My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMA12AHM3_B/H
- Part No.:
- TPSMA12AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA12AHM3_B/H.pdf
- Description:
- TVS DIODE 10.2VWM 16.7VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,822
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMA12AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features 12.0 V nominal breakdown voltage (VBR), 10.2 V stand-off voltage (VWM), 24.0 A peak pulse current (IPPM), 400 W peak pulse power (10/1000 µs), and 185 °C maximum junction temperature - enabling robust protection in automotive ECUs and industrial sensor interfaces.
For engineers reviewing the TPSMA12AHM3_B/H datasheet, TPSMA12AHM3_B/H pinout, TPSMA12AHM3_B/H application, or TPSMA12AHM3_B/H equivalent, key selection criteria include its AEC-Q101 qualification, halogen-free RoHS-compliant construction, unidirectional polarity, low clamping voltage (16.7 V at IPPM), and MSL Level 1 reflow capability up to 260 °C.
Technical Context
This TVS diode operates as a voltage-clamping device in parallel with protected circuitry, activating when reverse voltage exceeds its 12.0 V breakdown threshold. Its passivated anisotropic rectifier technology ensures stable clamping under repetitive surge conditions and high-temperature operation up to 185 °C junction temperature.
It delivers 400 W peak pulse power per 10/1000 µs waveform with 0.01 % duty cycle, exhibits 1.0 µA max reverse leakage at VWM, and maintains low incremental surge resistance for fast response (<1 ns typical). The device is rated for 40 A non-repetitive forward surge current (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 11.4 / 12.0 / 12.6 V - defines precise clamping activation threshold at 1.0 mA test current |
| VWM | 10.2 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 16.7 V - clamped voltage during 24.0 A surge, limiting stress on downstream ICs |
| PPPM | 400 W - peak transient energy absorption capacity under standardized 10/1000 µs waveform |
| TJ max. | 185 °C - enables use in under-hood automotive and high-ambient industrial environments |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" x 0.157" footprint and MSL Level 1 rating |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
Pinout & Package
SMA (DO-214AC) package with axial leads: cathode indicated by color band; mounted on PCB using 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per JEDEC standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient current sink | Connected to protected line; conducts surge current to ground when VREV > VBR |
| Anode | Reference node | Typically tied to system ground or lower-potential rail; completes clamping path |
Key Features
| Feature | Design Value |
|---|---|
| Junction passivation | Optimized anisotropic rectifier design improves long-term stability under thermal cycling and humidity |
| High-temperature operation | Rated for continuous operation up to 185 °C junction temperature - supports AEC-Q101 automotive requirements |
| Low clamping ratio | VC/VBR = 1.39 - tight voltage control minimizes overvoltage exposure to protected ICs |
| Halogen-free & RoHS | HM3 suffix denotes halogen-free molding compound and full RoHS compliance without compromising thermal performance |
| MSL Level 1 | Reflow-compatible up to 260 °C peak - eliminates moisture sensitivity concerns in standard SMT assembly |
Applications
| Automotive Body Control Module (BCM) | Industrial PLC Input Protection |
|---|---|
Use Scenario: Protecting LIN bus transceivers and microcontroller I/O pins from load-dump and inductive switching transients in vehicle door modules. IC Role / Device Role: Unidirectional TVS placed between LIN line and ground to clamp negative-going spikes while preserving signal integrity. Use Value: With 10.2 V VWM and 16.7 V VC, it avoids false triggering during normal 12 V system operation while limiting transients to safe levels for 5 V tolerant transceivers. |
Use Scenario: Safeguarding 24 V DC digital input channels of programmable logic controllers against field-wiring surges and relay coil flyback. IC Role / Device Role: Parallel-connected transient suppressor across input terminals to shunt surge energy before reaching optocoupler input stage. Use Value: 400 W peak power rating and 24.0 A IPPM ensure reliable suppression of 1 kV/500 A transients per IEC 61000-4-5, maintaining channel uptime in factory automation. |
| Automotive Camera Power Line | Consumer Appliance Motor Driver |
Use Scenario: Clamping voltage spikes on 12 V power supply rails feeding ADAS camera modules exposed to engine cranking and alternator ripple. IC Role / Device Role: Primary overvoltage protection device on main power input, upstream of DC/DC converters and image sensors. Use Value: 185 °C TJ max and AEC-Q101 qualification guarantee operational reliability in sealed, thermally constrained camera housings near engine compartments. |
Use Scenario: Protecting gate drivers and MCU GPIOs in washing machine motor control boards from brush-commutator noise and pump motor back-EMF. IC Role / Device Role: Localized TVS on motor driver supply and feedback lines to prevent latch-up and ESD damage during service or transport. Use Value: SMA package allows compact placement near connectors and MOSFETs; 1.0 µA leakage at VWM prevents unnecessary standby current drain in battery-backed systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ12A | Same VBR (11.4–12.6 V), but SMB package (DO-214AA); 600 W PPPM; higher IPPM (33.3 A) | Larger footprint (0.236" × 0.157"); better suited for higher-energy transients but less space-constrained layouts | Select SMBJ12A when board space permits and higher surge margin is required; not drop-in due to different pad layout |
| TPSMA12AHE3_B/H | Identical electrical specs and SMA package; differs only in plating: HE3 = standard RoHS, HM3 = halogen-free | No functional difference; both AEC-Q101 qualified; HM3 required where halogen-free compliance is mandated | Choose TPSMA12AHE3_B/H if halogen content is unrestricted; otherwise TPSMA12AHM3_B/H is mandatory for green manufacturing programs |
Compared with SMBJ12A, TPSMA12AHM3_B/H offers smaller footprint and identical clamping behavior but lower peak power handling; compared with TPSMA12AHE3_B/H, it provides identical performance with halogen-free materials - critical for automotive Tier 1 supply chain compliance.
