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Vishay General Semiconductor - Diodes Division SMA5J9.0CAHE3/5A
- Part No.:
- SMA5J9.0CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J9.0CAHE3/5A.pdf
- Description:
- TVS DIODE 9VWM 15.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:5,719
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Product details
Overview
SMA5J9.0CAHE3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection on signal and power lines. It features a 9.0 V standoff voltage (VWM), 10.0–11.1 V breakdown voltage (VBR), 15.4 V clamping voltage (VC) at 5.0 A peak pulse current, and 500 W peak pulse power rating with 10/1000 µs waveform - used to safeguard MOSFETs, sensor interfaces, and automotive ECUs against ESD and load dump transients.
For engineers reviewing the SMA5J9.0CAHE3/5A datasheet, SMA5J9.0CAHE3/5A pinout, SMA5J9.0CAHE3/5A application, or SMA5J9.0CAHE3/5A equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification, low clamping ratio (VC/VWM = 1.71), MSL Level 1 moisture sensitivity, and compatibility with automated SMT placement on 5.0 mm × 5.0 mm copper pads.
Technical Context
This device operates as a voltage-clamped shunt protector: under normal conditions it presents high impedance (<1 µA leakage at 9.0 V), then rapidly avalanches into low-impedance conduction when transient voltage exceeds VBR, limiting downstream voltage to ≤15.4 V at 5.0 A. Its glass-passivated junction ensures stable breakdown and fast response (<1 ns).
Designed for bidirectional surge suppression, SMA5J9.0CAHE3/5A has symmetrical electrical characteristics in both polarities - no cathode marking, no polarity dependency - making it suitable for AC-coupled lines, differential buses, and floating sensor inputs where polarity reversal may occur during fault events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 9.0 V - maximum continuous reverse operating voltage before clamping begins; defines safe operating margin for 9 V nominal rails. |
| VBR (min/max) | 10.0 V / 11.1 V at 1.0 mA - guaranteed avalanche initiation range; ensures consistent turn-on across temperature and unit variation. |
| VC @ IPPM | 15.4 V at 5.0 A - clamped voltage during 10/1000 µs surge; determines maximum stress on protected ICs. |
| PPPM | 500 W - peak pulse power handling capacity; supports repeated 5 A surges without degradation when mounted per recommended pad layout. |
| TJ max. | +150 °C - maximum junction temperature; enables operation in under-hood automotive environments and industrial enclosures. |
| MSL Level | Level 1 (260 °C peak reflow) - allows standard lead-free SMT assembly without pre-baking. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, bidirectional configuration with no polarity marking. Dimensions: 4.93 mm × 3.99 mm × 2.29 mm (L × W × H); matte tin-plated leads; UL 94 V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional avalanche junction | No functional distinction between terminals; either terminal serves as input/output for transient energy diversion in both directions. |
| Case (body) | Thermal and mechanical interface | Plastic body provides electrical isolation; thermal path to PCB copper via soldered terminals only - no heatsink pad. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST, and ESD - supports Tier-1 ECU designs. |
| Low clamping ratio (VC/VWM) | 1.71 - minimizes overvoltage overshoot relative to working voltage, reducing risk of latch-up or gate oxide damage in protected FETs. |
| Fast response time | <1 ns - limits transient propagation before clamping engages, critical for protecting high-speed interfaces like CAN FD or LIN. |
| RoHS-compliant & halogen-free option | HE3 suffix denotes RoHS-compliant construction; HM3 variant adds halogen-free epoxy - meets automotive OEM material declarations. |
Applications
| Automotive Power Distribution | Industrial Sensor Signal Lines |
|---|---|
Use Scenario: Protection of 12 V battery-fed modules (e.g., body control units) against ISO 7637-2 Pulse 1 (inductive switch-off) and Pulse 3a/b (load dump). IC Role / Device Role / Timing Role: Shunt TVS placed at module input to clamp transients before they reach DC-DC converters and microcontrollers. Use Value: Withstands 500 W surges while holding clamped voltage below 15.4 V - prevents brownout resets and MOSFET avalanche failure during cold-crank events. | Use Scenario: Guarding analog outputs (4–20 mA, 0–10 V) and digital I/O (RS-485, IO-Link) in factory automation sensors exposed to motor switching noise. IC Role / Device Role / Timing Role: Bidirectional clamping element on differential pairs or single-ended lines to suppress common-mode and differential-mode transients. Use Value: Symmetrical VBR and VC ensure equal protection regardless of transient polarity - eliminates need for dual unidirectional devices or external polarity logic. |
| Consumer USB Power Delivery | Telecom Base Station Front-End |
Use Scenario: Input-side surge protection for USB-C PD sink controllers handling variable 5–20 V input, subject to hot-plug and cable-induced transients. IC Role / Device Role / Timing Role: Primary overvoltage clamp on VBUS line upstream of buck controller and load switch. Use Value: 9.0 V VWM aligns with USB PD minimum valid voltage; 15.4 V VC stays below typical 16–18 V absolute maximum ratings of PD controllers. | Use Scenario: Protecting RF front-end amplifiers and bias circuits in 4G/5G remote radio units subjected to lightning-induced surges on DC bias feeds and antenna control lines. IC Role / Device Role / Timing Role: Low-capacitance (typ. <50 pF at 0 V) bidirectional clamp on bias rails and serial control lines (e.g., SPI, I²C). Use Value: Minimal parasitic capacitance avoids signal integrity degradation at >1 GHz frequencies while delivering 500 W surge immunity per IEC 61000-4-5. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J9.0CA-M3/5A | Same electrical specs and AEC-Q101 qualification; differs only in halogen-free molding compound (HM3 vs HE3 base). | Required where OEM mandates halogen-free materials (e.g., VW 80101, GMW3172); identical PCB layout and thermal behavior. | Select M3 suffix if compliance with halogen-free standards is contractually required; otherwise HE3 offers same performance at lower cost. |
| SMA6J9.0CAHE3/5A | Higher PPPM (600 W vs 500 W); same VWM, VBR, VC, and package; slightly higher RθJA (85 °C/W vs 80 °C/W). | Preferred for systems requiring extended surge endurance (e.g., 12 V telecom power supplies facing repeated lightning strikes); requires same footprint but derates faster above 25 °C. | Choose SMA6J9.0CAHE3/5A when 20 % higher pulse power margin is needed and thermal headroom permits. |
Compared with SMA5J9.0CA-M3/5A, SMA5J9.0CAHE3/5A offers identical protection performance with standard RoHS compliance; versus SMA6J9.0CAHE3/5A, it trades 100 W pulse power for tighter thermal resistance - enabling use in space-constrained automotive modules where board area and airflow are limited.
