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Vishay General Semiconductor - Diodes Division TPSMP12HM3/84A
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- Part No.:
- TPSMP12HM3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP12HM3/84A.pdf
- Description:
- TVS DIODE 9.72VWM 17.3VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,324
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Product details
Overview
TPSMP12HM3/84A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-220AA (SMP) package, designed for high-reliability overvoltage protection of signal lines and power rails. It features 12 V breakdown voltage (VBR = 10.8–13.2 V), 400 W peak pulse power (10/1000 µs), 17.3 A peak pulse current (IPPM), 17.3 V clamping voltage (VC), and AEC-Q101 qualification for automotive use.
For engineers reviewing the TPSMP12HM3/84A datasheet, TPSMP12HM3/84A pinout, TPSMP12HM3/84A application, or TPSMP12HM3/84A equivalent, key selection criteria include unidirectional clamping behavior, 185 °C junction temperature rating, low-profile 1.0 mm height, MSL Level 1 reflow compatibility, and verified performance under 10/1000 µs surge waveforms in automotive ECUs and sensor interfaces.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to achieve low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and lightning-induced transients. Its unidirectional polarity-cathode marked by color band-requires correct orientation in series with protected IC inputs or power pins.
The device operates within -65 °C to +185 °C junction temperature range and delivers stable clamping up to 17.3 V at 17.3 A, with <1.0 µA reverse leakage at 9.72 V stand-off voltage (VWM). It is rated for 40 A non-repetitive forward surge current (IFSM) and dissipates 2.5 W under steady-state conditions on infinite heatsink at 75 °C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 10.8 V / 13.2 V - ensures reliable triggering above normal operating voltage while avoiding false trips during transients |
| VWM | 9.72 V - maximum continuous reverse voltage before significant leakage; sets upper limit for protected circuit DC bias |
| VC @ IPPM | 17.3 V - clamped voltage during 10/1000 µs surge; defines worst-case stress seen by downstream ICs |
| PPPM | 400 W - peak pulse power handling capacity; determines survivability against ISO 7637-2 Pulse 1/2a/5a surges |
| IPPM | 17.3 A - peak surge current capability at VC; used to size PCB trace width and verify system-level energy absorption |
| TJ max. | +185 °C - enables operation in under-hood automotive environments without thermal derating penalties |
| Package | DO-220AA (SMP) - 1.0 mm typical height, halogen-free, RoHS-compliant, AEC-Q101 qualified surface-mount package |
Pinout & Package
TPSMP12HM3/84A is a two-terminal unidirectional TVS diode in DO-220AA (SMP) package. The cathode is marked by a color band; the anode is the unmarked terminal. Leads are matte tin plated and solderable per J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input/line side connection | Connected to source of transient (e.g., connector, bus line); conducts during forward-biased surge events |
| Cathode | Protected-side connection | Connected to load/IC input; provides low-impedance path to ground when reverse-biased beyond VBR |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, humidity testing, and mechanical shock |
| 185 °C junction rating | Supports placement near heat sources (e.g., power modules, engine control units) without thermal shutdown risk |
| 1.0 mm profile | Enables compact layout in space-constrained modules such as ADAS cameras and body control units |
| MSL Level 1 | Allows standard SMT reflow without moisture sensitivity concerns-no baking required prior to assembly |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ESD ±8 kV contact discharge) |
Applications
| Automotive Sensor Protection | Industrial CAN Bus Interface |
|---|---|
|
Use Scenario: Protecting analog output lines of pressure, temperature, and position sensors in engine bay modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor output pin and microcontroller ADC input. Use Value: Clamps ISO 7637-2 Pulse 5a (50 V, 100 ms) to ≤17.3 V, preventing ADC saturation and latch-up in 12 V systems. |
Use Scenario: Safeguarding CANH/CANL differential pair against load dump and inductive switching noise in factory automation PLCs. IC Role / Device Role / Timing Role: One TPSMP12HM3/84A per line (CANH and CANL), mounted close to connector entry point. Use Value: Limits transient voltage to 17.3 V while maintaining <1.0 µA leakage at 9.72 V, preserving bus signal integrity and common-mode range. |
| Consumer USB Power Input | Computer Peripheral Port Protection |
|
Use Scenario: Overvoltage protection on 5 V USB VBUS line in portable docking stations and power banks. IC Role / Device Role / Timing Role: Unidirectional TVS connected between VBUS and GND, upstream of USB controller and power switch. Use Value: Absorbs 400 W surges (10/1000 µs) without degradation, ensuring compliance with IEC 61000-4-5 Level 3 (1 kV line-earth) |
Use Scenario: ESD protection for HDMI, DisplayPort, or PCIe hot-plug connectors in workstations and gaming PCs. IC Role / Device Role / Timing Role: TVS placed on each high-speed data lane adjacent to connector footprint. Use Value: Sub-1 ns response time and 17.3 V clamping prevent bit errors and PHY damage during ±8 kV HBM ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/5A | DO-214AC (SMA) package; 400 W PPPM; VC = 19.9 V at 15.7 A; higher clamping voltage | Larger footprint (2.5 mm height); less suitable for ultra-thin automotive modules | Preferred where board space allows and higher VC margin is acceptable |
| TPSMAJ12A | Same DO-220AA package; identical VBR, VC, and PPPM; differs only in packaging code (tape/reel vs. bulk) | No functional difference; same electrical and thermal performance | Direct form-fit replacement if HM3/84A tape format is unavailable |
Compared with SMAJ12A-E3/5A, TPSMP12HM3/84A offers lower profile and tighter clamping, improving protection margin in space-constrained automotive designs; versus TPSMAJ12A, it shares identical performance but uses a different reel packaging specification (84A = 3000-piece 7″ reel).
