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Texas Instruments TSM24ADBZRQ1
- Part No.:
- TSM24ADBZRQ1
- Manufacturer:
- Texas Instruments
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TSM24ADBZRQ1.pdf
- Description:
- AUTOMOTIVE, 24-V, UNIDIRECTIONAL
- Quantity:
- Payment:
- Shipping:
Inventory:2,870
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Product details
Overview
TSM24ADBZRQ1 from Texas Instruments is an AEC-Q101-qualified unidirectional TVS diode in SOT-23 (DBZ) package, designed for surge and ESD protection on 24 V automotive signal/power lines. It delivers 60 A IEC 61000-4-5 (8/20 µs) surge clamping at 38 V (typ), with 24 V working voltage, 75 nA max leakage, and 54 pF typical line capacitance - deployed in HEV/EV on-board chargers and PLC I/O modules.
For engineers reviewing the TSM24ADBZRQ1 datasheet, TSM24ADBZRQ1 pinout, TSM24ADBZRQ1 application, or TSM24ADBZRQ1 equivalent, key selection criteria include unidirectional clamping performance on 12/24 V rails, ±30-kV IEC 61000-4-2 ESD robustness, low capacitance for high-speed data integrity, and SOT-23 footprint compatibility with AOI and automated assembly.
Technical Context
The TSM24ADBZRQ1 operates as a unidirectional transient voltage suppressor, leveraging avalanche breakdown to clamp surges above 26 V (min) while maintaining <75 nA leakage at 24 V. Its internal structure features a single P-N junction optimized for fast response (<1 ns) to ESD and lightning-induced transients.
It meets AEC-Q101 stress requirements including ±2.5 kV IEC 61000-4-5 open-circuit voltage (42 Ω coupling), ±30-kV contact/air-gap ESD per IEC 61000-4-2, and ISO 10605 compliance with 150/330 pF–330 Ω networks - all validated across –55°C to +150°C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 24 V - matches nominal 24 V power rail or 12 V system with margin, enabling direct placement without series resistors |
| Clamping Voltage (VCLAMP) | 38 V at 60 A (8/20 µs) - limits downstream IC exposure below safe threshold for 3.3 V/5 V logic interfaces |
| Leakage Current (ILEAK) | 75 nA max at 24 V - ensures negligible power loss and signal distortion in always-on sensor or CAN bus applications |
| Line Capacitance (CLINE) | 54 pF typical at 0 V - preserves signal integrity up to ~100 MHz on USB Type-C™ VBUS or digital I/O lines |
| ESD Rating | ±30 kV contact/air per IEC 61000-4-2 - eliminates need for external ESD diodes in automotive infotainment or ADAS sensor nodes |
| Package | SOT-23 (DBZ), 2.92 mm × 2.37 mm - 50% smaller than SMA, supports high-density routing and AOI inspection |
Pinout & Package
SOT-23 (DBZ) package with 3 leads: compact 2.92 mm × 2.37 mm footprint, gull-wing leads, RoHS-compliant NiPdAu plating, MSL Level-1 (260°C unlimited reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | GND | Ground terminal - must be connected to PCB ground plane with low-inductance trace; shares thermal path with Pin 2 |
| Pin 2 | GND | Second ground terminal - electrically tied to Pin 1 internally and externally; required for rated surge performance |
| Pin 3 | I/O | Protected line terminal - connects to 24 V rail or signal line; conducts surge current to GND during clamping event |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional polarity | Enables lower clamping voltage (38 V vs bidirectional 50+ V) on positive-going transients common in 24 V power rails |
| Integrated IEC 61000-4-2 ESD protection | Eliminates discrete ESD diode requirement for USB Type-C™ VBUS and industrial sensor interfaces |
| Low 54 pF capacitance | Minimizes signal rise-time degradation on 10–100 MHz digital I/O lines in PLC modules and EV battery management systems |
| 2.92 mm × 2.37 mm SOT-23 footprint | Reduces board area by 50% vs SMA packages while supporting automated optical inspection and pick-and-place |
Applications
| Automotive Power Train Protection | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting 24 V supply lines in HEV/EV on-board chargers from load dump and alternator ripple transients. IC Role / Device Role / Timing Role: Unidirectional TVS diode placed in parallel with DC-DC converter input to shunt 60 A surge currents away from sensitive control ICs. Use Value: Clamps peak voltage to ≤38 V during 8/20 µs surges, preventing latch-up or overvoltage damage to 3.3 V microcontrollers and gate drivers. | Use Scenario: Shielding analog/digital I/O of pressure and temperature sensors in harsh factory environments. IC Role / Device Role / Timing Role: Surge suppression element on 24 V-powered sensor output lines exposed to ESD and inductive switching noise. Use Value: 75 nA leakage ensures no measurable offset error in precision 4–20 mA loops; 54 pF capacitance avoids bandwidth reduction in 10 kHz sensor sampling. |
| USB Type-C™ VBUS Protection | PLC Digital I/O Module |
Use Scenario: Safeguarding USB Type-C™ VBUS pins against hot-plug ESD and cable discharge events in automotive infotainment head units. IC Role / Device Role / Timing Role: Primary ESD/surge protector directly at connector, before power delivery controller IC. Use Value: ±30 kV IEC 61000-4-2 rating handles worst-case human-body discharges; 24 V VRWM aligns with USB PD 3.0 VBUS regulation window. | Use Scenario: Protecting 24 V digital input/output channels in programmable logic controller (PLC) backplanes from field-wiring transients. IC Role / Device Role / Timing Role: Line-end TVS device on each channel, mounted adjacent to terminal block to minimize inductance. Use Value: 60 A IEC 61000-4-5 surge rating withstands 2.5 kV open-circuit coupled transients; dual-GND pins ensure low-impedance return path for fast energy dissipation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A-Q1 | DO-214AC (SMA) package; 5.3 mm × 4.5 mm; 400 W PPPM; 38.9 V VCLAMP @ 43.5 A | Larger footprint; higher thermal resistance (RθJA = 50°C/W); suited for lower-density boards with less stringent space constraints | Select when legacy SMA layout exists or higher surge repetition tolerance is needed; not drop-in due to size and thermal profile |
| TPD2E001DRYR | 0.65 mm × 0.65 mm DSBGA; dual-channel; 5.5 V VRWM; 12 pF per channel; ±8 kV ESD only - no surge rating | Designed for low-voltage, high-speed data lines (I²C, USB 2.0); lacks IEC 61000-4-5 surge capability | Choose only for sub-6 V signal-level ESD protection; unsuitable for 24 V power rail or surge-prone environments |
Compared with SMAJ24A-Q1 and TPD2E001DRYR, the TSM24ADBZRQ1 uniquely combines AEC-Q101 qualification, 60 A surge handling, 24 V working voltage, and SOT-23 miniaturization - making it optimal for space-constrained automotive and industrial 24 V systems requiring both ESD and surge immunity.
