My Inquiry
My Account
Vishay General Semiconductor - Diodes Division SMA5J30CAHE3_A/I
- Part No.:
- SMA5J30CAHE3_A/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMA5J30CAHE3_A/I.pdf
- Description:
- TVS DIODE 30VWM 48.4VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,469
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMA5J30CAHE3_A/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 power and signal lines. It features a 30 V stand-off voltage (VWM), 33.3–36.8 V breakdown voltage (VBR), 500 W peak pulse power (PPPM), and clamps transients to ≤48.4 V at 10.3 A IPPM - used in automotive sensor interfaces, industrial I/O protection, and telecom line conditioning.
For engineers reviewing the SMA5J30CAHE3_A/I datasheet, SMA5J30CAHE3_A/I pinout, SMA5J30CAHE3_A/I application, or SMA5J30CAHE3_A/I equivalent, key selection criteria include bidirectional clamping capability, AEC-Q101 qualification, 150 °C junction temperature rating, low incremental surge resistance, and compatibility with automated SMT placement on 0.2" × 0.2" copper pads.
Technical Context
This bidirectional TVS operates symmetrically across both polarities, delivering consistent clamping performance without polarity dependency. Its glass-passivated junction ensures stable VBR tolerance and low leakage (<1 μA at VWM), while the low RθJL (25 °C/W) enables effective thermal dissipation during repetitive surge events.
The device complies with ANSI/IEEE C62.35 for transient suppression and meets J-STD-020 MSL Level 1 (260 °C peak reflow). Its 10/1000 μs waveform response supports IEC 61000-4-5 surge immunity requirements in automotive and industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 30 V - maximum continuous reverse operating voltage before clamping initiates |
| VBR min/max | 33.3 V / 36.8 V at 1 mA - guaranteed breakdown threshold range defining turn-on consistency |
| VC @ IPPM | 48.4 V at 10.3 A - clamped voltage under standardized 10/1000 μs surge, limiting downstream stress |
| PPPM | 500 W - peak transient energy absorption capacity per single event |
| TJ max | +150 °C - maximum junction temperature enabling operation in under-hood automotive environments |
| Package | SMA (DO-214AC) - surface-mount outline with 5.28 mm length, 4.93 mm width, and 2.29 mm height |
| AEC-Q101 | Qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; no polarity marking for bidirectional configuration; RoHS-compliant and halogen-free (HM3 variant basis).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional terminal pair | No designated anode/cathode; terminals interchangeable - enables AC-coupled or floating-line protection |
| Case | Non-connected mechanical body | Electrically isolated housing; no internal connection to die - allows mounting on any PCB layer without short risk |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables single-device protection of AC signals, differential buses, or ungrounded lines without polarity concerns |
| AEC-Q101 qualification | Validated for automotive applications including engine control units, ADAS sensors, and infotainment power rails |
| Low RθJL (25 °C/W) | Supports higher surge repetition rates by minimizing junction temperature rise during sequential transients |
| MSL Level 1 rating | Permits standard SMT reflow without pre-baking - compatible with high-volume automated assembly |
| Glass-passivated junction | Ensures long-term VBR stability and <1 μA leakage at VWM across temperature and lifetime |
Applications
| Automotive Sensor Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting CAN bus transceivers and analog sensor inputs (e.g., pressure, temperature) from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Bidirectional TVS placed at connector entry point to clamp ±50 V transients before reaching signal conditioning circuitry. Use Value: Maintains signal integrity under 500 W surges while meeting AEC-Q101 requirements for 15-year vehicle service life. |
Use Scenario: Shielding digital input modules in programmable logic controllers from inductive kickback caused by solenoid/relay switching. IC Role / Device Role / Timing Role: Fast-response shunt device absorbing 10/1000 μs surges on 24 V DC field wiring before reaching optocoupler isolation stage. Use Value: Limits clamped voltage to 48.4 V, ensuring downstream logic remains within safe operating area during repeated switching events. |
| Telecom Line Interface | Consumer Power Adapter Input |
Use Scenario: Safeguarding Ethernet PHY front-end and PoE injectors against lightning-induced surges on twisted-pair cabling. IC Role / Device Role / Timing Role: Primary-level TVS on differential pairs, coordinated with gas discharge tubes for multi-stage protection architecture. Use Value: Symmetric clamping prevents common-mode imbalance and preserves signal timing margins up to 100 MHz. |
Use Scenario: Input-stage surge suppression in wall-mounted AC/DC adapters for smart home devices exposed to mains-borne transients. IC Role / Device Role / Timing Role: First-line defense across bridge rectifier output, absorbing EN 61000-4-5 Level 3 surges before bulk capacitor and controller IC. Use Value: Withstands 40 A IFSM (unidirectional reference) and maintains <1 μA leakage at 30 V, reducing no-load power loss. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMA5J30CAHM3_A/I | Halogen-free version; identical electrical specs and AEC-Q101 qualification | Required where halogen-free compliance (IEC 61249-2-21) is mandated for end-product environmental certification | Select when RoHS + halogen-free material declaration is contractually required |
| SMCJ30CAHE3_A/I | Higher PPPM (1500 W), larger SMC (DO-214AB) package, same VWM/VBR/VC specs | Suitable for systems requiring higher single-event surge margin or improved thermal mass in space-permitting designs | Choose when board layout allows larger footprint and system-level surge testing exceeds 500 W requirements |
Compared with SMA5J30CAHE3_A/I, the SMA5J30CAHM3_A/I offers identical protection performance with halogen-free construction, while the SMCJ30CAHE3_A/I delivers triple the peak pulse power in a larger package - enabling design flexibility between compactness and robustness without altering circuit topology.