Availability
TPSMP12HM3/84A is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial CAN networks, consumer USB power inputs, and computer peripheral port protection requiring stable component supply across production lifecycles.
Supply support for TPSMP12HM3/84A 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and automotive-grade validation.
The TPSMP12HM3/84A belongs to Vishay's eSMP® Series PAR® TVS family, engineered specifically for high-power-density, AEC-Q101-compliant transient suppression in harsh-environment automotive and industrial control systems.
FAQ
What is the breakdown voltage tolerance for TPSMP12HM3/84A?
The TPSMP12HM3/84A has a breakdown voltage (VBR) range of 10.8 V to 13.2 V at 1.0 mA test current, corresponding to ±10 % tolerance around the nominal 12 V rating. This tolerance is confirmed in the Electrical Characteristics table of Vishay document 88471 and applies directly to the TPSMP12HM3/84A variant.
Is TPSMP12HM3/84A suitable for bidirectional transient protection?
No, TPSMP12HM3/84A is strictly unidirectional. Its design supports clamping only in reverse-bias mode above VBR; forward conduction occurs at ~2.5 V (VF = 2.5 V at 25 A). For bidirectional protection, a separate symmetric TVS or back-to-back configuration would be required-TPSMP12HM3/84A itself does not provide symmetrical clamping.
Does TPSMP12HM3/84A meet automotive qualification standards?
Yes, TPSMP12HM3/84A is AEC-Q101 qualified and rated for TJ = -65 °C to +185 °C. It also meets MSL Level 1 per J-STD-020 and passes JESD 201 Class 2 whisker testing. These qualifications are explicitly stated in the Vishay datasheet 88471 for the HM3 base part number, which includes TPSMP12HM3/84A.
What is the maximum clamping voltage of TPSMP12HM3/84A under surge conditions?
The maximum clamping voltage (VC) of TPSMP12HM3/84A is 17.3 V at 17.3 A peak pulse current (IPPM) using the standard 10/1000 µs waveform. This value is measured per ANSI/IEEE C62.35 and is guaranteed across the full operating temperature range, making it critical for validating downstream IC voltage tolerances.
Can TPSMP12HM3/84A be used in DC power rail protection?
Yes, TPSMP12HM3/84A is commonly deployed for 12 V DC rail protection in automotive and industrial systems. With a 9.72 V stand-off voltage (VWM) and 17.3 V clamping, it protects downstream regulators and logic from load dump and inductive kickback while maintaining <1.0 µA leakage at rated VWM, minimizing standby power loss.
TPSMP12HM3/84A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- PAR®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 9.72V
- Voltage - Breakdown (Min):
- 10.8V
- Voltage - Clamping (Max) @ Ipp:
- 17.3V
- Current - Peak Pulse (10/1000µs):
- 17.3A
- Power - Peak Pulse:
- 300W
- 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-220AA (SMP)
TPSMP12HM3/84A FAQ
1.How can I place an order for TPSMP12HM3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP12HM3/84A 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 TPSMP12HM3/84A reliable?
The price and inventory of TPSMP12HM3/84A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP12HM3/84A is usually 5 days.
3.What payment methods are accepted for TPSMP12HM3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP12HM3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP12HM3/84A?
TPSMP12HM3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP12HM3/84A 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 TPSMP12HM3/84A?
For technical support, including TPSMP12HM3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP12HM3/84A requirements.
6.How does Aetrix verify that TPSMP12HM3/84A is sourced from the original manufacturer or authorized distributors?
All TPSMP12HM3/84A 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 TPSMP12HM3/84A meets industry standards.
7.What is the process for return or replacement of TPSMP12HM3/84A?
All TPSMP12HM3/84A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP12HM3/84A, 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 TPSMP12HM3/84A part is unused and in its original packaging.
Return procedure for TPSMP12HM3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP12HM3/84A Tags
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