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Vishay T15B24AHM3/H
- Part No.:
- T15B24AHM3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
T15B24AHM3/H.pdf
- Description:
- 1.5KW,24V 5%,SMB PAR
- Quantity:
- Payment:
- Shipping:
Inventory:3,503
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Product details
Overview
T15B24AHM3/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for automotive-grade overvoltage protection of sensitive electronics. It delivers 1500 W peak pulse power (10/1000 μs), clamps at 33.2 V under 46.7 A surge current, and operates with 20.5 V stand-off voltage and 22.8–25.2 V breakdown range at 1 mA test current. Its SMB (DO-214AA) package supports high-reliability applications in sensor signal lines and MOSFET gate protection.
For engineers reviewing the T15B24AHM3/H datasheet, T15B24AHM3/H pinout, T15B24AHM3/H application, or T15B24AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, TJ = 185 °C maximum junction temperature, MSL Level 1 rating, 30 kV ESD immunity per IEC 61000-4-2, and halogen-free, RoHS-compliant HM3 construction.
Technical Context
The T15B24AHM3/H employs passivated anisotropic rectifier technology to achieve stable clamping performance across temperature extremes. Its unidirectional architecture provides low-leakage reverse blocking (≤1.0 μA at 20.5 V, ≤10.0 μA at TJ = 150 °C) and fast response time suitable for transient suppression from inductive switching and lightning-induced surges.
Designed for automotive environments, it meets AEC-Q101 stress testing requirements and features a junction temperature range of –65 °C to +185 °C. The device's thermal derating curve (Fig.2) and peak pulse power profile (Fig.1) are defined for 10/1000 μs waveform conditions, with clamping voltage tightly specified at 33.2 V under 46.7 A IPPM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 22.8 V / 24.0 V / 25.2 V at 1 mA - defines precise breakdown threshold for reliable triggering during overvoltage events |
| VWM | 20.5 V - maximum continuous reverse operating voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 33.2 V at 46.7 A - clamping voltage limits downstream IC/MOSFET stress during 1500 W transient |
| PPPM | 1500 W (10/1000 μs) - peak surge power handling capacity validated per ANSI/IEEE C62.35 |
| TJ max | +185 °C - enables operation in under-hood automotive zones without thermal derating penalties |
| ESD Rating | ±30 kV contact/air (IEC 61000-4-2) - protects against human-body-model and system-level electrostatic discharge |
| MSL Level | Level 1 (J-STD-020) - supports lead-free reflow up to 260 °C peak without moisture-related failure |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, cathode indicated by molded band. Dimensions: 4.57 mm × 3.94 mm × 2.20 mm (L × W × H), with 2.18 mm minimum pad width and 5.59 mm reference body length.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink node | Connected to protected line; conducts surge current to ground when VBR exceeded |
| Anode | Reference/ground return path | Typically tied to system ground plane; completes clamping loop during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable VBR drift <0.085 %/°C and long-term reliability under thermal cycling |
| AEC-Q101 qualification | Validated for automotive use including HTOL, TC, UHAST, and ESD stress per JEDEC standards |
| Halogen-free HM3 suffix | Meets RoHS Directive 2011/65/EU and JESD201 Class 2 whisker resistance for solder joint integrity |
| UL 94 V-0 molding compound | Self-extinguishing encapsulation prevents flame propagation in high-density PCB assemblies |
Applications
| Automotive Sensor Protection | MOSFET Gate Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus sensor nodes (e.g., pressure, temperature, position sensors) from load-dump transients and ESD in engine control modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground to clamp spikes before they reach analog front-end or microcontroller input pins. Use Value: Maintains signal integrity below 20.5 V stand-off while limiting clamping to 33.2 V, preventing latch-up or gate oxide damage in connected ICs. | Use Scenario: Safeguarding N-channel MOSFET gates in automotive DC-DC converters and motor drivers exposed to inductive kickback. IC Role / Device Role / Timing Role: TVS connected between gate and source to absorb negative-going transients that could exceed gate oxide breakdown rating. Use Value: Fast response and low clamping voltage prevent gate-source overvoltage beyond ±20 V, preserving MOSFET reliability over 100,000+ cycles. |
| Infotainment Power Rail Protection | Body Control Module (BCM) I/O Protection |
Use Scenario: Shielding 12 V power inputs to infotainment head units from battery line transients during jump-start or alternator load dump. IC Role / Device Role / Timing Role: Primary TVS on main VIN rail upstream of DC-DC regulators and PMICs. Use Value: 1500 W surge rating handles 12 V system transients up to ISO 7637-2 Pulse 5a (110 V, 100 ms), reducing need for secondary filtering. | Use Scenario: Protecting GPIO and switch-input circuits in BCMs from ESD and relay-coil flyback in lighting and door-control subsystems. IC Role / Device Role / Timing Role: Discrete TVS on each low-voltage digital input line (e.g., 5 V or 3.3 V logic) referenced to local ground. Use Value: 30 kV IEC 61000-4-2 immunity and ≤1.0 μA leakage at 20.5 V ensure no false triggering or standby current penalty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ24A | Same SMB package, 24 V nominal VBR, but lower PPPM = 600 W and non-AEC-Q101 rated | Limited to industrial/commercial grade; not qualified for automotive under-hood use | Select when cost sensitivity outweighs automotive qualification and higher surge margin is unnecessary |
| TPSMA6.8A | Lower VWM = 5.8 V, VBR = 6.45–7.14 V, PPPM = 600 W - mismatched voltage rating for 24 V systems | Only suitable for sub-12 V logic rails; cannot replace T15B24AHM3/H in 24 V automotive applications | Use only for low-voltage digital I/O protection where clamping below 7 V is required |
Compared with SMBJ24A and TPSMA6.8A, the T15B24AHM3/H uniquely combines AEC-Q101 qualification, 1500 W surge capability, and 20.5 V stand-off in SMB format-enabling single-device compliance with ISO 16750-2 and OEM-specific surge requirements for 24 V vehicle platforms.
