My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMA5J8.0CAHM3/I
- Part No.:
- SMA5J8.0CAHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J8.0CAHM3/I.pdf
- Description:
- TVS DIODE 8VWM 13.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:4,589
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA5J8.0CAHM3/I from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for high-energy surge protection on signal and power lines. It features 8.0 V stand-off voltage (VWM), 13.6 V clamping voltage (VC) at 36.8 A peak pulse current (IPPM), and 500 W peak pulse power (PPPM) with 10/1000 μs waveform - used to protect automotive sensor interfaces and industrial I/O circuits against ESD and load dump transients.
For engineers reviewing the SMA5J8.0CAHM3/I datasheet, SMA5J8.0CAHM3/I pinout, SMA5J8.0CAHM3/I application, or SMA5J8.0CAHM3/I equivalent, key selection criteria include bidirectional polarity, AEC-Q101 qualification (HM3 suffix), halogen-free RoHS compliance, and verified clamping performance under 10/1000 μs surge conditions per ANSI/IEEE C62.35.
Technical Context
This device operates as a voltage-clamped shunt protector with symmetrical breakdown behavior in both directions due to its bidirectional construction. Its glass-passivated junction ensures stable leakage (<1.0 μA at VWM) and fast response time (<1.0 ps), while the low incremental surge resistance enables effective energy diversion during transient events.
The SMA5J8.0CAHM3/I is rated for TJ = –55 °C to +150 °C operation and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. Its thermal resistance (RθJA = 80 °C/W) and junction-to-lead (RθJL = 25 °C/W) support reliable power dissipation on standard 5.0 mm × 5.0 mm copper pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before clamping begins |
| VBR (min/max) | 8.89 V / 9.83 V - guaranteed breakdown range at 1 mA test current, defining turn-on threshold |
| VC @ IPPM | 13.6 V at 36.8 A - clamping voltage during 10/1000 μs surge, limiting downstream voltage stress |
| PPPM | 500 W - peak pulse power handling capability under standardized surge waveform |
| ID @ VWM | ≤1.0 μA - ultra-low reverse leakage ensures minimal standby power loss and signal integrity |
| TJ max. | +150 °C - maximum junction temperature enabling use in under-hood automotive environments |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, halogen-free, RoHS-compliant, with matte tin-plated leads solderable per J-STD-020 and JESD 22-B102. Bidirectional construction means no polarity marking on the case.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically - bidirectional clamping allows connection across any two points without orientation concern |
| Case (body) | Thermal and mechanical interface | Non-electrical; provides thermal path to PCB copper and mechanical mounting via molded epoxy body |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated junction | Ensures long-term stability of breakdown voltage and leakage current over temperature and lifetime |
| AEC-Q101 qualified (HM3 suffix) | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress requirements |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients, improving protection margin for downstream ICs |
| MSL Level 1 moisture sensitivity | Enables standard SMT assembly without dry-pack or baking, reducing manufacturing overhead |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN/LIN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from ISO 7637-2 load dump and ISO 10605 ESD pulses in vehicle ECUs. IC Role / Device Role / Timing Role: Shunt-type transient suppressor placed directly at connector entry point to clamp surges before reaching signal conditioning circuitry. Use Value: Clamps to ≤13.6 V during 36.8 A surge, preserving 3.3 V/5 V logic thresholds and preventing latch-up in connected microcontrollers. | Use Scenario: Safeguarding digital input modules in programmable logic controllers exposed to inductive switching noise from solenoids and contactors. IC Role / Device Role / Timing Role: Bidirectional TVS mounted across input terminals to absorb both positive and negative polarity transients induced by relay coil de-energization. Use Value: Withstands repeated 500 W surges without degradation, extending field service life and reducing unplanned downtime. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Front-end protection for Ethernet PHYs and PoE injectors subjected to lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Primary-level surge clamp on differential data lines, coordinated with secondary GDT or polymer-based suppression. Use Value: Fast <1 ps response captures initial surge edge; 13.6 V clamping prevents damage to 2.5 V/3.3 V PHY transceivers. | Use Scenario: Secondary-side DC input protection in wall adapters and USB-C PD chargers against user-induced plug/unplug transients and capacitor discharge spikes. IC Role / Device Role / Timing Role: Bidirectional clamp across +VOUT and GND to suppress ringing and reverse-polarity misconnect events. Use Value: Halogen-free HM3 construction supports environmental compliance; 8.0 V VWM aligns with common 9 V–12 V adapter outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J8.0CAHE3/I | RoHS-compliant but not halogen-free; lacks AEC-Q101 qualification | Suitable for commercial/industrial use only; not approved for automotive under-hood deployment | Select when cost sensitivity outweighs automotive qualification requirements |
| SMA6J8.0CAHM3/I | 600 W PPPM rating; higher IPPM (41.7 A); same VWM/VC and package | Better suited for systems requiring higher surge margin (e.g., heavy-duty industrial motor controls) | Choose when design requires >500 W surge headroom without changing layout |
Compared with SMA5J8.0CAHM3/I, SMA5J8.0CAHE3/I omits halogen-free and AEC-Q101 compliance, while SMA6J8.0CAHM3/I increases surge capacity by 20 % with identical footprint and clamping behavior - enabling drop-in upgrade where higher energy handling is needed.
