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Vishay General Semiconductor - Diodes Division SMA5J8.0AHE3/5A
- Part No.:
- SMA5J8.0AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J8.0AHE3/5A.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:6,327
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Product details
Overview
SMA5J8.0AHE3/5A from Vishay General Semiconductor is a unidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on DC power rails and signal lines. It features 8.0 V stand-off voltage (VWM), 8.89–9.83 V breakdown voltage (VBR at 1 mA), 13.6 V clamping voltage (VC) at 36.8 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform. It is AEC-Q101 qualified and RoHS-compliant, used in automotive sensor power supply protection.
For engineers reviewing the SMA5J8.0AHE3/5A datasheet, SMA5J8.0AHE3/5A pinout, SMA5J8.0AHE3/5A application, or SMA5J8.0AHE3/5A equivalent, key selection criteria include clamping performance under 36.8 A surge, thermal resistance (RθJA = 80 °C/W), AEC-Q101 qualification status, unidirectional polarity marking, 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: when reverse voltage exceeds VWM = 8.0 V, it avalanches to limit transient energy by diverting surge current to ground. Its glass-passivated junction ensures stable breakdown and low leakage (<1.0 µA at VWM), while MSL Level 1 rating supports lead-free reflow up to 260 °C.
The device delivers 500 W peak pulse power (10/1000 µs) with low incremental surge resistance and fast response time (<1 ns), enabling robust protection of downstream MOSFETs and ICs against inductive switching transients and ESD events in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - Maximum continuous reverse operating voltage before conduction begins; sets minimum system rail margin for reliable standby operation. |
| VBR (min/max) | 8.89 V / 9.83 V at 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 13.6 V at 36.8 A - Clamped voltage during full-rated 500 W surge; defines maximum stress imposed on protected circuitry. |
| PPPM | 500 W - Peak pulse power handling per 10/1000 µs waveform; validates suitability for ISO 7637-2 Pulse 1/2a/5a and IEC 61000-4-5 Level 4 surges. |
| IPPM | 36.8 A - Peak surge current capability at VC; determines minimum trace width and PCB copper pad sizing (5.0 mm × 5.0 mm required). |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments with derated power above 25 °C. |
| RθJA | 80 °C/W - Junction-to-ambient thermal resistance; informs heatsinking requirements when operating near power limits in enclosed enclosures. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, unidirectional configuration with cathode band marking. Matte tin-plated leads, RoHS-compliant and AEC-Q101 qualified (HE3 suffix). Meets UL 94 V-0 flammability rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry / surge return path | Connected to protected line (e.g., 12 V rail); must route with low-inductance path to ground plane. |
| Cathode | Reverse-biased terminal / clamping node | Marked with band; connects to system ground; carries full surge current during transient events. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and surge endurance-required for engine control, ADAS, and body electronics. |
| Glass-passivated junction | Ensures stable VBR tolerance and low leakage (<1.0 µA) over lifetime, critical for low-power always-on sensor circuits. |
| MSL Level 1 (260 °C) | Supports standard lead-free reflow without popcorn effect or delamination-enables high-yield automated assembly. |
| Low Rsurge and fast response | Sub-nanosecond turn-on and minimal dynamic impedance preserve clamping accuracy during fast-rising transients (e.g., load dump). |
| 500 W peak pulse rating | Handles repeated ISO 7637-2 Pulse 5a (100 V, 500 ms) surges without degradation when mounted on specified 5.0 mm × 5.0 mm pads. |
Applications
| Automotive Power Rail Protection | Industrial Sensor Interface Protection |
|---|---|
Use Scenario: Protecting 12 V supply lines feeding engine control units (ECUs) and infotainment modules against load dump transients up to 100 V. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed between power rail and chassis ground, activated within <1 ns upon overvoltage detection. Use Value: Limits clamped voltage to ≤13.6 V during 36.8 A surges, preventing latch-up or gate oxide damage in downstream PMICs and microcontrollers. | Use Scenario: Safeguarding analog output lines (e.g., 4–20 mA current loops) in factory automation sensors exposed to relay coil switching noise. IC Role / Device Role / Timing Role: Bidirectional-capable protection element (unidirectional variant used with polarity-aware layout) suppressing ±1 kV EFT bursts per IEC 61000-4-4. Use Value: Maintains signal integrity with <1.0 µA leakage at 8.0 V, avoiding offset errors in precision current-sense amplifiers. |
| Consumer Device USB Port Protection | Telecom Power Supply Input Stage |
Use Scenario: Guarding 5 V USB VBUS lines in portable medical monitors against ESD events and hot-plug transients. IC Role / Device Role / Timing Role: Primary-level TVS placed immediately after USB connector, clamping fast-rising ±15 kV contact ESD per IEC 61000-4-2. Use Value: Achieves 13.6 V clamping at 36.8 A with sub-ns response, limiting stress on USB controller's internal ESD diodes and preserving data-line timing margins. | Use Scenario: Front-end surge suppression on 48 V telecom power inputs subjected to lightning-induced surges per IEC 61000-4-5 Level 4 (4 kV/2 kA). IC Role / Device Role / Timing Role: First-stage shunt protector in multi-stage architecture, absorbing initial 500 W energy burst before downstream MOVs or GDTs engage. Use Value: Enables compact design with DO-214AC footprint while delivering validated 500 W pulse handling-reducing need for larger, higher-cost alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J8.0A-E3/5A | Same electrical specs and package, but commercial-grade (non-AEC-Q101); no automotive qualification testing performed. | Approved for consumer/industrial use only; not permitted in automotive OEM designs requiring AEC-Q101 evidence. | Select when cost sensitivity outweighs automotive qualification needs and ambient temperature stays ≤125 °C. |
| SMA6J8.0AHE3/5A | 600 W PPPM, same VWM/VC, identical AEC-Q101 qualification; larger junction area increases IPPM to 44.2 A. | Higher surge margin for systems expecting repetitive ISO 7637-2 Pulse 5a events; requires same SMA footprint but higher thermal mass. | Choose when system-level surge testing exceeds 500 W single-pulse limits or long-term reliability under cyclic stress is critical. |
Compared with SMA5J8.0A-E3/5A, the SMA5J8.0AHE3/5A adds AEC-Q101 validation and extended temperature operation, while SMA6J8.0AHE3/5A trades identical qualification for +100 W headroom-making SMA5J8.0AHE3/5A the optimal balance of automotive compliance, footprint constraint, and cost for mid-tier ECUs and ADAS sensors.
