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Vishay General Semiconductor - Diodes Division SMA5J9.0AHE3/5A
- Part No.:
- SMA5J9.0AHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J9.0AHE3/5A.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SMA5J9.0AHE3/5A 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 a 9.0 V stand-off voltage (VWM), 10.0–11.1 V breakdown voltage (VBR), 15.4 V clamping voltage at 5.0 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform. It is AEC-Q101 qualified and RoHS-compliant, used in automotive sensor power inputs and industrial I/O protection.
For engineers reviewing the SMA5J9.0AHE3/5A datasheet, SMA5J9.0AHE3/5A pinout, SMA5J9.0AHE3/5A application, or SMA5J9.0AHE3/5A equivalent, key selection criteria include clamping performance under 5.0 A surge, thermal resistance (RθJA = 80 °C/W), unidirectional polarity marking, AEC-Q101 qualification status, 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 VBR (10.0–11.1 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 9.0 V).
Designed for single-pulse transients per IEC 61000-4-5 (10/1000 μs), it delivers 500 W peak power dissipation with low incremental surge resistance and fast response time (<1 ns). Thermal performance is validated with RθJL = 25 °C/W and RθJA = 80 °C/W on standard pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - Maximum continuous reverse operating voltage before clamping begins; sets safe DC rail margin for 12 V systems. |
| VBR min/max | 10.0 V / 11.1 V - Verified avalanche onset range at 1.0 mA test current; ensures predictable turn-on across temperature and lot variation. |
| VC @ IPPM | 15.4 V at 5.0 A - Clamped voltage during 10/1000 μs surge; determines maximum stress on downstream ICs like microcontrollers or CAN transceivers. |
| PPPM | 500 W - Peak pulse power handling capability; supports robust protection against lightning-induced surges and inductive switching spikes. |
| ID @ VWM | <1.0 μA - Reverse leakage at rated stand-off voltage; critical for low-power sensor nodes where quiescent current must remain negligible. |
| TJ max | +150 °C - Maximum junction temperature rating; enables operation in under-hood automotive environments and sealed industrial enclosures. |
| Package | SMA (DO-214AC) - Surface-mount package with 5.28 mm × 4.50 mm footprint and cathode band marking; compatible with J-STD-020 MSL level 1 reflow. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads, UL 94 V-0 rated, polarity indicated by cathode band on one end.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (non-banded end) | Connected to system ground or low-side return path; forms shunt path during reverse overvoltage events. |
| Cathode | Reverse-biased terminal (banded end) | Connected to protected line (e.g., 12 V supply or CAN_H); avalanche conduction initiates here during transients. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in engine control modules and ADAS sensors. |
| Glass-passivated junction | Ensures stable VBR tolerance and low parameter drift over lifetime; eliminates risk of surface contamination-induced leakage increase. |
| Low incremental surge resistance | Minimizes VC rise under high di/dt transients-critical for protecting fast-switching MOSFET gates and precision analog front-ends. |
| MSL Level 1 (260 °C peak) | Supports lead-free reflow without popcorn cracking or delamination; eliminates pre-bake requirement in high-volume SMT lines. |
| Automated placement compatibility | Standardized SMA geometry and lead coplanarity meet IPC-A-610 Class 2 requirements-enables >99.9% placement yield on pick-and-place machines. |
Applications
| Automotive Sensor Power Protection | Industrial PLC Digital Input Protection |
|---|---|
Use Scenario: 12 V power feed to wheel speed or oxygen sensors exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Unidirectional shunt TVS placed between sensor VCC and chassis ground. Use Value: Clamps transients to ≤15.4 V, preventing damage to internal LDOs and ADCs while maintaining <1.0 μA leakage at nominal 9.0 V operation. |
Use Scenario: 24 V digital input channel on programmable logic controller subject to relay coil flyback and ESD events. IC Role / Device Role / Timing Role: Primary overvoltage clamp on field-side input trace before optocoupler or Schmitt trigger. Use Value: Absorbs 500 W surges without degradation, enabling compliance with IEC 61000-4-4 (EFT) and IEC 61000-4-5 (surge) immunity standards. |
| Consumer USB Power Rail Protection | Telecom Ethernet PHY Interface Protection |
Use Scenario: 5 V USB VBUS line in portable docking station exposed to hot-plug insertion transients and cable discharge events. IC Role / Device Role / Timing Role: Secondary protection stage after upstream fuse, placed directly at connector. Use Value: Sub-1 ns response limits voltage overshoot to 15.4 V, safeguarding USB-C PD controllers and Type-C port multiplexers. |
Use Scenario: 3.3 V bias rail for Ethernet magnetics and PHY ICs in network switches subjected to lightning-induced common-mode surges. IC Role / Device Role / Timing Role: Local rail clamp on PHY supply, coordinated with common-mode chokes and gas discharge tubes. Use Value: 500 W rating sustains multiple surge events without parametric shift; RθJA = 80 °C/W allows thermal design within 75 °C ambient envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J9.0A-E3/5A | No AEC-Q101 qualification; commercial grade only; identical electrical specs and SMA package. | Not suitable for automotive production; acceptable for industrial or consumer prototypes where qualification is not mandated. | Select when cost sensitivity outweighs automotive reliability requirements and full qualification documentation is unnecessary. |
| SMA6J9.0AHE3/5A | 600 W PPPM rating (vs. 500 W); same VWM/VBR/VC; larger thermal mass but identical SMA footprint. | Better suited for higher-energy surge environments (e.g., heavy-duty vehicle battery lines), with no PCB change required. | Choose when system-level surge testing exceeds IEC 61000-4-5 Level 4 and additional margin is needed without layout revision. |
Compared with SMA5J9.0AHE3/5A, the SMA5J9.0A-E3/5A lacks automotive qualification but matches all electrical parameters, while the SMA6J9.0AHE3/5A provides +20 % peak power headroom in the same footprint-enabling upgrade paths without redesign.
