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Vishay General Semiconductor - Diodes Division TPSMP33HM3/85A
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- Part No.:
- TPSMP33HM3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP33HM3/85A.pdf
- Description:
- TVS DIODE 26.8VWM 47.7VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:3,222
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Product details
Overview
TPSMP33HM3/85A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-220AA (SMP) package, designed for high-reliability automotive and industrial surge protection. It features 33 V breakdown voltage (VBR = 29.7–36.3 V), 400 W peak pulse power (10/1000 µs), 8.4 A peak pulse current (IPPM), 26.8 V stand-off voltage (VWM), and AEC-Q101 qualification for under-hood electronics.
For engineers reviewing the TPSMP33HM3/85A datasheet, TPSMP33HM3/85A pinout, TPSMP33HM3/85A application, or TPSMP33HM3/85A equivalent, key selection criteria include clamping voltage (VC = 47.7 V at IPPM), low-profile height (1.0 mm), MSL Level 1 moisture sensitivity, and ±5 % VBR tolerance confirmed for the "A" variant suffix.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology to achieve fast response time (<1 ns) and low incremental surge resistance. Its unidirectional configuration provides forward conduction capability with 2.5 V max forward voltage at 25 A, enabling robust overvoltage clamping on DC-biased lines such as automotive power rails and sensor supply inputs.
The device operates across -65 °C to +185 °C junction temperature range and is rated for 40 A non-repetitive forward surge current (IFSM). Its DO-220AA package supports automated placement and meets UL 94 V-0 flammability rating, with matte tin-plated terminals compliant to J-STD-002 and JESD 22-B102 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 29.7 V / 36.3 V - defines reliable avalanche initiation threshold under 10 mA test current |
| VWM | 26.8 V - maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 47.7 V - clamped voltage during 8.4 A 10/1000 µs surge, limiting downstream IC stress |
| PPPM | 400 W - peak pulse power handling capacity per standard 10/1000 µs waveform |
| TJ max | +185 °C - enables use in high-temperature automotive engine compartments |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling and HTRB |
| Package | DO-220AA (SMP) - 1.0 mm typical height, optimized for space-constrained PCB layouts |
Pinout & Package
DO-220AA (SMP) surface-mount package with cathode indicated by color band; 1.0 mm typical height, 2.54 mm lead pitch, and 3.61 mm × 2.67 mm footprint. Matte tin-plated terminals support reflow soldering up to 260 °C peak (MSL Level 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current input / surge return path | Connected to protected line's low-side or ground-referenced node during clamping |
| Cathode | Reverse-biased terminal / clamping output | Marked with color band; connects to positive rail or signal source to enable unidirectional clamping |
Key Features
| Feature | Design Value |
|---|---|
| Passivated anisotropic rectifier technology | Enables stable VBR stability over lifetime and temperature, critical for automotive ECU longevity |
| 185 °C junction rating | Supports operation in under-hood environments without derating below 150 °C ambient |
| 1.0 mm profile | Reduces board height in tight enclosures such as ADAS camera modules and motor control units |
| Low incremental surge resistance | Minimizes VC overshoot during fast transients, improving protection margin for 3.3 V/5 V logic |
| Uni-directional polarity | Allows integration into DC-biased circuits (e.g., 12 V battery lines) without blocking normal forward conduction |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: 12 V battery feed line in engine control unit exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS clamping device placed between battery input and DC-DC converter input stage. Use Value: Limits transient voltage to ≤47.7 V during 8.4 A surges, preventing damage to downstream 40 V-rated buck controller ICs. | Use Scenario: Analog output line of pressure sensor in factory automation PLC module. IC Role / Device Role / Timing Role: Signal-line protector on 0–10 V analog output, mounted adjacent to connector. Use Value: Clamps ESD (IEC 61000-4-2) and inductive switching spikes while maintaining <1 μA leakage at 26.8 V, preserving signal accuracy. |
| Consumer Power Adapter Input | Automotive Camera Module Supply |
Use Scenario: Secondary-side DC bus in USB-C PD adapter subject to capacitor discharge transients. IC Role / Device Role / Timing Role: Overvoltage clamp on 20 V output rail feeding GaN FET gate driver. Use Value: Absorbs 400 W surges without thermal runaway, leveraging 185 °C TJ rating for sustained duty-cycle reliability. | Use Scenario: 5 V supply rail in rear-view camera module mounted near exhaust system. IC Role / Device Role / Timing Role: Primary transient suppressor on imaging sensor and serializer IC power input. Use Value: Withstands 150 °C board temperature and passes AEC-Q101 HTGB testing, ensuring field failure rate <1 ppm. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ33A-E3/5AT | DO-214AC (SMA) package; 33 V VBR, 400 W PPPM, but 1.8 mm height and lower IPPM (7.5 A) | Larger footprint and height limit use in ultra-thin automotive modules | Choose when existing SMA layout exists and 1.0 mm height is not required |
| TPSMA6.8A-Q | AEC-Q101 qualified, but 6.8 V VBR; same DO-220AA package, 300 W PPPM, 11.5 A IPPM | Designed for 5 V logic rails, not 24–36 V systems requiring TPSMP33HM3/85A's higher VWM | Choose only for lower-voltage domains where 26.8 V stand-off is insufficient |
Compared with SMAJ33A-E3/5AT and TPSMA6.8A-Q, the TPSMP33HM3/85A delivers superior height efficiency (1.0 mm vs. 2.3 mm), higher surge current headroom (8.4 A vs. 7.5 A), and optimal 26.8 V stand-off for 24 V automotive systems-making it the preferred choice where space, temperature, and voltage alignment are critical.
