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Taiwan Semiconductor Corporation SMCJ58CAH
- Part No.:
- SMCJ58CAH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SMCJ58CAH.pdf
- Description:
- TVS DIODE 58VWM 93.6VC DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,710
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Product details
Overview
SMCJ58CAH 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. It provides ESD and surge protection for automotive power lines and industrial I/O interfaces.
For engineers reviewing the SMCJ58CAH datasheet, SMCJ58CAH pinout, SMCJ58CAH application, or SMCJ58CAH equivalent, this device is selected for high-energy transient immunity in AEC-Q101-compliant systems requiring ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, sub-1ps response time, and <1µA reverse leakage above 10V.
Technical Context
The SMCJ58CAH is a bipolar (bidirectional) TVS diode designed for symmetric clamping in AC-coupled or floating signal/power lines. Its glass-passivated junction ensures stable VBR tolerance and low leakage, while its DO-214AB thermal design delivers RθJC = 10°C/W and supports 1500W peak pulse power at TA = 25°C.
It meets AEC-Q101 stress requirements and ISO 7637-2 test pulses without derating below 125°C ambient, with clamping performance validated under the standardized 10/1000µs waveform per REA definition. Polarity is marked by cathode band - irrelevant for bidirectional operation but retained for mechanical orientation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous reverse voltage before clamping begins; defines safe operating margin for 48V automotive or industrial bus lines. |
| VBR min/max | 64.4 V / 71.2 V @ 1 mA - Confirmed breakdown range ensures predictable turn-on across production lot and temperature. |
| VC @ IPPM | 93.6 V @ 16 A - Clamping voltage during 10/1000µs surge; limits downstream IC stress to safe levels in 48V systems. |
| PPK | 1500 W - Peak pulse power rating per single 1ms event; enables robust protection against load dump and inductive switching transients. |
| IR @ VWM | <1 µA - Ultra-low leakage preserves signal integrity and battery life in always-on circuits. |
| TJ max | +150 °C - Junction temperature limit supporting under-hood automotive placement and industrial high-ambient environments. |
| Response time | <1.0 ps - Sub-picosecond junction response ensures clamping initiates before transient energy couples into protected circuitry. |
Pinout & Package
DO-214AB (SMC) surface-mount package: 7.11 mm × 6.22 mm × 2.34 mm body, matte tin-plated leads, UL 94V-0 molding compound, polarity marked by cathode band (functionally unused in bidirectional configuration).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Cathode Band End | Anode (for unidirectional interpretation) | Physical orientation marker; electrically symmetric in SMCJ58CAH - both terminals behave identically under reverse or forward surge. |
| Opposite End | Cathode (for unidirectional interpretation) | Same electrical role as other terminal; no functional distinction - bidirectional clamping occurs across both terminals equally. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for engine control, body electronics, and ADAS power rails. |
| ISO 7637-2 compliance | Passes Pulse 1 (inductive load disconnect), Pulse 2a/2b (battery interruption), and Pulse 3a/3b (switching noise) - eliminates need for external test conditioning. |
| Glass passivated junction | Stable VBR tolerance and low IR drift over lifetime and humidity exposure - critical for long-term field reliability in industrial equipment. |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement before reflow - simplifies SMT line integration and reduces manufacturing cost. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives - supports green product certification and global market access. |
Applications
| Automotive Power Line Protection | Industrial PLC I/O Protection |
|---|---|
Use Scenario: Protecting 48V DC power input of vehicle infotainment head units from load dump and jump-start surges. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed upstream of DC-DC converter input to limit transient voltage to ≤93.6V. Use Value: Prevents damage to buck controller ICs rated for 60V absolute maximum input, enabling use of cost-optimized power stages. | Use Scenario: Shielding analog input channels (e.g., 4–20mA sensors) on programmable logic controllers from ESD and field-wiring transients. IC Role / Device Role / Timing Role: First-line transient absorber located at connector interface, shunting surge energy before signal conditioning amplifiers. Use Value: Maintains measurement accuracy by limiting voltage excursion to <100V, avoiding amplifier saturation or latch-up during 8kV contact ESD events. |
| Telecom Base Station DC Feeds | Renewable Energy Inverter Control Boards |
Use Scenario: Safeguarding -48V telecom rectifier outputs against lightning-induced surges on outdoor cabinet feed lines. IC Role / Device Role / Timing Role: Bidirectional clamping device mounted directly at power entry point to absorb multi-kW transients per IEC 61000-4-5 Level 4. Use Value: Enables system-level surge withstand without additional series impedance or active crowbar circuits - reducing BOM count and board space. | Use Scenario: Protecting microcontroller GPIOs and isolated gate drivers on solar inverter control boards from ground potential rise during grid faults. IC Role / Device Role / Timing Role: Localized TVS on auxiliary 12V/24V supply rails feeding MCU peripherals and optocouplers. Use Value: Ensures firmware execution continuity by preventing reset or brownout caused by 1500W transients coupled through shared chassis ground. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ58CA | 600W peak power rating, same VWM/VBR/VC specs, SMB package (smaller footprint, higher RθJA = 85°C/W) | Limited to lower-energy transients (e.g., IEC 61000-4-2 ESD only); unsuitable for ISO 7637-2 Pulse 5a load dump. | Select SMBJ58CA only when board space is constrained and surge threat level is limited to ESD or low-energy switching noise. |
| 1.5KE58CA | Through-hole DO-201 package, 1500W rating, identical VWM/VBR/VC, slower response (~1ns), higher IR (5µA typical) | Requires wave solder or hand assembly; not compatible with automated SMT lines; less suitable for high-density automotive PCBs. | Choose 1.5KE58CA only for legacy through-hole designs or prototyping where reflow compatibility is not required. |
Compared with SMBJ58CA and 1.5KE58CA, the SMCJ58CAH delivers identical clamping performance in a surface-mount AEC-Q101-qualified package optimized for automotive SMT production, offering superior thermal dissipation (RθJC = 10°C/W) and guaranteed sub-1ps response - making it the preferred choice for new 48V vehicle architectures and industrial control modules.
