My Inquiry
My Account
STMicroelectronics TN815-600B-TR
;;2.jpg)
- Part No.:
- TN815-600B-TR
- Manufacturer:
- STMicroelectronics
- Category:
- SCRs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
TN815-600B-TR.pdf
- Description:
- SCR 600V 8A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,649
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TN815-600B-TR from STMicroelectronics is a standard-sensitivity 8 A, 600 V silicon-controlled rectifier (SCR) in DPAK surface-mount package, featuring 15 mA maximum gate trigger current (IGT), 1.6 V max on-state voltage (VTM) at 16 A, and 50 A/µs critical rate of rise of on-state current (dl/dt). It operates from −40 °C to +125 °C junction temperature and is used in overvoltage crowbar protection circuits for power supplies.
For engineers reviewing the TN815-600B-TR datasheet, TN815-600B-TR pinout, TN815-600B-TR application, or TN815-600B-TR equivalent, key selection criteria include verified IGT range (2–15 mA), dV/dt immunity (≥50 V/µs at Tj = 125 °C), thermal resistance (Rth(j-c) = 1.3 °C/W), and DPAK footprint compatibility with FR4 PCB copper area ≥0.5 cm².
Technical Context
This SCR uses a planar passivated junction structure optimized for high surge robustness and stable triggering across temperature. Its gate threshold is designed for reliable turn-on under low-energy drive conditions while maintaining high dV/dt immunity via internal gate-cathode capacitance control.
It supports phase-angle and zero-crossing control topologies in AC line applications, with holding current (IH) ≤40 mA and latching current (IL) ≤50 mA at 25 °C - enabling predictable commutation in motor control and capacitive discharge ignition circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 8 A RMS on-state current at TC = 91 °C - supports continuous 120 VAC/240 VAC load switching up to 1.9 kVA |
| VDRM / VRRM | 600 V repetitive peak off-state voltage - rated for 240 VAC mains with ≥2× safety margin |
| IGT (max) | 15 mA - compatible with microcontroller GPIO or optocoupler drivers without external amplification |
| VTM | 1.6 V max at ITM = 16 A - limits conduction loss to <25.6 W peak, enabling compact thermal design |
| dl/dt | 50 A/µs - ensures robust turn-on against fast-rising transients in inductive loads |
| dV/dt | 50 V/µs min at Tj = 125 °C - prevents false triggering during line-voltage spikes |
| Rth(j-c) | 1.3 °C/W - allows >6 W steady-state power dissipation with minimal heatsinking in DPAK |
Pinout & Package
DPAK (TO-252) package: surface-mount, single-tab, three-terminal outline with exposed cathode tab for thermal and electrical connection. Dimensions per DS2118 Rev 9: 6.22 mm × 6.73 mm × 2.40 mm (L × W × H), 0.3 g weight, ECOPACK® halogen-free molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (A) | Main current entry terminal | Connected to AC line or DC bus positive; must withstand full VDRM and IT(RMS) |
| Cathode (K) | Main current exit terminal & thermal path | Exposed metal tab - electrically tied to K and serves as primary heat sink interface |
| Gate (G) | Trigger control input | Low-energy input requiring 2–15 mA pulse; sensitive to layout-induced noise due to high dV/dt immunity dependency on RGK |
Key Features
| Feature | Design Value |
|---|---|
| Standard gate sensitivity | IGT = 2–15 mA - balances drive simplicity with noise immunity in industrial environments |
| High surge capability | ITSM = 100 A (tp = 10 ms) - sustains short-circuit events in crowbar protection without failure |
| Thermal performance | Rth(j-c) = 1.3 °C/W - enables >6 W continuous dissipation with minimal copper area (0.5 cm²) |
| Robust dV/dt immunity | 50 V/µs at 125 °C - prevents spurious turn-on during EMI-rich AC line transients |
| ECOPACK® compliance | Halogen-free, lead-free plating - meets RoHS and JEDEC J-STD-020 reflow requirements |
Applications
| Overvoltage Crowbar Protection | Power Tool Motor Control |
|---|---|
Use Scenario: Fast-acting shunt device triggered by voltage monitor IC to short AC line during overvoltage events in SMPS or lab power supplies. IC Role / Device Role / Timing Role: High-current latching switch activated within microseconds to clamp fault energy before downstream components fail. Use Value: 100 A non-repetitive surge rating and 50 A/µs dl/dt ensure reliable firing even under high di/dt fault conditions. | Use Scenario: Phase-controlled AC motor drive in corded drills and sanders, regulating speed via variable conduction angle. IC Role / Device Role / Timing Role: Main power switch in single-phase half-wave or full-wave AC controller, synchronized to zero-crossing detection. Use Value: 8 A RMS rating and 40 mA max holding current enable stable conduction down to low-speed operation without dropout. |
| Inrush Current Limiting | Capacitive Discharge Ignition (CDI) |
Use Scenario: Inrush limiter for large input capacitors in industrial AC-DC converters, bypassed after soft-start via parallel relay or MOSFET. IC Role / Device Role / Timing Role: Temporary series switch that conducts only during first 1–2 AC cycles, then commutated by natural current zero. Use Value: Low VTM (1.6 V) minimizes power loss during brief inrush period; 15 mA IGT ensures reliable turn-on from simple RC timing circuit. | Use Scenario: High-energy spark generation in small-engine ignition systems, where capacitor discharge triggers SCR to dump stored energy into ignition coil. IC Role / Device Role / Timing Role: High-current discharge switch triggered by low-energy pulse from timing circuit or Hall sensor. Use Value: 100 A surge rating and 46 mΩ dynamic resistance ensure efficient transfer of >100 mJ pulses with minimal voltage drop. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SCR switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TN805-600B-TR | Lower IGT (0.5–5 mA), same VDRM/IT(RMS)/package | Better suited for ultra-low-power gate drive; less immune to noise in EMI-heavy environments | Select when driving from weak sources (e.g., phototriac couplers) and noise is controlled |
| TYN608RG | TO-220AB through-hole, identical IGT (2–15 mA), higher Rth(j-c) = 1.3 °C/W but larger thermal mass | Preferred for prototyping, high-reliability industrial panels, or where manual assembly required | Select when board space permits through-hole mounting and mechanical robustness is prioritized over density |
Compared with TN805-600B-TR, TN815-600B-TR trades lower gate sensitivity for improved noise immunity; versus TYN608RG, it offers superior PCB area efficiency and automated assembly compatibility while matching core electrical performance.
