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Vishay T15B22AHM3/H
- Part No.:
- T15B22AHM3/H
- Manufacturer:
- Vishay
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
T15B22AHM3/H.pdf
- Description:
- 1.5KW,22V 5%,SMB PAR
- Quantity:
- Payment:
- Shipping:
Inventory:6,402
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Product details
Overview
T15B22AHM3/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 30.6 V under 50.7 A surge, and operates up to 185 °C junction temperature - deployed on signal lines of automotive sensor units and MOSFET gate drivers.
For engineers reviewing the T15B22AHM3/H datasheet, T15B22AHM3/H pinout, T15B22AHM3/H application, or T15B22AHM3/H equivalent, key selection criteria include its AEC-Q101 qualification, SMB (DO-214AA) package compatibility, 22 V nominal breakdown voltage, and 10.0 μA max reverse leakage at 18.8 V stand-off voltage.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology to achieve stable clamping performance across -65 °C to +185 °C operating range. Its unidirectional polarity and 0.084 %/°C temperature coefficient of VBR enable predictable voltage threshold shift in high-temperature automotive environments.
The device meets IEC 61000-4-2 ESD immunity (±30 kV contact/air discharge) and is rated for MSL Level 1 reflow (260 °C peak). Its 1500 W peak pulse power rating is defined per 10/1000 μs waveform with non-repetitive surge capability derated above 25 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 20.9 / 22.0 / 23.1 V - defines precise breakdown onset for reliable overvoltage triggering |
| VWM | 18.8 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA |
| VC @ IPPM | 30.6 V - clamping voltage at 50.7 A peak pulse current, limiting downstream stress |
| PPPM | 1500 W - peak pulse power handling capability under standardized 10/1000 μs transient |
| TJ max | +185 °C - enables operation in under-hood automotive locations without thermal derating |
| ESD Rating | ±30 kV (IEC 61000-4-2) - protects against human-body-model and contact-discharge events |
| AEC-Q101 | Qualified - certified for automotive electronic systems per stress-test requirements |
Pinout & Package
Package: SMB (DO-214AA), surface-mount, halogen-free, RoHS-compliant, matte tin-plated terminals, cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Anode-to-cathode conduction path during overvoltage | Connected to protected line; conducts when transient exceeds VBR, shunting energy to ground |
| Anode | Reference/return path for clamping current | Typically tied to system ground or low-impedance return plane to complete surge current path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Enables stable VBR and low leakage over lifetime and temperature cycling |
| 185 °C junction rating | Supports placement near heat sources in engine control modules and ADAS ECUs |
| MSL Level 1 (260 °C peak) | Permits single-pass lead-free reflow without moisture-induced damage |
| Unidirectional configuration | Protects DC-biased lines (e.g., CAN, LIN, sensor supply rails) without forward-conduction interference |
| Low clamping ratio (VC/VBR ≈ 1.39) | Minimizes overvoltage overshoot during fast transients, reducing risk to downstream ICs |
Applications
| Automotive Sensor Signal Protection | Power MOSFET Gate Protection |
|---|---|
Use Scenario: Protecting analog output lines of pressure, temperature, or position sensors in engine bay modules exposed to load-dump and inductive switching noise. IC Role / Device Role / Timing Role: TVS diode placed between sensor output and microcontroller ADC input to clamp transients before signal conditioning stage. Use Value: Prevents ADC saturation and latch-up by limiting voltage to ≤30.6 V during 50.7 A surges, preserving measurement integrity. | Use Scenario: Safeguarding gate-source terminals of high-side N-channel MOSFETs in automotive body control modules subjected to ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS connected between gate and source to absorb negative-going spikes induced by inductive loads. Use Value: Maintains gate oxide reliability by suppressing VGS excursions beyond ±20 V, avoiding unintended turn-on or dielectric stress. |
| CAN Bus Line Protection | 12 V Power Rail Transient Suppression |
Use Scenario: Shielding CAN_H/CAN_L differential pair in infotainment head units from ESD and battery dump events in vehicle networks. IC Role / Device Role / Timing Role: One T15B22AHM3/H per line (CAN_H to ground, CAN_L to ground), leveraging low capacitance and fast response. Use Value: Clamps transients within nanoseconds while adding <1 pF junction capacitance, preserving signal integrity up to 1 Mbps. | Use Scenario: Guarding 12 V supply inputs of telematics control units against load-dump surges (ISO 16750-2, 35 V/1 s). IC Role / Device Role / Timing Role: Parallel-connected TVS on main power rail upstream of DC-DC converter input filter. Use Value: Absorbs 1500 W peak energy without failure, maintaining regulated output during 10/1000 μs transients. |
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 lower PPPM = 600 W and no AEC-Q101 qualification | Rated for industrial/commercial use only; not validated for automotive temperature or reliability stress tests | Select when cost sensitivity outweighs automotive qualification requirements |
| TPSMA6L22A | 22 V VBR, 1500 W PPPM, AEC-Q101 qualified, but higher VC = 35.5 V at same IPPM | Clamps ~4.9 V higher than T15B22AHM3/H, increasing stress on downstream components | Choose if board layout requires alternate footprint compatibility (SMA vs SMB) and higher clamping is acceptable |
Compared with SMBJ22A and TPSMA6L22A, the T15B22AHM3/H offers superior clamping performance (30.6 V vs ≥35.5 V) and full automotive qualification in the industry-standard SMB outline - critical for safety-critical sensor and communication circuits where voltage margin and long-term reliability are non-negotiable.