Availability
SMA5J9.0AHE3/5A is available at Aetrix Electronics and suitable for automotive sensor modules, industrial PLC I/O cards, and telecom power management circuits requiring stable component supply with AEC-Q101 assurance and long-term lifecycle support.
Supply support for SMA5J9.0AHE3/5A 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, efficiency, and application-specific optimization.
The SMA5J series is engineered for high-power-density transient suppression in space-constrained automotive and industrial systems, balancing clamping performance, thermal robustness, and SMT manufacturability.
FAQ
What is the clamping voltage of the SMA5J9.0AHE3/5A under a 10/1000 μs surge?
The SMA5J9.0AHE3/5A clamps to a maximum of 15.4 V when subjected to a 5.0 A peak pulse current with a 10/1000 μs waveform. This value is measured per standard test conditions in the Vishay datasheet (Document Number: 88875) and defines the upper voltage limit imposed on protected circuitry during transient events. The SMA5J9.0AHE3/5A maintains this clamping performance across its specified operating temperature range.
Is the SMA5J9.0AHE3/5A suitable for automotive applications?
Yes, the SMA5J9.0AHE3/5A is AEC-Q101 qualified and explicitly designated for automotive use via the "HE3" suffix. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and mechanical shock per AEC-Q101 requirements. The SMA5J9.0AHE3/5A is commonly deployed in engine control units, body electronics, and ADAS sensor modules where reliability under harsh environmental conditions is mandatory.
What does the "5A" suffix mean in SMA5J9.0AHE3/5A?
The "5A" suffix in SMA5J9.0AHE3/5A indicates the preferred packaging format: 7500 units per 13-inch diameter plastic tape and reel. This contrasts with "61", which denotes 1800 units per 7-inch reel. The "5A" configuration supports high-volume SMT assembly lines requiring extended reel life and reduced changeover frequency. The SMA5J9.0AHE3/5A remains electrically and mechanically identical regardless of reel size.
How does the SMA5J9.0AHE3/5A differ from bidirectional variants like SMA5J9.0CA?
The SMA5J9.0AHE3/5A is unidirectional, with polarity marked by a cathode band and intended for DC rail protection where forward conduction is not required. In contrast, SMA5J9.0CA is bidirectional, has no polarity marking, and protects AC or dual-polarity signals. The SMA5J9.0AHE3/5A exhibits forward voltage drop (~3.5 V at 25 A), while SMA5J9.0CA does not conduct forward-making them functionally non-interchangeable without circuit review.
What is the thermal resistance of the SMA5J9.0AHE3/5A, and how does it affect layout?
The SMA5J9.0AHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 80 °C/W when mounted on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal. This value assumes minimum recommended pad layout per Vishay's outline drawing. To maintain TJ ≤ 150 °C during repeated surges, PCB layout must allocate adequate copper area and avoid thermal bottlenecks-direct thermal vias to inner ground planes are recommended for sustained duty cycles. The SMA5J9.0AHE3/5A thermal performance is validated only under these defined mounting conditions.
SMA5J9.0AHE3/5A 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):
- 9V
- Voltage - Breakdown (Min):
- 10V
- Voltage - Clamping (Max) @ Ipp:
- 15.4V
- Current - Peak Pulse (10/1000µs):
- 32.5A
- 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)
SMA5J9.0AHE3/5A FAQ
1.How can I place an order for SMA5J9.0AHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J9.0AHE3/5A 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 SMA5J9.0AHE3/5A reliable?
The price and inventory of SMA5J9.0AHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J9.0AHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J9.0AHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J9.0AHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J9.0AHE3/5A?
SMA5J9.0AHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J9.0AHE3/5A 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 SMA5J9.0AHE3/5A?
For technical support, including SMA5J9.0AHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J9.0AHE3/5A requirements.
6.How does Aetrix verify that SMA5J9.0AHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J9.0AHE3/5A 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 SMA5J9.0AHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J9.0AHE3/5A?
All SMA5J9.0AHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J9.0AHE3/5A, 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 SMA5J9.0AHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J9.0AHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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