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Taiwan Semiconductor Corporation SMCJ58CA
- Part No.:
- SMCJ58CA
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ58CA.pdf
- Description:
- TVS DIODE 58VWM 93.6VC SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,369
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Product details
Overview
SMCJ58CA from Taiwan Semiconductor is a bidirectional 1500W transient voltage suppressor (TVS) diode in DO-214AB (SMC) package, with 58V working stand-off voltage (VWM), 64.4–71.2V breakdown voltage (VBR), and 93.6V maximum clamping voltage (VC) at 16A peak impulse current-designed for automotive ESD and load-dump protection in power supply rails and CAN/LIN interfaces.
For engineers reviewing the SMCJ58CA datasheet, SMCJ58CA pinout, SMCJ58CA application, or SMCJ58CA equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, <1.0ps response time, ≤1µA reverse leakage above 10V, and DO-214AB thermal performance (RθJA = 55°C/W).
Technical Context
The SMCJ58CA operates as a symmetric, bidirectional avalanche diode-clamping transients in both polarities without polarity dependence. Its glass-passivated junction ensures stable VBR tolerance and low leakage, while its single-die DO-214AB construction supports high surge robustness (1500W @ 1ms, 16A IPPM) and meets JESD201 Class 2 whisker resistance.
Designed for ungrounded or floating signal/power lines, it delivers fast transient suppression (<1.0ps response) with clamping voltage tightly controlled at 93.6V under standardized 10/1000µs waveform per IEC 61000-4-5 and ANSI/IEEE C62.35-enabling reliable protection of 48V and 60V automotive electronics against EFT, load dump, and inductive switching events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse operating voltage before clamping begins; defines safe DC/AC rail margin for 48V systems. |
| VBR min/max | 64.4 V / 71.2 V @ IT = 1 mA - Confirmed avalanche onset range; ensures predictable turn-on across temperature and unit variation. |
| VC @ IPPM | 93.6 V @ 16 A - Peak clamped voltage during 10/1000µs surge; determines protected circuit's maximum overvoltage stress. |
| PPK | 1500 W - Peak pulse power rating at TA = 25°C; defines single-event energy handling capacity per IEC 61000-4-5. |
| IR @ VWM | <1 µA - Reverse leakage at rated stand-off; guarantees minimal standby power loss and signal integrity in high-impedance circuits. |
| TJ max | +150 °C - Maximum junction temperature; enables operation in under-hood automotive environments with derated power above 25°C. |
| RθJA | 55 °C/W - Junction-to-ambient thermal resistance; informs PCB copper area requirements for sustained 5W steady-state dissipation. |
Pinout & Package
DO-214AB (SMC) surface-mount package: molded epoxy case meeting UL 94V-0, matte tin-plated leads solderable per J-STD-002, polarity marked by cathode band (bidirectional function renders band non-polar; used for orientation only).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Transient return path (bidirectional) | Connects to protected line; conducts during negative transients and serves as reference node for positive clamping. |
| Cathode (Lead 2) | Transient return path (bidirectional) | Connects to protected line; conducts during positive transients and serves as reference node for negative clamping. |
Key Features
| Feature | Design Value |
|---|---|
| ISO 7637-2 compliance | Validated for Pulse 1 (inductive switch-off), Pulse 2a/2b (battery disconnect/load dump), and Pulse 3a/3b (EFT); eliminates need for external test conditioning. |
| Glass passivated junction | Ensures stable VBR over lifetime and temperature; reduces parameter drift vs. epoxy-passivated alternatives in harsh environments. |
| Fast response time | <1.0 ps from 0 V to VBR min-faster than most microcontroller I/O rise times-prevents transient penetration before clamping activation. |
| Moisture sensitivity level | MSL Level 1 (per J-STD-020)-no bake required prior to reflow; simplifies SMT assembly and reduces manufacturing cost. |
| Halogen-free & RoHS | Complies with IEC 61249-2-21 and EU RoHS Directive-meets automotive OEM environmental requirements without performance trade-offs. |
Applications
| Automotive Power Rail Protection | CAN/LIN Bus Transient Suppression |
|---|---|
Use Scenario: Protecting 48V battery-fed ECUs, body control modules, and ADAS domain controllers from load dump and alternator transients. IC Role / Device Role / Timing Role: Bidirectional TVS placed between power rail and chassis ground to clamp ±100V surges within 10/1000µs. Use Value: Limits rail overvoltage to ≤93.6V, preventing damage to 60V-rated DC-DC converters and MCU power supplies. | Use Scenario: Safeguarding high-speed CAN FD and LIN physical layers against ESD (±8kV contact) and coupled EFT noise in vehicle networks. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp across differential bus lines (CANH–CANL) referenced to local ground. Use Value: Maintains signal integrity with <1.0ps response and <1µA leakage-no data corruption or false triggering during normal operation. |
| Industrial PLC I/O Protection | LED Driver Surge Immunity |
Use Scenario: Shielding 24V/48V digital input modules in programmable logic controllers from inductive kickback and lightning-induced surges. IC Role / Device Role / Timing Role: Standoff-connected TVS on each channel input, shunting transients to common ground before reaching optocoupler or Schmitt trigger inputs. Use Value: Withstands repeated 1500W pulses without degradation-ensuring long-term reliability in factory automation environments. | Use Scenario: Securing constant-current LED drivers in street lighting and signage against grid-switching transients and nearby lightning strikes. IC Role / Device Role / Timing Role: Parallel-connected TVS across driver output terminals to clamp voltage spikes exceeding 58V stand-off threshold. Use Value: Prevents LED string overvoltage failure and maintains lumen output stability by limiting clamping to 93.6V at full rated surge current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA (Bourns) | Same VWM (58V), lower PPK (600W), smaller SMB package (DO-214AA), RθJA = 85°C/W | Limited to lower-energy transients; unsuitable for ISO 7637-2 Pulse 5a (load dump) | Select SMCJ58CA when 1500W surge rating and DO-214AB thermal performance are required. |
| 1.5KE58CA (ON Semiconductor) | Same VWM/VBR/VC specs, through-hole DO-201 package, higher RθJA (75°C/W), no MSL Level 1 rating | Requires wave soldering or hand assembly; not compatible with automated SMT lines | Choose SMCJ58CA for surface-mount production, automotive qualification, and automated placement compatibility. |
Compared with SMBJ58CA and 1.5KE58CA, the SMCJ58CA uniquely combines 1500W surge capability, DO-214AB thermal efficiency (RθJA = 55°C/W), and MSL Level 1 process compatibility-making it the preferred choice for high-reliability automotive and industrial SMT designs requiring full ISO 7637-2 immunity.
