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Vishay General Semiconductor - Diodes Division TPSMP39AHM3/85A
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- Part No.:
- TPSMP39AHM3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP39AHM3/85A.pdf
- Description:
- TVS DIODE 33.3VWM 53.9VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,721
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Product details
Overview
TPSMP39AHM3/85A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-220AA (SMP) package, designed for high-reliability automotive and industrial overvoltage protection. It features 37.1 V to 41.0 V breakdown voltage (VBR), 5.0 μA max reverse leakage at 33.3 V (VWM), 7.4 A peak pulse current (IPPM), and clamps to ≤53.9 V under 10/1000 μs surge - protecting sensor signal lines and drive transistors in engine control units.
For engineers reviewing the TPSMP39AHM3/85A datasheet, TPSMP39AHM3/85A pinout, TPSMP39AHM3/85A application, or TPSMP39AHM3/85A equivalent, key selection criteria include its AEC-Q101 qualification, 185 °C junction temperature rating, low-profile 1.0 mm height, MSL Level 1 moisture sensitivity, and uni-directional clamping behavior for DC-biased lines.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for high-power-density surge suppression. Its unidirectional architecture enables precise clamping on positively biased signal or power rails, with fast response time (<1 ns) and low incremental surge resistance ensuring minimal let-through voltage during ESD or load-dump transients.
The device operates across -65 °C to +185 °C and is rated for 400 W peak pulse power (10/1000 μs waveform) at 25 °C, derating linearly above TA = 25 °C per Fig. 2. Its DO-220AA package supports automated placement and meets UL 94 V-0 flammability requirements with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 37.1 V / 41.0 V - defines reliable turn-on threshold for overvoltage detection and clamping |
| VWM | 33.3 V - maximum continuous reverse operating voltage before leakage exceeds 5.0 μA |
| IPPM | 7.4 A - peak surge current it safely clamps without failure under 10/1000 μs waveform |
| VC @ IPPM | ≤53.9 V - clamped voltage seen by protected circuit during full-rated surge event |
| TJ max | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures |
| Package | DO-220AA (SMP) - 1.0 mm typical height, 3.61 mm × 2.18 mm footprint, MSL Level 1 |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
TPSMP39AHM3/85A is a two-terminal unidirectional TVS diode in DO-220AA (SMP) surface-mount package. The cathode is marked by a color band on the body; polarity must be observed during PCB layout to ensure correct clamping direction on DC-biased lines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | DC return path / low-side connection | Connected to ground or lower-potential rail; completes conduction path during reverse-biased surge |
| Cathode | Protected line input / high-side connection | Connected to signal/power line being protected; color band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| Passivated anisotropic rectifier technology | Enables stable VBR tolerance (±5 %) and low leakage (<5 μA) over lifetime and temperature |
| 185 °C junction rating | Supports placement near heat sources (e.g., power MOSFETs, ECUs) without derating penalties |
| 1.0 mm profile | Reduces board space and enables use in ultra-thin modules such as ADAS camera housings and battery management sensors |
| MSL Level 1 (260 °C peak) | Eliminates pre-bake requirement for reflow assembly, lowering manufacturing cost and cycle time |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates including EU RoHS Directive 2011/65/EU and JEDEC J-STD-201 Class 2 whisker resistance |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Protecting 5 V or 12 V sensor supply lines (e.g., MAP, O2, crankshaft position sensors) from ISO 7637-2 load dump and ISO 10605 ESD events. IC Role / Device Role / Timing Role: Uni-directional TVS clamp placed between sensor VCC and ground, triggered only during positive overvoltage excursions. Use Value: Limits transient voltage to ≤53.9 V, preventing damage to downstream LDOs and microcontroller I/O pins while maintaining <5 μA leakage at 33.3 V nominal bias. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loop transmitters) against field-induced surges in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: High-speed clamping element on the transmitter's output node, absorbing 10/1000 μs transients up to 400 W without degradation. Use Value: Maintains signal integrity with <1 ns response and 7.4 A IPPM, enabling robust operation in electrically noisy environments like motor drives and welding equipment. |
| Automotive Infotainment Power Rail | Consumer Appliance Motor Driver Protection |
Use Scenario: Guarding 3.3 V or 5 V USB/MIPI power domains in head unit SoCs against coupling from adjacent RF or switching power supplies. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) uni-directional suppressor placed at SoC power entry point to shunt fast transients to ground. Use Value: Clamps to ≤53.9 V within nanoseconds while adding negligible loading to high-frequency power rails due to minimal junction capacitance. | Use Scenario: Shielding gate drivers and logic-level inputs of BLDC motor controllers in smart home appliances (e.g., washing machines, HVAC fans) from inductive kickback. IC Role / Device Role / Timing Role: Surge-absorbing component across driver supply rails or between gate and source, activated only during positive voltage spikes. Use Value: Withstands 40 A IFSM non-repetitive surge and delivers 400 W peak pulse power, extending controller lifetime in cyclic load 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 |
|---|---|---|---|
| SMAJ36A-E3/5AT | DO-214AC (SMA) package; 36 V VWM, 58.1 V VC @ 6.2 A; 400 W rating; same AEC-Q101 qualification | Larger 2.5 mm height and 4.5 mm × 2.7 mm footprint; less suitable for ultra-thin automotive modules | Select when legacy SMA footprint compatibility is required and board height budget allows ≥2.5 mm |
| TPSMA6.8A-Q | DO-214AC (SMA) package; 6.8 V VWM, 11.2 V VC @ 32.2 A; 400 W rating; AEC-Q101 qualified | Lower voltage grade; not interchangeable for 33.3 V operating rail; intended for 5 V logic protection | Use only for sub-12 V systems; not a functional replacement for TPSMP39AHM3/85A in 33 V applications |
Compared with SMAJ36A-E3/5AT and TPSMA6.8A-Q, TPSMP39AHM3/85A offers identical 400 W surge capability but in a 1.0 mm low-profile DO-220AA package-critical for space-constrained automotive modules-while maintaining tighter VBR tolerance (±5 %) and lower leakage at elevated temperature.
