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Vishay General Semiconductor - Diodes Division TPSMP39HM3/85A
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- Part No.:
- TPSMP39HM3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP39HM3/85A.pdf
- Description:
- TVS DIODE 31.6VWM 56.4VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:5,775
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Product details
Overview
TPSMP39HM3/85A 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 ICs. It features a 35.1 V to 42.9 V breakdown voltage range, 56.4 V clamping voltage at 7.1 A peak pulse current, 400 W peak pulse power rating, and AEC-Q101 qualification for automotive use.
For engineers reviewing the TPSMP39HM3/85A datasheet, TPSMP39HM3/85A pinout, TPSMP39HM3/85A application, or TPSMP39HM3/85A equivalent, key selection criteria include unidirectional polarity, 31.6 V stand-off voltage, 1.0 μA max reverse leakage at VWM, 185 °C junction temperature capability, and MSL Level 1 reflow compatibility.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology optimized for low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and lightning-induced transients per IEC 61000-4-2 and ISO 16750-2. Its 1.0 mm profile supports dense PCB layouts in space-constrained automotive and industrial modules.
The device operates with uni-directional polarity (cathode marked), requires no external biasing, and delivers stable clamping performance across -65 °C to +185 °C ambient, validated under AEC-Q101 stress testing including temperature cycling, HTRB, and HTGB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR Min/Max | 35.1 V / 42.9 V - ensures reliable triggering above system operating voltage while avoiding false trips during normal transients |
| VWM | 31.6 V - maximum continuous reverse working voltage compatible with 24 V automotive supply rails |
| VC @ IPPM | 56.4 V - clamping voltage limits downstream component stress during 10/1000 µs surge events |
| IPPM | 7.1 A - peak pulse current capacity derived from 400 W PPPM rating at specified waveform |
| TJ max | +185 °C - enables operation in under-hood automotive environments without derating |
| Leakage @ VWM | 1.0 μA - minimal standby power loss and signal integrity impact on protected lines |
| Package | DO-220AA (SMP) - surface-mount footprint with 0.142" × 0.086" body and 1.0 mm height for automated assembly |
Pinout & Package
TPSMP39HM3/85A is housed in a two-terminal DO-220AA (SMP) package with cathode indicated by a color band. The device has no internal circuitry beyond the PN junction; terminals are symmetrically arranged for bidirectional layout flexibility despite unidirectional function.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path | Connected to lower-potential side (e.g., ground or return line) during clamping |
| Cathode | Reverse-biased terminal | Marked with color band; connects to protected line requiring overvoltage clamping |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and mechanical shock |
| MSL Level 1 rating | Supports lead-free reflow up to 260 °C peak without moisture-related damage |
| 185 °C junction rating | Enables deployment in engine control units and powertrain modules without thermal derating |
| Low-profile 1.0 mm height | Reduces board-level mechanical interference in stacked or shielded assemblies |
| Halogen-free & RoHS-compliant | Meets automotive environmental compliance requirements and end-of-life recycling standards |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and CAN node power inputs against load dump and jump-start surges in vehicle ECUs. IC Role / Device Role / Timing Role: Unidirectional TVS clamp placed between battery rail and regulator input to limit transient voltage before LDO stage. Use Value: Withstands 400 W pulses and maintains <56.4 V clamping, preventing regulator latch-up and ensuring ASIL-B functional safety compliance. | Use Scenario: Safeguarding analog outputs of pressure/temperature sensors in factory automation PLC I/O modules. IC Role / Device Role / Timing Role: Standoff protection element on 4–20 mA current loop output lines exposed to field wiring ESD and inductive kickback. Use Value: 1.0 μA leakage at 31.6 V VWM preserves loop accuracy; 7.1 A IPPM handles 2 kV ESD per IEC 61000-4-2. |
| Consumer USB Port ESD Protection | Computer Peripheral Power Rail Clamping |
Use Scenario: Shielding USB 2.0 data lines and VBUS in automotive infotainment head units from human-body-model ESD events. IC Role / Device Role / Timing Role: Low-capacitance TVS placed directly at connector to shunt ESD energy before USB transceiver input pins. Use Value: Fast sub-nanosecond response and 56.4 V clamping prevent transceiver latch-up while maintaining signal integrity at 480 Mbps. | Use Scenario: Suppressing switching noise and cross-talk surges on +12 V auxiliary rails powering PCIe add-in cards and storage controllers. IC Role / Device Role / Timing Role: Primary overvoltage clamp on secondary-side DC distribution net upstream of point-of-load converters. Use Value: 400 W PPPM rating absorbs multi-pulse transients from adjacent SMPS stages without degradation over 10⁵ 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 |
|---|---|---|---|
| SMAJ36A-E3/5AT | DO-214AC (SMA) package; 36 V VWM; 58.1 V VC @ 6.9 A; 400 W PPPM; same AEC-Q101 grade | Larger 2.3 mm height increases board clearance risk in ultra-thin modules | Select when existing SMA footprint is fixed and 1.0 mm height constraint does not apply |
| TPSMA6.8A-Q | DO-214AC package; 6.8 V VWM; 11.2 V VC @ 35.7 A; 400 W PPPM; AEC-Q101 qualified | Lower voltage rating suits 5 V logic rails but cannot protect 24 V systems | Choose only for 3.3 V/5 V interface protection where TPSMP39HM3/85A's 31.6 V VWM would be excessive |
Compared with SMAJ36A-E3/5AT and TPSMA6.8A-Q, the TPSMP39HM3/85A provides identical 400 W surge handling in a 44 % lower profile package, making it optimal for next-generation automotive ADAS modules where Z-axis space is constrained and 24 V rail protection is required.