Availability
SMA5J8.0AHE3/5A is available at Aetrix Electronics and suitable for automotive ECU power rail protection, industrial sensor interface hardening, and telecom 48 V input stage surge suppression requiring stable component supply across production lifecycles.
Supply support for SMA5J8.0AHE3/5A 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 was developed specifically for high-power-density transient suppression in space-constrained automotive and industrial applications, prioritizing AEC-Q101 compliance, low-profile packaging, and repeatable clamping performance under harsh thermal and electrical stress.
FAQ
What is the clamping voltage of the SMA5J8.0AHE3/5A under its rated surge current?
The SMA5J8.0AHE3/5A has a maximum clamping voltage (VC) of 13.6 V when subjected to its peak pulse current (IPPM) of 36.8 A using the standard 10/1000 µs waveform. This value is measured at TA = 25 °C with devices mounted on 5.0 mm × 5.0 mm copper pads per terminal. The SMA5J8.0AHE3/5A maintains this clamping performance across its qualified operating temperature range.
Is the SMA5J8.0AHE3/5A suitable for automotive applications?
Yes, the SMA5J8.0AHE3/5A is explicitly AEC-Q101 qualified, making it suitable for automotive applications including engine control units, body electronics, and ADAS sensors. Its construction includes glass-passivated junctions, MSL Level 1 moisture sensitivity, and validated performance from -55 °C to +150 °C. The HE3 suffix confirms automotive-grade qualification, distinguishing it from commercial variants like SMA5J8.0A-E3/5A.
What is the polarity configuration of the SMA5J8.0AHE3/5A?
The SMA5J8.0AHE3/5A is a unidirectional transient voltage suppressor diode. Its cathode is marked by a visible band on the SMA (DO-214AC) package body. This polarity must be observed during PCB layout: cathode connects to system ground, anode to the protected line. Bidirectional variants use the "CA" suffix (e.g., SMA5J8.0CA); the SMA5J8.0AHE3/5A is not bidirectional.
How does the thermal resistance of the SMA5J8.0AHE3/5A affect PCB layout?
The SMA5J8.0AHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on the recommended 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads. To maintain safe junction temperatures during repeated surges, designers must replicate this pad size and ensure adequate copper area and thermal vias. Reducing pad size increases RθJA, risking thermal runaway during high-duty-cycle transients.
What is the maximum reverse leakage current of the SMA5J8.0AHE3/5A at its stand-off voltage?
The SMA5J8.0AHE3/5A exhibits a maximum reverse leakage current (ID) of 1.0 µA at its rated stand-off voltage (VWM) of 8.0 V and TA = 25 °C. This low leakage ensures minimal power loss and signal interference in always-on circuits such as automotive sensor bias networks or battery-backed real-time clocks. Leakage remains within specification across the full -55 °C to +150 °C operating range.
SMA5J8.0AHE3/5A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AC, SMA
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 8.89V
- Voltage - Clamping (Max) @ Ipp:
- 13.6V
- Current - Peak Pulse (10/1000µs):
- 36.8A
- 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)
SMA5J8.0AHE3/5A FAQ
1.How can I place an order for SMA5J8.0AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J8.0AHE3/5A 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 SMA5J8.0AHE3/5A reliable?
The price and inventory of SMA5J8.0AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J8.0AHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J8.0AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J8.0AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J8.0AHE3/5A?
SMA5J8.0AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J8.0AHE3/5A 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 SMA5J8.0AHE3/5A?
For technical support, including SMA5J8.0AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J8.0AHE3/5A requirements.
6.How does Aetrix verify that SMA5J8.0AHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J8.0AHE3/5A 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 SMA5J8.0AHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J8.0AHE3/5A?
All SMA5J8.0AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J8.0AHE3/5A, 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 SMA5J8.0AHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J8.0AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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