My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMA5J14HE3/5A
- Part No.:
- SMA5J14HE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J14HE3/5A.pdf
- Description:
- TVS DIODE 14VWM 25.8VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,128
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA5J14HE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in DO-214AC (SMA) package, designed for high-energy surge protection on power and signal lines. It features a 14 V standoff voltage (VWM), 15.6–17.2 V breakdown voltage (VBR) at 1 mA, 21.6 A peak pulse current (IPPM), 23.2 V clamping voltage (VC) at IPPM, and 500 W peak pulse power (PPPM) with 10/1000 µs waveform - used to protect MOSFETs, ICs, and sensor interfaces in automotive ECUs.
For engineers reviewing the SMA5J14HE3/5A datasheet, SMA5J14HE3/5A pinout, SMA5J14HE3/5A application, or SMA5J14HE3/5A equivalent, key selection criteria include unidirectional polarity, AEC-Q101 qualification, 150 °C max junction temperature, RoHS-compliant matte tin leads, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: under normal bias it presents high impedance (<1 µA leakage at 14 V), then rapidly avalanches when transient voltage exceeds VBR to clamp the line at ≤23.2 V. Its glass-passivated junction ensures stable breakdown and low incremental surge resistance.
Designed for single-polarity DC rails, it supports 40 A non-repetitive forward surge (IFSM) and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Thermal resistance is 80 °C/W junction-to-ambient (RθJA) and 25 °C/W junction-to-lead (RθJL) when mounted per recommended pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 14 V - maximum continuous reverse operating voltage before clamping begins |
| VBR min/max | 15.6 V / 17.2 V at 1 mA - guaranteed avalanche initiation range for reliable overvoltage detection |
| VC @ IPPM | 23.2 V - clamped voltage during 21.6 A 10/1000 µs surge, limiting stress on downstream components |
| PPPM | 500 W - peak transient energy absorption capability with standard lightning-surge waveform |
| ID @ VWM | ≤1.0 µA - ultra-low leakage preserves battery life and signal integrity in always-on circuits |
| TJ max | +150 °C - enables operation in under-hood automotive environments and industrial enclosures |
| Polarity | Unidirectional - cathode-banded device for DC rail protection with defined conduction direction |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, low-profile case with matte tin-plated leads solderable per J-STD-002 and JESD 22-B102; meets UL 94 V-0 flammability rating and AEC-Q101 qualification (HE3 suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry (cathode-banded end) | Connected to protected line's lower-potential side (e.g., GND or return path) |
| Cathode | Reverse-biased terminal (marked with band) | Connected to protected line's higher-potential side (e.g., +12 V supply or signal line) |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures stable, repeatable breakdown voltage and long-term reliability under repeated surge stress |
| AEC-Q101 qualification | Validated for automotive-grade temperature cycling, humidity, and mechanical shock per stress test requirements |
| MSL Level 1 rating | Enables standard SMT reflow without moisture sensitivity concerns (peak 260 °C) |
| Low incremental surge resistance | Minimizes voltage overshoot during fast transients, improving clamping precision |
| 5.0 mm × 5.0 mm pad layout optimized | Provides thermal mass for 500 W pulse dissipation while maintaining PCB area efficiency |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V battery-fed control modules (e.g., body controllers, lighting drivers) from load-dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Unidirectional TVS placed between power input and ground to clamp surges above 14 V before they reach LDOs or microcontrollers. Use Value: Limits transient voltage to ≤23.2 V during 21.6 A surges, preventing latch-up or gate oxide damage in downstream ICs. | Use Scenario: Safeguarding analog sensor outputs (e.g., pressure, temperature) in PLC I/O modules exposed to field-wiring ESD and inductive kickback. IC Role / Device Role / Timing Role: Shunt protector on signal line referenced to local ground, absorbing ±15 kV contact ESD per IEC 61000-4-2. Use Value: Sub-µA leakage preserves mV-level signal accuracy; 23.2 V clamping prevents op-amp saturation or ADC input damage. |
| Consumer Device USB Power Line | Telecom Base Station DC Feeds |
Use Scenario: Overvoltage suppression on 5 V USB VBUS lines in portable docking stations subjected to hot-plug transients and cable-induced ringing. IC Role / Device Role / Timing Role: Primary front-end TVS on input rail, coordinated with secondary polymer PTC for fault containment. Use Value: 500 W PPPM handles multiple sequential surges; DO-214AC footprint allows compact layout near connector. | Use Scenario: Secondary surge protection on -48 V DC distribution lines feeding RF amplifiers and backhaul radios in outdoor cabinets. IC Role / Device Role / Timing Role: Unidirectional clamp referenced to system ground, placed after primary MOV-based AC/DC stage. Use Value: 150 °C TJ max supports operation in sealed, high-ambient enclosures; AEC-Q101 grade assures long-term field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J14A-E3/5A | Commercial-grade (non-AEC-Q101), same electrical specs and DO-214AC package | Lacks automotive qualification; suitable for consumer/industrial use where AEC compliance not required | Select when cost sensitivity outweighs automotive qualification needs |
| 1.5SMC14A | Same VWM/VBR/VC ratings but in larger DO-214AB (SMC) package; RθJA = 40 °C/W vs. 80 °C/W | Higher thermal mass supports higher average power; requires more PCB area and different pad layout | Choose for designs needing improved thermal performance at expense of footprint |
Compared with SMA5J14HE3/5A, SMA5J14A-E3/5A offers identical protection performance without AEC-Q101 validation, while 1.5SMC14A delivers equivalent clamping with better thermal derating but in a less space-constrained package - enabling trade-offs between automotive compliance, board area, and sustained surge duty cycle.
