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Vishay General Semiconductor - Diodes Division T15B22AHM3/I
- Part No.:
- T15B22AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
T15B22AHM3/I.pdf
- Description:
- 1500 W UNI-DIRECTIONAL TVS IN SM
- Quantity:
- Payment:
- Shipping:
Inventory:3,200
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Product details
Overview
T15B22AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) designed for clamping inductive switching surges and lightning-induced transients in automotive sensor signal lines and MOSFET gate protection circuits. It delivers 1500 W peak pulse power (10/1000 μs), features a 22 V nominal breakdown voltage (VBR), 30.6 V maximum clamping voltage (VC) at 50.7 A, and operates up to +185 °C junction temperature.
For engineers reviewing the T15B22AHM3/I datasheet, T15B22AHM3/I pinout, T15B22AHM3/I application, or T15B22AHM3/I equivalent, key selection criteria include its AEC-Q101 qualification, SMB (DO-214AA) package compatibility, unidirectional polarity with cathode band marking, and verified 30 kV ESD immunity per IEC 61000-4-2 contact discharge.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping performance across -65 °C to +185 °C operating range. Its 0.084 %/°C temperature coefficient of VBR enables predictable voltage drift under thermal stress in engine bay or powertrain modules.
The device meets MSL Level 1 per J-STD-020 with 260 °C lead-free reflow peak, and its matte tin-plated terminals comply with J-STD-002 and JESD 22-B102 solderability standards. The HM3 suffix confirms halogen-free, RoHS-compliant, and whisker-tested (JESD 201 Class 2) construction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Nominal) | 22.0 V - precise breakdown threshold for reliable overvoltage triggering in 24 V automotive systems |
| VWM | 18.8 V - maximum continuous reverse working voltage without leakage degradation |
| VC @ IPPM | 30.6 V - clamped voltage during 50.7 A surge, limiting downstream IC stress to safe levels |
| PPPM | 1500 W - peak pulse power handling capability with 10/1000 μs waveform |
| TJ max. | +185 °C - extended junction temperature rating enabling placement near high-heat sources |
| ESD Rating | 30 kV contact discharge - exceeds IEC 61000-4-2 Level 4 for robust ESD hardening |
| Polarity | Unidirectional - protects against positive-going transients only; requires correct cathode orientation |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, molded case with UL 94 V-0 flammability rating; cathode indicated by color band on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode of internal PN junction | Connected to protected line; conducts during overvoltage to shunt current to ground |
| Anode (non-banded end) | Cathode of internal PN junction | Typically tied to system ground; completes clamping path during transient events |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier process ensures stable leakage and clamping over lifetime and temperature |
| AEC-Q101 qualification | Validated reliability for automotive powertrain, chassis, and ADAS applications requiring zero field failure |
| MSL Level 1 rating | Enables single-pass lead-free reflow without moisture-related popcorn cracking |
| Halogen-free & RoHS | HM3 suffix guarantees compliance with environmental regulations and supply chain sustainability requirements |
| 185 °C TJ capability | Supports under-hood placement in modern electric and hybrid vehicle architectures |
Applications
| Automotive Sensor Protection | Power MOSFET Gate Clamp |
|---|---|
Use Scenario: Protecting LIN/CAN sensor signal lines (e.g., pressure, temperature, position sensors) from load dump and inductive kickback in 12 V/24 V vehicle networks. IC Role / Device Role / Timing Role: Standoff clamping device placed between signal line and ground, triggered only during >18.8 V transients. Use Value: Limits voltage seen by sensor IC input to ≤30.6 V during 50.7 A surge, preventing latch-up or oxide damage. | Use Scenario: Safeguarding gate-source junction of high-side N-channel MOSFETs in DC-DC converters and motor drivers subjected to Miller-induced spikes. IC Role / Device Role / Timing Role: Fast-response unidirectional clamp absorbing positive gate overvoltage before it exceeds VGS(max). Use Value: Clamps within nanoseconds to hold gate voltage below 30.6 V, avoiding irreversible gate oxide rupture. |
| Engine Control Unit (ECU) Input Protection | Body Control Module (BCM) Signal Line Hardening |
Use Scenario: Shielding analog/digital inputs of engine control units from alternator load dump transients and relay coil flyback in combustion and hybrid powertrains. IC Role / Device Role / Timing Role: Primary front-end transient suppressor on low-voltage analog inputs (e.g., throttle position, O2 sensor). Use Value: Withstands repeated 1500 W pulses while maintaining <1 μA leakage at 18.8 V, preserving signal integrity. | Use Scenario: Enhancing ESD robustness of LIN bus and switch inputs in door modules, lighting controls, and HVAC interfaces. IC Role / Device Role / Timing Role: System-level ESD protection element meeting 30 kV contact discharge requirement per IEC 61000-4-2. Use Value: Eliminates need for secondary ESD components by integrating full-system level immunity into single SMB footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ22A | Same SMB package, 22 V VBR, but rated for 600 W PPPM (10/1000 μs); lower clamping ratio | Limited to lower-energy transients; not AEC-Q101 qualified | Use where cost sensitivity outweighs automotive qualification and surge margin |
| TPSMA6L22A | Same 22 V VBR, 1500 W rating, but 33.2 V VC at 46.7 A; higher clamping voltage | Less effective voltage limiting for sensitive 3.3 V/5 V logic interfaces | Select when footprint compatibility is critical but tighter clamping is not required |
Compared with SMBJ22A and TPSMA6L22A, the T15B22AHM3/I provides superior thermal robustness (185 °C vs. 150 °C), AEC-Q101 validation, and lower clamping voltage-making it the preferred choice for mission-critical automotive signal protection where reliability and precision clamping are non-negotiable.
