My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMP12AHM3/85A
~~2.jpg)
- Part No.:
- TPSMP12AHM3/85A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-220AA
- Datasheet:
-
TPSMP12AHM3/85A.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO220AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,233
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMP12AHM3/85A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-220AA (SMP) package, designed for high-reliability automotive and industrial circuit protection. It features a 12.6 V maximum breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), 18.0 A peak pulse current (IPPM), 16.7 V clamping voltage (VC) at IPPM, and AEC-Q101 qualification for under-hood applications.
For engineers reviewing the TPSMP12AHM3/85A datasheet, TPSMP12AHM3/85A pinout, TPSMP12AHM3/85A application, or TPSMP12AHM3/85A equivalent, this device delivers verified surge immunity in 10/1000 μs waveforms up to 300 W, low-profile mounting (1.0 mm height), and MSL Level 1 reflow compatibility - critical for automotive sensor interface, power rail, and ECU signal line protection.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for fast response (<1 ns) and low incremental surge resistance. Its unidirectional configuration provides forward conduction capability while clamping reverse transients above VWM, with thermal stability up to TJ = 185 °C.
The DO-220AA (SMP) package enables automated placement and supports high-power density PCB layouts. With 1.0 mm typical height and matte tin-plated terminals compliant to J-STD-002 and JESD 22-B102, it meets stringent automotive assembly requirements including JESD 201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (max) | 12.6 V - ensures reliable triggering above normal operating voltage without false clamping |
| VWM | 10.2 V - defines maximum continuous reverse operating voltage before leakage exceeds 1 μA |
| VC @ IPPM | 16.7 V - limits protected circuit voltage during 18.0 A 10/1000 μs surge, preserving downstream IC integrity |
| PPPM | 300 W - sustains standardized lightning/surge immunity per ISO 7637-2 and IEC 61000-4-5 |
| TJ max | 185 °C - enables operation in under-hood environments without derating penalties |
| Package | DO-220AA (SMP) - 1.0 mm profile supports compact automotive PCBs and automated SMT assembly |
Pinout & Package
DO-220AA (SMP) surface-mount package with cathode indicated by color band; two-terminal device with no internal complexity or control pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction path / surge return path | Connected to ground or low-impedance return plane to sink transient energy |
| Cathode | Protected line connection / clamping node | Connected to signal/power line requiring overvoltage protection; color band identifies polarity |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability across temperature cycling, humidity, and mechanical shock |
| 185 °C junction rating | Eliminates thermal derating in engine control units and ADAS modules operating near heat sources |
| MSL Level 1 (260 °C peak) | Enables single-pass lead-free reflow without preconditioning or moisture sensitivity concerns |
| Low 1.0 mm profile | Reduces board space and improves airflow in densely packed ECUs and sensor housings |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates for automotive OEM supply chains |
Applications
| Automotive Sensor Interface | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor outputs (e.g., pressure, temperature) from load dump and ESD events in vehicle cabins and powertrains. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and ground, clamping transients within nanoseconds to prevent latch-up or damage to 3.3 V/5 V receivers. Use Value: 16.7 V clamping voltage ensures protected ICs remain below absolute maximum ratings during ISO 7637-2 Pulse 5a (load dump) surges. | Use Scenario: Safeguarding digital input channels of programmable logic controllers against field-wiring induced surges and inductive kickback from solenoids and relays. IC Role / Device Role / Timing Role: Standoff-rated TVS on 24 V DC input lines, absorbing repetitive 300 W transients without degradation over >100,000 cycles. Use Value: 185 °C TJ rating allows uninterrupted operation in control cabinets with ambient temperatures up to 85 °C. |
| Automotive Body Control Module | Consumer Appliance Power Supply |
Use Scenario: Shielding microcontroller GPIOs and LIN transceivers in door modules, lighting controls, and seat position sensors from battery reversal and jump-start spikes. IC Role / Device Role / Timing Role: Low-capacitance unidirectional suppressor mounted directly at connector entry points to minimize trace inductance and improve clamping efficacy. Use Value: 1.0 mm height enables placement in tight connector zones without interfering with housing seals or mating interfaces. | Use Scenario: Protecting AC-DC converter secondary-side rails and communication lines (e.g., UART, I²C) in smart home appliances from mains-borne surges and user ESD. IC Role / Device Role / Timing Role: Cost-effective, AEC-Q101-grade TVS used in non-automotive BOMs where long-term reliability and supply continuity are prioritized. Use Value: Halogen-free, RoHS-compliant construction satisfies regional regulatory requirements for consumer electronics sold globally. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ12A-E3/5AT | DO-214AC (SMA) package; 13.3 V VBR max; 19.9 V VC; 400 W PPPM | Higher clamping voltage increases risk of downstream IC stress; larger 2.3 mm height limits dense layouts | Preferred where higher surge margin is needed and board space permits larger footprint |
| TPSMA6.8A-Q | Same DO-220AA package; lower 7.14 V VBR max; 12.1 V VC; 300 W PPPM | Designed for 5 V systems; unsuitable for 12 V automotive rails due to premature clamping | Select only for 3.3 V–5 V logic-level protection; not interchangeable with TPSMP12AHM3/85A in 12 V applications |
Compared with SMAJ12A-E3/5AT and TPSMA6.8A-Q, TPSMP12AHM3/85A uniquely balances 12 V system compatibility, ultra-low profile, and automotive qualification - making it optimal for space-constrained, high-temperature ECU designs where precise clamping and long-term reliability are mandatory.