Availability
TN815-600B-TR is available at Aetrix Electronics and suitable for overvoltage crowbar protection, power tool motor control, and inrush current limiting applications requiring stable component supply and long-term industrial availability.
Supply support for TN815-600B-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 analog, MCU, power, and sensing solutions for industrial, automotive, and consumer markets.
TN815 belongs to ST's standard-sensitivity 8 A SCR family, engineered for cost-effective, robust AC power control in space-constrained industrial equipment where reliability under thermal and electrical stress is critical.
FAQ
What is the maximum junction temperature for continuous operation?
The TN815-600B-TR has an operating junction temperature range of −40 °C to +125 °C. Continuous operation at 125 °C requires thermal design ensuring case temperature does not exceed 91 °C, per its IT(RMS) = 8 A rating condition. Derating is necessary above this case temperature.
Can TN815-600B-TR replace TS820-600B in existing designs?
No - TS820-600B is a sensitive-gate SCR (IGT ≤ 0.2 mA), while TN815-600B-TR requires up to 15 mA gate drive. Substitution would cause unreliable turn-on unless gate drive strength is increased, and dV/dt immunity characteristics differ significantly between the two families.
Is the DPAK tab electrically isolated?
No - the exposed DPAK tab is internally connected to the cathode (K) terminal. It must be mounted on a PCB copper pour tied to the cathode net and thermally coupled to a heatsink if power dissipation exceeds ~2 W. Electrical isolation requires insulating hardware or dielectric thermal pads.
What is the recommended minimum gate-cathode resistance for stable operation?
ST recommends RGK ≤ 1 kΩ for reliable turn-on and commutation. Values above 1 kΩ increase IH and IL, risking unintended turn-off in low-current phases. Figure 8 shows IH rises >3× when RGK increases from 1 kΩ to 10 kΩ at 25 °C - avoid high-impedance gate paths.
TN815-600B-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Off State:
- 600 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):
- 5 A
- Current - On State (It (RMS)) (Max):
- 8 A
- Current - Hold (Ih) (Max):
- 40 mA
- Current - Off State (Max):
- 5 µA
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 70A, 73A
- SCR Type:
- Standard Recovery
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
TN815-600B-TR FAQ
1.How can I place an order for TN815-600B-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for TN815-600B-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 TN815-600B-TR reliable?
The price and inventory of TN815-600B-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TN815-600B-TR is usually 5 days.
3.What payment methods are accepted for TN815-600B-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TN815-600B-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TN815-600B-TR?
TN815-600B-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TN815-600B-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 TN815-600B-TR?
For technical support, including TN815-600B-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TN815-600B-TR requirements.
6.How does Aetrix verify that TN815-600B-TR is sourced from the original manufacturer or authorized distributors?
All TN815-600B-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 TN815-600B-TR meets industry standards.
7.What is the process for return or replacement of TN815-600B-TR?
All TN815-600B-TR units undergo pre-shipment inspection (PSI). If there is an issue with TN815-600B-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 TN815-600B-TR part is unused and in its original packaging.
Return procedure for TN815-600B-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TN815-600B-TR Tags
-
MCR12DSNT4G
Littelfuse Inc.
-
2N6404G
Littelfuse Inc.
-
S4015LTP
Littelfuse Inc.
-
VS-25TTS12HM3
Vishay General Semiconductor - Diodes Division
-
S4020LTP
Littelfuse Inc.
-
MCR12MG
Littelfuse Inc.
-
MCR69-3G
Littelfuse Inc.
-
S8025LTP
Littelfuse Inc.
-
CMA30E1600PN
IXYS
-
S8016RATP
Littelfuse Inc.
-
TXN625RG
STMicroelectronics
.jpg)
-
SK055RTP
Littelfuse Inc.
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