Availability
SMCJ58CA is available at Aetrix Electronics and suitable for automotive ECU protection, industrial PLC I/O hardening, and LED driver surge immunity requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SMCJ58CA 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in TVS diodes, rectifiers, MOSFETs, and power management devices.
The SMCJ series belongs to TSC's high-power transient suppression product line, engineered specifically for automotive-grade ISO 7637-2 and industrial IEC 61000-4-5 compliance-with emphasis on robustness, consistency, and SMT manufacturability.
FAQ
What is the clamping voltage of the SMCJ58CA under standard 10/1000µs surge conditions?
The SMCJ58CA has a maximum clamping voltage (VC) of 93.6 V at 16 A peak impulse current (IPPM), measured using the standardized 10/1000µs double-exponential waveform per IEC 61000-4-5. This value is guaranteed across all units and represents the highest voltage seen at the device terminals during full-rated surge events-critical for ensuring downstream ICs remain within absolute maximum ratings.
Is the SMCJ58CA suitable for bidirectional automotive data buses like CAN FD?
Yes, the SMCJ58CA is explicitly designed for bidirectional use (denoted by the "CA" suffix) and is widely deployed on CAN FD and LIN bus lines. Its symmetric VBR (64.4–71.2 V) and low leakage (<1 µA at 58 V) prevent signal distortion, while its <1.0 ps response time ensures transients are clamped before data edges are corrupted-meeting OEM requirements for EMC robustness without adding capacitance or latency.
How does the SMCJ58CA differ from the unidirectional SMCJ58A?
The SMCJ58CA is bidirectional with identical electrical characteristics in both polarities, whereas the SMCJ58A is unidirectional and requires correct anode/cathode orientation. The CA version eliminates polarity concerns in floating or AC-coupled lines (e.g., differential buses), supports symmetrical clamping, and replaces two unidirectional devices in some topologies-reducing BOM count and layout complexity without sacrificing VWM (58 V), VBR (64.4–71.2 V), or VC (93.6 V).
Does the SMCJ58CA meet moisture sensitivity requirements for lead-free reflow?
Yes, the SMCJ58CA is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and requires no baking prior to lead-free reflow soldering. This is enabled by its hermetically sealed DO-214AB molding compound and moisture-resistant passivation-reducing manufacturing risk, eliminating pre-bake steps, and supporting high-yield automated SMT assembly in automotive and industrial production lines.
What thermal derating applies to the SMCJ58CA above 25°C ambient?
The SMCJ58CA's peak pulse power (PPK) must be linearly derated above TA = 25°C per Figure 2 in the datasheet, with RθJA = 55°C/W defining the slope. At 85°C ambient, PPK drops to approximately 850W; at 125°C, it falls to ~450W. Steady-state power dissipation (PD) remains 5W up to TJ = 150°C, but effective PD is constrained by PCB copper area and airflow-requiring ≥1 cm² of 2-oz copper per side for full-rated continuous operation.
SMCJ58CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AB, SMC
- Series:
- SMCJ
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 2
- Voltage - Reverse Standoff (Typ):
- 58V
- Voltage - Breakdown (Min):
- 64.4V
- Voltage - Clamping (Max) @ Ipp:
- 93.6V
- Current - Peak Pulse (10/1000µs):
- 16A
- Power - Peak Pulse:
- 1500W (1.5kW)
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMCJ)
SMCJ58CA FAQ
1.How can I place an order for SMCJ58CA through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ58CA 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 SMCJ58CA reliable?
The price and inventory of SMCJ58CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ58CA is usually 5 days.
3.What payment methods are accepted for SMCJ58CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ58CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ58CA?
SMCJ58CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ58CA 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 SMCJ58CA?
For technical support, including SMCJ58CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ58CA requirements.
6.How does Aetrix verify that SMCJ58CA is sourced from the original manufacturer or authorized distributors?
All SMCJ58CA 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 SMCJ58CA meets industry standards.
7.What is the process for return or replacement of SMCJ58CA?
All SMCJ58CA units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ58CA, 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 SMCJ58CA part is unused and in its original packaging.
Return procedure for SMCJ58CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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