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Home > Products > Discrete Semiconductor Products > Thyristors > SCRs

STMicroelectronics TN1215-600B

Name: TN1215-600B
Brand: STMicroelectronics
SKU: TN1215-600B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TN1215-600B

Manufacturer:: STMicroelectronics

Category:: SCRs

Package:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Datasheet:: TN1215-600B.pdf

Description:: SCR 600V 12A DPAK

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Product details

Overview

TN1215-600B from STMicroelectronics is a standard 12 A, 600 V repetitive peak off-state voltage (VDRM/VRRM) silicon-controlled rectifier (SCR) with 15 mA gate trigger current (IGT), designed for phase-controlled AC power switching in motor control, overvoltage crowbar protection, and inrush current limiting circuits. It features low on-state voltage (1.6 V at 24 A), high surge capability (115 A non-repetitive, 8.3 ms), and thermal resistance of 1.3 °C/W (junction-to-case).

For engineers reviewing the TN1215-600B datasheet, TN1215-600B pinout, TN1215-600B application, or TN1215-600B equivalent, key selection criteria include RMS current rating (12 A), gate sensitivity (15 mA), package thermal performance (DPAK, R_th(j-c) = 1.3 °C/W), and dV/dt immunity (200 V/µs at 125 °C).

Technical Context

This SCR operates as a unidirectional, latching power switch triggered by a positive gate pulse relative to the cathode. Conduction initiates when gate current exceeds 15 mA under 12 V bias and 33 Ω load, sustaining conduction until anode current falls below the holding current (max 40 mA) or reverses.

It supports full-wave phase-angle control in AC line applications up to 600 V peak, with critical dV/dt immunity of 200 V/µs at 125 °C and dynamic resistance of 30 mΩ - enabling robust noise immunity and low conduction loss in compact motor drive and protection circuits.

Key Specifications

Parameter	Value and Actual Design Meaning
IT(RMS)	12 A - Sustained AC load current handling at 110 °C case temperature, suitable for continuous 1.5 kW resistive loads at 230 VAC.
VDRM / VRRM	600 V - Maximum repetitive blocking voltage in both forward and reverse directions, supporting 230 VAC mains with ≥2× safety margin.
IGT	15 mA - Gate trigger current required at 12 V and 33 Ω load; defines minimum driver strength needed for reliable turn-on.
VTM	1.6 V max at 24 A - On-state voltage drop determines conduction loss (≈38 W at 24 A), directly impacting thermal design in DPAK package.
dV/dt	200 V/µs min at 125 °C - Critical rate-of-rise immunity prevents false triggering from line transients or commutation spikes in noisy industrial environments.
Rth(j-c)	1.3 °C/W - Junction-to-case thermal resistance enables 9.2 W dissipation at ΔT = 12 °C, defining heatsink requirements for 12 A RMS operation.
I²t	60 A²s - Fusing I²t value determines short-circuit withstand time (e.g., ~5.2 ms at 100 A), critical for crowbar protection timing design.

Pinout & Package

The TN1215-600B is housed in a surface-mount DPAK (TO-252) package with three terminals: anode (A), cathode (K), and gate (G). The exposed tab is electrically connected to the anode and serves as the primary thermal path.

Pin/Terminal	Circuit Role	Design Meaning
Anode (A)	Main power input terminal	Carries full load current; electrically tied to metal tab for thermal conduction and must be isolated from heatsink unless referenced to system ground.
Cathode (K)	Main power output terminal	Reference node for gate drive; common return for load current and gate circuit; lowest potential during conduction.
Gate (G)	Control input terminal	Receives low-energy trigger pulse (≥15 mA, 12 V); polarity-sensitive (positive w.r.t. K); requires snubbing in inductive loads.

Key Features

Feature	Design Value
High surge current rating	115 A non-repetitive (8.3 ms) - Enables robust inrush current handling in power tool motor startups without derating.
Low on-state voltage	1.6 V max at 24 A - Reduces conduction loss by >25% vs. legacy 2 V SCRs, easing thermal management in space-constrained DPAK layouts.
High dV/dt immunity	200 V/µs at 125 °C - Eliminates need for external RC snubbers in many 230 VAC motor control designs, lowering BOM count.
Halogen-free, lead-free DPAK	ECOPACK® compliant - Meets RoHS and JEDEC J-STD-020 reflow profiles, supporting automated SMT assembly without thermal degradation.
Optimized gate sensitivity	15 mA IGT with 1.3 V VGT max - Compatible with standard microcontroller GPIOs via single-stage NPN driver, reducing gate drive complexity.

Applications

Motor Control in Power Tools

Overvoltage Crowbar Protection

Use Scenario: Phase-controlled speed regulation in corded drills and angle grinders operating from 230 VAC mains.

IC Role / Device Role / Timing Role: Main power switch in half-wave or full-wave AC controller; triggered synchronously with zero-crossing detection.

Use Value: 12 A RMS rating supports 1.5 kW continuous torque delivery; 600 V VDRM ensures safe operation during line surges up to 400 V peak.

Use Scenario: Fast-acting shunt protection for DC bus rails in SMPS or battery chargers during overvoltage faults.

IC Role / Device Role / Timing Role: Crowbar element triggered by comparator output; latches on to short-circuit supply until fuse blows.

