My Inquiry
My Account
Vishay General Semiconductor - Diodes Division TPSMA15AHE3_A/H
- Part No.:
- TPSMA15AHE3_A/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
TPSMA15AHE3_A/H.pdf
- Description:
- TVS DIODE 12.8VWM 21.2VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,956
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPSMA15AHE3_A/H from Vishay General Semiconductor is a unidirectional surface-mount transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for clamping voltage transients on power and signal lines. It features a 15.0 V nominal breakdown voltage (VBR), 12.8 V stand-off voltage (VWM), 21.2 V maximum clamping voltage (VC) at 5.0 A peak pulse current, 400 W peak pulse power (10/1000 μs), and operates up to +185 °C junction temperature - used in automotive sensor protection and industrial power rail surge suppression.
For engineers reviewing the TPSMA15AHE3_A/H datasheet, TPSMA15AHE3_A/H pinout, TPSMA15AHE3_A/H application, or TPSMA15AHE3_A/H equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, MSL Level 1 rating, low clamping ratio (VC/VBR = 1.41), and compatibility with high-reliability PCB layouts using 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode employs passivated anisotropic rectifier technology optimized for high-temperature stability and fast response to ESD and lightning-induced transients. Its junction design enables stable operation up to TJ = 185 °C and meets JESD22-B102 whisker resistance Class 2.
The device delivers 400 W peak pulse power under 10/1000 μs waveform with 0.01 % duty cycle, and exhibits low incremental surge resistance for effective clamping during repetitive surge events in automotive and industrial environments.
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 conduction begins under 1.0 mA test current |
| VWM | 12.8 V - maximum continuous reverse working voltage before leakage exceeds 1.0 μA at 25 °C |
| VC @ IPPM | 21.2 V at 5.0 A - clamping voltage during 10/1000 μs surge, limiting downstream IC stress to safe levels |
| PPPM | 400 W - peak pulse power handling capability, enabling robust protection against IEC 61000-4-5 Level 4 surges |
| TJ max. | +185 °C - supports under-hood automotive applications and high-ambient industrial environments without derating |
| Polarity | Unidirectional - protects only against positive transients relative to cathode; requires correct orientation in series with protected line |
| MSL Level | Level 1 per J-STD-020 - allows unlimited floor life and reflow up to 260 °C peak, simplifying SMT manufacturing |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded epoxy case meeting UL 94 V-0 flammability rating; matte tin-plated leads solderable per J-STD-002; cathode indicated by color band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction or transient clamping | Connected to protected line (e.g., 12 V rail); must be routed with low-inductance trace to minimize overshoot |
| Cathode | Current exit terminal; marked by color band | Connected to ground or lower-potential reference; determines unidirectional clamping direction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per AEC standard |
| Junction passivation | Reduces surface leakage and improves long-term stability under high humidity and bias stress |
| Low clamping ratio (VC/VBR) | 1.41 - ensures minimal overvoltage exposure to downstream MOSFETs or microcontrollers during surge events |
| Fast response time | < 1 ns - activates before most ICs experience latch-up or gate oxide damage from ESD or switching transients |
| Repetitive surge capability | Rated for 4 pulses/minute at full 400 W - suitable for systems with frequent load switching (e.g., solenoid drivers) |
Applications
| Automotive Sensor Protection | Industrial Power Rail Clamping |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between signal line and chassis ground to clamp transients above 12.8 V while remaining transparent during normal operation. Use Value: Enables compliance with ISO 16750-2 Pulse 5a (load dump) by limiting peak voltage to ≤21.2 V, preventing damage to 3.3 V/5 V interface ICs. | Use Scenario: Safeguarding 24 V DC input rails of PLC I/O modules against inductive kickback from relay coils and motor drivers. IC Role / Device Role / Timing Role: Primary surge suppression element mounted directly at connector entry point, shunting energy to ground before reaching upstream regulators. Use Value: Withstands 400 W surges and operates up to +185 °C, eliminating thermal runaway risk in enclosed industrial enclosures. |
| Consumer Power Adapter Input | Telecom Line Interface Protection |
Use Scenario: Secondary-side overvoltage protection in AC/DC adapters for USB-C PD chargers, guarding against transformer flyback spikes. IC Role / Device Role / Timing Role: Fast-acting clamping diode across secondary winding output, triggered within nanoseconds of voltage excursion beyond 12.8 V. Use Value: Prevents false triggering of OVP circuits while ensuring <21.2 V clamping during 10/1000 μs surges, preserving adapter efficiency and safety certification. | Use Scenario: Surge protection on Ethernet PHY power pins (e.g., 3.3 V bias supply) in PoE-powered access points exposed to lightning-induced common-mode transients. IC Role / Device Role / Timing Role: Localized TVS on each powered line, placed adjacent to PHY IC to minimize loop inductance and improve clamping fidelity. Use Value: MSL Level 1 and halogen-free variants (HM3 suffix) support lead-free reflow and RoHS compliance required for telecom infrastructure equipment. |
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 SMA package, 15 V VBR, but rated for 400 W with 1.0 mA IT; higher IR (5.0 μA vs. 1.0 μA at VWM) | Not AEC-Q101 qualified; lacks automotive reliability validation and 185 °C TJ rating | Select SMAJ15A only for cost-sensitive consumer applications where automotive qualification and extended temperature range are not required. |
| TPSMA15AHM3_A/H | Identical electrical specs and AEC-Q101 qualification; differs only in halogen-free molding compound (HM3 vs. HE3) | Required for RoHS-compliant, halogen-free product designs (e.g., EU telecom equipment) | Choose TPSMA15AHM3_A/H when halogen-free compliance is mandated; otherwise TPSMA15AHE3_A/H satisfies standard automotive and industrial requirements. |
Compared with SMAJ15A and TPSMA15AHM3_A/H, the TPSMA15AHE3_A/H provides the optimal balance of AEC-Q101 qualification, 185 °C operation, and RoHS compliance without halogen-free premium - making it ideal for mainstream automotive ECUs and industrial controllers requiring proven field reliability.
