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Vishay General Semiconductor - Diodes Division SMAJ58CAHE3/5A
- Part No.:
- SMAJ58CAHE3/5A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SMAJ58CAHE3/5A.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,878
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Product details
Overview
SMAJ58CAHE3/5A from Vishay General Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in SMA (DO-214AC) package, designed for robust overvoltage protection of sensitive electronics. It features a 58 V standoff voltage (VWM), 64.4–71.2 V breakdown range (VBR), and clamps transients to ≤93.6 V at 4.3 A peak pulse current (IPPM) under 10/1000 μs waveform-ideal for safeguarding MOSFETs, ICs, and sensor signal lines in automotive and industrial power rails.
For engineers reviewing the SMAJ58CAHE3/5A datasheet, SMAJ58CAHE3/5A pinout, SMAJ58CAHE3/5A application, or SMAJ58CAHE3/5A equivalent, key selection criteria include its AEC-Q101 qualification, 400 W peak pulse power rating (≤78 V), bidirectional symmetry, low 0.104 %/°C VBR temperature coefficient, and compatibility with automated SMT placement on standard PCB copper pads.
Technical Context
This TVS diode operates as a voltage-clamping device across two terminals, responding to both positive and negative transients without polarity dependence. Its glass-passivated junction enables fast response (<1 ps), low incremental surge resistance, and stable clamping performance up to 150 °C junction temperature.
The SMAJ58CAHE3/5A is rated for 400 W peak pulse power (10/1000 μs), derated above 25 °C per thermal curve Fig. 2, and supports repetitive surge events at 0.01 % duty cycle. Its unmarked bidirectional construction eliminates cathode/anode orientation concerns during layout and assembly.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before clamping begins; defines safe working margin below breakdown. |
| VBR min/max | 64.4 V / 71.2 V at 1 mA - Confirmed breakdown threshold range; ensures reliable turn-on within spec across production lot. |
| VC @ IPPM | ≤93.6 V at 4.3 A - Clamped voltage during 10/1000 μs surge; determines maximum stress imposed on protected downstream circuitry. |
| PPPM | 400 W - Peak pulse power handling capability; validates protection against common ISO 7637-2 and IEC 61000-4-5 surge events. |
| IPPM | 4.3 A - Peak surge current supported at rated clamping voltage; directly correlates with energy absorption (E = VC × ∫i dt). |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments and high-ambient industrial settings. |
| Package | SMA (DO-214AC) - Surface-mount outline with 5.0 mm × 5.0 mm copper pad thermal requirement; compatible with J-STD-020 MSL Level 1 reflow. |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated leads; no polarity marking for bidirectional configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode / Cathode (unmarked) | Bidirectional transient path | Both terminals function identically; voltage clamping occurs symmetrically for ±polarity surges-no orientation required during placement. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in ADAS, body control, and infotainment systems. |
| 400 W peak pulse power | Supports IEC 61000-4-5 Level 3 (1 kV/2 Ω) and ISO 7637-2 Pulse 1/2a/5a surge immunity without derating below 78 V. |
| Low clamping ratio (VC/VBR ≈ 1.4) | Minimizes voltage overshoot during clamping-critical for protecting 60 V-rated MOSFETs and 3.3 V/5 V logic interfaces sharing same rail. |
| MSL Level 1, 260 °C peak reflow | Enables single-pass lead-free reflow without moisture sensitivity concerns; eliminates baking requirement prior to assembly. |
| RoHS-compliant + halogen-free option | Base P/NHE3 denotes RoHS-compliant AEC-Q101 version; meets automotive OEM material compliance requirements (e.g., GMW3172, Ford WSS-M99P9999-A1). |
Applications
| Automotive Power Rail Protection | Industrial Sensor Signal Line Guarding |
|---|---|
Use Scenario: Protecting 12 V/24 V battery-fed ECUs from load dump and alternator switching transients. IC Role / Device Role / Timing Role: Bidirectional clamping element placed across input rail and ground, absorbing >400 W surges within nanoseconds. Use Value: Prevents latch-up or permanent damage to microcontrollers and CAN transceivers by limiting rail voltage to ≤93.6 V during ISO 16750-2 Pulse 5a events. |
Use Scenario: Shielding analog output lines (e.g., 4–20 mA, 0–10 V) of pressure/temperature sensors in factory automation. IC Role / Device Role / Timing Role: Low-capacitance (<50 pF) shunt protector between signal and return, activated only during ESD or inductive kick events. Use Value: Maintains signal integrity during normal operation while suppressing ±8 kV contact ESD (IEC 61000-4-2) without loading the sensor output impedance. |
| Consumer Device USB/DC Input Protection | Telecom Power Interface Surge Suppression |
Use Scenario: Safeguarding USB-C PD and barrel jack inputs in portable medical monitors and smart home hubs. IC Role / Device Role / Timing Role: First-line defense against user-induced surges and hot-plug transients on unregulated DC input paths. Use Value: Withstands repeated 10/1000 μs surges up to 400 W without degradation-ensures long-term reliability in field-deployed devices. |
Use Scenario: Front-end protection of PoE-powered network switches and base station power supplies exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Parallel-connected TVS across primary DC input, coordinated with upstream GDT or MOV for staged clamping. Use Value: Provides precise 58 V clamping threshold to avoid nuisance tripping while enabling coordination with higher-energy secondary protectors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ58CA-M3/5A | Halogen-free, RoHS-compliant variant; identical electrical specs and AEC-Q101 qualification. | No functional difference; selected when halogen-free materials are mandated by end-customer environmental policy. | Choose SMAJ58CA-M3/5A if compliance with IPC-1752A Class B or automotive halogen-free standards is required. |
| SMBJ58CAHE3/5A | Same VWM/VBR/VC, but SMB (DO-214AA) package-20 % larger footprint, 600 W PPPM rating. | Higher power handling suits applications with more severe surge profiles (e.g., railway traction power), but requires PCB area increase. | Select SMBJ58CAHE3/5A only when 600 W surge margin is needed and board space permits larger package. |
Compared with SMAJ58CAHE3/5A, the SMAJ58CA-M3/5A offers identical protection performance with halogen-free construction, while SMBJ58CAHE3/5A trades compactness for 50 % higher surge power-making SMAJ58CAHE3/5A optimal for space-constrained AEC-Q101 designs needing 400 W capability.