Availability
TPSMP39AHM3/85A is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and consumer appliance motor control requiring stable component supply, AEC-Q101 compliance, and long-term lifecycle support.
Supply support for TPSMP39AHM3/85A 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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, power density, and automotive-grade qualification.
The TPSMP series belongs to Vishay's eSMP® family of high-power-density surface-mount TVS diodes, engineered specifically for AEC-Q101-compliant overvoltage protection in harsh-environment automotive and industrial systems.
FAQ
What is the breakdown voltage range for TPSMP39AHM3/85A?
The TPSMP39AHM3/85A has a specified breakdown voltage (VBR) range of 37.1 V minimum to 41.0 V maximum at 1.0 mA test current, per Vishay Document Number 88471. This ±5 % tolerance ensures consistent clamping behavior across production lots and temperature extremes, making TPSMP39AHM3/85A suitable for precision 33 V rail protection where overvoltage margin must remain tightly controlled.
Is TPSMP39AHM3/85A qualified for automotive applications?
Yes, TPSMP39AHM3/85A is AEC-Q101 qualified and rated for operation from -65 °C to +185 °C junction temperature. Its construction includes halogen-free molding compound, matte tin-plated leads compliant with JESD 22-B102, and MSL Level 1 handling - all verified per automotive stress test standards. These attributes make TPSMP39AHM3/85A appropriate for under-hood and infotainment applications where reliability under thermal and mechanical stress is mandatory.
What is the clamping voltage of TPSMP39AHM3/85A under surge conditions?
At its rated peak pulse current of 7.4 A (IPPM) with a 10/1000 μs waveform, TPSMP39AHM3/85A clamps to a maximum of 53.9 V. This value is measured per ANSI/IEEE C62.35 and represents the upper limit of voltage imposed on the protected circuit during worst-case surge events - critical for ensuring downstream ICs (e.g., CAN transceivers, ADC front-ends) remain within absolute maximum ratings.
Does TPSMP39AHM3/85A have bidirectional capability?
No, TPSMP39AHM3/85A is strictly unidirectional. Its electrical characteristics - including VBR, VWM, and IPPM - are defined only for reverse-bias operation, with cathode identified by a color band. It must be oriented with cathode toward the protected line and anode to ground or reference potential. Bidirectional variants (e.g., TPSMP39CA) are separate part numbers and not interchangeable with TPSMP39AHM3/85A.
What packaging configuration does TPSMP39AHM3/85A ship in?
TPSMP39AHM3/85A ships in 13-inch diameter plastic tape and reel format, with a base quantity of 10,000 pieces per reel (ordering code "85A"). The device is compatible with standard SMT pick-and-place equipment, and its DO-220AA package meets J-STD-020 MSL Level 1 - permitting exposure to ambient conditions indefinitely prior to reflow without baking.
TPSMP39AHM3/85A 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):
- 33.3V
- Voltage - Breakdown (Min):
- 37.1V
- Voltage - Clamping (Max) @ Ipp:
- 53.9V
- Current - Peak Pulse (10/1000µs):
- 7.4A
- Power - Peak Pulse:
- 400W
- 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)
TPSMP39AHM3/85A FAQ
1.How can I place an order for TPSMP39AHM3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP39AHM3/85A 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 TPSMP39AHM3/85A reliable?
The price and inventory of TPSMP39AHM3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP39AHM3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP39AHM3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP39AHM3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP39AHM3/85A?
TPSMP39AHM3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP39AHM3/85A 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 TPSMP39AHM3/85A?
For technical support, including TPSMP39AHM3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP39AHM3/85A requirements.
6.How does Aetrix verify that TPSMP39AHM3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP39AHM3/85A 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 TPSMP39AHM3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP39AHM3/85A?
All TPSMP39AHM3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP39AHM3/85A, 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 TPSMP39AHM3/85A part is unused and in its original packaging.
Return procedure for TPSMP39AHM3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP39AHM3/85A Tags
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