My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMA15AHM3_B/H
- Part No.:
- TPSMA15AHM3_B/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA15AHM3_B/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,760
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMA15AHM3_B/H from Vishay General Semiconductor is a unidirectional surface-mount PAR® transient voltage suppressor (TVS) diode designed for clamping inductive switching surges and lightning-induced transients on power and signal lines. It features a 15.0 V nominal breakdown voltage (VBR), 12.8 V stand-off voltage (VWM), 400 W peak pulse power (10/1000 µs), 18.9 V maximum clamping voltage at 5.0 A, and operates up to +185 °C junction temperature - deployed in automotive sensor interfaces and industrial I/O protection.
For engineers reviewing the TPSMA15AHM3_B/H datasheet, TPSMA15AHM3_B/H pinout, TPSMA15AHM3_B/H application, or TPSMA15AHM3_B/H equivalent, key selection criteria include unidirectional polarity, SMA (DO-214AC) package compatibility, AEC-Q101 qualification status, clamping performance under 10/1000 µs surge, and thermal derating above 25 °C ambient.
Technical Context
This TVS diode uses passivated anisotropic rectifier technology with optimized junction passivation for stable clamping across temperature. Its unidirectional architecture provides low incremental surge resistance and fast response time (<1 ns), enabling effective suppression of ESD and repetitive transients without forward conduction during normal operation.
The device is rated for 40 A non-repetitive peak forward surge current (8.3 ms half-sine), supports 1.0 W steady-state power dissipation, and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its TJ = –65 °C to +185 °C operating range and halogen-free, RoHS-compliant construction align with automotive-grade reliability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 14.3 V / 15.0 V / 15.8 V - defines precise voltage threshold at which avalanche clamping initiates reliably at 1.0 mA test current |
| VWM | 12.8 V - maximum continuous reverse working voltage before leakage exceeds 1.0 µA, ensuring no false triggering in normal operation |
| VC @ IPPM | 18.9 V at 5.0 A - clamping voltage under full-rated 400 W surge, limiting downstream IC stress during transient events |
| PPPM | 400 W (10/1000 µs waveform) - peak surge power handling capacity with 0.01% duty cycle, validated on 5.0 mm × 5.0 mm PCB copper pads |
| TJ max. | +185 °C - enables use in high-temperature engine bay or powertrain modules without thermal derating penalties |
| Polarity | Unidirectional - blocks reverse current only; requires correct cathode orientation relative to protected line's ground reference |
| Package | SMA (DO-214AC) - industry-standard surface-mount outline with 0.208" length, compatible with automated pick-and-place and reflow processes |
Pinout & Package
TPSMA15AHM3_B/H is housed in an SMA (DO-214AC) plastic package with matte tin-plated leads. The cathode is marked by a color band on the body end; polarity must be observed during PCB layout to ensure proper transient shunting path to ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode (banded end) | Transient sink node | Connected to protected line; conducts surge current to ground when VLINE exceeds VBR |
| Anode | Reference node | Connected to system ground or lowest potential reference; completes clamping path during overvoltage event |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive applications including engine control, ADAS sensors, and infotainment power rails |
| Halogen-free & RoHS-compliant | Meets automotive environmental compliance standards (JESD201 Class 2 whisker resistance, UL 94 V-0 molding compound) |
| 185 °C junction rating | Enables placement near heat sources (e.g., power converters, motor drivers) without derating or thermal shutdown |
| Low clamping ratio (VC/VBR ≈ 1.26) | Minimizes overvoltage margin between clamping and breakdown, improving protection headroom for 12 V systems |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life and standard reflow profile (peak 260 °C), eliminating bake requirements prior to assembly |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Transient voltage suppressor placed directly at connector entry point to clamp surges before reaching interface ICs. Use Value: Withstands 400 W surges while maintaining 18.9 V clamping, preventing latch-up or damage to 12 V-rated transceivers and ADC front-ends. |
Use Scenario: Shielding digital input/output channels of programmable logic controllers against field-induced transients from solenoid switching and motor drives. IC Role / Device Role / Timing Role: Unidirectional TVS mounted on PCB edge connectors to divert surge energy away from microcontroller GPIOs and level shifters. Use Value: 12.8 V VWM ensures compatibility with 24 V industrial logic levels, and 185 °C rating supports operation inside sealed enclosures with elevated ambient temperatures. |
| Consumer Power Adapter Input | Telecom Line Card Surge Suppression |
Use Scenario: Safeguarding AC-DC adapter primary-side rectifiers and secondary-side DC outputs against lightning-induced surges entering via mains or USB ports. IC Role / Device Role / Timing Role: Secondary-side TVS placed across output rails to limit overvoltage during fast-rising transients from poor grounding or cable coupling. Use Value: 1.0 µA leakage at VWM prevents standby power loss, and 18.9 V clamping protects 15 V-rated LDOs and PMICs without crowbar action. |
Use Scenario: Protecting Ethernet PHYs and POTS line interfaces in telecom access equipment exposed to induced surges from nearby power lines or lightning strikes. IC Role / Device Role / Timing Role: Series-connected TVS on differential pairs to clamp common-mode transients while preserving signal integrity up to 100 MHz. Use Value: Fast <1 ns response and low capacitance (typ. 100 pF at 0 V) minimize signal distortion on 10/100BASE-TX lines without requiring impedance matching adjustments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ15A | Same VBR (14.3–15.8 V), but lower PPPM (400 W vs. TPSMA15AHM3_B/H's 400 W); identical SMA package and unidirectional polarity | Not AEC-Q101 qualified; lacks halogen-free certification and 185 °C rating - limited to commercial/industrial use | Select SMAJ15A only if automotive qualification and extended temperature operation are not required; otherwise TPSMA15AHM3_B/H offers superior reliability assurance. |
| SMCJ15A | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VBR range and unidirectional polarity | Requires larger PCB footprint and different pad layout; suited for higher-energy surge environments (e.g., AC mains input) | Choose SMCJ15A when surge energy exceeds 400 W capability; TPSMA15AHM3_B/H remains optimal for space-constrained automotive and board-level signal line protection. |
Compared with SMAJ15A and SMCJ15A, TPSMA15AHM3_B/H delivers AEC-Q101 qualification, halogen-free compliance, and 185 °C operation in the compact SMA footprint - making it the preferred choice for automotive-grade signal-line TVS where footprint, reliability, and thermal robustness are jointly critical.