Availability
TPSMA15AHE3_A/H is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial power supplies, and telecom line protection requiring stable component supply, AEC-Q101 validation, and high-temperature operational integrity.
Supply support for TPSMA15AHE3_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 diodes, rectifiers, TVS devices, and optoelectronics with emphasis on reliability, power efficiency, and application-specific performance.
The TPSMAxxA family was engineered for high-reliability transient suppression in harsh environments - targeting automotive, industrial, and telecom applications where sustained operation at +185 °C and immunity to repetitive surges are critical system requirements.
FAQ
What is the clamping voltage of TPSMA15AHE3_A/H at its rated peak pulse current?
The TPSMA15AHE3_A/H has a maximum clamping voltage (VC) of 21.2 V when subjected to its rated peak pulse current of 5.0 A under the standard 10/1000 μs waveform. This value is measured per Figure 1 in Vishay document 88405 and ensures downstream components remain within safe operating limits during surge events. The clamping performance is guaranteed across the full operating temperature range from -65 °C to +185 °C.
Is TPSMA15AHE3_A/H qualified for automotive applications?
Yes, TPSMA15AHE3_A/H is AEC-Q101 qualified, as confirmed in the Vishay datasheet (Document Number 88405, Revision 23-Jan-2024). It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per AEC-Q101 requirements. The "HE3" suffix explicitly denotes RoHS-compliant and AEC-Q101 qualified versions, making TPSMA15AHE3_A/H suitable for engine control units, body electronics, and ADAS sensor modules.
What does the "HE3" suffix mean in TPSMA15AHE3_A/H?
The "HE3" suffix in TPSMA15AHE3_A/H indicates that the device is RoHS-compliant and AEC-Q101 qualified, with matte tin-plated leads meeting J-STD-002 solderability and JESD22-B102 whisker resistance Class 2. The "_A/H" denotes revision code "A" and packaging in 7-inch tape-and-reel (H = 1800 units per reel), per Vishay's ordering information table in document 88405.
How does TPSMA15AHE3_A/H compare to bidirectional TVS diodes in surge protection?
TPSMA15AHE3_A/H is unidirectional and protects only against positive transients relative to its cathode, unlike bidirectional TVS diodes that suppress both polarities. This makes it ideal for DC power lines and single-polarity signal paths where reverse conduction must be avoided. Its lower leakage (<1.0 μA at VWM) and tighter VBR tolerance improve noise margin in precision analog circuits compared to bidirectional equivalents.
What PCB layout practices maximize the surge protection effectiveness of TPSMA15AHE3_A/H?
To maximize effectiveness, mount TPSMA15AHE3_A/H with minimum trace length between anode and protected line and cathode and ground plane. Use 5.0 mm × 5.0 mm copper pads per terminal as specified in the datasheet, avoid vias in TVS current path, and place it as close as possible to the entry point of the protected line. Thermal relief should be minimized to ensure low-inductance, low-resistance grounding during surge events.
TPSMA15AHE3_A/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:
- Obsolete
- 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:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 185°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
TPSMA15AHE3_A/H FAQ
1.How can I place an order for TPSMA15AHE3_A/H through Aetrix?
Please submit a Request for Quotation (RFQ) for TPSMA15AHE3_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 TPSMA15AHE3_A/H reliable?
The price and inventory of TPSMA15AHE3_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 TPSMA15AHE3_A/H is usually 5 days.
3.What payment methods are accepted for TPSMA15AHE3_A/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPSMA15AHE3_A/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPSMA15AHE3_A/H?
TPSMA15AHE3_A/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPSMA15AHE3_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 TPSMA15AHE3_A/H?
For technical support, including TPSMA15AHE3_A/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPSMA15AHE3_A/H requirements.
6.How does Aetrix verify that TPSMA15AHE3_A/H is sourced from the original manufacturer or authorized distributors?
All TPSMA15AHE3_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 TPSMA15AHE3_A/H meets industry standards.
7.What is the process for return or replacement of TPSMA15AHE3_A/H?
All TPSMA15AHE3_A/H units undergo pre-shipment inspection (PSI). If there is an issue with TPSMA15AHE3_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 TPSMA15AHE3_A/H part is unused and in its original packaging.
Return procedure for TPSMA15AHE3_A/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPSMA15AHE3_A/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 …
