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Vishay General Semiconductor - Diodes Division TPSMP12HM3/85A
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- Part No.:
- TPSMP12HM3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP12HM3/85A.pdf
- Description:
- TVS DIODE 9.72VWM 17.3VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,894
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Product details
Overview
TPSMP12HM3/85A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the PAR® family, designed for high-energy surge protection on DC power rails and signal lines. It features a 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), and clamps to ≤17.3 V at rated surge. It is AEC-Q101 qualified and rated for automotive-grade operation up to TJ = 185 °C.
For engineers reviewing the TPSMP12HM3/85A datasheet, TPSMP12HM3/85A pinout, TPSMP12HM3/85A application, or TPSMP12HM3/85A equivalent, this device is selected for robust overvoltage protection in space-constrained automotive ECUs, industrial sensor interfaces, and 12 V supply rail conditioning where low-profile DO-220AA packaging and MSL Level 1 reflow compatibility are critical.
Technical Context
The TPSMP12HM3/85A employs passivated anisotropic rectifier technology with optimized junction passivation for stable avalanche behavior under repetitive surge stress. Its unidirectional configuration enables integration into DC-biased circuits without reverse conduction concerns, and its low incremental surge resistance ensures minimal voltage overshoot during fast transients.
Designed for automotive-grade reliability, it supports continuous operation from –65 °C to +185 °C junction temperature and meets JESD201 Class 2 whisker resistance. The device is characterized with 10/1000 µs waveform testing per ANSI/IEEE C62.35 and derated linearly above 25 °C ambient per published curves.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage VBR | 10.8 V min / 13.2 V max at 1 mA - defines precise avalanche initiation threshold for predictable clamping onset |
| Stand-off Voltage VWM | 9.72 V - maximum continuous reverse voltage before leakage exceeds 1 µA, ensuring no false triggering on 12 V nominal rails |
| Clamping Voltage VC | ≤17.3 V at 17.3 A (10/1000 µs) - limits protected circuit voltage during surge, preserving downstream ICs rated for ≤20 V abs max |
| Peak Pulse Power PPPM | 400 W - sustains high-energy transients such as ISO 7637-2 Pulse 1/2a/5a in automotive environments |
| Operating Temperature Range | –65 °C to +185 °C - supports under-hood automotive placement and industrial high-temp enclosures without derating |
| Package | DO-220AA (SMP) - 1.0 mm typical height, 3.61 mm × 2.18 mm footprint, compatible with automated SMT placement and 260 °C reflow |
| AEC-Q101 Qualified | Yes - validated for automotive electronic modules requiring zero defect reliability and long-term parametric stability |
Pinout & Package
TPSMP12HM3/85A is housed in the DO-220AA (SMP) surface-mount package: a compact, low-profile, single-diode configuration with cathode indicated by a color band. The package features matte tin-plated leads compliant with J-STD-002 and JESD22-B102, and meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC input / line side terminal | Connected to protected line (e.g., 12 V supply); conducts forward during surge clamp when cathode is held at higher potential |
| Cathode | Reference / ground side terminal | Marked with color band; tied to system ground or low-impedance return path; establishes unidirectional clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation optimized design | Stable VBR tolerance (±10 %) and low parametric drift over 1000+ surge cycles at rated stress |
| TJ = 185 °C capability | Enables direct mounting near heat sources (e.g., motor drivers, power converters) without thermal derating penalties |
| Very low profile (1.0 mm typical height) | Reduces board stack height in slim automotive modules and portable industrial sensors with tight mechanical envelopes |
| MSL Level 1, 260 °C peak reflow | Eliminates moisture sensitivity handling requirements and supports standard lead-free assembly without baking |
| Uni-directional polarity | Suitable for DC-biased applications only; avoids reverse leakage issues common in bidirectional TVS on asymmetric rails |
Applications
| Automotive Body Control Module (BCM) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load dump and inductive switching spikes in vehicle door modules. IC Role / Device Role / Timing Role: Unidirectional TVS placed between LIN line and ground to clamp transients to ≤17.3 V while maintaining <1 µA leakage at 9.72 V. Use Value: Prevents latch-up or permanent damage to 5 V/3.3 V logic inputs during ISO 16750-2 pulses, enabling AEC-Q100-compliant system design. |
Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA transmitter outputs) against ESD and cable discharge events in factory-floor pressure/temperature sensors. IC Role / Device Role / Timing Role: Standoff-rated TVS connected across output-to-ground to absorb ±8 kV contact ESD (IEC 61000-4-2) without affecting 0.1 % FS accuracy. Use Value: Maintains signal integrity under repeated ESD stress while adding <0.5 pF capacitance - negligible impact on loop bandwidth up to 100 kHz. |
| 12 V Automotive Infotainment Power Rail | Motor Drive Gate Driver Protection |
