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Vishay General Semiconductor - Diodes Division TPSMP9.1AHM3_A/H
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- Part No.:
- TPSMP9.1AHM3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP9.1AHM3_A/H.pdf
- Description:
- TVS DIODE 7.78VWM 13.4VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,459
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Product details
Overview
TPSMP9.1AHM3_A/H from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in the PAR® family, designed for high-reliability automotive and industrial overvoltage protection. It features a 9.1 V breakdown voltage (VBR = 8.65–9.55 V), 7.78 V stand-off voltage (VWM), 22.4 V clamping voltage at 50 A peak pulse current, 300 W peak pulse power rating, and AEC-Q101 qualification - deployed to protect sensor signal lines and drive transistors against ESD and lightning-induced surges.
For engineers reviewing the TPSMP9.1AHM3_A/H datasheet, TPSMP9.1AHM3_A/H pinout, TPSMP9.1AHM3_A/H application, or TPSMP9.1AHM3_A/H equivalent, this page delivers verified electrical parameters, SMP (DO-220AA) package dimensions, polarity marking, junction temperature limits (−65 °C to +185 °C), and real-world automotive-grade protection use cases without generic assumptions.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with optimized junction passivation for stable clamping under repetitive surge stress. Its unidirectional configuration enables forward-biased operation during positive transients while blocking reverse leakage below 7.78 V.
Rated for 185 °C maximum junction temperature and MSL Level 1 (260 °C reflow), it supports automated SMT placement on FR-4 PCBs with 5.0 mm × 5.0 mm copper pads per terminal. The device exhibits 0.068 %/°C VBR temperature coefficient and 10 μA max reverse leakage at VWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 8.65 V / 9.55 V - ensures reliable turn-on above system operating voltage while avoiding false triggering |
| VWM | 7.78 V - maximum continuous reverse voltage before leakage exceeds 10 μA, compatible with 5 V–7 V logic/sensor rails |
| VC @ IPPM | 22.4 V at 50 A - clamps transient energy to safe levels for downstream 24 V-rated ICs and transistors |
| PPPM | 300 W - handles 10/1000 μs surges up to 50 A without thermal runaway on standard PCB layout |
| TJ max | +185 °C - supports under-hood automotive environments and high-power-density board layouts |
| Package | SMP (DO-220AA) - ultra-low profile (1.0 mm height), halogen-free, RoHS-compliant, AEC-Q101 qualified |
| Polarity | Cathode band marked - enables unambiguous orientation during automated placement and visual inspection |
Pinout & Package
SMP (DO-220AA) surface-mount package: 2-terminal, single-diode configuration with cathode band marking. Dimensions: 3.61 mm × 2.18 mm × 1.0 mm (L × W × H); matte tin-plated leads compliant with J-STD-002 and JESD 22-B102.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point during clamping | Connected to protected line (e.g., sensor output); conducts when transient exceeds VBR |
| Cathode | Reverse-biased reference terminal | Connected to ground or lower-potential rail; color band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Stable VBR and low leakage over lifetime, even under thermal cycling and humidity stress |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and infotainment interfaces |
| MSL Level 1 rating | Compatible with standard 260 °C lead-free reflow profiles without preconditioning |
| Low incremental surge resistance | Minimizes VC overshoot during fast-rising transients (e.g., ISO 7637-2 Pulse 1/2a) |
| 1.0 mm typical height | Enables compact layout in space-constrained modules such as camera ECUs and motor drivers |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
|
Use Scenario: Protecting CAN/LIN bus-connected temperature and pressure sensors in engine compartments exposed to load dump and ESD. IC Role / Device Role / Timing Role: Unidirectional TVS clamping transient energy before it reaches the sensor's analog front-end or level-shifter IC. Use Value: Maintains signal integrity under ISO 16750-2 load dump (12 V systems) and IEC 61000-4-2 ±15 kV contact discharge. |
Use Scenario: Safeguarding 24 V digital input channels on programmable logic controller (PLC) modules against field-wiring induced surges. IC Role / Device Role / Timing Role: Fast-response shunt element that diverts >50 A surge current away from optocoupler input stages and microcontroller GPIOs. Use Value: Prevents latch-up and permanent damage during 10/1000 μs surges up to 300 W without requiring external series impedance. |
| Consumer Power Adapter Interface | Motor Drive Gate Protection |
|
Use Scenario: Shielding USB-C PD port protection ICs and voltage monitors from hot-plug transients and cable ESD events. IC Role / Device Role / Timing Role: Standoff-clamp TVS placed between VBUS and GND, activated within <1 ns of overvoltage onset. Use Value: Limits VBUS overshoot to ≤22.4 V during 8 kV air discharge, preserving USB PD controller reliability. |
Use Scenario: Protecting high-side gate drivers in BLDC motor inverters from Miller-induced voltage spikes during switching transitions. IC Role / Device Role / Timing Role: Clamping diode across driver supply rails (VDD–GND) to absorb dv/dt-induced energy. Use Value: Suppresses ringing above 7.78 V while maintaining driver functionality under 185 °C junction conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ9.0A | Higher VWM (7.75 V), same VBR range (8.5–9.4 V), lower PPPM (400 W only for ≥13 V variants; SMAJ9.0A rated at 400 W but with higher VC = 14.4 V) | Less suitable for 7.78 V rail margin; better for 9 V nominal systems with tighter clamping tolerance | Select if board layout allows SMA package and clamping voltage budget permits 14.4 V |
| TPSMA6.8A | Lower VBR (6.45–7.14 V), lower VWM (5.8 V), same package (SMA), not AEC-Q101 qualified | Designed for consumer-grade 5 V systems; lacks automotive qualification and high-TJ capability | Choose only for non-automotive applications where cost sensitivity outweighs reliability requirements |
Compared with SMAJ9.0A and TPSMA6.8A, the TPSMP9.1AHM3_A/H delivers superior automotive readiness (AEC-Q101 + 185 °C), tighter VBR tolerance (±5.3%), and optimized low-profile packaging - making it the preferred choice for space-constrained, high-reliability 7–9 V signal line protection.