Availability
T15B22AHM3/H is available at Aetrix Electronics and suitable for automotive sensor protection, MOSFET gate safeguarding, and CAN bus line hardening requiring stable component supply across production lifecycles.
Supply support for T15B22AHM3/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 designs and manufactures discrete semiconductors including diodes, rectifiers, and TVS devices with emphasis on reliability, power handling, and automotive compliance.
The T15B22AHM3/H belongs to Vishay's PAR® family of high-power surface-mount TVS diodes, engineered specifically for harsh-environment transient suppression in automotive electronics and industrial control systems.
FAQ
What is the maximum clamping voltage of the T15B22AHM3/H under peak surge conditions?
The T15B22AHM3/H exhibits a maximum clamping voltage (VC) of 30.6 V when subjected to its rated peak pulse current of 50.7 A using the standard 10/1000 μs waveform. This value is measured at TA = 25 °C and ensures downstream components remain within safe voltage limits during transient events. The T15B22AHM3/H maintains this clamping performance across its full operating temperature range due to its low 0.084 %/°C VBR temperature coefficient.
Is the T15B22AHM3/H qualified for automotive applications?
Yes, the T15B22AHM3/H is AEC-Q101 qualified and rated for operation from -65 °C to +185 °C junction temperature. It meets IEC 61000-4-2 ESD immunity (±30 kV contact/air), MSL Level 1 reflow profile (260 °C peak), and is constructed with halogen-free, RoHS-compliant materials - all verified per Vishay's automotive qualification protocol. The T15B22AHM3/H is intended for deployment in engine control units, ADAS sensors, and body electronics.
What does the "HM3" suffix indicate in T15B22AHM3/H?
"HM3" denotes Vishay's halogen-free, RoHS-compliant, AEC-Q101-qualified construction with matte tin-plated leads that pass JESD 201 Class 2 whisker testing. The "/H" suffix specifies packaging in 7" diameter plastic tape and reel, with 750 units per reel. This marking confirms the T15B22AHM3/H meets stringent automotive material and assembly reliability standards required for modern vehicle platforms.
How does the T15B22AHM3/H compare to bidirectional TVS diodes in CAN bus protection?
The T15B22AHM3/H is unidirectional and optimized for DC-biased lines like 12 V supplies or single-ended sensor outputs. In CAN bus protection, two T15B22AHM3/H devices (one per line) provide lower clamping voltage and faster response than most bidirectional equivalents - critical for preserving signal integrity at 1 Mbps. Unlike bidirectional TVS diodes, the T15B22AHM3/H avoids forward conduction during normal bus signaling, eliminating potential distortion of differential waveforms.
What is the reverse leakage current specification for the T15B22AHM3/H at its stand-off voltage?
At its maximum stand-off voltage (VWM) of 18.8 V and ambient temperature of 25 °C, the T15B22AHM3/H guarantees a maximum reverse leakage current (IR) of 1.0 μA. At elevated temperature (TJ = 150 °C), leakage remains ≤10.0 μA - ensuring minimal power loss and signal degradation in always-on automotive subsystems. This low leakage is maintained across the full VWM range and supports precision analog front-end protection in the T15B22AHM3/H.
T15B22AHM3/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):
- 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/H FAQ
1.How can I place an order for T15B22AHM3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for T15B22AHM3/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 T15B22AHM3/H reliable?
The price and inventory of T15B22AHM3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T15B22AHM3/H is usually 5 days.
3.What payment methods are accepted for T15B22AHM3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T15B22AHM3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T15B22AHM3/H?
T15B22AHM3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T15B22AHM3/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 T15B22AHM3/H?
For technical support, including T15B22AHM3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T15B22AHM3/H requirements.
6.How does Aetrix verify that T15B22AHM3/H is sourced from the original manufacturer or authorized distributors?
All T15B22AHM3/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 T15B22AHM3/H meets industry standards.
7.What is the process for return or replacement of T15B22AHM3/H?
All T15B22AHM3/H units undergo pre-shipment inspection (PSI). If there is an issue with T15B22AHM3/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 T15B22AHM3/H part is unused and in its original packaging.
Return procedure for T15B22AHM3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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