Use Value: 115 A surge rating and 60 A²s I²t enable precise coordination with 10 A fast-blow fuses; DPAK footprint allows placement near rail.

Inrush Current Limiting

Voltage Regulation Circuits

Use Scenario: Soft-start for transformer-based power supplies or large capacitive inputs in kitchen appliances.

IC Role / Device Role / Timing Role: Series-connected SCR bypassed after thermistor cooldown; gated to delay conduction until steady state.

Use Value: 15 mA IGT allows direct drive from low-power timing ICs; 200 V/µs dV/dt prevents false turn-on during capacitor charging transients.

Use Scenario: Adjustable AC voltage control in lighting dimmers or heater controllers using phase-angle modulation.

IC Role / Device Role / Timing Role: Bidirectional switching element (with back-to-back configuration) controlling power delivered to resistive loads.

Use Value: Low V_TM (1.6 V) minimizes heat generation at partial conduction angles; DPAK thermal resistance supports 12 A at ambient ≤60 °C.

Equivalent & Alternatives

The following parts are listed as comparable options for similar SCR switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TYN612RG	Same 600 V VDRM, 12 A IT(RMS), but TO-220AB through-hole package; higher R_th(j-c) (1.3 °C/W same), but larger thermal mass.	Requires PCB through-holes and mechanical mounting; better suited for prototyping or high-vibration environments where SMT reliability is a concern.	Select TYN612RG when manual assembly, field serviceability, or heatsink bolt-down is prioritized over board space.
TN1215-600G	D2PAK package variant with identical electrical specs; R_th(j-c) = 1.3 °C/W but larger copper pad area (S = 1.0 cm²) yields lower R_th(j-a) (45 vs. 70 °C/W).	Supports higher ambient temperature operation without heatsink in low-airflow enclosures due to superior PCB heat spreading.	Select TN1215-600G when ambient temperature exceeds 50 °C or when no external heatsink is used in production units.

Compared with TYN612RG and TN1215-600G, the TN1215-600B offers the smallest PCB footprint and fastest automated assembly, while maintaining identical electrical performance - making it optimal for high-volume, space-constrained consumer power electronics.

Availability

TN1215-600B is available at Aetrix Electronics and suitable for motor control in power tools, overvoltage crowbar protection in SMPS, and inrush current limiting in kitchen appliances requiring stable component supply across multi-year production cycles.

Supply support for TN1215-600B 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 sensor solutions for industrial, automotive, and consumer markets.

The TN1215 series belongs to ST's standard SCR product line, engineered for cost-effective, robust AC power control in high-volume white goods, power tools, and industrial equipment - emphasizing manufacturability, thermal efficiency, and long-term supply stability.

FAQ

What is the maximum junction temperature for continuous operation?

The TN1215-600B has an operating junction temperature range of –40 °C to +125 °C. For continuous 12 A RMS operation in DPAK, case temperature must not exceed 110 °C per absolute ratings - requiring thermal design that limits junction rise to ≤125 °C, typically using ≥1 cm² copper pour under the tab.

Can TN1215-600B replace a TRIAC in AC phase-control applications?

No - TN1215-600B is a unidirectional SCR and conducts only during alternate half-cycles. To replace a TRIAC, two TN1215-600B devices must be connected in inverse-parallel with coordinated gate drives, adding complexity versus a single TRIAC. It is not a drop-in TRIAC substitute.

Is a gate resistor required, and what value is recommended?

Yes - a series gate resistor limits peak gate current (IGM = 4 A max) and suppresses ringing. For 12 V drive with 15 mA IGT, a 680 Ω resistor ensures reliable triggering while clamping IGM below 18 mA during transient spikes, per ST application guidelines.

Does TN1215-600B support snubberless operation in inductive loads?

It supports reduced-snubber designs due to its 200 V/µs dV/dt rating at 125 °C, but full snubberless operation requires verification against specific load L/R ratio and commutation stress. ST recommends RC snubbers for inductive loads >100 mH to ensure gate-controlled turn-off reliability.

TN1215-600B Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-252-3, DPAK (2 Leads + Tab), SC-63

Packaging:: Tube

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):: 8 A

Current - On State (It (RMS)) (Max):: 12 A

Current - Hold (Ih) (Max):: 40 mA

Current - Off State (Max):: 5 µA

Current - Non Rep. Surge 50, 60Hz (Itsm):: 110A, 115A

SCR Type:: Standard Recovery

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: DPAK

TN1215-600B FAQ

1.How can I place an order for TN1215-600B through Aetrix?

Please submit a Request for Quotation (RFQ) for TN1215-600B 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 TN1215-600B reliable?

The price and inventory of TN1215-600B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TN1215-600B is usually 5 days.

3.What payment methods are accepted for TN1215-600B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TN1215-600B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TN1215-600B?

TN1215-600B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TN1215-600B 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 TN1215-600B?

For technical support, including TN1215-600B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TN1215-600B requirements.

6.How does Aetrix verify that TN1215-600B is sourced from the original manufacturer or authorized distributors?

All TN1215-600B 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 TN1215-600B meets industry standards.

7.What is the process for return or replacement of TN1215-600B?

All TN1215-600B units undergo pre-shipment inspection (PSI). If there is an issue with TN1215-600B, 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 TN1215-600B part is unused and in its original packaging.

Return procedure for TN1215-600B:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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