Availability
SMAJ58CAHE3/5A is available at Aetrix Electronics and suitable for automotive ECU design, industrial sensor interface development, and telecom power supply hardening requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMAJ58CAHE3/5A 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, MOSFETs, optoelectronics, and passive components with emphasis on reliability and application-specific performance.
The SMAJ series was engineered for high-reliability transient suppression in harsh environments-targeting automotive, industrial, and telecom applications where consistent clamping, AEC-Q101 validation, and surface-mount manufacturability are essential.
FAQ
What is the clamping voltage of SMAJ58CAHE3/5A at its rated peak pulse current?
The SMAJ58CAHE3/5A clamps to a maximum of 93.6 V at its specified peak pulse current of 4.3 A under the 10/1000 μs waveform. This value is measured per Figure 1 and Table on page 2 of Vishay document 88390, and defines the upper voltage limit imposed on protected circuitry during surge events. The SMAJ58CAHE3/5A maintains this clamping performance across its full operating temperature range.
Is SMAJ58CAHE3/5A suitable for automotive applications?
Yes, SMAJ58CAHE3/5A is AEC-Q101 qualified, as confirmed in the "MECHANICAL DATA" section and footnote (1) of Vishay document 88390. Its qualification covers temperature cycling, high-temperature reverse bias, and ESD testing-making it appropriate for under-hood and cabin modules including body control units, lighting drivers, and ADAS sensor interfaces. The HE3 suffix explicitly denotes this automotive-grade version.
How does the bidirectional configuration of SMAJ58CAHE3/5A affect PCB layout?
The SMAJ58CAHE3/5A has no polarity marking and functions identically in both directions, eliminating orientation constraints during PCB layout and automated placement. Unlike unidirectional variants, it requires no cathode band alignment-reducing assembly errors and simplifying routing for differential or AC-coupled protection paths. This symmetry is verified in the "DEVICES FOR BIDIRECTION APPLICATIONS" section of the datasheet.
What is the thermal resistance of SMAJ58CAHE3/5A, and how does it impact power dissipation?
SMAJ58CAHE3/5A has a typical junction-to-ambient thermal resistance (RθJA) of 120 °C/W when mounted on 0.2" × 0.2" copper pads, and junction-to-lead resistance (RθJL) of 30 °C/W. These values define its ability to dissipate 3.3 W continuously at 50 °C ambient; exceeding this requires derating per Figure 2. Proper pad layout is essential to achieve rated surge performance and avoid thermal runaway during repetitive events.
Does SMAJ58CAHE3/5A meet RoHS and REACH requirements?
Yes, SMAJ58CAHE3/5A is RoHS-compliant per EU Directive 2011/65/EU, as stated in the "MECHANICAL DATA" section where "Base P/NHE3" is defined as RoHS-compliant and AEC-Q101 qualified. It also conforms to REACH SVHC requirements, with material declarations available via Vishay's compliance portal (doc?99912). The HE3 suffix confirms full environmental compliance without exemptions.
SMAJ58CAHE3/5A 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):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 4.3A
- Power - Peak Pulse:
- 400W
- 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)
SMAJ58CAHE3/5A FAQ
1.How can I place an order for SMAJ58CAHE3/5A through Aetrix?
Please submit a Request for Quotation (RFQ) for SMAJ58CAHE3/5A 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 SMAJ58CAHE3/5A reliable?
The price and inventory of SMAJ58CAHE3/5A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMAJ58CAHE3/5A is usually 5 days.
3.What payment methods are accepted for SMAJ58CAHE3/5A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMAJ58CAHE3/5A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMAJ58CAHE3/5A?
SMAJ58CAHE3/5A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMAJ58CAHE3/5A 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 SMAJ58CAHE3/5A?
For technical support, including SMAJ58CAHE3/5A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMAJ58CAHE3/5A requirements.
6.How does Aetrix verify that SMAJ58CAHE3/5A is sourced from the original manufacturer or authorized distributors?
All SMAJ58CAHE3/5A 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 SMAJ58CAHE3/5A meets industry standards.
7.What is the process for return or replacement of SMAJ58CAHE3/5A?
All SMAJ58CAHE3/5A units undergo pre-shipment inspection (PSI). If there is an issue with SMAJ58CAHE3/5A, 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 SMAJ58CAHE3/5A part is unused and in its original packaging.
Return procedure for SMAJ58CAHE3/5A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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