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Vishay General Semiconductor - Diodes Division TPSMP20AHM3/84A
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- Part No.:
- TPSMP20AHM3/84A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP20AHM3/84A.pdf
- Description:
- TVS DIODE 17.1VWM 27.7VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,942
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Product details
Overview
TPSMP20AHM3/84A 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 20 V nominal breakdown voltage (VBR = 19.0–21.0 V), 400 W peak pulse power (10/1000 µs), 14.4 A peak pulse current (IPPM), and clamps to ≤27.7 V at rated surge, operating up to +185 °C junction temperature.
For engineers reviewing the TPSMP20AHM3/84A datasheet, TPSMP20AHM3/84A pinout, TPSMP20AHM3/84A application, or TPSMP20AHM3/84A equivalent, this device is selected for robust ESD/surge protection on 12 V–24 V DC power rails and signal lines where low-profile mounting, AEC-Q101 qualification, and MSL Level 1 reflow compatibility are required.
Technical Context
This TVS uses passivated anisotropic rectifier technology with optimized junction passivation for stable clamping under repetitive surge stress. Its unidirectional configuration enables integration into DC-biased circuits such as automotive power supplies and sensor interfaces without reverse conduction concerns.
The device delivers fast response time (<1 ns), low incremental surge resistance, and excellent clamping ratio (VC/VBR ≈ 1.46), ensuring reliable protection of downstream ICs like microcontrollers, CAN transceivers, and gate drivers against ISO 7637-2 and IEC 61000-4-5 threats.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 19.0 V / 21.0 V - Ensures precise triggering above normal 12 V–16 V system operating voltage while avoiding false trips. |
| VWM | 17.1 V - Maximum continuous reverse stand-off voltage compatible with 16 V nominal automotive systems. |
| IPPM (10/1000 µs) | 14.4 A - Sustains defined surge current without degradation when mounted on 5 mm × 5 mm copper pads. |
| VC @ IPPM | ≤27.7 V - Clamping voltage limits protected circuit stress to safe levels during worst-case transients. |
| TJ max | +185 °C - Enables operation in under-hood automotive environments and high-power industrial enclosures. |
| PPPM | 400 W - High power density supports protection against severe load dump and inductive switching events. |
| Leakage @ VWM | ≤1.0 µA at 25 °C - Minimizes standby power loss in battery-critical applications. |
Pinout & Package
DO-220AA (SMP) surface-mount package: ultra-low profile (1.0 mm typical height), halogen-free, RoHS-compliant, AEC-Q101 qualified, with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102. Cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal | Connected to lower-potential side (e.g., GND or return path) in unidirectional clamp configuration. |
| Cathode | Reverse-biased clamping terminal | Connected to protected line (e.g., 12 V rail or signal input); conducts only during overvoltage events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance per JEDEC standards. |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow assembly without moisture-related damage or popcorn effect. |
| 185 °C maximum junction temperature | Supports sustained operation in engine control units, ADAS modules, and industrial motor drives with minimal derating. |
| Low incremental surge resistance | Reduces VC overshoot during fast-rising transients, improving protection margin for sensitive logic inputs. |
| Uni-directional architecture | Eliminates reverse leakage concerns in DC-biased applications while maintaining optimal clamping performance. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: Protecting 12 V supply lines in body control modules (BCM), lighting controllers, and infotainment head units against load dump and jump-start surges. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed between power input and local regulator or MCU power domain. Use Value: Limits transient voltage to ≤27.7 V, preventing latch-up or permanent damage to 3.3 V/5 V LDOs and microcontrollers rated for ≤30 V absolute maximum. |
Use Scenario: Safeguarding analog and digital sensor outputs (e.g., pressure, temperature, position sensors) in factory automation PLCs and robotic arms. IC Role / Device Role / Timing Role: Signal-line TVS connected between sensor output and ADC input or isolation barrier, referenced to local ground. Use Value: Sub-1 ns response ensures clamping before transient energy couples into precision front-end amplifiers or sigma-delta converters. |
| Automotive CAN Bus Protection | DC Motor Drive Control Protection |
|
Use Scenario: Secondary protection on CAN_H/CAN_L lines downstream of common-mode choke, especially in gateway ECUs exposed to external harness coupling. IC Role / Device Role / Timing Role: Low-capacitance unidirectional TVS placed across each bus line to ground, leveraging VWM = 17.1 V to avoid interfering with 2.5 V–3.3 V differential signaling. Use Value: 1.0 µA leakage at VWM prevents signal distortion or bias shift in high-impedance CAN receivers. |
Use Scenario: Suppressing inductive kickback from brushed DC motors in automotive seat/mirror actuators and industrial valve drivers. IC Role / Device Role / Timing Role: Flyback suppression diode alternative - placed across motor terminals or H-bridge outputs to clamp reverse EMF spikes. Use Value: 400 W peak power rating handles repeated 100 ms motor stall events without thermal runaway or parameter drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | DO-214AC (SMA) package; 20 V VBR; 400 W PPPM; higher profile (2.29 mm) and larger footprint. | Less suitable for space-constrained automotive modules requiring <1.1 mm height; same clamping performance but lower thermal mass. | Select SMAJ20A only if existing PCB layout accommodates SMA footprint and height tolerance permits. |
| TPSMA6.8A | Same DO-220AA package; lower VBR (6.45–7.14 V); 300 W PPPM; intended for 5 V logic-level protection. | Not interchangeable for 12 V–24 V systems due to premature conduction below operating voltage; unsuitable for load dump scenarios. | Choose TPSMA6.8A only for 3.3 V/5 V signal line protection where VWM ≤ 5.8 V is required. |
Compared with SMAJ20A and TPSMA6.8A, the TPSMP20AHM3/84A offers superior height constraint compliance (1.0 mm vs. 2.29 mm), identical surge capability within its voltage class, and automotive-specific qualification not present in generic SMA devices - making it the preferred choice for new AEC-Q101-compliant designs targeting compact power rail protection.