Availability
TPSMP12AHM3/85A is available at Aetrix Electronics and suitable for automotive electronics, industrial control systems, and consumer appliance power management requiring stable component supply and long-lifecycle support.
Supply support for TPSMP12AHM3/85A 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, MOSFETs, and protection devices with emphasis on reliability, efficiency, and application-specific optimization.
The TPSMP series belongs to Vishay's PAR® (Protection and Regulation) family, engineered specifically for high-power-density transient suppression in harsh-environment applications including automotive, industrial automation, and transportation systems.
FAQ
What is the clamping voltage of the TPSMP12AHM3/85A at its rated peak pulse current?
The TPSMP12AHM3/85A has a maximum clamping voltage (VC) of 16.7 V when subjected to its rated 18.0 A peak pulse current (IPPM) under the standard 10/1000 μs waveform. This value is measured per ANSI/IEEE C62.35 and ensures protected circuits remain within safe operating limits during surge events. The TPSMP12AHM3/85A maintains this performance across its full operating temperature range.
Is the TPSMP12AHM3/85A suitable for automotive under-hood applications?
Yes, the TPSMP12AHM3/85A is AEC-Q101 qualified and rated for junction temperatures up to 185 °C, making it suitable for under-hood automotive applications such as engine control units, transmission modules, and body control modules. Its DO-220AA package withstands thermal cycling and vibration per automotive standards, and the TPSMP12AHM3/85A is explicitly listed in Vishay's automotive-grade product documentation.
What does the "HM3/85A" suffix indicate in TPSMP12AHM3/85A?
The "HM3" suffix denotes halogen-free, RoHS-compliant construction with AEC-Q101 qualification and JESD 201 Class 2 whisker resistance. The "/85A" indicates packaging in 13-inch diameter plastic tape and reel, with a base quantity of 10,000 units - a standard logistics configuration for high-volume SMT production. This exact configuration is confirmed in Vishay Document Number 88471, page 3.
How does the TPSMP12AHM3/85A compare to bidirectional TVS diodes in 12 V systems?
The TPSMP12AHM3/85A is unidirectional and intended for DC circuits where polarity is fixed, offering lower leakage and tighter VBR tolerance than equivalent bidirectional parts. In 12 V automotive systems, it provides superior clamping precision and lower capacitance versus bidirectional alternatives like SMBJ12CA, reducing signal distortion on data lines. The TPSMP12AHM3/85A is not suitable for AC or polarity-reversal scenarios.
What is the maximum steady-state power dissipation of the TPSMP12AHM3/85A?
The TPSMP12AHM3/85A has a maximum steady-state power dissipation (PD) of 2.5 W when mounted on an infinite heatsink at TA = 75 °C. Under typical PCB conditions (5.0 mm × 5.0 mm copper pads per terminal), derating applies per Figure 2 in Vishay Document 88471. This rating governs continuous forward conduction or leakage heating - distinct from its 300 W transient surge capability.
TPSMP12AHM3/85A 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):
- 10.2V
- Voltage - Breakdown (Min):
- 11.4V
- Voltage - Clamping (Max) @ Ipp:
- 16.7V
- Current - Peak Pulse (10/1000µs):
- 18A
- Power - Peak Pulse:
- 300W
- 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)
TPSMP12AHM3/85A FAQ
1.How can I place an order for TPSMP12AHM3/85A through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMP12AHM3/85A 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 TPSMP12AHM3/85A reliable?
The price and inventory of TPSMP12AHM3/85A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMP12AHM3/85A is usually 5 days.
3.What payment methods are accepted for TPSMP12AHM3/85A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMP12AHM3/85A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMP12AHM3/85A?
TPSMP12AHM3/85A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMP12AHM3/85A 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 TPSMP12AHM3/85A?
For technical support, including TPSMP12AHM3/85A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMP12AHM3/85A requirements.
6.How does Aetrix verify that TPSMP12AHM3/85A is sourced from the original manufacturer or authorized distributors?
All TPSMP12AHM3/85A 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 TPSMP12AHM3/85A meets industry standards.
7.What is the process for return or replacement of TPSMP12AHM3/85A?
All TPSMP12AHM3/85A units undergo pre-shipment inspection (PSI). If there is an issue with TPSMP12AHM3/85A, 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 TPSMP12AHM3/85A part is unused and in its original packaging.
Return procedure for TPSMP12AHM3/85A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMP12AHM3/85A Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
