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STMicroelectronics TS110-7A1-AP
- Part No.:
- TS110-7A1-AP
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
TS110-7A1-AP.pdf
- Description:
- SCR 700V 1.25A TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,998
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Product details
Overview
TS110-7A1-AP from STMicroelectronics is a highly sensitive, 700 V repetitive peak off-state voltage silicon-controlled rectifier (SCR) in TO-92 package with GAK pinout, rated for 1.25 A RMS on-state current and 100 µA maximum gate trigger current (IGT). It enables reliable crowbar protection in ground fault and arc fault circuit interrupters where gate drive current is severely limited. Its low leakage current (<1 µA at 25 °C) and robust surge capability (1250 V non-repetitive direct surge) support long-life, high-reliability operation in safety-critical breaker modules.
For engineers reviewing the TS110-7A1-AP datasheet, TS110-7A1-AP pinout, TS110-7A1-AP application, or TS110-7A1-AP equivalent, key selection criteria include ultra-low IGT (≤100 µA), self-protecting overvoltage ruggedness per IEC 61000-4-5, thermal resistance (Rth(j-l) = 14 °C/W), forward voltage drop (VTM ≤ 1.4 V @ 2.5 A), and compatibility with GFCI/AFCI/RCBO control topologies requiring fail-safe crowbar action.
Technical Context
This SCR employs a planar passivated junction structure optimized for high dV/dt immunity (≥15 V/µs at 125 °C) and stable triggering under low-current gate drive. Its gate sensitivity is validated across –40 to +125 °C junction temperature range, with IGT guaranteed ≤100 µA at 25 °C and ≤1 µA minimum at 5% of max rating.
The device implements overvoltage crowbar protection by latching into conduction during transient surges (e.g., IEC 61000-4-5 line spikes), dissipating energy through the load while limiting peak current via external impedance. Recovery occurs automatically after zero-crossing, with ≥10 repeatable surge cycles verified.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 1.25 A - Sustained conduction capability at TL = 58 °C in TO-92, enabling compact thermal design in space-constrained GFCI PCBs |
| VDRM / VRRM | 700 V - Blocking voltage rating for 50/60 Hz AC mains isolation in residual current devices |
| IGT (Q1) | 100 µA max - Ultra-low gate trigger current allows direct drive from low-power comparators or microcontroller GPIOs without amplification |
| VTM | ≤1.4 V @ 2.5 A - Low on-state voltage minimizes power loss and self-heating during crowbar activation |
| IDRM / IRRM | ≤1 µA @ 25 °C - Negligible leakage ensures minimal standby power consumption over decades of RCD service life |
| dV/dt | ≥15 V/µs @ 125 °C - Immunity to false triggering from fast transients in noisy industrial or appliance environments |
| Rth(j-l) | 14 °C/W - Junction-to-lead thermal resistance supports reliable operation without heatsink in TO-92 mounting |
Pinout & Package
TS110-7A1-AP is supplied in lead-free, halogen-free TO-92 package (ECOPACK® compliant) with axial leads and standardized GAK terminal configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G | Gate | Low-impedance control input; triggers conduction when IGT ≥ 1 µA (min) with VD = 12 V, RL = 140 Ω |
| A | Anode | Main current entry terminal; blocks up to 700 V reverse or forward until triggered |
| K | Cathode | Main current exit terminal; referenced for gate drive and defines polarity of triggering sensitivity |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low IGT | Guaranteed ≤100 µA max at 25 °C, enabling direct interface with low-power sensing circuits in GFCI trip logic |
| Self-protecting crowbar | Automatically latches on during >700 V transients (e.g., IEC 61000-4-5), diverting surge energy safely through load |
| High surge ruggedness | Withstands 1250 V non-repetitive direct surge (tp = 50 µs) and recovers blocking capability post-zero-crossing |
| Low leakage current | ≤1 µA at 25 °C ensures <1 mW standby dissipation in always-on RCD monitoring paths |
| Wide temperature range | Rated for continuous operation from –40 to +125 °C junction temperature, supporting uncooled designs in enclosures |
Applications
| Ground Fault Circuit Interrupter (GFCI) | Arc Fault Circuit Interrupter (AFCI) |
|---|---|
|
Use Scenario: Detects <30 mA earth leakage in residential outlets and trips within 25 ms. IC Role / Device Role / Timing Role: Crowbar switch that shorts line-to-neutral upon comparator output pulse, forcing upstream breaker to open. Use Value: 100 µA IGT allows direct drive from op-amp-based differential current sensor without buffer stage, reducing BOM count and response latency. |
Use Scenario: Identifies high-frequency arcing signatures in branch circuits and initiates rapid shutdown. IC Role / Device Role / Timing Role: Overvoltage-triggered latch that clamps transient energy during arc detection window, preventing false resets. Use Value: 1250 V VDSM rating ensures single-event survivability during arc-induced line surges, eliminating need for parallel TVS diodes. |
| Residual Current Device (RCD) | Residual Current Circuit Breaker with Overload (RCBO) |
|
Use Scenario: Monitors live–neutral current imbalance in industrial distribution panels with IP65-rated enclosures. IC Role / Device Role / Timing Role: Primary crowbar element in analog trip circuit, activated by isolated current transformer secondary signal. Use Value: Rth(j-l) = 14 °C/W enables stable 1.25 A RMS operation at 58 °C lead temperature without thermal derating or heatsinking. |