Availability
TPSMP39HM3/85A is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, consumer USB port protection, and computer peripheral power rail clamping requiring stable component supply and long-term lifecycle support.
Supply support for TPSMP39HM3/85A 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, MOSFETs, optoelectronics, and passive components with emphasis on high-reliability and automotive-grade solutions.
The TPSMP series belongs to Vishay's eSMP® family of high-power-density TVS diodes, engineered specifically for AEC-Q101-compliant overvoltage protection in harsh automotive and industrial environments.
FAQ
What is the breakdown voltage range of the TPSMP39HM3/85A?
The TPSMP39HM3/85A has a guaranteed breakdown voltage (VBR) range of 35.1 V to 42.9 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This range ensures robust triggering margin above its 31.6 V stand-off voltage while accommodating process variation and temperature drift across the full -65 °C to +185 °C operating range. The TPSMP39HM3/85A maintains this specification under AEC-Q101 stress conditions.
Is the TPSMP39HM3/85A suitable for automotive applications?
Yes, the TPSMP39HM3/85A is AEC-Q101 qualified and rated for operation up to +185 °C junction temperature, making it suitable for under-hood and transmission-control applications. Its DO-220AA package meets MSL Level 1 for lead-free reflow, and its halogen-free, RoHS-compliant construction satisfies automotive environmental requirements. The TPSMP39HM3/85A is explicitly listed in Vishay's automotive-grade product documentation.
What is the clamping voltage of the TPSMP39HM3/85A at its rated peak pulse current?
The TPSMP39HM3/85A exhibits a maximum clamping voltage (VC) of 56.4 V at its rated peak pulse current (IPPM) of 7.1 A, tested with a 10/1000 µs waveform. This value is measured under standardized conditions per IEC 61000-4-5 and defines the upper voltage limit imposed on protected circuits during surge events. The TPSMP39HM3/85A maintains this clamping performance across its full temperature range.
Does the TPSMP39HM3/85A have unidirectional or bidirectional polarity?
The TPSMP39HM3/85A is a unidirectional TVS diode, with polarity indicated by a cathode band on the DO-220AA package. It conducts only during reverse-bias overvoltage events and blocks forward current like a standard rectifier. This configuration is appropriate for protecting DC power rails and single-ended signal lines where polarity is fixed. The TPSMP39HM3/85A is not rated for bidirectional operation.
What packaging option does the TPSMP39HM3/85A use for volume shipment?
The TPSMP39HM3/85A is supplied in 13-inch diameter plastic tape and reel format, with a base quantity of 10,000 pieces per reel. The "85A" suffix in the part number explicitly denotes this packaging variant, which is optimized for high-speed pick-and-place assembly. The TPSMP39HM3/85A reel meets J-STD-002 and JESD 22-B102 solderability standards and supports automated optical inspection.
TPSMP39HM3/85A 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):
- 31.6V
- Voltage - Breakdown (Min):
- 35.1V
- Voltage - Clamping (Max) @ Ipp:
- 56.4V
- Current - Peak Pulse (10/1000µs):
- 7.1A
- 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)
TPSMP39HM3/85A FAQ
1.How can I place an order for TPSMP39HM3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP39HM3/85A 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 TPSMP39HM3/85A reliable?
The price and inventory of TPSMP39HM3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP39HM3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP39HM3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP39HM3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP39HM3/85A?
TPSMP39HM3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP39HM3/85A 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 TPSMP39HM3/85A?
For technical support, including TPSMP39HM3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP39HM3/85A requirements.
6.How does Aetrix verify that TPSMP39HM3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP39HM3/85A 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 TPSMP39HM3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP39HM3/85A?
All TPSMP39HM3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP39HM3/85A, 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 TPSMP39HM3/85A part is unused and in its original packaging.
Return procedure for TPSMP39HM3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP39HM3/85A Tags
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