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Taiwan Semiconductor Corporation S1JMH
- Part No.:
- S1JMH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- 2-SMD, Flat Leads
- Datasheet:
-
S1JMH.pdf
- Description:
- 1A, 600V, STANDARD RECOVERY RECT
- Quantity:
- Payment:
- Shipping:
Inventory:5,427
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Product details
Overview
S1JMH from Taiwan Semiconductor is a 1A, 600V standard surface-mount rectifier diode in Micro SMA package, featuring glass-passivated junction, AEC-Q101 qualification, and 1.10V max forward voltage at 1A/25°C - used in automotive lighting and DC-DC snubber circuits.
For engineers reviewing the S1JMH datasheet, S1JMH pinout, S1JMH application, or S1JMH equivalent, key selection criteria include repetitive peak reverse voltage (600V), surge current rating (20A), junction temperature range (–55°C to +175°C), thermal resistance (RθJL = 30°C/W), and AEC-Q101 qualification for automotive reliability.
Technical Context
The S1JMH is a single-die, unidirectional silicon rectifier optimized for high-reliability surface-mount operation. Its glass-passivated junction ensures stable reverse leakage (<1µA @ 25°C, <50µA @ 125°C) and robust moisture resistance (MSL Level 1).
Designed for fast-switching general-purpose rectification, it delivers 780ns reverse recovery time under IF = 0.5A / IR = 1.0A / Irr = 0.25A conditions and exhibits low junction capacitance (5pF @ 1MHz, 4V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - maximum repetitive reverse blocking voltage; defines safe operating limit in DC-DC flyback or snubber networks |
| IF | 1 A continuous - rated average forward current; determines thermal derating in compact automotive PCB layouts |
| IFSM | 20 A - non-repetitive surge capability; supports inrush and transient overload in lighting drivers |
| VF (max) | 1.10 V @ 1A/25°C - low conduction loss; reduces power dissipation in thermally constrained modules |
| trr | 780 ns - reverse recovery time; enables efficient operation up to ~100 kHz switching frequencies |
| RθJL | 30 °C/W - junction-to-lead thermal resistance; allows direct heatsinking via PCB copper pour or metal-core substrate |
| Junction Temp | –55°C to +175°C - extended operating range; validated for under-hood automotive environments |
Pinout & Package
Package: Micro SMA - surface-mount, single-anode/single-cathode configuration with cathode band marking; matte tin-plated leads compliant with J-STD-002 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry | Connected to lower-potential side of rectified path; requires adequate trace width for 1A continuous flow |
| Cathode | Forward current exit / reverse blocking terminal | Marked by visible band; ties to output rail or snubber node; must withstand full 600V reverse potential |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements - enables use in ASIL-B compatible lighting and body control modules |
| Glass-passivated junction | Enhanced die surface protection against humidity and contamination - improves long-term reliability in humid under-hood environments |
| Low VF (1.10V max) | Reduces conduction loss by ~15% vs. legacy 1A rectifiers - lowers thermal load in sealed LED driver enclosures |
| MSL Level 1 | No floor life limitation before reflow - supports automated SMT assembly without dry-pack or baking preconditioning |
| RoHS & halogen-free | Complies with IEC 61249-2-21 and EU RoHS directives - meets Tier-1 automotive supplier material declaration requirements |
Applications
| Automotive LED Headlamp Driver | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: High-brightness LED array powered by buck-boost converter in headlamp ECU. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant topology, handling 1A average output current. Use Value: 600V VRRM provides margin against load-dump transients; AEC-Q101 ensures field reliability over 15-year vehicle lifetime. | Use Scenario: Secondary-side rectification in isolated 12V-to-5V/3.3V flyback converter for infotainment supply. IC Role / Device Role / Timing Role: Unidirectional current path with minimal conduction loss and predictable trr. Use Value: 780ns trr limits switching losses; RθJL = 30°C/W enables thermal coupling to ground plane without heatsink. |
| Snubber Network in Motor Control | Car Interior Lighting Power Supply |
Use Scenario: RC snubber across MOSFET drain-source in 24V BLDC gate driver for HVAC blower. IC Role / Device Role / Timing Role: Clamping diode absorbing inductive kickback during turn-off. Use Value: 20A IFSM handles short-duration energy spikes; 175°C TJMAX prevents thermal runaway during repeated surges. | Use Scenario: Constant-current LED driver for ambient lighting in door panels and center console. IC Role / Device Role / Timing Role: Input rectifier feeding linear or buck regulator stage. Use Value: MSL Level 1 and matte tin plating ensure zero defects in high-volume SMT lines; 0.006g weight minimizes board flex stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS1H60S | 600V, 1A Schottky; VF ≈ 0.75V @ 1A but TJMAX = 150°C; no AEC-Q101 | Lower conduction loss but reduced thermal margin; not qualified for automotive under-hood use | Prefer where efficiency > temperature margin and automotive qualification is not required |
| ES1J | 600V, 1A standard rectifier; VF = 1.7V @ 1A; AEC-Q101 not claimed; RθJL = 50°C/W | Higher conduction loss and poorer thermal performance; widely available but less optimized for space-constrained automotive designs | Acceptable for cost-sensitive non-automotive industrial supplies with relaxed thermal budgets |
Compared with STPS1H60S and ES1J, the S1JMH uniquely balances AEC-Q101 compliance, 1.10V VF, 175°C junction rating, and 30°C/W thermal resistance - making it the preferred choice for thermally dense, automotive-grade rectification where reliability and efficiency are both critical.
