My Inquiry
My Account
Taiwan Semiconductor Corporation SMBJ58CH
- Part No.:
- SMBJ58CH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ58CH.pdf
- Description:
- 600W, 71.6V, 10%, BIDIRECTIONAL,
- Quantity:
- Payment:
- Shipping:
Inventory:6,181
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMBJ58CH from Taiwan Semiconductor is a bidirectional transient voltage suppressor (TVS) diode in DO-214AA (SMB) package, designed for high-energy ESD and surge protection in automotive and industrial power rails. It features a 58 V working stand-off voltage (VWM), 64.4–78.7 V breakdown voltage (VBR), 103 V maximum clamping voltage (VC) at 6.1 A peak pulse current (IPP), and 600 W peak pulse power (PPK) with sub-1 ps response time.
For engineers reviewing the SMBJ58CH datasheet, SMBJ58CH pinout, SMBJ58CH application, or SMBJ58CH equivalent, key selection criteria include bidirectional clamping capability, ISO 7637-2 Pulse 1/2a/2b/3a/3b compliance, AEC-Q101 qualification, and low leakage (<1 µA at 58 V) for battery-sensitive systems.
Technical Context
The SMBJ58CH implements a glass-passivated silicon junction optimized for fast transient suppression in both polarities. Its unidirectional counterpart (SMBJ58H) shares identical VWM, VBR, and VC specs but lacks reverse polarity conduction - the "CH" suffix explicitly denotes bidirectional configuration per manufacturer ordering convention.
Thermal performance is defined by RθJC = 10 °C/W and RθJA = 55 °C/W, enabling reliable operation up to TJ = 150 °C. The device meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity, supporting lead-free reflow assembly without popcorn risk.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 58 V - Maximum continuous DC or RMS voltage the device blocks without clamping; sets operating margin before transient activation. |
| VBR min / max | 64.4 V / 78.7 V - Breakdown occurs within this range at 1 mA test current; defines turn-on threshold consistency across production lot. |
| VC @ IPP | 103 V at 6.1 A - Clamped voltage during 10/1000 µs surge; determines worst-case overvoltage seen by protected IC input. |
| PPK | 600 W - Peak non-repetitive surge power handling per IEEE C62.35; supports robust protection against load dump and inductive kick. |
| IR @ VWM | <1 µA - Reverse leakage at rated stand-off voltage; critical for low-power standby circuits and battery-backed systems. |
| Response time | <1.0 ps - Junction-level reaction speed; ensures clamping initiates before transient energy couples into downstream circuitry. |
| Package | DO-214AA (SMB) - Surface-mount outline with 0.090 g mass, UL 94V-0 molding, and matte tin-plated leads compliant with J-STD-002 solderability. |
Pinout & Package
DO-214AA (SMB) package: cathode band denotes polarity; for SMBJ58CH (bidirectional), the marking band identifies the center tap reference - terminals are symmetrical and interchangeable in AC-coupled or floating applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Bidirectional surge path | Either terminal accepts positive or negative transients; no fixed anode/cathode assignment - enables placement flexibility on differential or AC lines. |
| Case (exposed pad not present) | Thermal & mechanical anchor | Plastic body provides primary thermal path to PCB copper; no internal thermal pad - relies on solder joint conduction and board copper area for heat dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive under-hood and powertrain applications per stress test requirements including HTOL, TC, and UHAST. |
| ISO 7637-2 compliance | Withstands Pulse 1 (inductive load disconnect), Pulse 2a/2b (battery line transients), and Pulse 3a/3b (switching noise) without degradation. |
| Glass passivated junction | Enables stable VBR tolerance and low IR drift over temperature and lifetime versus epoxy-passivated alternatives. |
| Level 1 moisture sensitivity | Zero bake requirement prior to SMT reflow; compatible with standard J-STD-020 profile without floor life restriction. |
| Halogen-free & RoHS | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU - suitable for green manufacturing and export-compliant designs. |
Applications
| Automotive Power Line Protection | Industrial Sensor Interface Protection |
|---|---|
|
Use Scenario: 12 V/24 V battery rail in engine control units exposed to load dump and alternator ripple. IC Role / Device Role / Timing Role: Primary clamping element placed upstream of LDOs and microcontrollers to limit bus voltage to ≤103 V during 600 W surges. Use Value: Prevents latch-up and gate oxide damage in downstream ASICs by clamping transients faster than system response time allows propagation. |
Use Scenario: RS-485 transceiver inputs in factory automation PLCs subjected to EFT bursts and cable coupling. IC Role / Device Role / Timing Role: Bidirectional shunt protector across differential pair, absorbing ±1 kV EFT pulses per IEC 61000-4-4. Use Value: Maintains signal integrity by limiting common-mode voltage excursion to <103 V while preserving <1 µA leakage for precision bias networks. |
| LED Driver Output Protection | DC-DC Converter Input Filtering |
|
Use Scenario: Constant-current LED string driver output in outdoor signage, subject to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Parallel-connected TVS across output terminals to clamp inductive kick from disconnected loads and induced line transients. Use Value: Enables use of lower-voltage MOSFETs and op-amps in driver stage by capping transient voltage to 103 V - reducing BOM cost and layout area. |
Use Scenario: Input stage of isolated flyback converter in medical power supplies, requiring immunity to mains-borne surges. IC Role / Device Role / Timing Role: First-line defense before bridge rectifier and bulk capacitor, diverting 10/1000 µs surges away from switching FET gate drivers. Use Value: Extends capacitor lifetime by preventing overvoltage stress and avoids false triggering of OVP circuits during transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ58CA | Same VWM (58 V), slightly higher VC (107 V @ 5.8 A), identical DO-214AC (SMA) footprint but smaller thermal mass (RθJA = 65 °C/W). | Lower PPK (400 W) limits suitability for ISO 7637-2 Pulse 5a (load dump); acceptable for IEC 61000-4-5 line surge only. | Select when space-constrained layouts prioritize footprint over automotive-grade surge margin. |
| ON Semiconductor 1.5SMC58CA | Same VWM and bidirectional function, but DO-214AB (SMC) package (larger, RθJA = 40 °C/W), higher PPK (1500 W), and higher IPP (13.7 A). | Over-spec'd for 600 W requirements; adds cost and board area but improves margin for repetitive surge environments. | Select when extended thermal endurance and legacy SMC footprint compatibility outweigh size constraints. |
Compared with SMBJ58CH, SMAJ58CA offers smaller footprint but reduced surge rating and thermal capability, while 1.5SMC58CA delivers higher power handling in a larger package - choice depends on whether design priority is AEC-Q101 compliance and compactness (SMBJ58CH), minimal area (SMAJ58CA), or maximum surge margin (1.5SMC58CA).
