
- SCR 800V 1.25A TO92
- Quantity:
- Payment:
- Shipping:
Inventory:5,805
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Product details
Overview
TS110-8A1-AP from STMicroelectronics is a sensitive gate silicon-controlled rectifier (SCR) designed for high-reliability circuit breaker protection. It delivers 1.25 A RMS on-state current, 800 V repetitive peak off-state voltage, and 1250 V non-repetitive direct surge voltage in a TO-92 package with GAK pinout. Its 100 µA max trigger gate current and 200 V/µs off-state immunity enable robust operation in ground fault and arc fault interrupters.
For engineers reviewing the TS110-8A1-AP datasheet, TS110-8A1-AP pinout, TS110-8A1-AP application, or TS110-8A1-AP equivalent, key selection criteria include low IGT for limited-drive circuits, high dV/dt immunity to prevent false triggering during EFT events, surge ruggedness per IEC 61000-4-5, and thermal performance in TO-92 at TL = 53 °C.
Technical Context
This SCR employs overvoltage crowbar technology to self-protect against AC line surges: when VD exceeds 1250 V (VDSM), it latches on within <10 ms to safely divert energy through the load. Its sensitive gate (IGT ≤ 100 µA) allows direct drive from low-power comparators or microcontrollers without external amplification.
The device operates across –40 °C to +125 °C junction temperature, with 220 mΩ dynamic on-resistance and 1.6 V max on-state voltage at 2.5 A. Its 200 V/µs dV/dt rating-guaranteed at Tj = 125 °C-ensures immunity to fast transients in noisy mains environments typical of RCD and RCBO designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 1.25 A RMS on-state current at TL = 53 °C - defines continuous load-handling capability in TO-92 mounting |
| VDRM / VRRM | 800 V repetitive peak off-state voltage - sets maximum steady-state AC blocking rating for 50/60 Hz mains |
| VDSM / VRSM | 1250 V / 900 V non-repetitive surge ratings - enables IEC 61000-4-5 compliant overvoltage protection |
| IGT (Q1) | ≤100 µA max gate trigger current - permits direct interface with low-current sensing circuits in GFCI/AFCI ICs |
| dV/dt immunity | ≥200 V/µs at Tj = 125 °C - prevents spurious turn-on during electrical fast transients on live conductors |
| Rth(j-l) | 65 °C/W junction-to-lead thermal resistance - determines safe power dissipation limit under conduction in TO-92 |
| IDRM / IRRM | ≤100 µA leakage at Tj = 125 °C - minimizes standby power loss over lifetime in always-connected breakers |
Pinout & Package
TS110-8A1-AP is supplied in a lead-free, halogen-free TO-92 package (ECOPACK2 compliant) with GAK pinout: Pin 1 = Gate, Pin 2 = Anode, Pin 3 = Cathode. Mechanical dimensions conform to ST's standard TO-92 outline (A = 1.35 mm, E = 12.70 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (G) | Gate | Low-threshold control input; triggers conduction with ≤100 µA at 12 V, enabling direct drive from comparator outputs |
| Pin 2 (A) | Anode | Main current entry terminal; connects to line side in series-breaker topology; rated for 1250 V surge |
| Pin 3 (K) | Cathode | Main current exit terminal; ties to load side; forms reference for gate drive and sensing circuits |
Key Features
| Feature | Design Value |
|---|---|
| Self-protecting overvoltage crowbar | Switches on within <10 ms at VD ≥ VDSM (1250 V) to shunt surge energy-no external crowbar circuit needed |
| High dV/dt immunity | 200 V/µs minimum at 125 °C ensures reliable non-tripping during EFT bursts per IEC 61000-4-4 |
| Ultra-low gate trigger current | 100 µA max enables integration with low-power trip logic (e.g., op-amp comparators) without gate buffers |
| Low leakage current | 100 µA max at 125 °C reduces cumulative standby power loss in always-energized RCD modules |
| ECOPACK2 compliance | Lead-free plating and halogen-free molding compound meet RoHS and REACH environmental requirements |
Applications
| GFCI (Ground Fault Circuit Interrupter) | AFCI (Arc Fault Circuit Interrupter) |
|---|---|
Use Scenario: Detects >5 mA differential current between line and neutral to prevent electric shock in residential outlets. IC Role / Device Role / Timing Role: SCR acts as main disconnect switch triggered by analog comparator output upon fault detection. Use Value: 100 µA IGT allows direct drive from low-power comparator stages; 1250 V VDSM withstands lightning-induced surges on branch circuits. |
Use Scenario: Monitors high-frequency current signatures to identify dangerous parallel/series arcs in branch wiring. IC Role / Device Role / Timing Role: SCR serves as fast-acting main pole disconnect activated by digital signal processor (DSP) fault decision. Use Value: 200 V/µs dV/dt immunity prevents nuisance tripping during arc-generated transients; TO-92 footprint simplifies PCB layout in compact breakers. |
| RCBO (Residual Current Circuit Breaker with Overload) | AFDD (Arc Fault Detection Device) |