Availability
SMA5J14HE3/5A is available at Aetrix Electronics and suitable for automotive electronic control units, industrial sensor interfaces, consumer USB power systems, and telecom DC distribution requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for SMA5J14HE3/5A 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, power density, and automotive-grade qualification.
The SMA5J series is engineered specifically for high-power-density transient suppression in space-constrained, high-reliability applications - targeting automotive, industrial, and telecom systems where AEC-Q101 compliance and robust 500 W surge handling are mandatory.
FAQ
What is the polarity configuration of the SMA5J14HE3/5A?
The SMA5J14HE3/5A is a unidirectional transient voltage suppressor diode. Its cathode is marked by a band on the DO-214AC (SMA) package body. When installed, the banded end connects to the higher-potential side of the protected line (e.g., +12 V), and the anode connects to ground or the return path - enabling conduction only during positive transients relative to ground.
Does the SMA5J14HE3/5A meet automotive qualification standards?
Yes, the SMA5J14HE3/5A is AEC-Q101 qualified, as confirmed by its HE3 suffix designation and Vishay documentation. This qualification covers stress tests including temperature cycling, humidity, mechanical shock, and high-temperature operating life - validating its suitability for under-hood and chassis-mounted automotive electronics where reliability under harsh conditions is critical.
What is the maximum clamping voltage of the SMA5J14HE3/5A during a surge event?
The SMA5J14HE3/5A has a maximum clamping voltage (VC) of 23.2 V when subjected to its rated peak pulse current (IPPM) of 21.6 A using the standard 10/1000 µs waveform. This value is measured at the device terminals under specified test conditions and defines the upper voltage limit imposed on the protected circuit during surge events.
How does the thermal performance of the SMA5J14HE3/5A compare to larger-package alternatives?
The SMA5J14HE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 5.0 mm × 5.0 mm copper pads. In comparison, the 1.5SMC14A in DO-214AB (SMC) package achieves ~40 °C/W - meaning the SMA5J14HE3/5A requires more careful thermal design for repetitive surges but offers superior board-area efficiency for space-limited layouts.
Is the SMA5J14HE3/5A compatible with lead-free reflow processes?
Yes, the SMA5J14HE3/5A is RoHS-compliant with matte tin-plated leads and rated for MSL Level 1 per J-STD-020, supporting peak reflow temperatures up to 260 °C. Its construction and plating meet J-STD-002 and JESD 22-B102 solderability standards, making it fully compatible with standard lead-free SMT assembly processes without preconditioning.
SMA5J14HE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 14V
- Voltage - Breakdown (Min):
- 15.6V
- Voltage - Clamping (Max) @ Ipp:
- 25.8V
- Current - Peak Pulse (10/1000µs):
- 19.4A
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J14HE3/5A FAQ
1.How can I place an order for SMA5J14HE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J14HE3/5A 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 SMA5J14HE3/5A reliable?
The price and inventory of SMA5J14HE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J14HE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J14HE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J14HE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J14HE3/5A?
SMA5J14HE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J14HE3/5A 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 SMA5J14HE3/5A?
For technical support, including SMA5J14HE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J14HE3/5A requirements.
6.How does Aetrix verify that SMA5J14HE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J14HE3/5A 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 SMA5J14HE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J14HE3/5A?
All SMA5J14HE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J14HE3/5A, 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 SMA5J14HE3/5A part is unused and in its original packaging.
Return procedure for SMA5J14HE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J14HE3/5A 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 …