Use Scenario: Clamping surges on the main 12 V input of head unit power management ICs subjected to ISO 7637-2 Pulse 5a (load dump). IC Role / Device Role / Timing Role: Primary TVS in parallel with bulk input capacitor, activated within <1 ns to limit voltage to ≤17.3 V during 400 W transient events. Use Value: Enables use of lower-voltage-rated input capacitors and PMICs, reducing BOM cost and PCB area versus higher-VRM alternatives. |
Use Scenario: Protecting high-side gate driver ICs from Miller-induced voltage spikes during MOSFET turn-off in BLDC motor controllers. IC Role / Device Role / Timing Role: Fast-response TVS placed between gate drive output and source, clamping dv/dt-induced overshoot before gate oxide breakdown. Use Value: Extends gate driver lifetime by limiting peak gate-source voltage to <20 V, preventing cumulative degradation in 100 kHz PWM applications. |
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 | DO-214AC package (higher profile: 2.3 mm), 400 W PPPM, VC = 19.9 V at 21.6 A - 15 % higher clamping voltage | Less suitable for ultra-low-profile automotive modules; acceptable for industrial PCBs with ≥2.3 mm clearance | Select SMAJ12A only if DO-214AC footprint is already standardized and 19.9 V clamping is within protected IC's absolute max rating. |
| TPSMA6.8A | Same DO-220AA package, but lower VBR (6.45–7.14 V), 300 W PPPM, VC = 10.5 V - optimized for 5 V systems | Not interchangeable on 12 V rails due to premature conduction; intended for USB, MCU I/O, or low-voltage logic protection | Choose TPSMA6.8A only for sub-9 V operating rails; TPSMP12HM3/85A remains mandatory for 12 V automotive and industrial power line protection. |
Compared with SMAJ12A and TPSMA6.8A, the TPSMP12HM3/85A uniquely combines AEC-Q101 qualification, 1.0 mm profile, and 17.3 V clamping on 12 V rails - making it the only option that satisfies simultaneous automotive reliability, space constraints, and voltage margin requirements.
Availability
TPSMP12HM3/85A is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interface design, and 12 V power rail protection requiring stable component supply across multi-year production cycles.
Supply support for TPSMP12HM3/85A 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The TPSMP12HM3/85A belongs to Vishay's PAR® (Protection Against Transients) series - engineered specifically for high-power-density, AEC-Q101-compliant surge suppression in harsh automotive and industrial environments.
FAQ
What is the exact breakdown voltage range for TPSMP12HM3/85A?
The TPSMP12HM3/85A has a guaranteed breakdown voltage (VBR) range of 10.8 V minimum to 13.2 V maximum, measured at 1 mA test current per ANSI/IEEE C62.35. This specification is confirmed in the Vishay datasheet Document Number 88471, Table on page 2, and applies strictly to the TPSMP12HM3/85A variant - not extrapolated from adjacent part numbers.
Is TPSMP12HM3/85A unidirectional or bidirectional?
TPSMP12HM3/85A is a unidirectional transient voltage suppressor, as explicitly stated in the "FEATURES" section of the Vishay datasheet. Its polarity is marked by a cathode band, and it is intended for DC-biased applications where reverse conduction is not required - unlike bidirectional variants such as TPSMP12CA.
Does TPSMP12HM3/85A meet AEC-Q101 requirements?
Yes, TPSMP12HM3/85A is AEC-Q101 qualified, as documented in the "FEATURES" and "MECHANICAL DATA" sections of the Vishay datasheet. The HM3 suffix denotes halogen-free, RoHS-compliant construction and full AEC-Q101 stress testing including temperature cycling, HTRB, and ESD.
What is the package type and dimensions of TPSMP12HM3/85A?
TPSMP12HM3/85A uses the DO-220AA (SMP) package: 3.61 mm × 2.18 mm outline with 1.0 mm typical height. Dimensions are specified in inches and millimeters on page 4 of the Vishay datasheet (Document Number 88471), and the package is rated MSL Level 1 with 260 °C peak reflow compatibility.
What is the clamping voltage of TPSMP12HM3/85A at its rated surge current?
The TPSMP12HM3/85A clamps to a maximum of 17.3 V at its rated peak pulse current of 17.3 A (10/1000 µs waveform), as listed in the "ELECTRICAL CHARACTERISTICS" table on page 2 of the Vishay datasheet. This value is measured under standardized test conditions and defines the upper voltage bound seen by protected circuitry during surge events.
TPSMP12HM3/85A 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)
TPSMP12HM3/85A FAQ
1.How can I place an order for TPSMP12HM3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP12HM3/85A 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 TPSMP12HM3/85A reliable?
The price and inventory of TPSMP12HM3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP12HM3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP12HM3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP12HM3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP12HM3/85A?
TPSMP12HM3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP12HM3/85A 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 TPSMP12HM3/85A?
For technical support, including TPSMP12HM3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP12HM3/85A requirements.
6.How does Aetrix verify that TPSMP12HM3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP12HM3/85A 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 TPSMP12HM3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP12HM3/85A?
All TPSMP12HM3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP12HM3/85A, 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 TPSMP12HM3/85A part is unused and in its original packaging.
Return procedure for TPSMP12HM3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP12HM3/85A Tags
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