Availability
SMA5J9.0CAHE3/5A is available at Aetrix Electronics and suitable for automotive ECUs, industrial sensor transmitters, USB-C PD adapters, and telecom power supply designs requiring stable component supply with AEC-Q101 validation and full traceability.
Supply support for SMA5J9.0CAHE3/5A 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, TVS, MOSFETs, and optoelectronics with emphasis on reliability, power density, and automotive-grade qualification.
The SMA5J series was engineered specifically for high-energy transient suppression in space-constrained automotive and industrial applications - balancing 500 W pulse capability, AEC-Q101 compliance, and DO-214AC manufacturability.
FAQ
What does the "CA" suffix indicate in SMA5J9.0CAHE3/5A?
The "CA" suffix denotes a bidirectional configuration: SMA5J9.0CAHE3/5A provides symmetrical transient suppression in both polarities, with identical VBR, VC, and leakage characteristics regardless of voltage polarity applied. Unlike unidirectional variants (e.g., SMA5J9.0A), it has no cathode band marking and is used where signal lines may experience voltage reversals or AC coupling.
Is SMA5J9.0CAHE3/5A suitable for automotive applications?
Yes - SMA5J9.0CAHE3/5A carries AEC-Q101 qualification (as indicated by the "HE3" suffix), meaning it has passed stress tests for high-temperature operating life, temperature cycling, unbiased highly accelerated stress testing, and ESD. It is approved for use in engine control units, body electronics, and ADAS modules per automotive OEM requirements.
What is the maximum clamping voltage of SMA5J9.0CAHE3/5A and how is it measured?
The maximum clamping voltage (VC) of SMA5J9.0CAHE3/5A is 15.4 V, measured at a peak pulse current (IPPM) of 5.0 A using a 10/1000 µs standard surge waveform. This value is guaranteed across temperature and unit variation when mounted on 5.0 mm × 5.0 mm copper pads per Vishay's recommended layout - not on minimal PCB traces.
How does SMA5J9.0CAHE3/5A differ from SMA5J9.0A?
SMA5J9.0CAHE3/5A is bidirectional with symmetrical characteristics in both polarities and no polarity marking; SMA5J9.0A is unidirectional, marked with a cathode band, and specifies forward voltage (VF = 3.5 V at 25 A). The CA version supports AC-coupled or floating lines; the A version is intended for DC rails where polarity is fixed and forward conduction may occur.
What packaging options are available for SMA5J9.0CAHE3/5A?
SMA5J9.0CAHE3/5A is supplied in 13-inch plastic tape and reel format (code "/5A") containing 7500 units per reel. It uses matte tin-plated leads compliant with J-STD-002 and JESD 22-B102 solderability standards, and meets JESD 201 Class 2 whisker resistance. Tape-and-reel packaging supports high-speed pick-and-place assembly.
SMA5J9.0CAHE3/5A 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:
- -
- Bidirectional Channels:
- 1
- 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)
SMA5J9.0CAHE3/5A FAQ
1.How can I place an order for SMA5J9.0CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J9.0CAHE3/5A 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 SMA5J9.0CAHE3/5A reliable?
The price and inventory of SMA5J9.0CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J9.0CAHE3/5A is usually 5 days.
3.What payment methods are accepted for SMA5J9.0CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J9.0CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J9.0CAHE3/5A?
SMA5J9.0CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J9.0CAHE3/5A 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 SMA5J9.0CAHE3/5A?
For technical support, including SMA5J9.0CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J9.0CAHE3/5A requirements.
6.How does Aetrix verify that SMA5J9.0CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMA5J9.0CAHE3/5A 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 SMA5J9.0CAHE3/5A meets industry standards.
7.What is the process for return or replacement of SMA5J9.0CAHE3/5A?
All SMA5J9.0CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J9.0CAHE3/5A, 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 SMA5J9.0CAHE3/5A part is unused and in its original packaging.
Return procedure for SMA5J9.0CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J9.0CAHE3/5A Tags
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