Availability
TSM24ADBZRQ1 is available at Aetrix Electronics and suitable for automotive power train systems, industrial PLC I/O modules, USB Type-C™ VBUS protection, and HEV/EV on-board charger designs requiring stable component supply and long-term lifecycle support.
Supply support for TSM24ADBZRQ1 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
Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in automotive, industrial, and power management technologies.
The TSM24A-Q1 product line targets AEC-Q101-compliant transient protection for 12 V/24 V automotive and industrial networks - specifically engineered to replace bulkier TVS diodes while meeting stringent EMC and reliability standards.
FAQ
What is the maximum surge current rating for TSM24ADBZRQ1?
The TSM24ADBZRQ1 is rated for 60 A peak pulse current (IPPM) under IEC 61000-4-5 8/20 µs waveform conditions at 25 °C. This rating is validated with proper PCB layout - including short, wide traces connecting both GND pins to a solid ground plane - and reflects its ability to safely divert high-energy transients without failure.
Does TSM24ADBZRQ1 support bidirectional protection?
No, TSM24ADBZRQ1 is strictly unidirectional. It clamps only positive transients on the I/O-to-GND path (38 V at 60 A), while allowing reverse conduction down to 7 V (VCLAMP GND-to-I/O). For symmetrical bipolar protection, TI recommends the pin-compatible TSM24CA-Q1, which provides matched clamping in both directions.
What is the significance of dual GND pins (Pins 1 and 2) on TSM24ADBZRQ1?
TSM24ADBZRQ1 requires both Pin 1 and Pin 2 to be connected to ground on the PCB - ideally tied together near the device - to achieve its full 60 A surge rating and specified thermal performance. This dual-GND configuration reduces parasitic inductance and improves heat spreading, ensuring reliable clamping and preventing localized overheating during repetitive surge events.
Can TSM24ADBZRQ1 be used on 12 V automotive systems?
Yes, TSM24ADBZRQ1 is explicitly designed for 12 V system protection despite its 24 V VRWM. Its 26–29 V breakdown voltage (VBR) and 38 V clamping provide sufficient margin above 12 V nominal rails while suppressing load dump spikes up to 27 V (ISO 7637-2 Pulse 5a). TI confirms this use case in automotive hybrid and power train applications.
Is TSM24ADBZRQ1 compatible with lead-free reflow processes?
Yes, TSM24ADBZRQ1 has an MSL Level-1 rating with unlimited floor life and is qualified for peak reflow temperatures up to 260 °C. Its NiPdAu lead finish ensures robust solderability and intermetallic formation control during standard lead-free reflow profiles, meeting IPC-J-STD-020 requirements for automotive-grade assembly.
TSM24ADBZRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 24.8V
- Voltage - Clamping (Max) @ Ipp:
- 38V (Typ)
- Current - Peak Pulse (10/1000µs):
- 60A (8/20µs)
- Power - Peak Pulse:
- 2800W (2.8kW)
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 54pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
TSM24ADBZRQ1 FAQ
1.How can I place an order for TSM24ADBZRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TSM24ADBZRQ1 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 TSM24ADBZRQ1 reliable?
The price and inventory of TSM24ADBZRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSM24ADBZRQ1 is usually 5 days.
3.What payment methods are accepted for TSM24ADBZRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSM24ADBZRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSM24ADBZRQ1?
TSM24ADBZRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSM24ADBZRQ1 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 TSM24ADBZRQ1?
For technical support, including TSM24ADBZRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSM24ADBZRQ1 requirements.
6.How does Aetrix verify that TSM24ADBZRQ1 is sourced from the original manufacturer or authorized distributors?
All TSM24ADBZRQ1 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 TSM24ADBZRQ1 meets industry standards.
7.What is the process for return or replacement of TSM24ADBZRQ1?
All TSM24ADBZRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TSM24ADBZRQ1, 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 TSM24ADBZRQ1 part is unused and in its original packaging.
Return procedure for TSM24ADBZRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSM24ADBZRQ1 Tags
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