Availability
SMA5J8.0CAHM3/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O modules, telecom line protection, and consumer power adapter designs requiring stable component supply and long-term lifecycle assurance.
Supply support for SMA5J8.0CAHM3/I 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 surface-mount applications, targeting automotive, industrial, and communications systems where robustness against repetitive surge events is critical.
FAQ
What does the "HM3" suffix indicate in SMA5J8.0CAHM3/I?
The "HM3" suffix in SMA5J8.0CAHM3/I denotes halogen-free, RoHS-compliant construction with full AEC-Q101 qualification - confirming suitability for automotive applications including engine control, body electronics, and ADAS sensor modules. This distinguishes it from E3 (RoHS only) and HE3 (AEC-Q101 but not halogen-free) variants.
Is SMA5J8.0CAHM3/I unidirectional or bidirectional?
SMA5J8.0CAHM3/I is a bidirectional TVS diode, as confirmed by the "CA" suffix in its part number and electrical specifications showing symmetrical breakdown and clamping in both polarities. No cathode band marking is present on the SMA package, consistent with bidirectional construction.
What is the maximum clamping voltage for SMA5J8.0CAHM3/I under surge conditions?
The maximum clamping voltage for SMA5J8.0CAHM3/I is 13.6 V, measured at 36.8 A peak pulse current (IPPM) using the standardized 10/1000 μs waveform. This value is guaranteed across the operating temperature range and defines the upper voltage limit imposed on protected circuitry during transient events.
Can SMA5J8.0CAHM3/I be used in place of SMA5J8.0A?
No - SMA5J8.0CAHM3/I is bidirectional while SMA5J8.0A is unidirectional. Their VWM, VBR, and VC values differ significantly: SMA5J8.0A has VWM = 8.0 V but VBR min = 8.89 V and VC = 13.6 V at 36.8 A, whereas SMA5J8.0CAHM3/I shares those parameters but adds reverse-direction conduction. Substitution requires circuit review for polarity sensitivity.
What PCB pad layout is recommended for optimal thermal performance of SMA5J8.0CAHM3/I?
Vishay specifies mounting SMA5J8.0CAHM3/I on 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal to achieve rated PPPM and thermal resistance. Use minimum recommended pad dimensions from the DO-214AC outline drawing, ensure solid thermal vias under pads if layer stack permits, and avoid excessive solder mask coverage on thermal pads.
SMA5J8.0CAHM3/I 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):
- 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:
- Telecom
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
SMA5J8.0CAHM3/I FAQ
1.How can I place an order for SMA5J8.0CAHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J8.0CAHM3/I 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 SMA5J8.0CAHM3/I reliable?
The price and inventory of SMA5J8.0CAHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J8.0CAHM3/I is usually 5 days.
3.What payment methods are accepted for SMA5J8.0CAHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J8.0CAHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J8.0CAHM3/I?
SMA5J8.0CAHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J8.0CAHM3/I 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 SMA5J8.0CAHM3/I?
For technical support, including SMA5J8.0CAHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J8.0CAHM3/I requirements.
6.How does Aetrix verify that SMA5J8.0CAHM3/I is sourced from the original manufacturer or authorized distributors?
All SMA5J8.0CAHM3/I 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 SMA5J8.0CAHM3/I meets industry standards.
7.What is the process for return or replacement of SMA5J8.0CAHM3/I?
All SMA5J8.0CAHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J8.0CAHM3/I, 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 SMA5J8.0CAHM3/I part is unused and in its original packaging.
Return procedure for SMA5J8.0CAHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J8.0CAHM3/I 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 …