Use Scenario: Combines residual current protection (30 mA) with thermal-magnetic overload tripping in DIN-rail mounted panels. IC Role / Device Role / Timing Role: SCR provides solid-state main contact function, replacing electromechanical contacts for faster response. Use Value: 1.25 A IT(RMS) supports continuous 16 A breaker rating with derating; 65 °C/W Rth(j-l) enables thermal management via PCB copper pour. |
Use Scenario: Standalone device installed upstream of outlets to detect and interrupt arc faults before fire ignition. IC Role / Device Role / Timing Role: SCR executes final isolation after AFDD controller confirms persistent arc signature. Use Value: Self-crowbar action eliminates need for separate MOV+SCR clamp network; SMBflat-3L variant available for surface-mount variants. |
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's TS110-8A2 | Same die, KGA pinout (Pin 1 = Cathode, Pin 2 = Gate, Pin 3 = Anode) | Requires PCB layout revision; gate drive referenced to cathode instead of anode | Select when existing design uses KGA routing or requires cathode-referenced gate control |
| Littelfuse S4006L | Higher IGT (500 µA), lower VDRM (600 V), no specified VDSM rating | Lacks documented IEC 61000-4-5 surge ruggedness; requires external crowbar components | Use only in cost-sensitive, non-surge-critical applications where gate drive margin is ample |
Compared with TS110-8A1-AP, TS110-8A2 offers identical electrical performance but demands pinout-aware layout changes, while S4006L trades sensitivity and surge robustness for broader availability-making TS110-8A1-AP optimal for high-integrity GFCI/AFCI designs requiring guaranteed crowbar behavior.
Availability
TS110-8A1-AP is available at Aetrix Electronics and suitable for GFCI, AFCI, and RCBO applications requiring stable component supply, long-term lifecycle support, and traceable ECOPACK2-compliant sourcing.
Supply support for TS110-8A1-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, designing and manufacturing products for automotive, industrial, and power management markets.
The TS110-8 series belongs to ST's high-reliability protection SCR product line, engineered specifically for solid-state trip mechanisms in residual current and arc fault circuit breakers where sensitivity, surge tolerance, and long-term stability are critical.
FAQ
What is the maximum allowable gate-cathode resistance for reliable triggering?
The datasheet specifies that IGT remains ≤100 µA with RGK = 220 Ω at 12 V and 25 °C. Using higher resistance increases required VGT and risks failure to trigger at elevated temperatures; ST recommends RGK ≤ 220 Ω for guaranteed operation across –40 °C to +125 °C.
Can TS110-8A1-AP replace mechanical contacts in a 16 A RCBO?
Yes-its 1.25 A RMS rating applies to TO-92 at TL = 53 °C, but in RCBOs it operates intermittently during faults. With proper heatsinking (e.g., 2 cm² copper pour), it handles repeated 20 A/10 ms surges per IEC 61000-4-5, making it suitable as the primary disconnect element in 16 A designs.
Does the device require a snubber network for 230 V AC operation?
No snubber is required for normal blocking operation due to its 200 V/µs dV/dt rating. However, a small RC snubber (e.g., 100 Ω + 100 pF) is recommended across A–K when switching inductive loads to suppress commutation dv/dt during turn-off and prevent false re-triggering.
How does the crowbar action affect system reset after a surge event?
After crowbar activation, the SCR remains latched until current falls below holding current (IH ≤ 12 mA) at the next AC zero-crossing. The device then fully recovers blocking capability-no manual or electronic reset is needed, enabling automatic post-surge resumption of protection function.
TS110-8A1-AP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- 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:
- -
TS110-8A1-AP FAQ
1.How can I place an order for TS110-8A1-AP through Aetrix?
Please submit a Request for Quotation (RFQ) for TS110-8A1-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 TS110-8A1-AP reliable?
The price and inventory of TS110-8A1-AP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS110-8A1-AP is usually 5 days.
3.What payment methods are accepted for TS110-8A1-AP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS110-8A1-AP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS110-8A1-AP?
TS110-8A1-AP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS110-8A1-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 TS110-8A1-AP?
For technical support, including TS110-8A1-AP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS110-8A1-AP requirements.
6.How does Aetrix verify that TS110-8A1-AP is sourced from the original manufacturer or authorized distributors?
All TS110-8A1-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 TS110-8A1-AP meets industry standards.
7.What is the process for return or replacement of TS110-8A1-AP?
All TS110-8A1-AP units undergo pre-shipment inspection (PSI). If there is an issue with TS110-8A1-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 TS110-8A1-AP part is unused and in its original packaging.
Return procedure for TS110-8A1-AP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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