Availability
S1JMH is available at Aetrix Electronics and suitable for automotive LED lighting, DC-DC converter output stages, and motor-control snubber networks requiring stable component supply across production lifecycles.
Supply support for S1JMH 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, serving global automotive, industrial, and consumer markets since 1979.
The S1JMH belongs to TSC's AEC-Q101-qualified Micro SMA rectifier family, engineered specifically for high-reliability surface-mount rectification in space-constrained automotive subsystems where thermal resilience and process consistency are mandatory.
FAQ
What is the maximum junction temperature rating for the S1JMH?
The S1JMH has a maximum junction temperature (TJMAX) of +175°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating enables reliable operation in under-hood automotive environments and high-power-density LED drivers. The S1JMH maintains specified electrical performance within this full range, supported by its glass-passivated junction and Micro SMA thermal design.
Is the S1JMH pin-compatible with other Micro SMA rectifiers like S1GMH or S1JH?
Yes - the S1JMH shares identical Micro SMA package dimensions, anode/cathode terminal layout, and polarity marking (cathode band) with S1GMH and S1JH. All are single-die, two-terminal devices with identical pad footprint and soldering requirements. However, VRRM differs: S1GMH = 400V, S1JMH = 600V, so voltage rating must be verified per circuit requirement.
Does the S1JMH meet automotive qualification standards?
Yes, the S1JMH is explicitly AEC-Q101 qualified per the Taiwan Semiconductor datasheet (Version A2103). This qualification covers stress tests including HTGB, HTRB, TCT, and mechanical shock - confirming suitability for automotive electronic control units, lighting modules, and body electronics where long-term reliability is mandated.
What is the reverse recovery time (trr) of the S1JMH and how is it measured?
The S1JMH has a typical reverse recovery time (trr) of 780 ns, measured under IF = 0.5A, IR = 1.0A, and Irr = 0.25A per JEDEC-standard test conditions. This value reflects its behavior in hard-switched topologies and informs switching loss calculations. The S1JMH's trr is consistent across its operating temperature range and contributes to predictable EMI performance in DC-DC converters.
What does the marking code "A7" indicate on the S1JMH device body?
The marking code "A7" laser-etched on the S1JMH case identifies it as the 600V variant within the S1xMH family (S1GMH = A5, S1JMH = A7). It is not a date or lot code - it directly correlates to VRRM and is used for visual sorting during manual inspection or AOI verification. The S1JMH's full ordering identity remains unchanged regardless of marking variation.
S1JMH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 2-SMD, Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 780 ns
- Current - Reverse Leakage @ Vr:
- 1 µA @ 600 V
- Capacitance @ Vr, F:
- 5pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Micro SMA
- Operating Temperature - Junction:
- -55°C ~ 175°C
S1JMH FAQ
1.How can I place an order for S1JMH through Aetrix?
Please submit a Request for Quotation (RFQ) for S1JMH 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 S1JMH reliable?
The price and inventory of S1JMH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1JMH is usually 5 days.
3.What payment methods are accepted for S1JMH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1JMH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1JMH?
S1JMH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1JMH 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 S1JMH?
For technical support, including S1JMH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1JMH requirements.
6.How does Aetrix verify that S1JMH is sourced from the original manufacturer or authorized distributors?
All S1JMH 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 S1JMH meets industry standards.
7.What is the process for return or replacement of S1JMH?
All S1JMH units undergo pre-shipment inspection (PSI). If there is an issue with S1JMH, 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 S1JMH part is unused and in its original packaging.
Return procedure for S1JMH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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