Use Scenario: Integrates leakage protection and thermal-magnetic overload tripping in DIN-rail mounted consumer units. IC Role / Device Role / Timing Role: Fast-acting crowbar that initiates mechanical release before thermal bimetal reaches trip point during surge events. Use Value: ≤1 µA IDRM minimizes background current draw in battery-backed monitoring circuits, extending backup runtime by >2 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR-based crowbar protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST's TS110-7UF | SMBflat-3L surface-mount package (47 mg), Rth(j-a) = 75 °C/W, IT(RMS) = 1.25 A at Ttab = 110 °C | Designed for automated SMT assembly in high-density RCBO PCBs; lacks axial leads for through-hole GFCI retrofit boards | Select when board space is constrained and reflow compatibility is required; verify thermal pad layout per DS8670 Figure 19 |
| Littelfuse S4006L | 600 V VDRM, 6 A IT(RMS), IGT = 50 mA, TO-220 package, no IEC 61000-4-5 crowbar validation | Higher current handling but requires gate driver IC due to 50× higher IGT; not qualified for self-protecting surge folding | Use only in non-safety-critical crowbar roles where external gate amplification and discrete overvoltage clamping are acceptable |
Compared with TS110-7UF, TS110-7A1-AP offers proven axial-lead reliability in legacy GFCI designs and lower assembly cost for low-volume production; versus S4006L, it delivers 100× lower gate drive burden and certified IEC 61000-4-5 surge resilience-critical for UL 943/UL 1699 compliance.
Availability
TS110-7A1-AP is available at Aetrix Electronics and suitable for ground fault circuit interrupters, arc fault circuit interrupters, and residual current devices requiring stable component supply, long-term lifecycle support, and traceable ECOPACK® compliance.
Supply support for TS110-7A1-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 applications.
The TS110-7 series belongs to ST's high-reliability protection SCR portfolio, engineered specifically for safety-certified circuit breaker systems demanding ultra-low gate drive, self-protecting surge response, and multi-decade operational stability.
FAQ
What is the maximum allowable gate-cathode resistance for reliable triggering?
The TS110-7A1-AP guarantees triggering with IGT ≤100 µA at RGK = 220 Ω and VD = 12 V. Increasing RGK beyond 220 Ω raises IGT requirement nonlinearly; Figure 7 in DS8670 shows IGT doubles at RGK = 1 kΩ. For production designs, maintain RGK ≤220 Ω to ensure margin across –40 to +125 °C.
Can TS110-7A1-AP be used in bidirectional AC switching applications?
No. TS110-7A1-AP is a unidirectional SCR with anode–cathode polarity dependence. Its gate triggering sensitivity and dV/dt immunity are specified only for forward-blocking mode (A positive vs K). Bidirectional control requires back-to-back SCRs or a TRIAC, neither of which this device implements.
How does the device recover after crowbar activation during a surge?
After latching on during a surge, TS110-7A1-AP remains conducting until current falls below its holding current (IH ≤2 mA) at the next AC zero-crossing. It then regains full 700 V blocking capability within microseconds, verified for ≥10 repeatable IEC 61000-4-5 surges without parameter shift or degradation.
Is the TO-92 package suitable for reflow soldering?
No. The TS110-7A1-AP TO-92 package is intended for wave or hand soldering only. Its epoxy molding compound and leadframe construction are not rated for standard Pb-free reflow profiles (peak >260 °C). For SMT assembly, use the SMBflat-3L variant TS110-7UF, which is qualified for JEDEC J-STD-020 reflow.
TS110-7A1-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:
- 700 V
- Voltage - Gate Trigger (Vgt) (Max):
- 800 mV
- Current - Gate Trigger (Igt) (Max):
- 100 µA
- Voltage - On State (Vtm) (Max):
- 1.4 V
- Current - On State (It (AV)) (Max):
- 800 mA
- Current - On State (It (RMS)) (Max):
- 1.25 A
- Current - Hold (Ih) (Max):
- 2 mA
- Current - Off State (Max):
- 1 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 25A, 27A
- SCR Type:
- Standard Recovery
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
TS110-7A1-AP FAQ
1.How can I place an order for TS110-7A1-AP through Aetrix?
Please submit a Request for Quotation (RFQ) for TS110-7A1-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 TS110-7A1-AP reliable?
The price and inventory of TS110-7A1-AP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS110-7A1-AP is usually 5 days.
3.What payment methods are accepted for TS110-7A1-AP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS110-7A1-AP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS110-7A1-AP?
TS110-7A1-AP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS110-7A1-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 TS110-7A1-AP?
For technical support, including TS110-7A1-AP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS110-7A1-AP requirements.
6.How does Aetrix verify that TS110-7A1-AP is sourced from the original manufacturer or authorized distributors?
All TS110-7A1-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 TS110-7A1-AP meets industry standards.
7.What is the process for return or replacement of TS110-7A1-AP?
All TS110-7A1-AP units undergo pre-shipment inspection (PSI). If there is an issue with TS110-7A1-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 TS110-7A1-AP part is unused and in its original packaging.
Return procedure for TS110-7A1-AP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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