Zener diode model comparison table:
| Original model | Foreign model | Regulated value | Domestic replacement model |
| 1N746 | H23 MA4030 RD417E RD217EB | 2.5-3.5 | 2CW51 |
| 1N747 | 1N748 1N749 HZ4 RD3.9E | 3.9-4.5 | 2CW52 |
| 1N750 | 1N751 HZ5 05Z5.1 RD5A RD5.1E | 4-5.8 | 2CW53 |
| 1N752 | 1N751 HZ5 05Z5.1 RD5A RD5.1E | 5.5-6.5 | 2CW54 |
| 1N754 | HZ6.8E 02Z6. 8A RD6.8E RD7A | 6.2-7.5 | 2CW55 |
| 1N755 | 1N756 HZ7 HZ7.5E 05Z7.5 RD7.5 | 7-8.5 | 2CW56 |
| 1N757 | HZ9 RD9A | 8.5-9.5 | 2CW57 |
| 1N758 | HZ10A RD10E | 9.2-10.5 | 2CW58 |
| 1N714 | 1N962 1S335 HZ11 HZ11E RD11E | 10-11.8 | 2CW59 |
| 1N963 | HZ12E 05Z12 BZX79C12 RD12E | 11.5-12.5 | 2CW60 |
| 1N717 | 1N964 1S270 HZ12B2 MA1130 | 12.2-14 | 2CW61 |
| 1N718 | 1N965 1N966 HZ15-1 05Z15 RD15E | 13.5-17 | 2CW62 |
| 1N967 | HZ18-1 HZ18-2 05Z18 RD18E | 16-19 | 2CW63 |
| 1N968 | HZ20-1 RD20E | 18-21 | 2CW64 |
| 1N969 | HZ24E RD24E | 20-24 | 2CW65 |
| 1N970 | 02Z24 | 23-26 | 2CW66 |
| 1N971 | HZ27 | 25-28 | 2CW67 |
| 1N972 | RD31E | 27-32 | 2CW68 |
| 1N973 | 1N974 HZ733 ZX0249E UPC574J | 31-35 | 2CW69 2CW70 |
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