Availability
TPSMP20AHM3/84A is available at Aetrix Electronics and suitable for automotive electronics, industrial sensor systems, and DC motor drive applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPSMP20AHM3/84A 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 high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The TPSMP20AHM3/84A belongs to Vishay's eSMP® Series of high-power-density TVS diodes, engineered specifically for AEC-Q101-compliant overvoltage protection in harsh-environment automotive and industrial control systems.
FAQ
What is the exact breakdown voltage range for TPSMP20AHM3/84A?
The TPSMP20AHM3/84A has a guaranteed breakdown voltage (VBR) range of 19.0 V to 21.0 V at 1.0 mA test current, measured per ANSI/IEEE C62.35. This tight tolerance ensures consistent triggering behavior across production lots and temperature extremes, critical for protecting 12 V–16 V automotive subsystems without nuisance tripping.
Is TPSMP20AHM3/84A suitable for lead-free reflow soldering?
Yes, TPSMP20AHM3/84A meets MSL Level 1 per J-STD-020 and supports peak reflow temperatures up to 260 °C. Its matte tin-plated leads comply with J-STD-002 and JESD 22-B102, enabling robust, void-free solder joints in standard lead-free assembly processes without preconditioning or special handling.
Does TPSMP20AHM3/84A have AEC-Q101 qualification?
Yes, TPSMP20AHM3/84A is fully AEC-Q101 qualified - verified through temperature cycling, high-temperature reverse bias (HTRB), and surge endurance testing per JEDEC standards. The HM3 suffix confirms halogen-free, RoHS-compliant construction and automotive-grade reliability validation.
What is the maximum clamping voltage of TPSMP20AHM3/84A at rated surge current?
The TPSMP20AHM3/84A clamps to a maximum of 27.7 V at its rated peak pulse current (IPPM = 14.4 A, 10/1000 µs waveform). This value is measured under standardized conditions (TA = 25 °C, 5 mm × 5 mm copper pads per terminal) and defines the upper voltage limit imposed on protected circuitry during surge events.
Can TPSMP20AHM3/84A be used in bidirectional configurations?
No, TPSMP20AHM3/84A is strictly unidirectional and must be installed with cathode toward the protected line. Bidirectional operation requires pairing two devices or selecting a dedicated bidirectional variant (e.g., TPSMP20AHM3/84A is not rated for reverse conduction beyond VWM = 17.1 V).
TPSMP20AHM3/84A 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):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 14.4A
- 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)
TPSMP20AHM3/84A FAQ
1.How can I place an order for TPSMP20AHM3/84A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP20AHM3/84A 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 TPSMP20AHM3/84A reliable?
The price and inventory of TPSMP20AHM3/84A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP20AHM3/84A is usually 5 days.
3.What payment methods are accepted for TPSMP20AHM3/84A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP20AHM3/84A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP20AHM3/84A?
TPSMP20AHM3/84A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP20AHM3/84A 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 TPSMP20AHM3/84A?
For technical support, including TPSMP20AHM3/84A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP20AHM3/84A requirements.
6.How does Aetrix verify that TPSMP20AHM3/84A is sourced from the original manufacturer or authorized distributors?
All TPSMP20AHM3/84A 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 TPSMP20AHM3/84A meets industry standards.
7.What is the process for return or replacement of TPSMP20AHM3/84A?
All TPSMP20AHM3/84A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP20AHM3/84A, 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 TPSMP20AHM3/84A part is unused and in its original packaging.
Return procedure for TPSMP20AHM3/84A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP20AHM3/84A Tags
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