Availability
TPSMA12AHM3_B/H is available at Aetrix Electronics and suitable for automotive electronics, industrial PLCs, and consumer appliance designs requiring stable component supply with AEC-Q101 qualification and halogen-free compliance.
Supply support for TPSMA12AHM3_B/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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability and automotive-grade validation.
The TPSMA12AHM3_B/H belongs to Vishay's PAR® family of transient voltage suppressors, engineered specifically for high-temperature, high-reliability protection in automotive and industrial power/signal lines.
FAQ
What is the breakdown voltage tolerance for TPSMA12AHM3_B/H?
The TPSMA12AHM3_B/H has a specified breakdown voltage range of 11.4 V (minimum) to 12.6 V (maximum) at 1.0 mA test current, with 12.0 V nominal. This ±5 % tolerance ensures predictable clamping onset across production lots and temperature extremes, supporting consistent protection design in safety-critical automotive applications.
Is TPSMA12AHM3_B/H compatible with lead-free reflow soldering processes?
Yes, TPSMA12AHM3_B/H is rated 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, and the HM3 suffix confirms halogen-free, RoHS-compliant construction - making it fully compatible with standard lead-free SMT assembly lines.
How does the clamping voltage of TPSMA12AHM3_B/H compare to its breakdown voltage?
At its rated 24.0 A peak pulse current (IPPM), the TPSMA12AHM3_B/H clamps to 16.7 V - resulting in a clamping ratio (VC/VBR) of approximately 1.39. This tight ratio ensures minimal overvoltage stress on protected components while maintaining sufficient margin above the 10.2 V stand-off voltage.
Does TPSMA12AHM3_B/H meet AEC-Q101 requirements for automotive use?
Yes, TPSMA12AHM3_B/H is explicitly AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number: 88405, Revision: 23-Jan-2024). It undergoes stress testing including HTGB, HTRB, temperature cycling, and ESD per AEC-Q101 Rev G, making it suitable for under-hood and body electronics in passenger vehicles and commercial vehicles.
What is the maximum reverse leakage current of TPSMA12AHM3_B/H at room temperature?
The TPSMA12AHM3_B/H exhibits a maximum reverse leakage current of 1.0 µA at its 10.2 V stand-off voltage (VWM) and 25 °C ambient temperature. At elevated temperature (TJ = 150 °C), leakage remains ≤1000 µA - ensuring low power loss and no interference with high-impedance sensor or communication circuits.
TPSMA12AHM3_B/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 24A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
TPSMA12AHM3_B/H FAQ
1.How can I place an order for TPSMA12AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA12AHM3_B/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 TPSMA12AHM3_B/H reliable?
The price and inventory of TPSMA12AHM3_B/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPSMA12AHM3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA12AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA12AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA12AHM3_B/H?
TPSMA12AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA12AHM3_B/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 TPSMA12AHM3_B/H?
For technical support, including TPSMA12AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA12AHM3_B/H requirements.
6.How does Aetrix verify that TPSMA12AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA12AHM3_B/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 TPSMA12AHM3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA12AHM3_B/H?
All TPSMA12AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA12AHM3_B/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 TPSMA12AHM3_B/H part is unused and in its original packaging.
Return procedure for TPSMA12AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA12AHM3_B/H 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 …