Availability
TPSMP33HM3/85A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor nodes, consumer power adapters, and ADAS camera modules requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for TPSMP33HM3/85A 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, and protection devices with emphasis on automotive and industrial reliability.
The TPSMP series belongs to Vishay's eSMP® family of high-power-density TVS diodes, engineered specifically for AEC-Q101-compliant surge protection in space- and temperature-constrained automotive power systems.
FAQ
What is the exact breakdown voltage range for TPSMP33HM3/85A?
The TPSMP33HM3/85A has a guaranteed breakdown voltage (VBR) range of 29.7 V to 36.3 V at 10 mA test current, per the "A" variant specification in Vishay document 88471. This ±5 % tolerance ensures consistent clamping behavior across production lots and supports robust design margins for 24 V nominal systems.
Is TPSMP33HM3/85A suitable for automotive under-hood applications?
Yes, the TPSMP33HM3/85A is AEC-Q101 qualified and rated for operation from -65 °C to +185 °C junction temperature. Its DO-220AA package, passivated die, and 185 °C rating make it suitable for engine control units, transmission controllers, and other under-hood locations where thermal and reliability demands are highest.
What does the "HM3/85A" suffix indicate in TPSMP33HM3/85A?
The "HM3" denotes halogen-free, RoHS-compliant, AEC-Q101-qualified construction with JESD 201 Class 2 whisker resistance. The "/85A" specifies packaging in 13-inch plastic tape and reel with 10,000 units per reel-distinct from /84A (7-inch reel, 3,000 units) and critical for automated SMT line planning.
How does the clamping voltage of TPSMP33HM3/85A compare to its stand-off voltage?
The TPSMP33HM3/85A has a stand-off voltage (VWM) of 26.8 V and a maximum clamping voltage (VC) of 47.7 V at 8.4 A. This 20.9 V differential provides a 1.2× safety margin above typical 24 V automotive transients (e.g., ISO 7637-2 Pulse 5a), ensuring protected ICs remain within absolute maximum ratings during surge events.
Can TPSMP33HM3/85A be used in bidirectional signal protection?
No, the TPSMP33HM3/85A is strictly unidirectional and must be oriented with cathode toward the positive rail. For bidirectional protection (e.g., data lines), a separate symmetric TVS array or dual-diode configuration is required-this part is intended for DC-biased power and supply-line protection only.
TPSMP33HM3/85A 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):
- 26.8V
- Voltage - Breakdown (Min):
- 29.7V
- Voltage - Clamping (Max) @ Ipp:
- 47.7V
- Current - Peak Pulse (10/1000µs):
- 8.4A
- 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)
TPSMP33HM3/85A FAQ
1.How can I place an order for TPSMP33HM3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP33HM3/85A 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 TPSMP33HM3/85A reliable?
The price and inventory of TPSMP33HM3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP33HM3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP33HM3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP33HM3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP33HM3/85A?
TPSMP33HM3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP33HM3/85A 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 TPSMP33HM3/85A?
For technical support, including TPSMP33HM3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP33HM3/85A requirements.
6.How does Aetrix verify that TPSMP33HM3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP33HM3/85A 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 TPSMP33HM3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP33HM3/85A?
All TPSMP33HM3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP33HM3/85A, 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 TPSMP33HM3/85A part is unused and in its original packaging.
Return procedure for TPSMP33HM3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP33HM3/85A Tags
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