Availability
T15B22AHM3/I is available at Aetrix Electronics and suitable for automotive sensor protection, power MOSFET gate clamping, and ECU input hardening requiring stable component supply across long production lifecycles.
Supply support for T15B22AHM3/I 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 solutions.
The T15B22AHM3/I belongs to Vishay's PAR® family of high-power surface-mount TVS diodes engineered specifically for harsh-environment automotive electronics demanding AEC-Q101 compliance, extended temperature operation, and repeatable surge immunity.
FAQ
What is the maximum clamping voltage of the T15B22AHM3/I at its rated peak pulse current?
The T15B22AHM3/I has a maximum clamping voltage (VC) of 30.6 V at its rated peak pulse current of 50.7 A (10/1000 μs waveform). This value is measured under standardized test conditions and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. Maintaining VC this low ensures compatibility with 3.3 V, 5 V, and 24 V automotive ICs without risking overvoltage damage. The T15B22AHM3/I achieves this via optimized junction design and low dynamic impedance.
Is the T15B22AHM3/I qualified for automotive use?
Yes, the T15B22AHM3/I is AEC-Q101 qualified, confirming its suitability for automotive applications including powertrain, chassis, and body electronics. This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and accelerated life under high junction temperatures up to +185 °C. The HM3 suffix further indicates halogen-free, RoHS-compliant, and whisker-resistant construction-key requirements for Tier 1 automotive supply chains. The T15B22AHM3/I is explicitly listed in Vishay's AEC-Q101 certified product portfolio.
What does the "HM3" suffix mean in T15B22AHM3/I?
The "HM3" suffix in T15B22AHM3/I denotes a halogen-free, RoHS-compliant, and AEC-Q101 qualified version with matte tin-plated terminals that pass JESD 201 Class 2 whisker testing. It also indicates compliance with J-STD-020 MSL Level 1 for moisture sensitivity, allowing safe lead-free reflow processing. The "I" denotes packaging in 13-inch tape-and-reel format (3200 units per reel), distinguishing it from the "H" variant (750 units, 7-inch reel). The T15B22AHM3/I is fully interchangeable with other HM3-suffix variants in the T15BxxA series.
Can the T15B22AHM3/I be used in bidirectional protection circuits?
No, the T15B22AHM3/I is a unidirectional TVS diode and is not suitable for bidirectional protection. Its electrical structure supports clamping only for positive transients relative to ground (anode grounded, cathode to protected line). For bidirectional applications-such as AC signal lines or differential buses like RS-485-engineers must select a dedicated bidirectional variant (e.g., T15B22AHM3/IT) or pair two unidirectional devices. Using the T15B22AHM3/I in reverse-biased configurations risks permanent breakdown due to lack of symmetric reverse standoff capability.
What is the leakage current specification for the T15B22AHM3/I at its working voltage?
The T15B22AHM3/I exhibits a maximum reverse leakage current (IR) of 1.0 μA at its stand-off voltage (VWM) of 18.8 V and ambient temperature of 25 °C. At elevated temperature (TJ = 150 °C), leakage remains tightly controlled at ≤10 μA-critical for preserving signal integrity in high-impedance sensor interfaces. This low leakage ensures minimal power loss and avoids false triggering in always-on automotive subsystems. All leakage values for the T15B22AHM3/I are verified per the manufacturer's electrical characteristics table in Document Number 98360.
T15B22AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- 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):
- 18.8V
- Voltage - Breakdown (Min):
- 20.9V
- Voltage - Clamping (Max) @ Ipp:
- 30.6V
- Current - Peak Pulse (10/1000µs):
- 50.7A
- 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)
T15B22AHM3/I FAQ
1.How can I place an order for T15B22AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for T15B22AHM3/I 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 T15B22AHM3/I reliable?
The price and inventory of T15B22AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T15B22AHM3/I is usually 5 days.
3.What payment methods are accepted for T15B22AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T15B22AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T15B22AHM3/I?
T15B22AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T15B22AHM3/I 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 T15B22AHM3/I?
For technical support, including T15B22AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T15B22AHM3/I requirements.
6.How does Aetrix verify that T15B22AHM3/I is sourced from the original manufacturer or authorized distributors?
All T15B22AHM3/I 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 T15B22AHM3/I meets industry standards.
7.What is the process for return or replacement of T15B22AHM3/I?
All T15B22AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with T15B22AHM3/I, 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 T15B22AHM3/I part is unused and in its original packaging.
Return procedure for T15B22AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T15B22AHM3/I Tags
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