Availability
T15B24AHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, MOSFET gate safeguarding, and body control module I/O conditioning requiring stable component supply across extended temperature and lifecycle demands.
Supply support for T15B24AHM3/H 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, TVS devices, and optoelectronics with emphasis on high-reliability and automotive-grade performance.
The T15B24AHM3/H belongs to Vishay's PAR® family of high-power TVS diodes engineered specifically for harsh-environment automotive electronics, where sustained operation at 185 °C and immunity to repetitive surge events are mandatory.
FAQ
What is the maximum clamping voltage of the T15B24AHM3/H under full-rated surge current?
The T15B24AHM3/H has a maximum clamping voltage (VC) of 33.2 V when subjected to its rated peak pulse current of 46.7 A (10/1000 μs waveform). This value is measured per ANSI/IEEE C62.35 and guarantees predictable voltage limiting during transient events. The T15B24AHM3/H maintains this clamping performance across its full operating temperature range, making it suitable for under-hood automotive deployment where thermal stability is critical.
Is the T15B24AHM3/H qualified for automotive applications per AEC-Q101?
Yes, the T15B24AHM3/H is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number: 98360, Revision: 19-Jan-2024). It undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TC), unbiased highly accelerated stress test (UHAST), and ESD per JESD22-A114. This qualification validates the T15B24AHM3/H for use in automotive powertrain, chassis, and body electronics where reliability under extreme conditions is required.
What does the "HM3" suffix indicate in T15B24AHM3/H?
"HM3" denotes Vishay's halogen-free, RoHS-compliant, and AEC-Q101-qualified construction. It specifies matte tin-plated leads compliant with J-STD-002 and JESD22-B102 solderability standards, plus JESD201 Class 2 whisker resistance. The "/H" indicates packaging in 7″ diameter plastic tape and reel (750 units per reel). The HM3 suffix confirms the T15B24AHM3/H meets stringent environmental and reliability requirements for modern automotive electronics manufacturing.
Can the T15B24AHM3/H be used in 12 V automotive systems?
The T15B24AHM3/H is optimized for 24 V nominal systems (VWM = 20.5 V), but may be used in 12 V applications only if the protected circuit's maximum steady-state voltage remains well below 20.5 V and transient margins allow for its 33.2 V clamping level. For dedicated 12 V protection, Vishay's T15B12AHM3/H (VWM = 10.2 V, VC = 17.0 V) is the appropriate variant. Using the T15B24AHM3/H in 12 V designs risks insufficient margin between VWM and system voltage, increasing leakage and thermal stress.
What is the junction-to-ambient thermal resistance (RθJA) of the T15B24AHM3/H?
The Vishay datasheet for T15B24AHM3/H does not specify RθJA as a standalone parameter. Thermal performance is characterized via derating curves (Fig.2) showing pulse power vs. initial junction temperature. For PCB layout, Vishay recommends standard SMB footprint dimensions (0.220″ × 0.130″ pads) with adequate copper area to manage heat during repetitive surges. Designers should refer to the T15B24AHM3/H's published derating data-not assumed RθJA-to ensure safe operation at elevated ambient temperatures.
T15B24AHM3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay
- Package/Case:
- DO-214AA, SMB
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 20.5V
- Voltage - Breakdown (Min):
- 22.8V
- Voltage - Clamping (Max) @ Ipp:
- 33.2V
- Current - Peak Pulse (10/1000µs):
- 46.7A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
T15B24AHM3/H FAQ
1.How can I place an order for T15B24AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T15B24AHM3/H 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 T15B24AHM3/H reliable?
The price and inventory of T15B24AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T15B24AHM3/H is usually 5 days.
3.What payment methods are accepted for T15B24AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T15B24AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T15B24AHM3/H?
T15B24AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T15B24AHM3/H 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 T15B24AHM3/H?
For technical support, including T15B24AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T15B24AHM3/H requirements.
6.How does Aetrix verify that T15B24AHM3/H is sourced from the original manufacturer or authorized distributors?
All T15B24AHM3/H 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 T15B24AHM3/H meets industry standards.
7.What is the process for return or replacement of T15B24AHM3/H?
All T15B24AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T15B24AHM3/H, 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 T15B24AHM3/H part is unused and in its original packaging.
Return procedure for T15B24AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T15B24AHM3/H Tags
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