Availability
TPSMA15AHM3_B/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line card surge suppression requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPSMA15AHM3_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, MOSFETs, and protection devices with emphasis on high-reliability and automotive-grade performance.
The TPSMA15AHM3_B/H belongs to Vishay's PAR® TVS family, engineered specifically for robust transient suppression in harsh environments - targeting automotive, industrial, and telecom applications demanding AEC-Q101 validation and extended temperature operation.
FAQ
What is the breakdown voltage tolerance for TPSMA15AHM3_B/H?
The TPSMA15AHM3_B/H has a specified breakdown voltage (VBR) range of 14.3 V (min) to 15.8 V (max) at 1.0 mA test current, with 15.0 V as the nominal value. This ±5% tolerance ensures consistent clamping behavior across production lots and supports reliable design margining for 12 V automotive systems where VBR must exceed nominal rail voltage but remain below downstream IC absolute maximum ratings. The TPSMA15AHM3_B/H datasheet confirms this specification under Electrical Characteristics Table.
Is TPSMA15AHM3_B/H AEC-Q101 qualified?
Yes, TPSMA15AHM3_B/H is AEC-Q101 qualified - explicitly stated in the Vishay document 88405 under "FEATURES" and "ORDERING INFORMATION", where HM3 suffix denotes halogen-free, RoHS-compliant, and AEC-Q101 qualified construction. This qualification covers stress tests including HTGB, HTRB, TCT, and mechanical shock, validating its suitability for automotive powertrain and chassis applications. The TPSMA15AHM3_B/H meets all requirements for Grade 0 (–40 °C to +150 °C ambient) and Grade 1 (–40 °C to +125 °C ambient) operation.
What is the maximum clamping voltage of TPSMA15AHM3_B/H at rated surge current?
The TPSMA15AHM3_B/H exhibits a maximum clamping voltage (VC) of 18.9 V at 5.0 A peak pulse current (IPPM), corresponding to its full 400 W rating under the 10/1000 µs waveform. This value is measured per Figure 1 and Table "ELECTRICAL CHARACTERISTICS" in the Vishay datasheet. The low VC/VBR ratio (~1.26) ensures tight protection margins for 15 V-tolerant circuits, and the TPSMA15AHM3_B/H maintains this performance across its full operating temperature range.
Does TPSMA15AHM3_B/H have a bidirectional configuration option?
No, TPSMA15AHM3_B/H is available in unidirectional polarity only - confirmed in the "FEATURES" section of the Vishay datasheet (Document Number: 88405), which states "Available in uni-directional polarity only". Bidirectional variants (e.g., TPSMA15CA) exist in the same family but carry distinct part numbers and marking codes; the TPSMA15AHM3_B/H suffix 'A' and ordering code structure strictly denote unidirectional functionality with cathode-band orientation.
What is the thermal derating behavior of TPSMA15AHM3_B/H above 25 °C ambient?
The TPSMA15AHM3_B/H follows linear thermal derating for both peak pulse power (PPPM) and steady-state power (PD) above 25 °C ambient, per Figure 2 in the Vishay datasheet. At 125 °C ambient, PPPM is reduced to ~70% of 400 W (~280 W), and PD drops from 1.0 W to ~0.5 W. Derating is based on junction temperature limits (TJ ≤ 185 °C), and the TPSMA15AHM3_B/H's high TJ max. allows continued operation where other TVS diodes would require derating to zero.
TPSMA15AHM3_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):
- 12.8V
- Voltage - Breakdown (Min):
- 14.3V
- Voltage - Clamping (Max) @ Ipp:
- 21.2V
- Current - Peak Pulse (10/1000µs):
- 18.9A
- 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)
TPSMA15AHM3_B/H FAQ
1.How can I place an order for TPSMA15AHM3_B/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA15AHM3_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 TPSMA15AHM3_B/H reliable?
The price and inventory of TPSMA15AHM3_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 TPSMA15AHM3_B/H is usually 5 days.
3.What payment methods are accepted for TPSMA15AHM3_B/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA15AHM3_B/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA15AHM3_B/H?
TPSMA15AHM3_B/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA15AHM3_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 TPSMA15AHM3_B/H?
For technical support, including TPSMA15AHM3_B/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA15AHM3_B/H requirements.
6.How does Aetrix verify that TPSMA15AHM3_B/H is sourced from the original manufacturer or authorized distributors?
All TPSMA15AHM3_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 TPSMA15AHM3_B/H meets industry standards.
7.What is the process for return or replacement of TPSMA15AHM3_B/H?
All TPSMA15AHM3_B/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA15AHM3_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 TPSMA15AHM3_B/H part is unused and in its original packaging.
Return procedure for TPSMA15AHM3_B/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA15AHM3_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 …