Availability
SMCJ58CAH is available at Aetrix Electronics and suitable for automotive power rail protection, industrial PLC I/O hardening, and telecom DC feed surge immunity requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SMCJ58CAH 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 was developed specifically for AEC-Q101-compliant automotive transient suppression, targeting ISO 7637-2 and IEC 61000-4-5 compliance in compact surface-mount form factors for next-generation 12V/48V vehicle electronics.
FAQ
What does the "CAH" suffix indicate in SMCJ58CAH?
The "CAH" suffix in SMCJ58CAH denotes a bidirectional TVS diode in DO-214AB (SMC) package with AEC-Q101 qualification. The "C" specifies bidirectional configuration, "A" indicates tightened VBR tolerance (64.4–71.2V vs. 64.4–78.7V for "H"), and "H" identifies the SMC package variant. This distinguishes it from unidirectional SMCJ58H and wider-tolerance SMCJ58AH variants.
Does SMCJ58CAH meet automotive qualification standards?
Yes, SMCJ58CAH is explicitly AEC-Q101 qualified per the manufacturer's documentation and meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b test requirements. Its construction - including glass-passivated junction, MSL Level 1 rating, and 150°C junction temperature capability - satisfies automotive reliability and process control mandates for powertrain, chassis, and body electronics applications.
How does the clamping voltage of SMCJ58CAH compare to its working voltage?
The SMCJ58CAH has a 58V working stand-off voltage (VWM) and clamps at 93.6V (VC) under 16A 10/1000µs surge. This 35.6V margin ensures protected downstream components (e.g., 60V-rated DC-DC controllers) remain within absolute maximum ratings during worst-case transients, while maintaining low leakage (<1µA) during normal 48V operation.
Can SMCJ58CAH be used in place of unidirectional TVS diodes?
No - SMCJ58CAH is strictly bidirectional and must not replace unidirectional TVS diodes like SMCJ58H in DC-biased circuits. Its symmetrical IV curve clamps equally in both polarities, making it ideal for AC lines or floating buses but unsuitable where forward conduction must be blocked (e.g., protecting anode-connected ESD-sensitive inputs). Always verify circuit topology before substitution.
What is the thermal resistance profile of SMCJ58CAH in typical PCB layout?
SMCJ58CAH has a junction-to-case thermal resistance (RθJC) of 10°C/W and junction-to-ambient (RθJA) of 55°C/W on standard FR-4 with 1-inch² 2-oz copper pad. This allows sustained operation up to +125°C ambient when dissipating 5W steady-state power, and full 1500W pulse handling at TA = 25°C - critical for under-hood automotive placement where airflow is limited.
SMCJ58CAH 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:
- 1
- 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:
- 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-214AB (SMC)
SMCJ58CAH FAQ
1.How can I place an order for SMCJ58CAH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMCJ58CAH 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 SMCJ58CAH reliable?
The price and inventory of SMCJ58CAH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMCJ58CAH is usually 5 days.
3.What payment methods are accepted for SMCJ58CAH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMCJ58CAH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMCJ58CAH?
SMCJ58CAH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMCJ58CAH 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 SMCJ58CAH?
For technical support, including SMCJ58CAH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMCJ58CAH requirements.
6.How does Aetrix verify that SMCJ58CAH is sourced from the original manufacturer or authorized distributors?
All SMCJ58CAH 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 SMCJ58CAH meets industry standards.
7.What is the process for return or replacement of SMCJ58CAH?
All SMCJ58CAH units undergo pre-shipment inspection (PSI). If there is an issue with SMCJ58CAH, 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 SMCJ58CAH part is unused and in its original packaging.
Return procedure for SMCJ58CAH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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