Availability
SMA5J30CAHE3_A/I is available at Aetrix Electronics and suitable for automotive sensor interfaces, industrial PLC I/O protection, and telecom line conditioning requiring stable component supply, AEC-Q101 traceability, and RoHS compliance.
Supply support for SMA5J30CAHE3_A/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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and power efficiency.
The SMA5J series is part of Vishay's TRANSZORB® TVS platform, engineered specifically for high-power-density transient suppression in automotive, industrial, and communications infrastructure where space-constrained, AEC-Q101-qualified protection is critical.
FAQ
What is the clamping voltage of SMA5J30CAHE3_A/I at its rated peak pulse current?
The SMA5J30CAHE3_A/I clamps to a maximum of 48.4 V at its specified peak pulse current (IPPM) of 10.3 A under the standard 10/1000 μs waveform. This value is measured with the device mounted on 0.2" × 0.2" copper pads per JEDEC test conditions and defines the upper voltage limit imposed on protected circuitry during surge events.
Is SMA5J30CAHE3_A/I suitable for automotive applications?
Yes, SMA5J30CAHE3_A/I is AEC-Q101 qualified and explicitly intended for automotive use. Its qualification covers temperature cycling, highly accelerated life testing (HALT), and surge robustness - making it appropriate for engine control units, body electronics, ADAS sensors, and infotainment power rails where reliability under harsh thermal and electrical stress is mandatory.
How does the bidirectional nature of SMA5J30CAHE3_A/I affect its circuit implementation?
The bidirectional structure of SMA5J30CAHE3_A/I eliminates polarity marking and allows placement across AC-coupled lines, differential pairs, or floating references without orientation constraints. Unlike unidirectional TVS diodes, it provides symmetrical clamping in both directions - essential for protecting RS-485, CAN, or Ethernet interfaces where voltage transients can swing positive or negative relative to ground.
What is the thermal resistance profile of SMA5J30CAHE3_A/I, and how does it impact layout?
SMA5J30CAHE3_A/I has a typical junction-to-lead thermal resistance (RθJL) of 25 °C/W and junction-to-ambient (RθJA) of 80 °C/W. To maintain safe operation under repeated surges, PCB layout must use minimum recommended 0.2" × 0.2" copper pads per terminal - reducing thermal impedance and preventing junction overheating beyond the 150 °C maximum rating.
Does SMA5J30CAHE3_A/I require derating at elevated ambient temperatures?
Yes, SMA5J30CAHE3_A/I must be derated above TA = 25 °C per Figure 2 in the datasheet. At 85 °C ambient, its peak pulse power drops to approximately 350 W (70 % of 500 W rating); at 125 °C, it falls to ~200 W. Designers must apply this derating when sizing protection for under-hood or enclosed industrial environments to avoid thermal runaway during surge events.
SMA5J30CAHE3_A/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:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 30V
- Voltage - Breakdown (Min):
- 33.3V
- Voltage - Clamping (Max) @ Ipp:
- 48.4V
- Current - Peak Pulse (10/1000µs):
- 10.3A
- 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)
SMA5J30CAHE3_A/I FAQ
1.How can I place an order for SMA5J30CAHE3_A/I through Aetrix?
Please submit a Request for Quotation (RFQ) for SMA5J30CAHE3_A/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 SMA5J30CAHE3_A/I reliable?
The price and inventory of SMA5J30CAHE3_A/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMA5J30CAHE3_A/I is usually 5 days.
3.What payment methods are accepted for SMA5J30CAHE3_A/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMA5J30CAHE3_A/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMA5J30CAHE3_A/I?
SMA5J30CAHE3_A/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMA5J30CAHE3_A/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 SMA5J30CAHE3_A/I?
For technical support, including SMA5J30CAHE3_A/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMA5J30CAHE3_A/I requirements.
6.How does Aetrix verify that SMA5J30CAHE3_A/I is sourced from the original manufacturer or authorized distributors?
All SMA5J30CAHE3_A/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 SMA5J30CAHE3_A/I meets industry standards.
7.What is the process for return or replacement of SMA5J30CAHE3_A/I?
All SMA5J30CAHE3_A/I units undergo pre-shipment inspection (PSI). If there is an issue with SMA5J30CAHE3_A/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 SMA5J30CAHE3_A/I part is unused and in its original packaging.
Return procedure for SMA5J30CAHE3_A/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMA5J30CAHE3_A/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 …