Availability
SMBJ58CH is available at Aetrix Electronics and suitable for automotive power distribution, industrial sensor interfaces, LED driver outputs, and DC-DC converter inputs requiring stable component supply with full AEC-Q101 traceability and ISO 7637-2 validation.
Supply support for SMBJ58CH 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, and power MOSFETs for automotive and industrial markets.
The SMBJH series was developed specifically for AEC-Q101-compliant transient protection in harsh automotive environments, emphasizing low leakage, tight VBR tolerance, and robust surge immunity per ISO 7637-2 and IEC 61000-4-x standards.
FAQ
What does the "CH" suffix indicate in SMBJ58CH?
The "CH" suffix in SMBJ58CH explicitly denotes a bidirectional configuration, meaning the device clamps transients of either polarity symmetrically. Unlike unidirectional variants (e.g., SMBJ58H), SMBJ58CH has no designated anode or cathode - both terminals behave identically, making it suitable for AC-coupled or floating signal lines where polarity reversal may occur during surge events.
Is SMBJ58CH qualified for automotive applications?
Yes, SMBJ58CH is AEC-Q101 qualified and tested per automotive stress requirements including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. It also meets ISO 7637-2 Pulse 1, 2a, 2b, 3a, and 3b, confirming suitability for 12 V and 24 V vehicle electrical systems such as body control modules and infotainment power supplies.
What is the maximum clamping voltage of SMBJ58CH under surge conditions?
The maximum clamping voltage (VC) of SMBJ58CH is 103 V when subjected to a 10/1000 µs waveform peak impulse current (IPP) of 6.1 A. This value is guaranteed across temperature and production lot, ensuring downstream components see no more than 103 V during standardized surge events - critical for protecting 100 V-rated MOSFETs and interface ICs.
How does SMBJ58CH compare to SMBJ58AH in terms of electrical performance?
SMBJ58CH and SMBJ58AH share identical VWM (58 V), VBR range (64.4–78.7 V), and VC (103 V), but differ in configuration: SMBJ58CH is bidirectional, while SMBJ58AH is unidirectional with cathode band marking. SMBJ58AH exhibits forward voltage drop (~3.5 V at 50 A) in one direction; SMBJ58CH has no forward conduction path and clamps equally in both directions.
What packaging and moisture sensitivity level applies to SMBJ58CH?
SMBJ58CH is supplied in DO-214AA (SMB) package on 3,000-piece tape-and-reel format and is rated at Moisture Sensitivity Level 1 per J-STD-020 - meaning it has unlimited floor life and requires no baking prior to surface-mount reflow. Its matte tin-plated leads meet J-STD-002 solderability requirements for lead-free processes.
SMBJ58CH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Package/Case:
- DO-214AA, SMB
- Series:
- SMBJH
- 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:
- 103V
- Current - Peak Pulse (10/1000µs):
- 6.1A
- Power - Peak Pulse:
- 600W
- 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-214AA (SMB)
SMBJ58CH FAQ
1.How can I place an order for SMBJ58CH through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ58CH 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 SMBJ58CH reliable?
The price and inventory of SMBJ58CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ58CH is usually 5 days.
3.What payment methods are accepted for SMBJ58CH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ58CH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ58CH?
SMBJ58CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ58CH 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 SMBJ58CH?
For technical support, including SMBJ58CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ58CH requirements.
6.How does Aetrix verify that SMBJ58CH is sourced from the original manufacturer or authorized distributors?
All SMBJ58CH 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 SMBJ58CH meets industry standards.
7.What is the process for return or replacement of SMBJ58CH?
All SMBJ58CH units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ58CH, 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 SMBJ58CH part is unused and in its original packaging.
Return procedure for SMBJ58CH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ58CH 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