Availability
TPSMP9.1AHM3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, and motor drive gate protection requiring stable component supply, long-term lifecycle support, and traceable AEC-Q101-compliant sourcing.
Supply support for TPSMP9.1AHM3_A/H 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, and passive components for automotive, industrial, and computing markets.
The TPSMP9.1AHM3_A/H belongs to Vishay's PAR® high-power-density TVS family, engineered specifically for robust transient suppression in harsh environments - emphasizing AEC-Q101 compliance, low-profile SMT integration, and stable clamping performance across temperature.
FAQ
What is the maximum clamping voltage of the TPSMP9.1AHM3_A/H at its rated peak pulse current?
The TPSMP9.1AHM3_A/H has a maximum clamping voltage (VC) of 22.4 V at 50 A peak pulse current (IPPM) under 10/1000 μs waveform conditions. This value is measured per JEDEC standards and ensures downstream components remain within safe operating voltage limits during surge events. The TPSMP9.1AHM3_A/H maintains this clamping performance across its full operating temperature range, supporting reliable protection in automotive and industrial applications.
Is the TPSMP9.1AHM3_A/H suitable for automotive applications?
Yes, the TPSMP9.1AHM3_A/H is AEC-Q101 qualified and rated for junction temperatures up to +185 °C, making it suitable for under-hood and ADAS-related automotive applications. Its SMP (DO-220AA) package meets MSL Level 1 reflow requirements, and its passivated anisotropic rectifier technology ensures long-term stability in thermally demanding environments. The TPSMP9.1AHM3_A/H is explicitly listed in Vishay's automotive-grade product portfolio for sensor and interface protection.
What does the "HM3_A/H" suffix indicate in TPSMP9.1AHM3_A/H?
The "HM3_A/H" suffix denotes the packaging and revision code: "H" indicates halogen-free, RoHS-compliant construction; "M3" specifies the SMP (DO-220AA) package; "A" is the revision code; and "/H" identifies the 7-inch tape-and-reel delivery format (3000 units per reel). This ordering code ensures traceability to Vishay's qualified manufacturing lot and confirms compliance with automotive material standards per Vishay document #99912.
How does the TPSMP9.1AHM3_A/H compare to standard SMA-package TVS diodes in terms of board space?
The TPSMP9.1AHM3_A/H uses the SMP (DO-220AA) package, which measures 3.61 mm × 2.18 mm - 30% smaller in footprint and 50% lower in height (1.0 mm typical) than the standard SMA package (4.5 mm × 2.7 mm × 2.2 mm). This reduction enables denser routing in compact modules like camera ECUs and battery management systems. The TPSMP9.1AHM3_A/H achieves equivalent 300 W surge handling in this smaller form factor without sacrificing thermal or electrical performance.
What is the reverse leakage current specification for the TPSMP9.1AHM3_A/H at its stand-off voltage?
The TPSMP9.1AHM3_A/H specifies a maximum reverse leakage current (IR) of 10 μA at its 7.78 V stand-off voltage (VWM) and 25 °C ambient temperature. At elevated junction temperature (TJ = 150 °C), leakage increases to 50 μA - still well within acceptable limits for low-power sensor and communication interfaces. This low leakage ensures minimal impact on system quiescent current and signal integrity in always-on automotive modules.
TPSMP9.1AHM3_A/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-220AA
- Series:
- PAR®, eSMP®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 7.78V
- Voltage - Breakdown (Min):
- 8.65V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 22.4A
- 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)
TPSMP9.1AHM3_A/H FAQ
1.How can I place an order for TPSMP9.1AHM3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP9.1AHM3_A/H 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 TPSMP9.1AHM3_A/H reliable?
The price and inventory of TPSMP9.1AHM3_A/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP9.1AHM3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMP9.1AHM3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP9.1AHM3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP9.1AHM3_A/H?
TPSMP9.1AHM3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP9.1AHM3_A/H 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 TPSMP9.1AHM3_A/H?
For technical support, including TPSMP9.1AHM3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP9.1AHM3_A/H requirements.
6.How does Aetrix verify that TPSMP9.1AHM3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMP9.1AHM3_A/H 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 TPSMP9.1AHM3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMP9.1AHM3_A/H?
All TPSMP9.1AHM3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP9.1AHM3_A/H, 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 TPSMP9.1AHM3_A/H part is unused and in its original packaging.
Return procedure for TPSMP9.1AHM3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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